Damaging Wind in Pennsylvania, July 25, 2001

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 PM EDT WED JUL 25 2001

HEAT WAVE/SOUPY AIRMASS WANING AS COLD FRONT APPROACHES FROM THE
NORTHWEST. QUITE UNSTABLE SOUTH OF THE FRONT THIS AFTERNOON WITH
LI/S APPROACHING -6 C AND CAPES 2500 J/KG. PRECIPITABLE H20 RUNNING
HIGH AROUND 2.00 INCHES. THE MORNING SOUNDING OUT OF KPIT VERIFIES
THIS. HEAT INDICES RUNNING AROUND 100 DEGS ATTM AND WILL ALLOW HEAT
WARNING TO EXPIRE AT 800 PM THIS EVENING.

WEAK WAVES WITH MINOR SURFACE REFLECTION TO MOVE ALONG FRONT THE
NEXT 24 HOURS. ALTHOUGH SURFACE REFLECTIONS ARE MINOR...LOW LEVEL
CONVERGENCE WILL INCREASE. THIS COMBINED WITH THE HIGH PW/S WILL
HELP INDUCE PERIODS OF INTENSE RAINFALL FOR THE CWA STARTING TONIGHT
AND CONTINUING TOMORROW.

SLOW MOVING COLD FRONT SAGS SOUTH OF CWA BEHIND SECOND WEAK WAVE
THURSDAY NIGHT. WILL END PRECIP ACROSS THE NORTH AT THIS TIME...BUT
CONTINUE ACROSS THE SOUTHERN CWA INTO EARLY 4TH PERIOD.

AFTER FROPA...GRIDDED H8 TEMPS DROP A GOOD 5 TO 9 DEGS C WITH
NORTHERN AREAS BOTTOMING OUT NEAR 9 DEGS C. THIS WILL HELP PUSH
TEMPERATURES BACK INTO THE 70S AND LOWER 80S THURSDAY AND FRIDAY.

THE EXTENDED PORTION WILL INDICATE A CHANGE FOR SATURDAY WITH
SHOWERS AND THUNDERSTORMS POSSIBLE ACROSS THE SOUTH AS ABOVE
MENTIONED COLD FRONT SITS JUST TO OUR SOUTH. WITH RETURN FLOW
AFFECTING THE CWA SUNDAY AND MONDAY WILL KEEP POPS GOING. REST OF
EXTENDED WILL BE DRY.

.PHI...
DE...HEAT WARNING UNTIL 800 PM FOR ZONE DEZ001.
  ...SMALL CRAFT ADVISORY COAST.
MD...NONE.
NJ...HEAT WARNING UNTIL 800 PM FOR ZONES NJZ015...NJZ017>019.
  ...SMALL CRAFT ADVISORY COAST.
PA...HEAT WARNING UNTIL 800 PM FOR ZONES PAZ067>071.

KRUZDLO