The Washington Post

Winter storm update: ice threat looms large west, southwest of D.C.

** For Sunday morning to Monday morning: Winter Storm Warning west of the District | Winter Weather Advisory for District and points east **

* Sunday-Monday snow and ice on track: Timeline, amounts, impacts, FAQs *

Since our comprehensive storm overview prepared earlier today, there are no major changes to the forecast. Model data continue to tell roughly the same story they’ve been telling us for the last few days:

* We start with a period of snow or snow and sleet, mid-morning to noon Sunday; accumulations roughly 0.5-2″.
* Snow and sleet transitions to sleet and freezing rain Sunday afternoon.
* Freezing rain is expected Sunday night, and a transition to plain rain will occur from the Bay westward during the course of the night, but may not make it far beyond the I-95 corridor. Along and west of a line from Manassas to Fairfax to Rockville, significant ice accumulation could occur.

But as I examined the latest model runs this evening, it struck me that west central Virginia – perhaps around the Charlottesville-Staunton-Harrisonburg area may get hit particularly hard by this. It likely receives some of the heaviest precipitation, with temperatures below freezing for a long duration. I redrew the ice accumulation map to reflect this change.


The snowfall map, below, is unchanged from earlier today.


Jason is the Washington Post’s weather editor and Capital Weather Gang's chief meteorologist. He earned a master's degree in atmospheric science, and spent 10 years as a climate change science analyst for the U.S. government. He holds the Digital Seal of Approval from the National Weather Association.
Comments
Show Comments
Most Read

At a Glance

Sun.

partlycloudyday
-- /48°

Mon.

sleet_rain
31° /44°
Drop 20%

Tue.

snow
32° /37°
Drop 70%

Wed.

partlycloudyday
29° /37°

Thu.

partlycloudyday
22° /31°

Fri.

partlycloudyday
19° /35°
National Airport
Dulles
BWI

Right Now

Washington, D.C., Snow Tracker

Current Snow Total
18.8"
Record Most Snow
(2009-10)
56.1"
Record Least Snow
(1997-98, 1972-73)
0.1"
Last Winter's Snow Total
18.3"

D.C. Area Almanac

 
National
Dulles
BWI
Avg. High
 
Avg. Low
 
Rec. High
 
Rec. Low
 
Sunrise
 
Sunset
°F
 
 
°C

To keep reading, please enter your email address.

You’ll also receive from The Washington Post:
  • A free 6-week digital subscription
  • Our daily newsletter in your inbox

Please enter a valid email address

I have read and agree to the Terms of Service and Privacy Policy.

Please indicate agreement.

Thank you.

Check your inbox. We’ve sent an email explaining how to set up an account and activate your free digital subscription.