Green Sky Chaser Weather Discussions

Highlights:

• Ridge over the western U.S.
• Positively tilted shortwave trough over Idaho / Montana
• Positively tilted trough over the central U.S.

• High pressure over the Northwest
• Low over the Southeast, with a warm front lifting northward across Florida
• Rain and thunderstorms across the Southeast, with a chance for tornadoes in Florida, south of the warm front

2115Z visible satellite image:

2115Z infrared satellite image:

12Z 500 mb map:

2130Z surface analysis:

12Z snow cover map:

Highlights:

• Ridge over the western U.S.
• Positively tilted trough over the central U.S.

• Rain in Washington again
• Strong high centered over the West
• Low over Lake Superior, with a cold front extending westward into the Dakotas and a warm front extending southward into eastern Oklahoma / western Arkansas
• High over the Northeast
• Snow falling in Ohio and Pennsylvania
• Weak low/trough off the Texas Coast
• Rain falling in Louisiana and eastern Texas in association with the low pressure

2015Z visible satellite image:

2015Z infrared satellite image:

12Z 500 mb map:

2030Z surface analysis:

12Z snow cover map:

Highlights:

• Trough over the northeastern U.S.
• Positively tilted shortwave trough from Kansas to Arizona

• Strong high centered over the Northwest
• Low centered over Saskatchewan, with warm front extending southward along a pressure trough into northeastern Colorado
• High over the Midwest, centered over Ontario
• Snow falling in Illinois
• Weak low/trough over eastern Oklahoma, with a cold front extending into central Texas…a bit of rain is falling along the front

2015Z visible satellite image:

2015Z infrared satellite image:

12Z 500 mb map:

2030Z surface analysis:

12Z snow cover map:

Highlights:

• Trough over the eastern U.S.
• Positively tilted shortwave trough over the Northern Rockies

• High in the Pacific Northwest
• High in south central Canada
• Cold front moving westward through Montana and warm front moving eastward through the Central Plains
• Some rain, ice, and snow along the leading edge of the warm front
• Low over the Texas Panhandle
• High over the Gulf of Mexico
• Low over Michigan
• Extratropical cyclone moving up the mid-Atlantic Coast…should continue to strengthen into the Northeast…some snow already along the mid-Atlantic Coast

2115Z visible satellite image:

2115Z infrared satellite image:

12Z 500 mb map:

2120Z surface analysis:

12Z snow cover map:

Highlights:

• Trough over the eastern U.S.

• Rain and snow in the Pacific Northwest
• High over the Great Basin
• Low pressure trough and warm front from Saskatchewan to western Texas
• High pressure in the Midwest
• Snow falling in Missouri and northern Arkansas
• Low pressure in the Northeast; one center over Lake Huron with a cold front extending into southern Illinois, and the stronger center just off the New England coast with a cold front extending into Florida
• Snow falling in New York and Maine

• International Fall, Minnesota recorded a low last night of 46 below!

1945Z visible satellite image:

1945Z infrared satellite image:

12Z 500 mb map:

20Z surface analysis:

12Z snow cover map: