Cooler Today

General Overview: ACTIVE WEATHER PATTERN ACROSS THE NATION WITH MULTIPLE SYSTEMS BRINGING PRECIPITATION TO SEVERAL REGIONS. MIXED PRECIPITATION AND SNOW EXPECTED ACROSS THE NORTHERN TIER, WHILE RAIN AND THUNDERSTORMS DEVELOP ALONG FRONTAL BOUNDARIES IN THE SOUTHEAST AND GULF COAST. TEMPERATURE CONTRASTS WILL BE SIGNIFICANT WITH ABOVE NORMAL TEMPERATURES IN THE WEST AND BELOW NORMAL CONDITIONS DEVELOPING IN THE EASTERN HALF OF THE COUNTRY BY LATE WEEK.

EAST: Thursday, high pressure builds in temporarily before another system approaches from the west. By Friday into the weekend, a more significant cold front will sweep through the region, bringing rain to the coastal areas and a rain/snow mix to interior locations. Thunderstorms may develop along the front as it pushes through the Southeast and reaches the Gulf Coast by the weekend. The Mid-Atlantic and Southeast will experience primarily rain events with the potential for some thunderstorm activity, particularly as the weekend system moves through.

Temperature Anomalies:

-Days 1-3: Near normal to slightly below normal temperatures across most of the Northeast, with slightly above normal temperatures in the Southeast and coastal regions.

-Days 4-6: Cooling trend begins with temperatures falling to below normal across much of the region, particularly in the interior Northeast and Great Lakes.

-Days 7-10: Significantly below normal temperatures spreading across the entire Eastern region, with anomalies of 4-8 degrees below normal, particularly in the Southeast and Mid-Atlantic states.

CENTRAL: Thursday, a developing low pressure system in the Northern Plains will bring precipitation to the Upper Midwest and Great Lakes, with rain transitioning to mixed precipitation and snow in northern areas. This system will strengthen as it moves eastward, bringing rain and thunderstorms to portions of the Midwest and Ohio Valley. By the weekend, another frontal boundary will push through the region, bringing additional precipitation chances to the Central Plains and Midwest. Areas from Missouri to Iowa and the western Great Lakes could see rain changing to snow as colder air filters in behind the front. The South Central region will see increasing chances for thunderstorms by late week as moisture from the Gulf of Mexico surges northward ahead of the advancing cold front.

Temperature Anomalies:

-Days 1-3: Above normal temperatures across much of the Central Plains and Midwest, with anomalies of 3-6 degrees above normal.

-Days 4-6: Cooling trend begins with temperatures falling to near or below normal across the northern portions, while southern areas remain slightly above normal.

-Days 7-10: Significantly below normal temperatures spreading across the eastern half of the Central region, with near to slightly above normal temperatures persisting in the western portions.

WEST:  Multiple low pressure systems will affect the Pacific Northwest and Northern Rockies through the period, bringing periods of rain along the coast and mixed precipitation to snow in the higher elevations. The Southwest will remain largely dry under high pressure, though some moisture may reach Arizona and New Mexico by midweek. Today, a new system will bring additional precipitation to the Pacific Northwest and Northern Rockies. The Intermountain West will see periods of snow in the higher elevations, while the lower elevations experience rain or mixed precipitation. California will see rain chances primarily along the northern coast, with the southern portions remaining mostly dry. By the weekend, high pressure builds across much of the West, leading to drier conditions, though some precipitation may linger in the Pacific Northwest.

Temperature Anomalies:

-Days 1-3: Above normal temperatures across most of the West, particularly in the Southwest and Rockies where anomalies will be 4-8 degrees above normal.

-Days 4-6: Continued above normal temperatures across most of the region, with the warmest anomalies shifting slightly eastward into the Central Rockies.

-Days 7-10: Persistent above normal temperatures across the entire Western region, with the warmest anomalies (6-10 degrees above normal) centered over the Rockies and Intermountain West.

TROPICAL: No tropical cyclone activity is expected during the next 7 days in either the Atlantic or Eastern Pacific basins.