Category Archives: Significant Impact Storm

Tornado Outbreak of December 10-11, 2021

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Oklahoma Severe Thunderstorm Events – May 19, 2018

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Significant impact storm / March 22-24, 2016 / 2016 #5 (Closed)

A powerful storm system is now affecting the middle part of the country and this storm will be bringing a wide variety of hazardous weather conditions to the Central and Eastern U.S. through Thursday.

Heavy snow is beginning to fall across portions of Colorado and Wyoming this Tuesday evening.  As deep low pressure moves across the Plains on Wednesday, heavy snow will spread northeastward across portions of Nebraska, southern South Dakota, northwest Iowa and southwest Minnesota.  Snow will continue on Thursday into Wisconsin and Michigan.  Behind the low pressure area on Wednesday, strong north winds will result in blizzard conditions over east central and northeast Colorado, and adjacent areas of far northwest Kansas and far southwest Nebraska.

Very strong and dry winds will result in extreme fire danger from New Mexico to eastern Kansas on Wednesday.

By Wednesday evening, severe thunderstorms will develop from Missouri to eastern Texas.  The primary risk will be damaging winds, but some large hail and an isolated tornado will also be possible.  The risk will continue east of the Mississippi Valley on Thursday.

100 AM CDT WED MAR 23, 2016:

A fire that started in western Woods County burned intense enough to be detected by infrared satellite imagery for several hours Tuesday evening and early Wednesday morning.  The fire moved quickly north, crossing the border into Comanche County, Kansas.  Detection’s such as this will likely become common over the next 24 hours.  While difficult to tell how wide the fire was, radar also detected the plume and suggested it spread northward for about 30 miles.

805 AM CDT WED MAR 23, 2016:

Widespread snow is breaking out this morning from South Dakota to southern and eastern Wyoming and south along the foothills through the Denver Metro.  Winds will be increasing soon and blizzard conditions will begin to develop through the morning and early afternoon – especially across northeast Colorado and southeast Wyoming.

1219 PM CDT WED MAR 23, 2016:

The fire that burned from Woods County, Oklahoma into Comanche County, Kansas, Tuesday evening into Wednesday morning was not completely extinguished on the eastern fire line today.  The area is being impacted now by strong southwest winds and much drier air resulting in numerous areas of active burning occurring in Woods County and now Barber County, Kansas.  Several smoke plumes are evident on radar, and satellite imagery shows a dark burn scar from the burning which occurred over the last 24 hours.

1235 PM CDT WED MAR 23, 2016:

Severe thunderstorm development later this afternoon and evening is expected to be a little more aggressive than earlier anticipated.  The risk is also a little farther west covering more of eastern Oklahoma.  There are two areas where the tornado threat is a little higher.  The first extends from southern Missouri to northeast Texas.  The second is a small area centered over far northwest Missouri and extending into adjacent areas of Iowa and Nebraska.

118 PM CDT WED MAR 23, 2016:

Many photos are being posted of the heavy snow in the Denver and surrounding areas.  Winds have been gusting to 50 mph and blizzard conditions are bringing travel to a crawl.  As much as 16 inches of snow has fallen in some areas.  80,000 customers are reported to have lost power and over half of the flights (700+) out of Denver International have been cancelled so far.

352 PM CDT WED MAR 23, 2016:

Amazing satellite imagery this afternoon.  On this image, you can see thunderstorms developing over southeast Nebraska – and a Tornado Watch is now in effect for portions of Kansas/Nebraska/Iowa/Missouri.  Blizzard conditions continue from the Colorado foothills eastward into far southwest Nebraska and far northwest Kansas.

Blowing dust is becoming evident across southwest Texas.  Fires can be seen in the Texas Panhandle.  Numerous fires with intense burning are occurring in Woods County, Oklahoma and Barber/Comanche counties in Kansas.  Smoke from these fires has reached all the way to the Nebraska border.

Winds across western Oklahoma and the Panhandle have been gusting to over 60 mph.

We are entering a period of extreme fire danger in the Oklahoma City area as humidity has now dropped to at or below 15 percent and winds continue to increase.

441 PM CDT WED MAR 23, 2016:

Latest guidance from the high resolution HRRR model (below left) has been strongly suggestive that supercell storms will form over eastern Oklahoma during the next 1 to 2 hours.  Radar is now showing first echoes east of Ada (below right).

