The heat wave begins today, but highs will only reach the mid 90s as a weak frontal boundary sags through the area, also bringing the chance for showers and storms this afternoon and evening. Chances for rain do not look great however and most places will remain dry.
The front will still be close enough tomorrow to allow for an even slighter chance of storms in the afternoon. After that, the Bermuda High takes over in full force as temperatures rise into the upper 90s to around 100 with very high humidity Thursday through the weekend. The combined heat and humidity is being described as “potentially dangerous” on Friday by the National Weather Service where highs are expected to top 100 in many places and heat indices are expected to top 110.
UPDATE (12:14PM):
THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED AN EXCESSIVE HEAT WATCH…WHICH IS IN EFFECT FROM THURSDAY
AFTERNOON THROUGH THURSDAY EVENING.* TEMPERATURE…UPPER 90S TO AROUND 100 DEGREES.
* HEAT INDEX VALUES…AROUND 110 DEGREES.
PRECAUTIONARY/PREPAREDNESS ACTIONS…
AN EXCESSIVE HEAT WATCH MEANS THAT A PROLONGED PERIOD OF HOT
TEMPERATURES IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND
HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN
WHICH HEAT ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS…STAY
IN AN AIR-CONDITIONED ROOM…STAY OUT OF THE SUN…AND CHECK UP
ON RELATIVES AND NEIGHBORS.
