NATIONAL ARBORETUM 3.4 908 AM 1/27 CO-OP OBSERVERĢ NNW FROSTBURG 8.0 1030 AM 1/27 TRAINED SPOTTERġ WNW GREEN HAVEN 7.5 932 PM 1/26 TRAINED SPOTTERġ NNE CROFTON 6.5 1000 PM 1/26 TRAINED SPOTTERġ NW ANNAPOLIS 6.5 1000 PM 1/26 TRAINED SPOTTERġ NNW PAROLE 6.3 1235 AM 1/27 TRAINED SPOTTERģ SW LOTHIAN 6.0 740 AM 1/27 TRAINED SPOTTERĢ NW RIVA 4.0 915 PM 1/26 TRAINED SPOTTERġ E OELLA 12.0 803 AM 1/27 TRAINED SPOTTER SUMMARY IS ALSO AVAILABLE ON OUR HOME PAGE AT WEATHER.GOV/BALTIMORE OBSERVERS.SKYWARN SPOTTERS AND MEDIA FOR THESE REPORTS. THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PASTġ4 HOURS FOR THE STORM THAT HAS BEEN AFFECTING OUR REGION.ĪPPRECIATION IS EXTENDED TO HIGHWAY DEPARTMENTS.COOPERATIVE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC An hour later, the band of heavy snow progressed east right over Washington D.C. Located over the northwestern suburbs of Washington D.C. The yellow shading depicts a small-scale band of intense snow (2-3+ inches per hour) The pictures below capture the height of the event. The band of heavy snow (dark green and yellow colors) that impacted the Washington DC and Baltimore metro regions during the afternoon and evening rush hour eventually lifted northeast of the area by the late evening. Numerous observations of thunder and lightning were reported at the onset of the heavy precipitation. The precipitation quickly overspread the area from southwest to northeast during the early to mid afternoon. The animation below shows a base reflectivity loop of the NWS Doppler Radar (KLWX) from 12:00 pm to 10:00 pm on January 26. All three climate sites recorded precipitation (liquid equivalent) amounts in excess of one inch, breaking previous precipitation records for January 26th. The 7.6 inches of snowfall at Baltimore and 7.3 inches at Dulles both set daily climate records for snowfall on January 26th, breaking the previous record of 6.9 inches in 1966 and 6.1 inches in 1987, respectively. measured 5.0 inches of snowfall on January 26th. The Washington Post reported almost 400,000 people lost power in the D.C. The heavy, wet snow brought down many trees and powerlines. There were countless reports of commuters needing 5 to 10 hours to get home from work while others abandoned their vehicles. The heavy snowfall coinciding with the afternoon and evening rush hour commute led to hours and hours of gridlocked traffic from treacherous driving conditions. Snowfall totals from the event were highest across the northern and western suburbs of Washington D.C. Heavy snow continued through the evening hours with snowfall rates around 2 to 3 inches per hour during the height of the event. There were many reports of thunder and lightning occurring with the sleet and snow. Colder air moved into the area during this time, allowing precipitation to change quickly to sleet and then heavy snow. A strong upper low over the Tennessee Valley Wednesday morning moved through the area during the late afternoon and evening.Ĭonditions deteriorated rapidly as heavy precipitation overspread the region at the start of the late afternoon rush hour. Precipitation transitioned to light rain and drizzle across most of the area by the late morning through early afternoon as warmer air from the Atlantic wrapped into the system. The highest snowfall accumulations in the morning were across northern Maryland where temperatures were cold enough and precipitation was heavy enough to receive 2 to 5 inches of snow, causing a slippery morning commute. Ground temperatures were warm enough for nothing more than a light slushy accumulation from the Washington D.C area southward. Low pressure developing off the Mid-Atlantic coast early Wednesday brought a light wintry mix to the area. High pressure over New England supplied cold air to the Mid-Atlantic late Tuesday night into Wednesday morning. A second, stronger wave brought a burst of heavy snow to most of the region late Wednesday afternoon and evening. The storm came in two waves: The first wave triggered a period of sleet and snow across northern Maryland in the early morning. Ī potent winter storm impacted the Washington and Baltimore metropolitan areas on Wednesday, January 26th. Click on the snowfall map below to access more snowfall data from the event.
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