Dangerous travel conditions, numerous power outages, extensive tree damage in some areas. Well below normal temperatures throughout the central third of the country into the weekend. Record cold likely in South-Central U.S. through Saturday morning.
“A major winter storm will continue to bring significant impacts from the Mid-Atlantic to Northeast U.S. today,” warns the National Weather Service. “Significant ice accumulations and heavy snowfall are expected.” Severe storms will remain possible in the Southeast U.S. into Thursday afternoon. Well below normal temperatures will exist throughout the central third of the country into the weekend.”
Light snow and freezing rain to linger across the Northeast and Mid-Atlantic through Friday.
Flash flooding and severe thunderstorms remain possible this evening and overnight across portions of the Southeast.
Bitter cold temperatures continue to slowly warm throughout the Central/Southern Plains into the weekend.
The headlining weather story today is a winter storm tracking along the Southeast and Mid-Atlantic coast that is currently producing light snow across the Northeast and earlier this morning was responsible significant ice accumulations across the Mid-Atlantic. Much of the heaviest snowfall amounts have already fallen, with an additional 2 to 4 inches of snow possible through Friday evening across the Northeast and Southern New England.
Dangerous travel conditions, numerous power outages, and extensive tree damage
A little farther south, significant and disruptive ice accumulations were observed across southwest Virginia and northwestern North Carolina today. An additional tenth of an inch of freezing rain is possible this evening across similar areas. Some locations could receive a dangerous storm total half inch of ice accumulation. The result will be dangerous travel conditions, numerous power outages, and extensive tree damage. Light freezing rain/drizzle could also stretch as far as north as the I-95 corridor from the Washington D.C. to Philadelphia metro areas this evening, which could prompt slippery travel on Friday morning. Light snow will finally dissipate across the Northeast by late in the day on Friday.
Meanwhile, a slow moving cold front associated with the ongoing winter storm is producing scattered heavy rain across the Southeast from northern Florida to the eastern Carolinas. Instances of flash flooding will be possible into the overnight hours. Much of the region has experienced an abundance of rainfall over the last few weeks, therefore any additional heavy rain could struggle to quickly drain. WPC has issued a Slight Risk of Excessive Rainfall across the region, with Flash Flood Watches also currently in effect. Across northern Florida and southern Georgia, isolated thunderstorms could turn severe. In fact, the Storm Prediction Center has issued a Slight Risk of Severe Thunderstorms for this area through early Friday morning. Thunderstorms will have the capability to produce damaging winds and isolated tornadoes.
Record cold likely in South-Central U.S. through Saturday morning
The prolonged stretch of frigid temperatures courtesy of a strong Arctic high pressure system continues to gradually loosen its icy grip over the Heartland. That said, abnormally cold temperatures will hang around through the weekend. Record cold daily maximum and minimum temperatures are likely in the South-Central U.S. through Saturday morning. The Plains and Mississippi Valley can expect daily temperature anomalies ranging between 20 and 30 degrees below normal.
The Ohio Valley will also remain in a deep freeze through Saturday with high temperatures remaining below the freezing mark.
1 to 2 feet of snow for Cascade Range, 6 to 12 inches in the Sawtooth, Bitterroots, and Tetons
Across the Northwest, a pacific storm system will make landfall this evening and deliver more coastal/valley rain and mountain snow to the region. A steady onshore flow continues to favor additional upsloping winds along the Cascades while Pacific moisture advances deeper into the Intermountain West. Through Friday night, 1 to 2 feet of snow is forecast to pile up along the Cascade Range with 6 to 12 inches of snow possible in the Sawtooth, Bitterroots, and Teton mountain ranges. Those along the coastal range of northern California and western Oregon/Washington may receive 1 to 2 inches of rain through Friday night.