High Pressure Persists

General Overview: ACTIVE WEATHER PATTERN ACROSS THE NATION WITH MULTIPLE PRECIPITATION THREATS OVER THE NEXT SEVERAL DAYS. MIXED PRECIPITATION AND RAIN/SNOW EXPECTED ACROSS THE NORTHERN ROCKIES AND NORTHERN PLAINS, WHILE THUNDERSTORMS DEVELOP ACROSS THE SOUTHEAST AND GULF COAST. SIGNIFICANT TEMPERATURE CONTRASTS WILL EXIST WITH MUCH ABOVE NORMAL TEMPERATURES ACROSS THE NORTHERN PLAINS AND BELOW NORMAL TEMPERATURES IN PARTS OF THE WEST.

EAST: A high pressure system will dominate the Northeast through the weekend, bringing generally dry conditions. However, as we move into Sunday and Monday, rain and thunderstorm activity will increase across the Southeast and Gulf Coast regions. Florida and coastal Georgia will experience scattered thunderstorms beginning Saturday, with this activity expanding northward and intensifying through early next week. Some of these storms could produce locally heavy rainfall, particularly along the immediate Gulf Coast. By midweek, a cold front will push through the eastern states, bringing a line of showers and possible thunderstorms from the Mid-Atlantic southward. This front will help clear out moisture and usher in slightly cooler air for the latter part of the week.

Temperature Anomalies:

-Days 1-3: Near normal temperatures for most of the Northeast and Mid-Atlantic, with slightly above normal temperatures (2-4°F) developing across portions of the Southeast.

-Days 4-6: Warming trend with temperatures climbing to 4-6°F above normal across much of the Northeast and Mid-Atlantic, particularly focused on New England. Near normal temperatures persist in the Southeast.

-Days 7-10: Gradual cooling to near normal or slightly below normal temperatures across most eastern states as the cold front passes through.

CENTRAL: An active weather pattern will affect the Central Plains and Midwest over the next several days. A low pressure system moving through the Northern Plains will bring rain and thunderstorms to portions of North Dakota, South Dakota, Minnesota, and Iowa through the weekend. Some of this precipitation may mix with snow in the northern reaches of this region. By Sunday into Monday, precipitation will expand southward and eastward into the Midwest and Great Lakes. Rain and thunderstorms will develop across portions of Wisconsin, Iowa, and Illinois. As the system progresses, a cold front will push through the central states by midweek, bringing additional precipitation chances.

Temperature Anomalies:

-Days 1-3: Significantly above normal temperatures across the Northern Plains and Upper Midwest, with anomalies of 8-12°F above normal in parts of the Dakotas, Minnesota, and Iowa. Near normal temperatures for the Southern Plains.

-Days 4-6: Continued above normal temperatures across the Northern Plains and Midwest, gradually moderating but still 4-8°F above normal. Warming trend begins in the Southern Plains.

-Days 7-10: Cooling trend with temperatures returning closer to normal across most of the central states, though still remaining slightly above normal (2-4°F) across the Northern Plains.

WEST: A complex weather pattern will affect the Western states through the period. Multiple low pressure systems will bring periods of precipitation to the Pacific Northwest, Northern Rockies, and Intermountain West. Mixed precipitation is expected across higher elevations of Idaho, Montana, Wyoming, and Colorado, with rain at lower elevations. The Southwest will see generally drier conditions, though isolated showers and thunderstorms may develop in parts of Arizona and New Mexico by early next week. California will remain mostly dry with the exception of some light precipitation possible in the northern portions of the state.

Temperature Anomalies:

-Days 1-3: Below normal temperatures across portions of the Pacific Northwest and Great Basin, with anomalies of 4-6°F below normal. Near normal temperatures for California and the Southwest.

-Days 4-6: Continued below normal temperatures across the Northern Rockies and parts of the Pacific Northwest, gradually moderating. Slightly above normal temperatures developing in the Southwest.

-Days 7-10: Temperatures trending closer to normal across most western states, with slightly above normal temperatures (2-4°F) developing across the interior West.

TROPICAL:
ATLANTIC BASIN:
1. Southwestern Atlantic: A weak area of low pressure located southeast of Florida is expected to drift west-northwestward towards Florida within the next couple of days. Given unfavorable conditions for further development, significant development is not expected. However, heavier rainfall and possible flooding cannot be ruled out through the weekend in southern Florida. Tropical cyclone formation chance remains low at 10% through the next 7 days.

2. Eastern Atlantic: A tropical wave near the coast of Africa is currently producing a broad areas of shower and thunderstorms. This wave is expected to interact with another disturbance over the eastern tropical Atlantic and continue to move westward. Moderately favorable environmental conditions may lead to slow development of this system within the next few days, and a tropical depression could form near the end of next week. Any potential impact of this system to the US would likely be beyond 10 days. Tropical cyclone formation chance is medium at 50% through the next 7 days.

EAST PACIFIC BASIN: No tropical development is expected to impact the western US in the next 7 days.