[MTHOLLYSVRWX] Non-Precip Warning : PHI@ 6/26/2010 8:53:09 AM

[svrwx at wx3i.net]

WWUS71 KPHI 261252
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
852 AM EDT SAT JUN 26 2010

DEZ001-NJZ015-017>019-PAZ067>071-262100-
/O.CON.KPHI.EH.A.0002.100627T1600Z-100629T0000Z/
NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER...
NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA
852 AM EDT SAT JUN 26 2010

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY EVENING...

AN EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON
THROUGH MONDAY EVENING. 

NEAR RECORD HEAT COMBINED WITH INCREASING DEWPOINTS SHOULD RESULT
IN AT LEAST ONE DAY OF HEAT INDICES EXCEEDING 98 DEGREES.

THE WATCH IS CONTINUED SINCE THERE IS STILL A BIT OF UNCERTAINTY
REGARDING THE COMBINED RESULT OF SUNDAY AFTERNOONS TEMPERATURE
AND HUMIDITY. WHILE TEMPERATURES SHOULD REACH THE MID 90S IN THE
PHILADELPHIA AREA LATE SUNDAY AFTERNOON...THE DEWPOINTS MAY DRY
OUT JUST ENOUGH TO KEEP THE HEAT INDEX JUST BELOW THE WARNING
CRITERIA.

MONDAY IS A DIFFERENT STORY! TEMPERATURES IN PHILADELPHIA SHOULD
RISE TO THE RECORD OF 97 DEGREES OR POSSIBLY A BIT HIGHER MONDAY
AFTERNOON. THE HUMIDITY IS LIKELY TO BE HIGHER THAN IT WAS LAST
THURSDAY...RESULTING IN A HEAT INDEX OF BETWEEN 100 AND
103 DEGREES FOR A COUPLE OF HOURS DURING MONDAY AFTERNOON.

HEAT RELATED WATCHES/WARNINGS OR ADVISORIES ON MONDAY WILL
PROBABLY NEED TO BE EXPANDED INTO ALL OF DELAWARE AND MARYLANDS
EASTERN SHORE IN FUTURE FORECASTS.

EVEN MONDAY MORNING MINIMUM TEMPERATURES MAY NOT DROP MUCH BELOW
79 OR 80 IN THE URBAN CENTERS.

A COLD FRONT PASSING THROUGH THE AREA MONDAY EVENING SHOULD
TRIGGER A STRONG THUNDERSTORM IN PLACES...WITH SEVERAL DAYS OF
INCREASINGLY COOL DRY AIR ARRIVING TUESDAY INTO FRIDAY OF NEXT
WEEK.

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.

&&

$$