Thursday, April 9, 2009

Mid Atlantic Drought Update: Week Ending April 7

Following the near-record dry February-March, showers in the first week of April have kept the month to date above average for the Washington, DC region. Including 0.77" falling in 24 hours on the 2nd-3rd, Washington National now has a total of 1.1" for the month. In the longer run, however, the region remains in Moderate Drought conditions. The state of Virginia has improved from 27% Moderate to 17% in the current week, but Maryland has worsened from 52% to 79%.

The year-to-date precipitation deficits for major reporting locations in the region have all decreased compared to 2 weeks ago:

Washington National 4.09"
Washington Dulles 4.03"
BWI 4.41"

The dry conditions extend westward into West Virginia, where Martinsburg is 5.12" low for the year to date.

Images (click to enlarge): 30-day precipitation history for Washington DC from Climate Prediction Center/NCEP/NOAA; Maryland and Virginia drought conditions from U.S. Drought Monitor, USDA and NOAA

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