Category Archives: Surface Weather Map

December 29, 2015 – 12z

Low pressure is located over Michigan this morning.  Cold air extends from the western Great Lakes to the Southern Plains, and covers most of the country west of that line.  Scattered areas of temperatures below zero are found across the Northern Plains and Central Rockies.  Widely scattered areas of rain and snow extend from the Pacific Northwest to the Central Great Basin to the Southwest U.S.  A cold front extends from the Michigan low southward across the Appalachians.  Warm and moist air extends from North Carolina to Florida.  Widespread rain covers the Southeast U.S. and Mid-Atlantic.  Heavy winter precipitation covers New England, with scattered areas of snow extending westward across the Great Lakes.

December 29, 2015 – 0z

Low pressure is lifting northeast across Illinois this evening.  A wedge of warm and moist air extends from Florida northward into Kentucky.  Widespread showers and thunderstorms extend from the Florida Panhandle northward, spreading out across the Ohio Valley, Appalachians, and Mid-Atlantic.  Winter precipitation is found from New England westward across the Great Lakes, then wrapping southward behind the low into eastern Iowa and northern Illinois.

The remainder of the country is cold with a couple of places over the Central Rockies and North Dakota below zero.  Rain in lower elevations with snow in higher elevations is being observed over California and Nevada.  Light snow extends northeastward into western Montana.

December 28, 2015 – 12z

Deep low pressure is located over Arkansas this morning, and a cold front extends from the low to southeast Louisiana.  Widespread showers and thunderstorms are located along and either side of the front, covering much of the middle and lower Mississippi Valley.  Temperatures are warm and dew points high over the Southeast U.S.  Cold air now covers much of the northern and western parts of the country, and winter precipitation extends from the southern Great Lakes to the Central Plains, and southward across Oklahoma and north Texas.  Rain and snow have moved onshore California and Oregon and this precipitation extends into Nevada and Utah.

December 28, 2015 – 0z

Attention remains focused on the strong storm system moving across the south central part of the country.  Low pressure is located over east Texas, and warm and moist air continues to flow northward off the Gulf of Mexico to a front that extends from the low to the Mid-Atlantic.

Severe thunderstorms are occurring across parts of Texas/Louisiana and Arkansas.  Widespread rain extends from the Southern Plains to the Ohio Valley to the Mid-Atlantic.  Winter weather continues from eastern New Mexico and southeast Colorado eastward into Kansas, Oklahoma and Texas.

A storm system affecting the Western U.S. is generating widespread rain and snow from the Pacific Northwest to California and Nevada.

December 27, 2015 – 12z

A strong front extends from southern Maine to central Ohio to the far southeast corner of Oklahoma to south Texas.  To the southeast of the front, it is unseasonably warm and moist.  Northwest of the front, cold temperatures have settled southward and cover much of the northwest half of the country.  Sub-zero air extends from the Central Great Basin to the Northern Plains.

There are some areas of rain and snow over the Pacific Northwest and northern California, but the main attention is with the precipitation that is being generated near the front from the Southern Plains to New England.  Winter precipitation is located over northern and eastern New England, and widespread winter precipitation covers much of western Oklahoma, west Texas, eastern New Mexico, and adjacent areas of Kansas and Colorado.  Blizzard conditions are common across most of this area.

December 27, 2015 – 0z

A strong cold front is pushing southeastward across the Plains and Mississippi Valley.  Severe thunderstorms are occurring across north Texas, and heavy rain producing showers and thunderstorms extend northeastward along and north of the front into the Ohio Valley and Great Lakes.  Showers extend farther northeast into southern New England.  The air across the Southeast U.S. remains warm and moist and scattered showers extend from Florida to southeast Texas.

The transition to winter precipitation is beginning to take place from Kansas southwestward to New Mexico.  Some very heavy snow is developing near the Texas/New Mexico border.

Temperatures below zero are found across the Northern Plains and Central Rockies.

December 26, 2015 – 12z

Low pressure is located over south central Kansas this morning.  East of the low, a warm front snakes its way eastward to the Mid-Atlantic.  South of this front, the air mass is unseasonably warm and moist.  A cold front is pushing southeast across western Oklahoma and Texas.  A reinforcing surge of cold air is moving south across the Central and Northern Plains.  The air behind this is quite cold and a large area of -20 degree air or colder is found near the Canadian border extending north across the Canadian Prairies.

Showers and thunderstorms have been increasing in coverage and intensity from the eastern part of the Southern Plains to the southern part of the Ohio Valley.

Snow is falling from the western portions of South Dakota and Nebraska, eastward into Wisconsin.

December 26, 2015 – 0z

There are a variety of air mass types found across the country this evening.  A stationary front extends from southern New England to Tennessee to northeast Texas.  South of this boundary, the air mass is unseasonably warm and moist, with dew point temperatures in the 70′s common across the Deep South.  Widespread showers and thunderstorms / resulting in serious flooding / extend from Louisiana to the Central Appalachians.  Rain continues farther to the northeast into southern New England.

A broad zone of cooler and drier air extends from the Southern Plains northeastward across the Great Lakes and Ohio Valley.  Across the northern part of this zone, below freezing temperatures extend from Nebraska to Michigan.  A significant snow event is unfolding across Nebraska and adjacent areas of South Dakota and Iowa.

Deep low pressure is organizing over southeast Colorado, along and just ahead of a nose of arctic air that has been moving southward across the High Plains.  Some of the coldest air of the season is showing up on the weather map with below zero air making it into Montana and North Dakota, and temperatures as cold as 26 degrees below zero at stations in Canada.

Snow is being observed from Wyoming and Colorado to South Dakota.  Showers with snow in the higher elevations are scattered across California, Nevada, Utah and Arizona.

December 25, 2015 – 12z

A stationary front extends from near the nation’s capitol to western Tennessee and east Texas.  The air south of this front is mild and very moist.  There has been a tremendous amount of rainfall overnight and showers and thunderstorms are widespread this morning from the Lower Mississippi Valley to the southern Ohio Valley.   Lighter rain is found over the Mid-Atlantic region as well as the eastern Great Lakes.

A large area of rain in lower elevations and snow in higher elevations extends from the Pacific Northwest to the Southwest U.S.  Cold air now covers much of the northwest half of the country, with single digit temperatures found from the Central Great Basin to the High Plains.  Some of the coldest air of the season is now showing up behind an arctic front that has crossed into Montana and North Dakota.  Some temperatures just across the border in Canada are colder than 20 degrees below zero.

December 25, 2015 – 0z

A front extends from New England southwestward to the Southern Plains.  Warm and unseasonably moist air is found south of the front, with below freezing air to the north – from the western Great Lakes to the Rockies.  The coldest air is found over the Canadian Prairies where temperatures have fallen below zero, and some of this air is beginning to filter across the border into the U.S.  Heavy rain producing showers and thunderstorms extend from Mississippi to South Carolina.  Some light rain and snow is moving across northern Illinois, southern Wisconsin and eastern Iowa.  Widespread rain with snow in higher elevations is found over California and southwest Oregon, and this precipitation extends eastward to the Central Rockies.