Remaining Above Normal
Seasonably warm temperatures will continue through the weekend.
General Overview: WIDESPREAD RAIN AND THUNDERSTORM ACTIVITY EXPECTED ACROSS MUCH OF THE NATION OVER THE NEXT SEVERAL DAYS. MULTIPLE FRONTAL SYSTEMS WILL BRING PRECIPITATION TO THE GREAT LAKES, MIDWEST, AND PORTIONS OF THE EAST COAST. THE WEST WILL SEE SCATTERED PRECIPITATION WITH SOME MIXED PRECIPITATION IN THE PACIFIC NORTHWEST. TEMPERATURES WILL GENERALLY TREND ABOVE NORMAL FOR MUCH OF THE COUNTRY, PARTICULARLY ACROSS THE NORTHERN PLAINS AND PACIFIC NORTHWEST.
EAST: A frontal boundary will bring rain and thunderstorms to portions of the Northeast and Mid-Atlantic regions through Saturday. High pressure will briefly build in on Sunday before another low pressure system approaches from the offshore Atlantic waters. By Monday and Tuesday, a new frontal system will push through the region with additional rain chances. The coastal areas from the Carolinas to New England will experience periods of rain, with some thunderstorm activity possible along the immediate coast. The Ohio Valley and southern Appalachians will see scattered precipitation as well, with the heaviest rainfall expected along the coastal regions.
Temperature Anomalies:
-Days 1-4: Slightly above normal temperatures for most of the region with +2 to +6°F anomalies, particularly across the Ohio Valley and Mid-Atlantic. Parts of New England may see near normal temperatures with some slightly below normal readings in isolated areas.
-Days 5-8: Warming trend continues with most areas experiencing +2 to +4°F above normal temperatures. The warming will be most pronounced across the interior Northeast and northern Appalachians.
-Days 9-10: Temperatures moderate to near normal for most areas with only slight positive anomalies remaining across parts of New England and the northern Mid-Atlantic.
CENTRAL: Active weather pattern will dominate the Central regions with multiple systems bringing rain and thunderstorms. The Upper Midwest and Great Lakes will see widespread precipitation through the weekend, with thunderstorm activity focused across the Central Plains and Midwest. A low pressure system over the Northern Plains will gradually move eastward, bringing rain to the Great Lakes region. By Monday and Tuesday, a new frontal boundary will organize across the Central Plains and push eastward, bringing another round of thunderstorms to the region. The Mississippi Valley will experience periods of rain throughout the forecast period.
Temperature Anomalies:
-Days 1-4: Above normal temperatures across most of the region with +2 to +6°F anomalies, particularly across the Northern Plains and Upper Midwest. The Central Plains will see more modest warming of +1 to +3°F above normal.
-Days 5-8: Continued above normal temperatures with the warmest anomalies (+4 to +8°F) shifting toward the Northern Plains and Canadian border. The Midwest will maintain +2 to +4°F above normal readings.
-Days 9-10: Temperatures remain above normal across the Northern Plains with +2 to +6°F anomalies, while the rest of the region trends closer to seasonal norms.
WEST: Multiple low pressure systems will affect the Western states, bringing periods of precipitation to the Pacific Northwest, Northern Rockies, and portions of the Southwest. The Pacific Northwest will see rain along the coast with some mixed precipitation in higher elevations. The Southwest will experience scattered thunderstorm activity, particularly across Arizona and New Mexico. By Sunday and Monday, precipitation will become more widespread across the Intermountain West. California will see varying precipitation chances, with the best opportunities along the northern coast and Sierra Nevada.
Temperature Anomalies:
-Days 1-4: Above normal temperatures for much of the region, with the warmest anomalies (+6 to +10°F) across the Pacific Northwest and Northern Rockies. The Southwest will see more modest warming of +2 to +4°F above normal.
-Days 5-8: Continued above normal temperatures across the region with the warmest anomalies (+4 to +8°F) persisting in the Pacific Northwest and Northern Rockies. The warming expands slightly into portions of the Great Basin.
-Days 9-10: Temperatures remain above normal across most of the region with +2 to +6°F anomalies, particularly across the Northern Rockies and Pacific Northwest.
TROPICAL:
ATLANTIC BASIN: Tropical Storm Gabrielle approximately 650nm SE of the Northern Leeward Islands. Gabrielle is currently moving northwest, with a gradual turn north and eventually northeast expected this weekend and into early next week. Tropical Storm Gabrielle is not expected to impact the United States.