Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
327 FXUS01 KWBC 022009 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 PM EST Tue Dec 02 2025 Valid 00Z Wed Dec 03 2025 - 00Z Fri Dec 05 2025 ...A rapidly intensifying coastal storm will bring additional moderate to heavy snow across interior New England through tonight... ...A surge of arctic air is forecast to challenge low temperature records over the Midwest Thursday... ...Snow showers linger across the Great Lakes and Great Basin/Rockies as moderate to heavy rain emerges along the western to central Gulf Coast... The first winter-storm of the season is well under way across interior New England this afternoon with widespread moderate and heavy snow across the region. Meanwhile, a low pressure system is rapidly intensifying just off the Mid-Atlantic. This coastal storm will lift additional moisture coming from the Atlantic along a sharp coastal front and then dump the moisture as snow over interior New England through tonight before ending Wednesday morning. Snowfall totals of generally 5 to 10 inches are expected from central New England to Downeast Maine with isolated 12 inches possible. Blustery northwesterly winds early Wednesday morning across the Northeast will gradually subside during the day as the coastal storm will exit in a hurry. Clearing skies and chilly weather will prevail from the South to the East Coast behind the storm on Wednesday, and will continue into Thursday for the East Coast under the influence of a high pressure system. To the west, a pair of frontal systems coupled with digging upper-level troughs are expected to bring a round of scattered wintry weather to portions of the central and western U.S. First, an upper-wave dropping southward will bring moderate to locally heavy mountain snow through the Great Basin/Rockies over the next couple of days. Lower elevations will also see some snow showers, though accumulations will generally remain limited. However, one exception will be along the Colorado Front Range where areas of the High Plains along and east of the foothills are forecast to see some moderate accumulations. To the north, a clipper-like system will bring light snow showers to the northern Plains Tuesday. As the system reaches the Great Lakes on Wednesday, lake-enhanced snow showers will bring more moderate accumulations to favorable downwind locations. Behind the clipper system, a strong arctic high pressure system will bring a surge of arctic air into the northern and central U.S. through Thursday. The arctic air will be cold enough to challenge some daily low temperature records (both the record low and record cold maximum temperatures) over the Midwest on Thursday. As the arctic high pressure system invades the northern and central U.S., the aforementioned upper-wave will emerge into the southern Plains on Thursday and will begin to interact with a front near the Gulf Coast. This pattern will increase the chance of moderate to heavy rain on Thursday along the western to central Gulf Coast, with light rain farther inland from the Arklatex to the Deep South. Over the Pacific Northwest, moisture from the next Pacific system is forecast to reach the Pacific Northwest during the day on Thursday with rain for the lower elevations while wet snow is forecast for the northern Cascades. Much of the eastern and central U.S. will continue to see well below average, chilly temperatures in this winter-like pattern in which broad, stagnant upper-toughing are in place with repeated cold frontal passages. Forecast highs generally range from the 20s and 30s for the Midwest and New England, the 30s and 40s for the Mid-Atlantic, and the 40s and 50s for the Southeast. Areas along the southeast Atlantic coast Tuesday and the central/western Gulf Coast Wednesday will see much warmer highs into the 60s as the position of the lingering frontal boundary fluctuates. The High Plains will also see a warm up today as highs rise into the 30s/40s north and 50s/60s south with downsloping winds in place. Another cold front will bring a return of frigid temperatures Wednesday as highs plummet into the single digits and teens in the northern Plains and 20s and 30s into the central High Plains. This cold front will also bring the potential for widespread near record-tying/breaking lows Thursday morning across portions of the Midwest, with temperatures as low as the negative teens. The West will generally remain at or above average, with highs in the 40s for the interior, 50s and 60s along the West Coast, and 60s and 70s in the Desert Southwest. A cold front will bring some cooler temperatures in the 30s to portions of the interior on Wednesday. Kong/Putnam Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$