Northeast
It’s a damp and dreary start to your workweek throughout the East with mainly rain from the Carolinas up through the I-95 corridor towards Boston but further north and you run into somewhat colder air. If you live along the MA-VT-NH border on north expect a mix of rain, sleet and perhaps wet snow but there are reports this AM of freezing rain which is creating slick conditions. Much of Vermont, New Hampshire and southernmost Maine can expect a slick mix but deeper into Maine is mainly snow. Anywhere from 4-8, locally 12″ of snow can be expect through today.
Temperatures throughout the region will be in the low 40s to low 50s with frequent showers, some heavy and thundery. Highs will be in the upper 30s for northern NY east through VT, NH and mid to low 30s for much of ME.
Tonight: Rain tapers off across the Mid-Atlantic but rain, sleet, freezing rain and snow will continue from Hartford up to Burlington and across to Bangor. Lows will be mild for all with mostly 40s, nearer 50 for Balt and Wash DC. Around freezing for much of New England, low 20s northern Maine.
Tuesday: As the storm system advances northeast into the Canadian Maritimes, so milder air lifts north and up into Maine. Wintry precip will turn to rain expect for far northern parts of the state with highs in the 40s for Portland and Bangor, 30s for Caribou where snow showers remain a possibility. Further south it a drying out period with highs in the 50s for most including the Big Cities.
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Midwest
It’s a mild start to your workweek throughout the Midwest with a drying out process following the latest storm over the weekend. The Ohio Valley will catch some lingering backside showers while further west it’s back to sunny skies and mild air once again from OKC to St Louis up to Rockford, IL. Highs range from the mid-60s for OKC, Little Rock, near 50 for KC, St Louis, 40s for Des Moines Chicago, Detroit down to Cleveland, while it’s 30s for Minn, Wisc. Slightly cooler back into ND with low to mid-20s but all these highs are running a good 5-10, locally 15 degrees above normal for Dec 17.
Tonight: Despite clear skies, it’s not all that cold for the time of year with lows only just creeping below freezing, slightly colder up across ND with teens, 20s for Minn, Wisc.
Tuesday: An even milder day from OKC to Des Moines across and into the Ohio Valley with highs near 70 in the south while it’s widespread mid, even upper 50s as far north as Iowa and NW Ill. Cooler with 20s and 30s from ND to Wis with snow possible.
South
It’s a wet, mild and potentially stormy start to your workweek across the Southeast with decent rains extending from New Orleans up to Raleigh. To the north and west of NOLA it’s drier with sunshine. Watch out into the PM hours where the unsettled weather continues where temperatures rise into the upper 60s to low 70s for many. This surface warming combined with the instability of the eastbound front could trigger locally strong, possibly severe storms. Torrential downpours, hail and gusty winds will be the main threat. Fine and dry with decent warmth for Florida, highs in the 70s, low 80s.
Tonight: As the front works east, so we see drying across AL, W GA, still wet for the Carolinas. Lows will be mild, mainly in the 40s where skies are clear, 50s under the rain and clouds.
Tuesday: It’s a much improved day Tuesday throughout the region as high pressure builds in. No cold air follows as highs rise well into the 60s, low 70s from Louisiana to the Carolinas, 80s for S FL where some showers will impact central FL as the tail of the cold front swings through.
Source: TWC
West
The next major winter storm barrels into the Washington coast today making for a rough start to the new week for much of the Pacific Northwest extending into the Northern Rockies. Expect a wind driven soaking rain for the coastal plain from Seattle down to Portland and extending south towards the Bay Area where rains will come down as heavy showers. Heavy snow will be measured in feet over the Olympics, Cascades and Sierras with this system. Expect 12-24, locally 36 to 48 inches of snow above 3,500ft. Expect gale-force winds with possible hurricane-force gusts along the immediate coast and higher elevations so please watch out if your travelling across higher routes today and tonight as blizzard conditions are likely.
Heavy snow will affect the mid-levels of all the Intermountain West extending as far east as Montana, down through western Wyoming.
Todays highs range from the 40s and 50s along the coast and low-elevations to 20s and 30s in the high-elevations.
Tonight: Heavy snows spread east across interior WA, OR down into the Sierras of CA-NV into ID, WY, UT, CO with snow levels dropping as does surface temperatures.
Tuesday: Rain showers will reach San Diego and Las Vegas while snow showers, some heavy, will affect all of the Intermountain West. Rain showers up and down the West Coast coast. Strong winds will continue. Highs range from the low 40s to low 50s for the coast and low-elevations to 10s, 20s and low 30s above 1,500ft.
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