A Hot and Dry August for the Region
During August, temperatures were well above average while precipitation was lower than average across the region. Thanks to the National Weather Service Office in Sterling, Va. for these useful monthly weather summaries:
Reagan National Airport (DCA) Summary:
TEMPERATURES IN WASHINGTON DC AS MEASURED AT REAGAN NATIONAL AIRPORT (DCA) THIS AUGUST WERE ABOVE NORMAL [by 2.4 degrees]. THE AVERAGE MONTHLY TEMPERATURE WAS THE 14TH WARMEST AUGUST ON RECORD AT DCA DATING BACK TO 1872. THE HIGH TEMPERATURE REACHED 90F OR HIGHER 12 TIMES DURING THE MONTH...THE MOST SINCE THE 14 DAYS IN JULY 2008.
RAINFALL FOR THE MONTH WAS BELOW NORMAL [by about an inch]. ABOUT HALF OF THE MONTHLY RAINFALL WAS MEASURED ON THE 22ND AS TROPICAL MOISTURE FROM HURRICANE BILL INTERACTED WITH A FRONTAL BOUNDARY OVER THE AREA.
Keep reading for the rest of the DCA summary as well as for the Dulles summary...
NO TEMPERATURE OR PRECIPITATION RECORDS WERE BROKEN AT DCA THIS MONTH.
FOR THE 2009 METEOROLOGICAL SUMMER (DEFINED AS JUNE-AUGUST) THE AVERAGE TEMPERATURE WAS NEAR NORMAL...WITH THE TOTAL RAINFALL OF 9.39 INCHES SLIGHTLY LESS THAN AN INCH BELOW NORMAL. THE NUMBER OF DAYS HITTING 90F DEGREES OR BETTER WAS 21 FOR JUN-AUG 2009...WHICH IS ABOUT 10 LESS THAN THE AVERAGE OF 31.3 DAYS...AND WAS THE FEWEST NUMBER OF 90 DAYS SINCE THE SUMMER OF 2004...WHEN EIGHT 90F OR BETTER DAYS WERE RECORDED.
Dulles Airport (IAD) Summary:
TEMPERATURES AT DULLES (IAD) THIS AUGUST WERE ABOVE NORMAL [by almost 4 degrees]. THE AVERAGE MONTHLY TEMPERATURE WAS THE 3RD WARMEST AUGUST ON RECORD DATING TO 1962. THE HIGH TEMPERATURE REACHED 90F OR HIGHER 12 TIMES DURING THE MONTH...
RECORD HIGH TEMPERATURES WERE SET TWICE IN AUGUST...97F ON THE 10TH AND 98F ON THE 18TH. THE HIGH OF 94F ON AUGUST 21ST TIED THE PREVIOUS RECORD HIGH SET IN 2005.
RAINFALL FOR AUGUST WAS DRIER THAN NORMAL [by just over an inch]. ABOUT FOUR-FIFTHS OF THE MONTHLY RAINFALL FELL IN A 24-HOUR PERIOD FROM THE EVENING OF THE 21ST TO THE 22ND AS TROPICAL MOISTURE INTERACTED WITH A FRONTAL BOUNDARY OVER THE AREA. A DAILY RAINFALL TOTAL OF 0.94 INCHES ON AUGUST 22ND BROKE THE OLD DAILY RECORD OF 0.40 INCHES IN 1990.
FOR THE 2009 METEOROLOGICAL SUMMER (DEFINED AS JUNE-AUGUST) THE AVERAGE TEMPERATURE WAS ABOUT TWO DEGREES ABOVE NORMAL AT DULLES. RAINFALL TOTALED 11.62 INCHES FOR THIS METEOROLOGICAL SUMMER...WHICH IS NEAR NORMAL.
Posted by: Bombo47jea | September 9, 2009 1:05 PM | Report abuse
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