Tonight and TomorrowLows tonight under mostly clear skies will be from the low 50s in the city to the upper 40s in the colder 'burbs. Clouds will increase tomorrow afternoon with highs around 71. There is a 60% chance of showers and possibly thunderstorms late tomorrow afternoon through the evening, with higher amounts likely in the southern portion of the region.
Deficit ReductionThe above-average precipitation so far in April has reduced the accumulated yearly deficit from around 40% at the beginning of this month to 24% as of today. The chart shows the official observations at National; weekend rainfall at Dulles was over twice as high. At Dulles, nearly a month's normal rainfall fell in one day, but the total is still well short of the April monthly record of 7.35" set in 1973.
CapitalWeather.com chart from NWS data, photo © Kevin Ambrose
Capitol ClimateThe American Meteorological Society's Environmental Science Seminar Series on Capitol Hill continues next week on May 3 with the topic, "Changes in Cold Places - A Look at the Greenland Ice Sheet, Arctic Sea Ice and the Antarctic Ice Sheet".