Midwest
An upper-level disturbance moving eastward in the Plains may trigger showers and thunderstorms, some severe, from the western Dakotas to western Kansas. Flood Warnings continue for numerous rivers in Illinois, Indiana, Missouri, and Michigan. Highs will be in the 60s in the northern Great Lakes to the 80s in the Ohio Valley.
Northeast
A cold front moving through the region may bring cloudiness and light rain from New England to the Chesapeake Bay. High temperatures will range from the 50s and 60s in Maine to the 70s in West Virginia.
South
An upper-level disturbance over the Mississippi Valley will bring more showers and scattered thunderstorms across parts of Arkansas, western Tennessee, Louisiana and western Alabama.
Numerous Flood Watches and Warnings remain in effect for portions of Texas and Louisiana.
High temperatures will range from the 70s and 80s in the Carolinas to the low 90s in Texas.
West
An upper-level disturbance over the high Plains will bring showers and scattered thunderstorms from Montana to Colorado and in northern Idaho and Washington. Temperatures will range from the 40s in the northern Rockies to the 100s in the Desert Southwest. (NOAA, National Weather Service, Various Media Sources)
Region V
Michigan
Illinois
Ohio
Indiana
FEMA Region VI
Louisiana
Texas
Presidio update: Reservoir releases out of Luis Leon reservoir will continue to next week with considerable fluctuations in water levels. Major flooding will continue; however, potential levee failure will not be a catastrophic event due to water level rising slowly. Mandatory evacuations of low-lying areas in effect; approximately 4,500 residents remain at risk. Five Army helicopters and personnel are providing support and placement of "super sacks" sandbags to add an additional foot on top of the levee.
Atlantic/Caribbean:
Invest 93 - Medium Potential for Development
A tropical wave accompanied by a surface low pressure system over the northeastern Caribbean Sea is producing widespread cloudiness and showers over the Lesser Antilles and adjacent Caribbean and Atlantic waters. This system continues to show signs of organization and upper-level winds are expected to become a little more favorable for development over the next couple of days. A tropical depression could form during this time as the system moves slowly northwestward.
Area 2 - Low Potential for Development
The broad area of low pressure previously over the southwestern Caribbean Sea has moved inland over Nicaragua. No development of this system is expected.
Eastern Pacific:
Invest 90 - Medium Potential for Development
A broad low pressure area is centered about 275 miles southeast of Acapulco, Mexico. This system has changed little in organization over the past several hours; however, upper-level winds remain marginally favorable for the development of a tropical depression during the next couple of days as the system moves slowly toward the northwest parallel to the coast of Mexico.
Western Pacific:
No tropical cyclone activity affecting United States Territories.(NOAA, HPC, National Hurricane Center, Central Pacific Hurricane Center and the Joint Typhoon Warning Center)
No new activity (FEMA HQ)
No new activity (FEMA HQ)
National Fire Activity as of Saturday, September 20, 2008:
National Wildfire Preparedness Level: 2
Initial attack activity: Light (59)
New large fires: 1
Uncontained large fires: 6
Large fires contained: 1
States with large fires: CA, MT, OR
Predictive Fire: Thunderstorm activity today will be mainly across interior portions of the Pacific Northwest and northeastern California. These storms will be a mix of wet and dry, but this entire area should see a wetter transition to showers later today. Otherwise, it will be seasonably warm and dry across the Great Basin, Rockies, and much of the Northeast. Scattered showers and wet thunderstorms are forecast for most of the Southeast. (NIFC, NICC)
No new activity (FEMA HQ)
Last Modified: Monday, 22-Sep-2008 08:23:48 EDT