System Continues Southwest
Scattered showers and thunderstorms, and high elevation snow showers, will continue across southern California/Nevada/Arizona; rain/snow showers continue across the Olympic Mountains.
General Overview: ACTIVE WEATHER PATTERN ACROSS THE NATION WITH HEAVY RAIN AND THUNDERSTORMS ACROSS THE SOUTH CENTRAL STATES, MIXED PRECIPITATION IN THE PACIFIC NORTHWEST AND NORTHERN ROCKIES, AND RAIN ALONG THE EASTERN SEABOARD. SIGNIFICANT TEMPERATURE ANOMALIES WITH ABOVE NORMAL TEMPERATURES ACROSS THE SOUTH AND SOUTHEAST, GRADUALLY TRANSITIONING TO BELOW NORMAL TEMPERATURES IN THE CENTRAL STATES BY LATE IN THE PERIOD.
EAST: An area of low-pressure will bring rain to much of the Eastern US Friday and into the weekend. By Saturday, the coastal areas will continue to see rain while interior sections begin to dry out. The Carolinas may experience some thunderstorm activity as the front moves through. Sunday, high pressure builds across the region, bringing drier conditions to most areas. Unsettled conditions will return to much of the Eastern US into early next week as a new area of low-pressure and associated frontal boundary sweeps across the region.
Temperature Anomalies:
-Days 1-3: Above normal temperatures across much of the Southeast and Mid-Atlantic, with anomalies of 6-12°F above normal in portions of Tennessee, Kentucky, and the Carolinas. Near normal temperatures for the Northeast.
-Days 4-6: Continued above normal temperatures for the Southeast, though moderating somewhat. The Mid-Atlantic and Northeast will see temperatures closer to seasonal norms with slight warming.
-Days 7-10: A cooling trend develops with temperatures falling to near or slightly below normal across most of the region by days 9-10, with the coolest anomalies developing in the Ohio Valley and western portions of the Northeast.
CENTRAL: The Central Plains and parts of the Mississippi Valley and Midwest will experience rain activity on Friday with the potential for heavy rainfall across portions of eastern Texas, Oklahoma, Arkansas, and Louisiana. As the system progresses, precipitation will shift eastward with areas drying out Saturday. By Sunday and Monday, a new system begins to develop, bringing rain to much of the Central/Southern Plains and into the Mississippi Valley. The system will depart eastward through Tuesday, with an occluded front developing and bringing precipitation across the Upper Midwest.
Temperature Anomalies:
-Days 1-3: Significantly above normal temperatures across the South Central region, with anomalies of 8-12°F above normal in parts of Arkansas, Mississippi, and surrounding states. Near normal temperatures for the Northern Plains.
-Days 4-6: Moderating temperatures with continued above normal readings across the Southern Plains and lower Mississippi Valley. A cooling trend begins in the Northern Plains and Upper Midwest.
-Days 7-10: A significant pattern change with below normal temperatures spreading across much of the Central states, particularly from the Northern Plains through the Midwest, with anomalies of 3-6°F below normal by the end of the period.
WEST: The Western United States will see several weather systems affecting the region. Initially, low pressure along the Pacific Northwest coast will bring rain and mixed precipitation to Washington and Oregon, with some precipitation extending into northern California. The Southwest, particularly Arizona, will experience heavy rain and potential flash flooding on Friday. By Saturday, high pressure builds over much of the Interior Northwest and Northern Rockies, while low pressure systems continue to affect the Pacific Northwest coast and portions of the Southwest. As we move into Sunday and early next week, precipitation focuses on the Pacific Northwest and Northern Rockies, with a mix of rain and snow. The Southwest will see thunderstorm activity developing in parts of New Mexico and western Texas Sunday into Monday.
Temperature Anomalies:
-Days 1-3: Generally near to slightly above normal temperatures across most of the West, with the warmest anomalies in the Northern Rockies and parts of the Southwest.
-Days 4-6: Continued mild temperatures for most areas, with some cooling in the Pacific Northwest. The Southwest remains slightly above normal.
-Days 7-10: A cooling trend develops across the Northern Rockies and parts of the Pacific Northwest with below normal temperatures, while the Southwest maintains slightly above normal readings.
TROPICAL: No tropical cyclone activity is expected during the next 7 days in either the Atlantic or Eastern Pacific basins.