457 PM CDT WED MAR 23, 2016:

A dangerously wide and fast moving wildfire is now approaching the north and west sides of Pampa, Texas.  Also – a large fire has developed in northeast Oklahoma City near I-44 and I-35.

527 PM CDT WED MAR 23, 2016:

Fire “hot spots” detected by IR satellite imagery:

900 PM CDT WED MAR 23, 2016:

There have been a couple of storms with Tornado Warning’s this evening.  This storm may have produced a tornado just southwest of Haslet, Texas around 9 pm.

One of the tornado warned storms as it approached Talihina, Oklahoma just before 9 pm:

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948 PM CDT WED MAR 23, 2016:

Severe thunderstorms that continue to pose a risk of large hail and damaging winds are scattered from Missouri to Texas this evening:

With regard to fire, the only remaining “hot spots” on IR satellite imagery is associated with the fires that continue to burn in Woods County, Oklahoma and Barber County, Kansas.

Most of the highest wind gusts in Oklahoma today were across western Oklahoma.  The highest observed wind today was from Burns Flat where 69 mph was reached.

Some tremendous snowfall occurred today in Colorado.  Near Pinecliffe, 31.6 inches of snow fell in 18 hours!

1009 PM CDT WED MAR 23, 2016:

A tornado has recently been confirmed with this circulation over southwest Washington County, Arkansas – just to the east of Evansville which sits near the Oklahoma border.

1029 PM CDT WED MAR 23, 2016:

Reported tornado approaching Fayetteville, Arkansas:

1114 PM CDT WED MAR 23, 2016:

Supercells have managed to remain discrete across northwest Arkansas and southwest Missouri and have occasionally posed a tornado threat.  A Tornado Debris Signature is now being observed with a storm approaching Cape Fair, Missouri:

 

1254 AM CDT THU MAR 24, 2016:

Snow is spreading northeastward as deep low pressure moves toward the Great Lakes.  Winds are now forecast to be a little stronger and a Blizzard Warning has been issued for portions of eastern Wisconsin.  Latest high resolution model guidance paints a narrow band of snow overnight and Thursday morning where amounts may approach 10 inches in some areas.

135 PM CDT THU MAR 24, 2016:

Morning visible satellite imagery showing the new snow cover from Colorado east northeastward.  Also, thunderstorms in Lake Charles, Louisiana produced a weak tornado on the east side of the city just after sunrise this morning.  Finally, fires continue to burn near the Kansas/Oklahoma border southwest of Medicine Lodge and northwest of Alva.  Winds today would be pushing any uncontrolled fire to the south southeast.

Snowfall totals starting to filter in.  In Colorado, the heaviest snowfall east of the mountains was centered between Denver and Boulder where 18 to 21 inch amounts were common:

252 PM CDT THU MAR 24, 2016:

Mesocyclones embedded in a squall line have been occasionally strong enough early this afternoon to produce a tornado threat across southern Alabama and the Florida Panhandle.

Snow and wind reports from Nebraska:

Significant impact storm / February 22-25, 2016 / 2016 #4 (Closed)

Significant impact storm / February 22-25, 2016 / 2016 #4 (Closed)

A powerful upper storm system and its associated deep surface cyclone will drop across the Southern Plains on Monday and lift northeastward across the Mississippi Valley/Ohio Valley/Great Lakes through the middle of the week.  While some large snow totals are likely over a relatively small area, the lack of deep cold air should keep the winter impacts at a minimum.  Of greater concern is the severe thunderstorm risk that will span across three days.  A significant tornado threat may evolve on Tuesday from southern Louisiana eastward across the southern portions of Mississippi and Alabama, and the Florida Panhandle.

1024 PM CST MON FEB 22, 2016:

Severe thunderstorms have developed in Texas this evening.  A new Severe Thunderstorm Watch has been issued.  One particularly strong storm is going to come very close to Del Rio.  This storm is likely producing hail to the size of tennis balls and damaging winds.

739 AM CST TUE FEB 23, 2016:

With cold air lacking, the winter aspects of this storm are not going to be very extreme.  Heavy snow has been falling over northeast New Mexico and adjacent areas of Colorado, Oklahoma, and Texas.  Otherwise, the only winter related headlines are a Winter Storm Watch that extends from eastern Illinois to Lower Michigan.

