Activity To The North and South

General Overview: ACTIVE WEATHER PATTERN ACROSS THE NATION WITH HEAVY RAIN AND FLASH FLOODING POTENTIAL IN TEXAS, MIXED PRECIPITATION IN THE PACIFIC NORTHWEST AND NORTHERN ROCKIES, AND RAIN/SNOW ACROSS THE GREAT LAKES AND NORTHEAST. TEMPERATURES WILL BE ABOVE NORMAL FOR MUCH OF THE CENTRAL AND SOUTHERN REGIONS INITIALLY, WITH COOLING TREND DEVELOPING IN THE NORTHERN TIER BY LATE WEEK.

EAST:
A frontal boundary will move through the Northeast and Mid-Atlantic regions over the weekend, bringing periods of rain to coastal areas and mixed precipitation to interior sections. The Great Lakes region will see snow and mixed precipitation as low pressure systems track across the northern tier. By early next week, a developing system will bring more widespread precipitation to the Northeast and Mid-Atlantic, with rain along the coast transitioning to snow inland. The Ohio Valley will remain relatively dry until midweek when precipitation chances increase. The Southeast will experience scattered rain and thunderstorms along the Gulf Coast, with generally dry conditions prevailing across the Carolinas and Virginia until later in the week when a cold front pushes through.

Temperature Anomalies:
-Days 1-3: Above normal temperatures across most of the region, particularly in the Southeast where readings will be 6-12°F above normal. Near normal temperatures in the Northeast.
-Days 4-6: Continued above normal temperatures for the Southeast and Mid-Atlantic, with cooling to near normal in the Northeast and Great Lakes regions.
-Days 7-10: Transition to below normal temperatures across most of the region, with readings 2-6°F below normal by days 9-10.

CENTRAL:
The most significant weather threat will be across eastern Texas and Oklahoma where heavy rain and potential flash flooding is expected Sunday into Monday. This area of concern shows potential for excessive rainfall, particularly in eastern Texas. Meanwhile, rain and thunderstorms will spread across the Southern Plains and into portions of the Midwest by early week. A developing low pressure system will track through the Central Plains by Monday, bringing rain that will transition to snow across portions of the Upper Midwest and Great Lakes. High pressure will dominate the Northern Plains initially, but precipitation chances increase by midweek as frontal boundaries move through the region.

Temperature Anomalies:
-Days 1-3: Significantly above normal temperatures across the Southern Plains and lower Mississippi Valley, with readings 6-12°F above normal. Near normal temperatures in the Northern Plains.
-Days 4-6: Continued above normal temperatures across most of the region, particularly in the Central Plains where readings will be 4-8°F above normal.
-Days 7-10: Cooling trend develops with below normal temperatures spreading southward from the Northern Plains, eventually reaching near to slightly below normal across most of the region by day 10.

WEST:
Multiple weather systems will impact the Pacific Northwest and Northern Rockies with periods of rain, mountain snow, and mixed precipitation. The Southwest will see generally dry conditions initially, though precipitation chances increase across Arizona and New Mexico by Sunday as moisture spreads northward. The Pacific Northwest will continue to see periods of rain and mountain snow throughout the period as systems move onshore. California will remain mostly dry with only light precipitation possible in northern portions of the state. By midweek, a stronger system may bring more widespread precipitation to the Northwest and Northern Rockies.

Temperature Anomalies:
-Days 1-3: Above normal temperatures across most of the region, particularly in the Rockies where readings will be 3-6°F above normal. Near normal along the immediate Pacific coast.
-Days 4-6: Continued above normal temperatures for the Southwest and Great Basin, with cooling to near normal in the Pacific Northwest and Northern Rockies.
-Days 7-10: Transition to below normal temperatures across the Northern Rockies and Pacific Northwest, with readings 6-12°F below normal in parts of Montana and Idaho by days 9-10. Southwest remains near to slightly above normal.