National Weather Summary for Wednesday, April 18, 2018
by David Moran, on Apr 18, 2018 10:12:48 AM
Snow will continue from portions of the Northern Plains into the Great Lakes through early Thursday morning as an area of low pressure continues to move eastward. Elevated winds and seas will continue for the western Gulf of Mexico through early Wednesday afternoon.
- Snow Continuing for the Northern Plains and Great Lakes through Early Thursday Morning
- Elevated Winds and Seas Continuing through Early Wednesday Afternoon for the Western Gulf of Mexico
- Thunderstorms for Southern New Mexico and West Texas on Thursday
- Potential for Thunderstorms Friday across West Texas and Southeastern New Mexico
- Snow for the Central Rockies Friday and Saturday
Snow Continuing for the Northern Plains and Great Lakes through Early Thursday Morning
The area of low pressure that is currently bringing snow to the Northern Plains and Upper Midwest will continue to move across the region through early Thursday morning. Moderate to heavy snowfall will continue to the north and west of the low as temperatures fall below freezing. Snow accumulations will range 3-6 inches with locally higher amounts in excess of 8 inches to the north of the low. Near the center of the low where temperatures will be near freezing, a wintry mix will be possible. This will limit snow accumulations, but some light freezing rain may develop. Ice accumulations will generally be less than 0.10 inch.
Major Cities in Region: Sioux Falls, SD, Des Moines, IA, Rochester, MN, Madison, WI, Milwaukee, WI
Snow Accumulation for Wednesday
Elevated Winds and Seas Continuing through Early Wednesday Afternoon for the Western Gulf of Mexico
Enhanced southerly winds will continue across the western Gulf of Mexico through early Wednesday afternoon. Winds will range 20-25 knots with gusts in excess of 35 knots. Seas will build to 6-8 feet as a result. Conditions will begin to gradually subside during the morning hours on Wednesday.
WDT Marine Weather Advisory
Thunderstorms for Southern New Mexico and West Texas on Thursday
An area of low pressure is forecast to develop near the Four Corners region on Thursday. In response to the low, southeasterly winds will increase available moisture with a dry line developing over central New Mexico. With the increased moisture ahead of the dry line, instability is forecast to increase during the afternoon due to strong surface heating. This instability will result in the potential for a few strong to severe thunderstorms to develop by late afternoon. Strong winds and large hail will be the primary hazards with these storms.
Major Cities in Region: El Paso, TX, Alamogordo, NM, Roswell, NM, Carlsbad, NM
SPC Convective Outlook for Thursday
Potential for Thunderstorms Friday across West Texas and Southeastern New Mexico
As the surface low described above continues to move eastward, increased moisture associated with southerly flow is forecast on Friday. As a result, a dry line is forecast to develop with instability building to the east of the dry line during the afternoon hours. Instability should be sufficient for the development of thunderstorms during the afternoon. Strong winds and large hail will be the primary hazards with these storms.
Major Cities in Region: Roswell, NM, Carlsbad, NM, Odessa, TX, Midland, TX
SPC Convective Outlook for Friday
Snow for the Central Rockies Friday and Saturday
An area of low pressure developing over the Four Corners region will continue to move eastward Friday into Saturday. Moderate to heavy snow is expected to begin across Colorado on Friday and continue into Saturday. Snow will primarily be confined to the higher elevations where temperatures will be below freezing. Total accumulations will range 6-10 inches. Winds between 20-25 mph with gusts in excess of 35 mph are forecast.
Major Cities in Region: Grand Junction, CO, Aspen, CO, Colorado Springs, CO
Snow Accumulation for Friday and Satutrday
A Look Ahead
Thunderstorms may develop across portions of the Plains on Saturday as an upper level system moves out of the Rockies. This activity will continue to move across the Southeast through Monday. Some light to moderate snow may develop across the Northern Rockies and Plains early next week.
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