Today should be an active day for severe thunderstorms and tornadoes across southern Louisiana, Mississippi, Alabama, and the Florida Panhandle.  Early this morning, storms moving through the Houston area have been taking advantage of strong low level shear and a tornado may have occurred over rural areas of southwest Galveston County.

1123 AM CST TUE FEB 23, 2016:

The first Tornado Watch of the day has been issued for portions of Louisiana and Mississippi.  Currently, there are two rotating storms that carry a Tornado Warning just west of New Orleans.  These storms will soon be moving across western and central Lake Pontchartrain.

1241 PM CST TUE FEB 23, 2016:

It appears that a potentially strong tornado has either hit or come very close to hitting the city of Livingston, Louisiana.  The area most likely affected would be the west side of the city.   Livingston is about 25 miles east of Baton Rouge.

113 PM CST TUE FEB 23, 2016:

While considerably weaker than it was as it passed across Livingston, Louisiana – a tornado is still likely occurring.  It currently is located between Independence and Montpelier and is displaying occasional signs of lofted debris.

326 PM CST TUE FEB 23, 2016:

A large and potentially strong tornado is occurring just south of Donaldsonville, Louisiana.  The tornado is tracking through rural areas toward the western side of Lake Pontchartrain, but appears it has struck some structures based on the strong debris signature from the KLIX radar.  Donaldsonville is about 30 miles south of Baton Rouge.

400 PM CST TUE FEB 23, 2016:

As parameters become increasingly favorable for rotating storms, mesocyclones have become more numerous and stronger over the last hour.  New tornado watches have been issued from central Mississippi southward across southern Alabama and the western Florida Panhandle.  The Storm Prediction Center has used enhanced wording / Particularly Dangerous Situation / on the southeastern most watch, wording that is reserved for events capable of producing strong and long-lived tornadoes.

A tornado is occurring in Mississippi just southeast of Sandy Hook.  Radar shows a strong and tight circulation with evidence of lofted debris.

407 PM CST TUE FEB 23, 2016:

413 PM CST TUE FEB 23, 2016:

A powerful circulation is moving across the northwest side of Lake Pontchartrain.  Should this survive over the next 30 minutes, it will be approaching the communities of Mandeville and Madisonville on the north side of the lake.

430 PM CST TUE FEB 23, 2016:

451 PM CST TUE FEB 23, 2016:

Thankfully, the strong circulation over Lake Pontchartrain has weakened for the time being as it moved off the lake and over Madisonville and Lewisburg.  The storm remains tornado warned…

A new tornado has developed over the southwest part of the lake.

636 PM CST TUE FEB 23, 2016:

Several tornado warnings are in effect for counties in southwest Alabama, but it has been quite some time since the last circulation looked strong or tight enough to produce a significant tornado.  Several places have likely seen some wind damage.  Conditions for tornado production will remain elevated through the evening hours, and rapid tornado development remains a distinct possibility.

725 PM CST TUE FEB 23, 2016:

A strong supercell and associated mesocyclone has been tracking across the open water of the Gulf of Mexico, but is now approaching shore.  Chances are good that this produced at least one tornado in the gulf, and the storm may produce more as it approaches Orange Beach, Alabama and Paradise Beach, Florida.

1148 PM CST TUE FEB 23, 2016:

There have been several tornadic circulations noted during the past hour from eastern Alabama and western Georgia southward into the Florida Panhandle.  This storm produced a Tornado Debris Signature over eastern Henry County in Alabama:

A new Tornado Watch has been issued for portions of central Georgia:

Unofficially, three people have been reported killed from today’s storms.  All apparently came from tornado events – two in Louisiana and one in Mississippi.

A broad area from Arkansas northeastward to the Great Lakes and New England is now under winter weather advisories and warnings.  Winter storm warnings are in effect from eastern Illinois to Lower Michigan:
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From WPC, there is a better than 50 percent chance of 8 inch snowfall across the Winter Storm Warning area:

135 AM CST WED FEB 24, 2016:

The latest forecast from the Storm Prediction Center shows a widespread threat for tornadoes will continue on Wednesday from Florida northward to New Jersey.  Of particular concern is a risk for strong tornadoes over central and eastern North Carolina, southeast Virginia and a small part of northeast South Carolina.

