More Heat!

Thursday’s official high temperature in Baltimore recorded at BWI-Marshall Airport was 100°, short of the record 104° set in 1930. The high temperature at the Maryland Science Center at the Inner Harbor was 103°.

100° or higher temperatures are expected again on Friday and possibly Saturday.

The high temperature forecast map for Friday shows the concentration of 100°+ temperatures will be concentrated along the East Coast, central and southern Plains and the desert Southwest. This is an unusually widespread outbreak of extreme temperatures.

Along the eastern seaboard, the high humidity levels make conditions worse.

When humidity levels are taken into account, it will “feel like” temperatures will be in the range of 110° to 120° during the afternoon hours. An Excessive Heat Warning is in Effect. Check wbaltv.com for tips for staying safe during this heat wave.

The following are some interesting statistics compiled by the National Weather Service.

Update Friday evening at 7:48pm edt.

Additional information from the Sterling, VA office of the National Weather Service on Friday high temperatures.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
646 PM EDT FRI JULY 22 2011

...MAXIMUM TEMPERATURE AND HEAT INDEX...

THE FOLLOWING LIST SHOWS PRELIMINARY MAXIMUM TEMPERATURES AND HEAT
INDICES SO FAR FOR SEVERAL LOCATIONS ON FRIDAY JULY 22 2011 UP
THROUGH 6 PM EDT...

                                 MAX        MAX
CITY                            TEMP F  HEAT INDEX F
BALTIMORE MD INNER HARBOR...DMH  108        124
WASHINGTON DC REAGAN NATL...DCA  102        121
ANNAPOLIS MD................NAK  101        119
BALTIMORE MD BWI AIRPORT....BWI  106R       118
DULLES VA AIRPORT...........IAD  105R       117
CHARLOTTESVILLE VA..........CHO  102        112
MARTINSBURG WV..............MRB  103        111
HAGERSTOWN MD...............HGR  100        110

BALTIMORE MD-BWI BROKE A DAILY RECORD HIGH FOR THE DATE.

DULLES AIRPORT VA-BROKE ITS ALL TIME HIGH TEMPERATURE RECORD...ITS
TEMPERATURE RECORDS GO BACK TO NOV 1962.

NOTE...THE NWS DOES NOT KEEP HEAT INDEX RECORDS.

I would add to this that the Friday morning low temperature at
BWI-Marshall Airport was 81 degrees, tying the the
"record high minimum" temperature for the date.

John Collins

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