Excessive Heat Warning

NWS Stering has issued an Excessive Heat Warning for central, southern, and northern Maryland. Here's the info:

319 PM EDT WED JUL 20 2011

...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON TO 8 PM EDT
THURSDAY...
...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON TO 8 PM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM NOON
TO 8 PM EDT THURSDAY. AN EXCESSIVE HEAT WARNING HAS ALSO BEEN
ISSUED FROM NOON TO 8 PM EDT FRIDAY. THE EXCESSIVE HEAT WATCH IS
NO LONGER IN EFFECT.

* TEMPERATURES...HIGH TEMPERATURES IN THE UPPER 90S THURSDAY AND
  IN THE UPPER 90S OR LOW 100S ON FRIDAY. HEAT INDICES OVER 110
  AT TIMES.

* TIMING...THE WORST OF THE HEAT WILL BE DURING THE AFTERNOON AND
  EARLY EVENING HOURS THURSDAY AND FRIDAY. THE EXCESSIVE HEAT WILL
  LIKELY CARRY OVER INTO THE WEEKEND AS WELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF
DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF
HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A
DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK
PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT
OF THE SUN...AND CHECK IN ON RELATIVES AND NEIGHBORS.

TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE.
WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITIES TO EARLY
MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT
EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE
FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER.

TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY
AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT
REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS.
ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND
SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 9 1 1.