811 AM CST WED FEB 24, 2016:

Deep low pressure / 989 mb / is located over Kentucky this morning.  Enough cold air is being wrapped into the system to generate snowfall / some very heavy / from New England to the southern Great Lakes to the Middle Mississippi Valley.  Strong winds combined with the heavy snow will result in blizzard conditions today over eastern Illinois and northwest Indiana.

Severe thunderstorms will once again be likely today.  A warm and moist atmosphere is advancing northward across the Carolina’s.  Strong low and deep layer shear will create a profile favorable for supercell storms and tornadoes, especially from southern Maryland to eastern North Carolina where conditions are expected to become particularly favorable for the development of strong and/or long-lived tornadoes.  At least some tornado threat will extend all the way from southern New York to Florida.

1232 PM CST WED FEB 24, 2016:

Tornado watches are in effect from the Carolina’s to southern Maryland:

As always, you don’t need a watch / or even a warning / to have a tornado.  It appears that at least some damage has occurred recently in Harbour Heights, Florida.

Updated 819 AM CST THU FEB 25:  Storm survey information on this tornado – 33 homes damaged – 5 with significant damage.  1 person injured.  Rated EF1 – 100 yards wide – 1.1 mile long.

This tornadic circulation developed rapidly and produced a Tornado Debris Signature on radar over the northwest side of the city.  A TDS doesn’t necessarily mean “building” debris, as it could just be plant and tree material, but something was lofted in the area of this detection:

Location of TDS:

150 PM CST WED FEB 24, 2016:

It appears that a tornado has either hit or come very close to the west side of Waverly, Virginia.  (UPDATED at 358 PM: 2 people were killed by this tornado)  This was a very close sampling by the Wakefield, Virginia radar site which was only 5.6 nautical miles from the TVS.  Not only was a TDS detected, but high reflectivity (or debris ball) was also detected in the hook.  It looks as if the tornado was short-lived:

337 PM CST WED FEB 24, 2016:

A significant tornado event may have just occurred at Oxford, North Carolina.  Radar paints an ugly picture of a very strong mesocyclone passing nearly straight over the city with a large plume of debris indicated as it leaves Oxford.  This storm is now headed toward South Hill, Virginia.

419 PM CST WED FEB 24, 2016:

In southern North Carolina, there are very strong indications of a tornado passing close to Saint Pauls.

434 PM CST WED FEB 24, 2016:

From WRAL in North Carolina – an image northeast of Oxford, North Carolina earlier:

620 PM CST WED FEB 24, 2016:

Several places from Maryland south into northeast North Carolina are under a Tornado Warning at this hour, but it has been over an hour since a significant circulation or evidence of lofted debris has been detected by radar.  The atmosphere is beginning to stabilize and the severe threat should continue to wane through the evening.  Meanwhile, Blizzard Warnings continue for heavy snow and high winds from eastern Illinois northeastward.  The latest surface weather map shows the lowest pressure over northeast Ohio at less than 989 mb.

The death toll at Waverly, Virginia / previously addressed tornado / has risen to three.

357 PM CST THU FEB 25, 2016:

Snowfall over Illinois/Indiana/Michigan –

1210 PM CST FRI FEB 26, 2016:

Links to NWS sites with damage survey information of tornado events:

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BMX

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LIX

Significant impact storm / February 6-7, 2016 / 2016 #3 (Closed)

A powerful short wave trough is moving across Montana this early afternoon on Sunday.  This wave will move quickly southeastward, evolving into a deep upper low over the Great Lakes on Monday.  While the associated surface low is not all that deep, a very tight pressure gradient has developed to the west and southwest of the low, and this will continue to be the case as the low tracks southeast over the next 24 to 48 hours.  Very strong winds will be occurring over the Northern Rockies and Northern Plains on Sunday, and strong and gusty winds will move south across the Plains on Monday.  The system is fairly dry, but some snow is expected across the Northern Plains and Upper Midwest.  Given the strength of the winds, any snow at all will likely lead to blizzard conditions – and a number of blizzard watches and warnings are in effect from the Dakotas to Minnesota and Iowa.

Some winds reported from Montana at Noon on Sunday (6th):

Havre: West 48 gust 64 mph

Lewistown: West 38 gust 60 mph

Great Falls: West 41 gust 55 mph

Cut Bank: West 47 gust 63 mph

UPDATE: 6:36 PM CST SAT FEB 6, 2016:

The highest measured wind speed reported today comes from 11 miles east northeast of Zortman, Montana at 71 mph.

