Excessive Heat Warning - Arizona

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
541 AM MST TUE JUL 20 2010

AZZ022-023-027-028-202300-
/O.CON.KPSR.EH.W.0005.000000T0000Z-100722T0300Z/
NORTHWEST MARICOPA COUNTY-GREATER PHOENIX AREA-
SOUTHWEST MARICOPA COUNTY-
NORTHWEST AND NORTH CENTRAL PINAL COUNTY-
INCLUDING THE CITIES OF...BUCKEYE...NEW RIVER...WICKENBURG...
MESA...PHOENIX...GILA BEND...APACHE JUNCTION...CASA GRANDE...
FLORENCE
541 AM MST TUE JUL 20 2010

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST
WEDNESDAY...

AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST
WEDNESDAY.

* AFFECTED AREA: THE SOUTH-CENTRAL DESERT AREAS OF MARICOPA COUNTY
INCLUDING THE GREATER PHOENIX AREA AND GILA BEND...AND NORTHWEST
AND NORTH-CENTRAL PINAL COUNTY INCLUDING CASA GRANDE.

* TEMPERATURE: HOT DAYTIME HIGH TEMPERATURES NEAR 110 DEGREES OVER
THE GREATER PHOENIX METROPOLITAN AREA...AND AS HIGH AS 113 DEGREES
OVER PORTIONS OF SOUTHWEST MARICOPA COUNTY. HEAT INDICES WILL RISE
TO NEAR 110 DEGREES BY MID-AFTERNOON. IN ADDITION... VERY WARM
OVERNIGHT LOW TEMPERATURES RANGING FROM THE MID 80S OVER OPEN
DESERT AND AREAS WITH VEGETATION TO NEAR 90 IN HIGHLY URBANIZED
AREAS. FORECAST HIGH TEMPERATURES FOR TODAY INCLUDE 109 DEGREES AT
PHOENIX SKY HARBOR AND 111 DEGREES AT GILA BEND.

* IMPACTS: EXCESSIVELY HOT TEMPERATURES CAN BE STRESSFUL TO ANIMALS
AND HUMANS...MAKING IT HARD FOR THE BODY TO ACCLIMATE AND REMAIN
HYDRATED. EXTREMELY WARM OVERNIGHT LOW TEMPERATURES DO NOT ALLOW
THE BODY TO COOL DOWN PROPERLY OVERNIGHT...AND CAN MAKE EXTREME
HEAT EVEN MORE DANGEROUS. THE PERSISTENCE OF THE CURRENT HEAT
EPISODE INCREASES THE HEALTH RISK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DURING PERIODS OF EXCESSIVE HEAT...INDIVIDUALS CAN SUFFER HEAT-
RELATED ILLNESS WHEN THE BODY CAN NO LONGER COOL ITSELF. IF
POSSIBLE...SPEND MORE TIME IN AIR-CONDITIONED OR WELL-VENTILATED
PLACES. COMPLETE ANY NECESSARY OUTDOOR ACTIVITY IN THE EARLY
MORNING. IF OUTSIDE FOR AN EXTENDED PERIOD IN THE AFTERNOON OR EARLY
EVENING...STAY IN THE SHADE AS MUCH AS POSSIBLE AND DRINK PLENTY OF
WATER. WEAR LIGHT-COLORED AND LOOSE-FITTING CLOTHING. IF YOU WEAR A
WIDE-BRIMMED HAT...YOUR HEAD AND BODY WILL BE MUCH COOLER.


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