An area of low pressure passed by to the west with another area of low pressure developing near the Chesapeake Bay. This resulted in southeasterly winds to overrun colder air near the surface and a prolonged wintry mix/freezing rain event across the Allegheny and Potomac Highlands where temperatures were just below freezing.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
An area of low pressure passed by to the west with another area of low pressure developing near the Chesapeake Bay. This resulted in southeasterly winds to overrun colder air near the surface and a prolonged wintry mix/freezing rain event across the Allegheny and Potomac Highlands where temperatures were just below freezing. Ice accumulations totaled one quarter to three quarters of an inch. Sleet accumulations totaled upwards of 2 as well. This led to numerous accidents, downed trees and power lines which resulted in isolated power outages.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Dec 14, 2:55 PM EST, 4 hours 5 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
5 ice storm. Local standard time, as filed.
Garrett EM reported significant ice accretion resulting in numerous accidents, downed trees and power lines, and power outages throughout the county.
MD SHA reported significant ice accretion resulting in numerous accidents, downed trees and power lines, and isolated power outages throughout the county.
MD SHA reported significant ice accretion resulting in numerous accidents, downed trees and power lines, and isolated power outages throughout the county.
Spotters reported significant ice accretion of resulting in numerous accidents, downed trees and power lines, and isolated power outages throughout the county.
Spotters reported significant ice accretion resulting in numerous accidents, downed trees and power lines, and isolated power outages throughout the northern portion of the county.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2022Every state in 2022This day in weather historyWarnings in Maryland, December 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1060765, 1060766, 1060767, 1060768, 1060769.