Scattered Rain/Snow Showers
Scattered rain/snow showers are expected to continue across the Pacific Northwest, northern Rockies, and move into the High Plains.
General Overview: ACTIVE WEATHER PATTERN ACROSS THE EASTERN HALF OF THE COUNTRY WITH RAIN AND THUNDERSTORMS SPREADING FROM THE SOUTHEAST TO THE NORTHEAST THROUGH FRIDAY. MIXED PRECIPITATION AND POTENTIAL FREEZING RAIN ACROSS PORTIONS OF THE NORTHERN PLAINS AND UPPER MIDWEST. SEVERAL SYSTEMS WILL BRING RAIN AND MOUNTAIN SNOW TO THE PACIFIC NORTHWEST AND NORTHERN ROCKIES THROUGH THE PERIOD.
EAST:
A significant weather system will bring widespread rain and thunderstorms to much of the Eastern Seaboard through Friday. The Southeast and Mid-Atlantic regions will experience the heaviest rainfall, with rain and thunderstorms extending from Florida northward through the Carolinas and into the Northeast. By Saturday, precipitation will focus more on the Northeast while conditions gradually improve across the Southeast.
As the system moves offshore by Sunday, a new low pressure system will develop off the East Coast, bringing additional rain to coastal areas and potentially some mixed precipitation across interior portions of New England. The pattern suggests possible freezing rain concerns in parts of the Northeast on Friday evening, particularly in higher elevations.
Temperature Anomalies:
-Days 1-3: Near normal to slightly below normal temperatures across much of the Northeast, with slightly above normal temperatures developing across the Southeast. Cooler conditions will be most noticeable in New England.
-Days 4-6: A significant cooling trend will develop with below normal temperatures spreading across the entire Eastern Seaboard, with the coldest anomalies (6-10 degrees below normal) focused on the Southeast and Mid-Atlantic by Tuesday.
-Days 7-10: Temperatures will moderate toward the end of the period, with near normal temperatures returning to most areas by day 10. Florida and the coastal Southeast will see a quicker return to normal conditions.
CENTRAL:
Multiple weather systems will affect the Central regions through the period. Initially, mixed precipitation and potential freezing rain will impact portions of the Northern Plains and Upper Midwest. A low pressure system tracking through the Central Plains will bring rain to the Midwest by Saturday, with some mixed precipitation possible on the northern edge of the system.
By Sunday into Monday, high pressure will build across the Northern Plains while a cold front pushes through the region, bringing cooler temperatures. The Ohio Valley and lower Midwest will see periods of rain through the weekend before drier conditions develop early next week.
Temperature Anomalies:
-Days 1-3: Above normal temperatures across most of the Central Plains and Midwest, with anomalies of 3-6 degrees above normal. Cooler conditions will be present across the Northern Plains.
-Days 4-6: A significant pattern change will bring below normal temperatures to most of the region, particularly across the Midwest and Mississippi Valley where temperatures could drop 6-10 degrees below normal.
-Days 7-10: Temperatures will moderate with above normal conditions returning to the Central and Southern Plains. By the end of the period, most areas will experience temperatures 3-6 degrees above normal, particularly across Oklahoma and Kansas.
WEST:
High pressure will dominate the Southwest initially, while several systems bring precipitation to the Pacific Northwest and Northern Rockies. Mountain snow is expected across higher elevations of the Cascades and Northern Rockies. By the weekend, drier conditions will spread across most of the West as high pressure builds.
A new system may approach the Pacific Northwest by early next week, bringing another round of precipitation to coastal areas and mountain snow to higher elevations. The Southwest will remain largely dry throughout the period with above normal temperatures.
Temperature Anomalies:
-Days 1-3: Above normal temperatures across most of the West, particularly across the Southwest and Intermountain regions where temperatures will be 3-6 degrees above normal.
-Days 4-6: Continued warm anomalies across the West, with the warmest conditions focused on the Great Basin and Rocky Mountain regions where temperatures could reach 6-10 degrees above normal.
-Days 7-10: Persistent above normal temperatures will continue across most of the West, with the warmest anomalies (6-10 degrees above normal) centered over Wyoming, Colorado, and portions of the Southwest.
TROPICAL: No tropical cyclone activity is expected during the next 7 days in either the Atlantic or Eastern Pacific basins.