UPDATE: 1:27 AM CST SUN FEB 7, 2016:

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UPDATE: 9:47 AM CST SUN FEB 7, 2016:

We are starting to see stronger winds mix to the surface this morning.  Gusts of 50 to 60 mph are now being observed across the western Dakotas:

UPDATE: 2:14 PM CST SUN FEB 7, 2016:

A broad area of strong winds between low pressure near northeast Minnesota and high pressure over the Rockies continues to blow across the Northern Plains this afternoon.  The highest wind gust this hour has been 66 mph at Rapid City, South Dakota – 8 mph faster than the requirement for a severe thunderstorm.

February 7, 2016 - 19z
February 7, 2016 – 19z

UPDATE: 1:17 PM CST MON FEB 8, 2016:

Strong winds have reached Oklahoma this Monday afternoon.  The highest gust in Okarche has been 48 mph.  Here are Mesonet peaks so far today:

Significant impact storm / February 1-3, 2016 / 2016 #2 (Closed)

A powerful upper storm will be moving quickly across the middle part of the country during the first part of the upcoming work week.  Heavy mountain snows are already occurring from the Southwest U.S. to the Central Rockies.  As a deep surface cyclone moves across the Plains and Midwest, blizzard or near blizzard conditions will occur from eastern Colorado to Iowa to Upper Michigan.  Blizzard watches are in effect for southeast South Dakota, southern Minnesota, eastern Nebraska and much of northern and western Iowa.

In the warm sector, severe thunderstorms will be possible from the Ohio Valley to the Lower Mississippi Valley.  The greatest risk of tornadoes will come Tuesday from far western Kentucky to western Mississippi.

High winds and critical fire danger will exist across much of west and southwest Texas on Monday.

UPDATE: 9:26 PM CST SUN JANUARY 31, 2016

Widespread precipitation has broken out from Utah and Arizona westward to the coast.  There has been excellent model consistency concerning this powerful storm system, and confidence in the forecast track is high.  With this, there have been a number of locations see watches become warnings this evening.  Blizzard warnings are in effect for a small part of California and Nevada, as well as parts of northern Kansas and southern Nebraska.  Many places are under a Winter Storm Warning.

UPDATE: 8:28 PM CST MON FEBRUARY 1, 2016:

Severe thunderstorms have developed over southwest Oklahoma this evening and are moving rapidly to the northeast.  There will be the potential for a few severe thunderstorms in the OKC metro area this evening.  The National Weather Service in Norman has just issued their first Severe Thunderstorm Warning of 2016.

On the winter side of things, very heavy snow is now developing from central Nebraska southwestward across Colorado.  Blizzard warnings are now in effect from north central Kansas and south central Nebraska – northeastward into Iowa, southeast South Dakota and southern Minnesota.  Earlier today, one could have driven from Bishop, California to Marquette, Michigan and been in either a Winter Storm Warning or Blizzard Warning the entire way.

UPDATE: 1:38 PM CST TUE FEBRUARY 2, 2016:

The latest severe weather outlook from the Storm Prediction Center for Tuesday shows a tornado risk from southern Illinois and Indiana southward to the Gulf of Mexico.  There are two areas with higher risks – 1) over western Kentucky and Tennessee and 2) eastern Mississippi and western Alabama.

UPDATE: 7:10 PM CST TUE FEBRUARY 2, 2016:

Deep low pressure is located over central Kansas this morning.  Snow extends from southern Wisconsin westward across Iowa, Nebraska, eastern Colorado and northwest Kansas.  The snow over Nebraska is particularly heavy with some bands producing 1 to 2 inches of snowfall each hour.  Winds are gusting between 45 and 52 mph resulting in blizzard conditions over south central and southeast Nebraska.  The area covered by a a Blizzard Warning has changed little – extending from northwest Kansas to southern Minnesota.

UPDATE: 1:37 PM CST TUE FEBRUARY 2, 2016:

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Deep low pressure is located over north central Kansas.  Widespread heavy snow / with localized blizzard conditions / extend from Wisconsin to Nebraska and eastern Colorado.  Very heavy snow is also falling as far northwest as the Black Hills.

