Despite some hyperventilation in the media about potential 1"/hour precipitation rates, the official Washington, DC storm total overnight and Monday morning was (much) less than 1"/day. Today's 0.29", added to the 0.10" which fell before midnight, brings the January 2010 total to only 1.24", less than 50% of the normal month-to-date amount.
Thanks to the very wet December, winter is still well above average just past the halfway point. With another chance for precipitation near the end of the week, there is still a possibility for the month to avoid being the third in the last 12 to be less than 50% of average. Here are the daily, monthly, and seasonal (since Dec. 1) totals around the region:
National 0.29"/1.24"/8.03"Further to the west, Bluefield West Virginia set a daily rainfall record (in a relatively short station history) of 0.87" yesterday (January 24). Roanoke also set a daily record of 1.34". The 1.59" at Martinsburg WV was a record for today.
Baltimore (BWI) 0.47"/1.94"/10.00"
Images (click to enlarge):
Washington DC 2009-10 monthly precipitation amounts and percentages above or below average, CapitalClimate charts from NWS data