Warm Anomalies Persist
Temperatures will remain well above seasonale norms again today.
General Overview: ACTIVE WEATHER PATTERN BRINGS MULTIPLE HAZARDS ACROSS THE NATION THROUGH THE WEEKEND. FREEZING RAIN THREAT FOR PORTIONS OF THE UPPER MIDWEST AND GREAT LAKES, WHILE SEVERE THUNDERSTORMS WITH HEAVY RAIN AND FLASH FLOODING POTENTIAL DEVELOP ACROSS THE GULF COAST STATES. PACIFIC NORTHWEST CONTINUES TO SEE PERIODS OF RAIN AND MOUNTAIN SNOW.
EAST:
A complex weather pattern will affect the Eastern U.S. over the next several days. For Thursday into Friday, a high pressure system off the Atlantic coast will keep conditions relatively dry for the Northeast and Mid-Atlantic. However, as a cold front pushes eastward, rain and thunderstorms will develop across portions of the Southeast and Gulf Coast states. By Friday, this system intensifies with rain spreading northeastward along the Eastern Seaboard. The most significant concern will be across portions of the Gulf Coast states, particularly Mississippi, Alabama, and Louisiana, where severe thunderstorms are possible with heavy rainfall that could lead to flash flooding. As the weekend progresses, precipitation will continue to push up the East Coast, transitioning to snow in parts of the Northeast and New England by Saturday. Maine could see a period of freezing rain as warmer air moves in aloft. By Sunday into Monday, high pressure builds in from the west, bringing drier conditions to much of the region.
Temperature Anomalies:
-Days 1-3: Significantly above normal temperatures across most of the East, with anomalies of 6-12°F above normal, particularly in the Mid-Atlantic and Northeast regions.
-Days 4-6: Continued above normal temperatures for most areas, though gradually moderating. The Northeast will remain 6-8°F above normal while the Southeast begins to cool closer to seasonal averages.
-Days 7-10: Temperatures trend closer to normal for most of the region, with only slight positive anomalies remaining in the Northeast by day 10.
CENTRAL:
The Central U.S. faces multiple weather hazards over the coming days. On Thursday, a developing low pressure system over the Central Plains will bring rain, snow, and mixed precipitation to the region. Of particular concern is the potential for freezing rain across portions of Wisconsin and the Upper Great Lakes, which could lead to dangerous travel conditions and possible power outages. As this system moves eastward, snow will spread across portions of Nebraska, Iowa, and the Northern Plains. By Friday, the low pressure center shifts toward the Mississippi Valley, bringing rain and thunderstorms to the South Central states. The rain/snow line will push northward through the Central Plains. The weekend will see improving conditions as high pressure builds in from the west, though another system may affect the Northern Plains by early next week. The Mississippi Valley will continue to see rain chances through Saturday before drier air arrives.
Temperature Anomalies:
-Days 1-3: Significantly above normal temperatures, with anomalies of 8-12°F above normal across much of the Central Plains and Midwest.
-Days 4-6: Temperatures begin to moderate but remain above normal for most areas. The Northern Plains will see a cooling trend while the Southern Plains remain warmer than average.
-Days 7-10: Near normal temperatures return to much of the region, though the Northern Plains and Upper Midwest will experience above normal temperatures of 4-8°F.
WEST:
The Western U.S. will experience a relatively quiet weather pattern compared to the rest of the country. Multiple high pressure systems will dominate across the Southwest and Intermountain West, bringing generally dry conditions to these areas. The Pacific Northwest, however, will continue to see periods of rain along the coast and snow in the higher elevations of the Cascades. By the weekend, precipitation chances increase for parts of the Northern Rockies as well. California will remain mostly dry through the period, though some light precipitation is possible in the northern portions of the state. The Southwest will experience dry conditions with gradually warming temperatures through the period.
Temperature Anomalies:
-Days 1-3: Near to slightly below normal temperatures along the Pacific Coast, with cooler than normal conditions in parts of California and the Southwest. The Northern Rockies will see slightly above normal temperatures.
-Days 4-6: Warming trend begins across most of the West, with temperatures climbing to 3-6°F above normal in the Northern Rockies and Intermountain West. The Southwest remains near normal.
-Days 7-10: Continued above normal temperatures for much of the region, particularly in the Northern Rockies and Pacific Northwest where anomalies of 4-8°F above normal are expected.
TROPICAL:
No tropical cyclone activity is expected during the next 7 days in either the Atlantic or Eastern Pacific basins.