The atmosphere has become quite unstable over the Middle and Lower Mississippi Valley.  Thunderstorms have been getting better organized over the last couple of hours and two tornado watches are in effect.  Storms over central Mississippi have starting exhibiting supercell characteristics over the last hour.  This rotating storm moved by Carthage, Mississippi:

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Severe weather has ramped up quickly over the last hour and several storms over Mississippi and western Tennessee have been tornado warned.  The strongest storm is producing a tornado just southeast of Newton, Mississippi.  Radar is detecting debris created by the tornado:

UPDATE: 4:32 PM CST TUE FEBRUARY 2, 2016:

A tornado producing supercell is getting ready to move into Alabama from Mississippi.  The storm is passing just southeast of Paulette, Mississippi:

UPDATE: 4:59 PM CST TUE FEBRUARY 2, 2016:

A Tornado Emergency has been issued for the city of Carrollton, Alabama.  The radar presentation is one that would suggest a strong or violent tornado is approaching the city:

UPDATE: 5:06 PM CST TUE FEBRUARY 2, 2016:

It appears that a very large tornado may have just missed Carrollton, Alabama to the northwest of the city.  Still, Google Earth imagery shows quite a few rural buildings and houses were in the track path, and a large debris signature is showing up on radar:

UPDATE: 7:52 PM CST TUE FEBRUARY 2, 2016:

Both warm and cold weather related events are beginning to wane this evening.  On the severe thunderstorm side of things, the atmosphere has become much more stable over the last couple of hours.  Given the strength of the wind shear, a few severe events are still possible this evening, but significant events are less likely.

Concerning the blizzard, snowfall rates have steadily decreased over the last few hours with almost no station reporting a snow intensity greater than light.  Winds have also weakened with only a small area over Nebraska and north central Kansas seeing winds that would meet blizzard criteria.  Even though snowfall rates have decreased, there still may be ground blizzards created by blowing snow.

Grand Island, Nebraska saw more than 18 inches of snow with this event.  Some amazing pictures of snow can be seen on this page:

http://www.weather.gov/gid/feb22016blizzard

http://www.weather.gov/oax/GrounhogDayStormWrap

http://www.weather.gov/fsd/news_snowfall020216

Significant impact storm / January 21-24, 2016 / 2016 #1 (Closed)

A deep upper low will be tracking across the southeastern part of the country over the next 72 hours, producing a variety of dangerous weather conditions.

Severe thunderstorms will be possible today (Thursday) and Friday from east Texas to western Georgia and the Florida Panhandle.  The greatest risk of tornadoes extends from far southeast Texas to southern Louisiana, southern Mississippi, southwest Alabama and the western part of the Florida Panhandle.

An extended period of freezing rain from this evening to Saturday morning may result in crippling ice conditions from central North Carolina southwestward into South Carolina and northeast Georgia.

Heavy snow will be occurring from southern Kentucky to New Jersey.  The heaviest snowfall will begin Friday afternoon and continue through much of the weekend.  Areas around Washington DC will be under a Blizzard Watch from Friday evening to Sunday morning where snowfall over over a foot will be possible.  Mountain areas of western Virginia and eastern West Virginia are likely to see over two feet of snow.

UPDATED 1:12 PM CST JAN 21:

Severe thunderstorms developed this morning over east Texas.  One storm capable of producing a tornado and golfball size hail has crossed into Louisiana just north of Bancroft.

UPDATED 4:10 PM CST JAN 21:

Tornado Warnings in red.
Tornado Warnings in red.
Strongly rotating storm approaching Gatesville, Mississippi.
Strongly rotating storm approaching Gatesville, Mississippi.

There has been a big increase in the number of rotating storms over central and southern Mississippi and southeast Louisiana.  Many Tornado Warnings are in effect.

UPDATED 8:00 AM CST JAN 22:

The winter related impacts are starting to kick in this morning.  Heavy snow is currently falling across Kentucky, West Virginia and Virginia.  Forecast snow amounts have increased and now nearly two feet of snow is forecast for Washington DC.  Blizzard warnings have been expanded and now cover parts of southeast New York, New Jersey, southeast Pennsylvania, northern Delaware, northern Virginia, Maryland and Washington DC.

UPDATED 2:37 PM CST JAN 22:

Freezing rain is falling across northern Georgia, South Carolina and North Carolina.  Moderate to heavy snow is occurring from northern Tennessee and central Kentucky to the Washington DC area.  As the event continues to ramp up, there are areas that are likely seeing 2+ inches per hour snowfall rates.  The highest storm totals will be between two and three feet by the end of the weekend.

