Above Average Temperatures Persist
Temperatures remain above normal by 5-10 degrees today.
General Overview: ACTIVE WEATHER PATTERN ACROSS THE WESTERN AND CENTRAL US WITH MULTIPLE SYSTEMS BRINGING RAIN, SNOW, AND MIXED PRECIPITATION OVER THE NEXT SEVERAL DAYS. HIGH PRESSURE DOMINATES THE EASTERN US INITIALLY, WHILE THUNDERSTORMS DEVELOP IN THE SOUTHWEST. TEMPERATURES WILL REMAIN ABOVE NORMAL FOR MUCH OF THE CENTRAL US THROUGH THE PERIOD.
EAST: The southeastern United States will experience relatively quiet weather initially under high pressure influence. Through the remainder of the weekend, periods of snow and gusty winds will affect the interior Northeast. As we move through the period, precipitation will begin to affect portions of the Northeast and Mid-Atlantic with rain spreading into the Ohio Valley by Tuesday. Mixed precipitation is possible across portions of the Great Lakes region, particularly near the Canadian border. By midweek, a developing low pressure system will bring increasing rain chances to the Ohio Valley and portions of the Southeast.
Temperature Anomalies:
-Days 1-3: Generally near normal temperatures across most of the East, with slightly above normal readings in the Mid-Atlantic and portions of the Southeast. The Northeast will experience near to slightly below normal temperatures.
-Days 4-6: Warming trend begins with above normal temperatures spreading across much of the region, particularly in the Ohio Valley and Mid-Atlantic where temperatures could reach 6-8°F above normal. The Southeast will experience moderately above normal temperatures.
-Days 7-10: Above normal temperatures continue across much of the region, though gradually moderating. The most pronounced warmth will be in the Mid-Atlantic and portions of the Southeast, with temperatures 3-6°F above normal, diminishing toward the end of the period.
CENTRAL: Initially, high pressure will provide dry conditions across the Central US, but precipitation will develop across the Northern Plains and Midwest as low pressure moves through on Monday. As this system evolves, an occluded front will develop by Tuesday, bringing a mix of precipitation types to the region. By midweek, thunderstorm activity will increase across portions of the South Central states with potential for heavy rainfall. The Northern Plains will see mixed precipitation, including some snow.
Temperature Anomalies:
-Days 1-3: Significantly above normal temperatures across much of the Central US, with anomalies of 6-12°F above normal, particularly in the Central Plains and portions of the Midwest.
-Days 4-6: Continued above normal temperatures focused on the South Central states, with the core of warmth (8-12°F above normal) centered over Oklahoma, Arkansas, and surrounding areas.
-Days 7-10: Gradual moderation of the temperature anomalies, though still remaining above normal for most areas. By the end of the period, temperatures will trend closer to seasonal norms across the Northern Plains and Upper Midwest.
WEST: Multiple low pressure systems will affect the Western US throughout the forecast period, bringing periods of precipitation to much of the region. The Pacific Northwest and Northern Rockies will see rain and mountain snow, while the Southwest experiences rain and thunderstorms, some potentially heavy. California will see periods of rain, particularly along the coast and northern portions of the state. By Monday, precipitation will expand across the Intermountain West with mixed precipitation in higher elevations. The pattern remains active through midweek with continued chances for rain and mountain snow across much of the region. Areas of Arizona and Southern California may experience locally heavy rainfall with possible flash flooding.
Temperature Anomalies:
-Days 1-3: Above normal temperatures across much of the West, particularly in the interior portions where anomalies of 4-8°F above normal are expected. Coastal areas will be closer to normal.
-Days 4-6: Continued above normal temperatures for most areas, though not as warm as the initial period. The Northern Rockies and Pacific Northwest will see temperatures trending closer to normal.
-Days 7-10: Temperatures gradually moderate toward normal across most of the region, with only slight positive anomalies remaining by the end of the period.
TROPICAL: No tropical cyclone activity is expected during the next 7 days in either the Atlantic or Eastern Pacific basins.