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National Situation Update: Monday, May 25, 2009

Homeland Security Threat Level: YELLOW (ELEVATED).

National Weather Forecast

South
Showers and locally heavy thunderstorms will move across the South today. The former Gulf low will be moving from Arkansas into Missouri leaving a very moist tropical air mass across most of the region. Afternoon showers and thunderstorms will be widespread from eastern Texas to the Southeast coast. A few isolated storms could turn severe, producing damaging wind gusts or large hail. Heavy rain is also expected from some of these storms. High temperatures will be mainly in the mid 70s to mid 80s. Parts of Texas will have temperatures in the 90s and a few 100s in the vicinity of the Rio Grande.
Midwest
An area of low pressure and a weak front will push eastward across the Plains toward the Mississippi Valley. Low pressure moving northward into Missouri will meet up with a stalled front in the Ohio Valley. The impact of these two fronts will be widespread showers and thunderstorms from the Plains to the Lower Ohio Valley. Heavy rains are possible in some areas. Chilly morning temperatures will move across the Great Lakes. Frost advisories are posted for parts of Michigan and Wisconsin as lows are expected to drop into the upper 30s in some areas. High temperatures across the region will generally be in the 70s and 80s. Cooler 60s are expected behind the front in North Dakota and western South Dakota.
Northeast
With a front stalled in the Virginias today and tomorrow, the Mid-Atlantic will be in line for more showers and thunderstorms. Locally heavy rain is possible with these storms. High pressure will allow for sunny skies and lower humidity across New York and New England. Highs will generally be in the 70s across the region. Some parts of southeastern Virginia may see temperatures into the 80s. Northern New England and the Adirondacks of New York will be in the 60s.
West
Scattered thunderstorms are possible from the Rockies to the high Plains of Wyoming and Colorado today with an isolated thunderstorm risk extending westward into the Nevada Great Basin and the central Sierra. It will be a dry day along the West Coast. Temperatures will be slightly above average in the Far West and either average or below average from Wyoming to New Mexico. Highs will range from the 50s and 60s in Wyoming and 70s in the Willamette Valley to the low 90s in the Central Valley of California and near 100 in parts of the Desert Southwest.(National Weather Service, various media sources)

Fire Management Assistance Grant (FMAG)

No activity.   (FEMA HQ)

Tropical Weather Outlook

Atlantic:
No activity.
Eastern Pacific:
No activity.
Western Pacific:
No activity affecting US territories.(NOAA, HPC, National Hurricane Center, Central Pacific Hurricane Center and the Joint Typhoon Warning Center)

Earthquake Activity

No new activity (FEMA HQ)

Preliminary Damage Assessments

No new activity (FEMA HQ)

Wildfire Update

National Preparedness Level:  1
National Fire Activity as of  Sunday, May 24, 2009:
Initial attack activity:  Light (69 new fires)
New large fires:  0
Large fires contained:  2
Uncontained large fires:  1
Fire Weather:
No significant activity (National Interagency Fire Center, National Incident Information Center, NOAA/NWS Storm Prediction Center, NGB)

Disaster Declaration Activity

No new activity (FEMA HQ)

Last Modified: Thursday, 04-Jun-2009 16:24:55 EDT