UPDATED 10:00 PM CST JAN 22:

The Blizzard Warning has been extended a little farther north across southeast Pennsylvania.  Very heavy snow is falling in and around Washington DC, and this snow extends north across New Jersey and Pennsylvania.  The heaviest snow has been coming to an end across Tennessee and Kentucky.

UPDATED 8:44 AM CST JAN 23:

The surface low off the Mid-Atlantic coast has deepened rapidly overnight.  Blizzard conditions extend from southern New York to Washington DC.  As expected, there have been some very impressive snowfall rates and accumulations.  Some places have been seeing rates of over three inches per hour.  The highest snowfall totals have now likely exceeded two feet in some areas.  As of 7 am, here are some CoCoRaHS observations from the state of Maryland:

UPDATED 2:43 AM CST JAN 24:

Snow is winding down across eastern New Jersey and Connecticut.  There should only be a couple more hours before all precipitation has moved offshore.  Snowfall totals are coming in and forecast amounts of 24 to 36 inches look pretty spot on.  There are more than a few jaw dropping amounts approaching 40 inches.

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...RECORD DAILY MAXIMUM SNOWFALL SET AT PHILADELPHIA...

A TOTAL OF 19.4 INCHES OF SNOW FELL AT THE PHILADELPHIA
INTERNATIONAL AIRPORT ON SATURDAY, ESTABLISHING A NEW RECORD FOR THE
DATE. THE PREVIOUS RECORD DAILY MAXIMUM SNOWFALL FOR JANUARY 23 WAS
11.9 INCHES SET IN 1935.

IT WAS THE 5TH GREATEST CALENDAR DAY SNOWFALL AT PHILADELPHIA WITH
THE TOP SPOT BEING HELD BY THE 27.6 INCHES OF SNOW THAT FELL ON
JANUARY 7, 1996.

THE TWO-DAY TOTAL FOR THIS STORM WAS 22.4 INCHES AT PHILADELPHIA
WHICH IS EXACTLY EQUAL TO THE CITY`S NORMAL SNOWFALL FOR THE ENTIRE
SEASON.

THE TWO-DAY STORM TOTAL WAS THE 4TH GREATEST ON RECORD FOR
PHILADELPHIA DATING BACK TO THE 1870S. THE GREATEST TWO-DAY TOTAL
ON RECORD WAS 30.7 INCHES IN JANUARY 7-8, 1996.
...RECORD DAILY MAXIMUM SNOWFALL SET AT ALLENTOWN...

A TOTAL OF 30.2 INCHES OF SNOW FELL AT THE LEHIGH VALLEY
INTERNATIONAL AIRPORT ON SATURDAY, ESTABLISHING A NEW RECORD FOR THE
DATE. THE PREVIOUS RECORD DAILY MAXIMUM SNOWFALL FOR JANUARY 23 WAS
7.7 INCHES SET IN 1966.

IT WAS THE GREATEST CALENDAR DAY SNOWFALL AT ALLENTOWN, REPLACING
THE 24.0 INCHES THAT FELL ON FEBRUARY 11, 1983.

THE TWO-DAY TOTAL FOR THIS STORM WAS 31.9 INCHES AT ALLENTOWN WHICH
IS A NEW RECORD, AS WELL. THE PREVIOUS RECORD TWO-DAY SNOWFALL TOTAL
WAS 25.6 INCHES SET ON JANUARY 7 AND 8, 1996.

ALLENTOWN`S NORMAL SEASONAL SNOWFALL OF 32.9 INCHES WAS ALMOST
EXCEEDED BY THIS ONE STORM.

OFFICIAL WEATHER RECORDS FOR ALLENTOWN DATE BACK TO 1922.

ALSO, THE LIQUID EQUIVALENT PRECIPITATION TOTAL AT THE LEHIGH VALLEY
INTERNATIONAL WAS 1.65 INCHES ON SATURDAY, ESTABLISHING A RECORD FOR
THE DATE. THE PREVIOUS RECORD DAILY PRECIPITATION TOTAL FOR JANUARY
23 WAS 1.39 INCHES SET IN 1983.

OTHER RECORDS FOR THE EVENT (1/23/16 UNLESS OTHERWISE SPECIFIED:

555

A couple images from my friend, Mike who lives in Washington DC: