Alert archive / New Jersey / Excessive Heat Watches in 2008

Excessive Heat Watch 2, NWS Philadelphia/Mount Holly

July 15, 20084 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this excessive heat watch at Jul 15, 2008, 3:41 PM EDT for 4 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware. It took effect at Jul 19, 2008, 8:00 PM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
Jul 15, 2008, 3:41 PM EDT (19:41 UTC)
In effect from
Jul 19, 2008, 8:00 PM EDT
Expired
Jul 19, 2008, 3:50 PM EDT
In force
Issued by
NWS Philadelphia/Mount Holly

Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 19:45 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.7 hours before the alert went out and 98 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Phillips Aaf/Abe, MD at 12:00Z on 2008-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2008-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
19 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1590 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS71 KPHI 151941
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
341 PM EDT TUE JUL 15 2008

...HIGH PRESSURE WILL REMAIN OVER THE REGION WITH EACH DAY
BEING HOT AND BECOMING MORE HUMID...

DEZ001-NJZ015-017>019-PAZ067>071-160345-
/O.NEW.KPHI.EH.A.0002.080717T1600Z-080719T1800Z/
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
341 PM EDT TUE JUL 15 2008

...EXCESSIVE HEAT WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
SATURDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN EXCESSIVE
HEAT WATCH...WHICH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH
SATURDAY AFTERNOON.

THE THIRD HEAT-WAVE OF THE SEASON WILL BEGIN ON WEDNESDAY ACROSS
THE MAJOR METROPOLITAN AREAS AND CONTINUE INTO THE WEEKEND. THE
MOST OPPRESSIVE PART OF THE HEAT WAVE APPEARS TO BE LATE FRIDAY
INTO THE WEEKEND WITH THE TEMPERATURES IN THE MID 90S AND 
INCREASING HUMIDITY. ALTHOUGH WE DO NOT ANTICIPATE BREAKING ANY
HIGH TEMPERATURE RECORDS, THERE COULD BE FIVE CONSECUTIVE DAYS OR
90 OR ABOVE.

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.

$$

EBERWINE
9 follow-up statements
000 
WWUS71 KPHI 152333
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
733 PM EDT TUE JUL 15 2008

...HIGH PRESSURE WILL REMAIN OVER THE REGION WITH EACH DAY BEING
HOT AND BECOMING MORE HUMID...

DEZ001-NJZ015-017>019-PAZ067>071-160930-
/O.CON.KPHI.EH.A.0002.080717T1600Z-080719T1800Z/
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
733 PM EDT TUE JUL 15 2008

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH SATURDAY AFTERNOON...

AN EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH SATURDAY AFTERNOON. 

THE THIRD HEAT-WAVE OF THE SEASON WILL BEGIN ON WEDNESDAY ACROSS
THE MAJOR METROPOLITAN AREAS AND CONTINUE INTO THE WEEKEND. THE
MOST OPPRESSIVE PART OF THE HEAT WAVE APPEARS TO BE LATE FRIDAY
INTO THE WEEKEND WITH THE TEMPERATURES IN THE MID 90S AND
INCREASING HUMIDITY. ALTHOUGH WE DO NOT ANTICIPATE BREAKING ANY
HIGH TEMPERATURE RECORDS... THERE COULD BE FIVE CONSECUTIVE DAYS
OR 90 OR ABOVE.

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.

$$
000 
WWUS71 KPHI 160745
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
345 AM EDT WED JUL 16 2008

...HOTTER AND MORE HUMID CONDITIONS WILL OCCUR THURSDAY AND INTO
THE WEEKEND...

DEZ001-NJZ015-017>019-PAZ067>071-162100-
/O.EXT.KPHI.EH.A.0002.080717T1600Z-080720T0000Z/
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
345 AM EDT WED JUL 16 2008

...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM THURSDAY AFTERNOON
THROUGH SATURDAY EVENING...

THE EXCESSIVE HEAT WATCH IS NOW IN EFFECT FROM THURSDAY AFTERNOON
THROUGH SATURDAY EVENING. 

THE THIRD HEAT WAVE OF THE SEASON OVER THE PHILADELPHIA AND
WILMINGTON URBAN AREAS WILL BEGIN TODAY. TEMPERATURES WILL TOP
OUT NEAR 90 OR IN THE LOWER 90S TODAY, WITH MODERATE HUMIDITY.
HOWEVER, TEMPERATURES AND HUMIDITY WILL BUILD THURSDAY AND LIKELY
CONTINUE INTO THE WEEKEND. THE MOST OPPRESSIVE PART OF THE HEAT
WAVE APPEARS TO BE FRIDAY AND SATURDAY, WITH HIGH TEMPERATURES IN
THE MID 90S COINCIDING WITH ELEVATED HUMIDITY. THERE COULD BE
FIVE CONSECUTIVE DAYS OR 90 DEGREES OR ABOVE. IN ADDITION, LOW
TEMPERATURES AT NIGHT MAY NOT COOL BELOW THE LOWER AND MID 70S.

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 ENVIRONMENT AND OUT OF THE SUN...CHECK UP
ON RELATIVES AND NEIGHBORS...AND INSURE PETS HAVE SHADE AND WATER.

PLEASE MONITOR NOAA WEATHER RADIO ALL HAZARDS...YOUR LOCAL
COMMERCIAL TELEVISION OR RADIO OUTLET...OR THE INTERNET AT
WEATHER.GOV/PHI FOR THE LATEST WEATHER INFORMATION, ESPECIALLY IF
THE EXCESSIVE HEAT WATCH IS UPGRADED TO AN EXCESSIVE HEAT WARNING
OR HEAT ADVISORY.

$$
000 
WWUS71 KPHI 162004
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
404 PM EDT WED JUL 16 2008

...HOTTER AND MORE HUMID CONDITIONS WILL OCCUR THURSDAY AND
CONTINUE FOR THE WEEKEND, WITH FRIDAY LOOKING TO BE THE HOTTEST
DAY...

DEZ001-NJZ015-017>019-PAZ067>071-171000-
/O.EXT.KPHI.EH.A.0002.080718T1600Z-080720T1900Z/
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
404 PM EDT WED JUL 16 2008

...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SUNDAY AFTERNOON...

THE EXCESSIVE HEAT WATCH IS NOW IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SUNDAY AFTERNOON. 

AS HOT AIR CONTINUES TO WORK INTO THE REGION, AFTERNOON
TEMPERATURES ARE EXPECTED TO TOP OUT IN THE MID 90S THURSDAY AND
FRIDAY. EVEN THOUGH IT WILL BE HOT ON THURSDAY, THE DEW POINTS ARE
EXPECTED TO BE LOW ENOUGH TO KEEP THE HEAT INDICES CLOSE TO THE
ACTUAL AIR TEMPERATURES. IN THE HIGHLY URBANIZED AREAS, IT IS
STILL ADVISED TO TAKE SOME EXTRA CAUTION ON THURSDAY AS CONDITIONS
WILL STILL BE HOT FROM AROUND MIDDAY INTO THE EARLY EVENING HOURS.

INCREASING HUMIDITY IS EXPECTED TO OCCUR ON FRIDAY. FRIDAY AFTERNOON
LOOKS TO BE THE HOTTEST DAY OF THIS HEAT WAVE, WITH HEAT INDICES
TOPPING OUT ABOUT 100 DEGREES IN THE HIGHLY URBANIZED AREAS. THE
HEAT AND HUMIDITY WILL CONTINUE OVER THE WEEKEND AS WELL, ALTHOUGH
THE AIR TEMPERATURES COULD DROP A LITTLE BIT EACH DAY. EITHER WAY,
THE COMBINATION OF THE HEAT, HUMIDITY AND IT BEING A SEVERAL DAY
EVENT, THE EXCESSIVE HEAT WATCH HAS BEEN EXTENDED THROUGH SUNDAY
AFTERNOON. IN ADDITION, LOW TEMPERATURES AT NIGHT MAY NOT COOL
BELOW THE LOWER AND MID 70S, ESPECIALLY IN THE MORE URBANIZED
LOCATIONS.

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 ENVIRONMENT AND OUT OF THE SUNSHINE, CHECK
UP ON RELATIVES AND NEIGHBORS, AND BE SURE PETS HAVE SHADE AND
WATER.

STAYED TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR YOUR LOCAL MEDIA
OUTLETS FOR THE LATEST WEATHER INFORMATION.

$$

GORSE
000 
WWUS71 KPHI 170730
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 AM EDT THU JUL 17 2008

...HOT CONDITIONS TODAY WILL CONTINUE BUT BECOME MORE HUMID
FRIDAY AND OVER THE WEEKEND...WITH FRIDAY AND SATURDAY POSSIBLY
THE MOST UNCOMFORTABLE DAYS...

DEZ001-NJZ015-017>019-PAZ067>071-172100-
/O.CON.KPHI.EH.A.0002.080718T1600Z-080720T1900Z/
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
330 AM EDT THU JUL 17 2008

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SUNDAY AFTERNOON...

AN EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH SUNDAY AFTERNOON.
 
AS HOT AIR CONTINUES TO BUILD OVER THE REGION, AFTERNOON
TEMPERATURES ARE EXPECTED TO TOP OUT IN THE LOWER AND MID 90S
TODAY, AGAIN FRIDAY, AND PROBABLY SATURDAY AS WELL. EVEN THOUGH IT
WILL BE HOT TODAY, THE HUMIDITY IS EXPECTED TO BE MODERATE,
KEEPING THE HEAT INDICES CLOSE TO THE ACTUAL AIR TEMPERATURES.
HOWEVER, ESPECIALLY FOR THOSE IN THE HIGHLY URBANIZED AREAS, IT IS
ADVISED TO USE CAUTION TODAY, AS CONDITIONS WILL STILL BE HOT FROM
LATE MORNING INTO THE EARLY EVENING HOURS.

INCREASED HUMIDITY IS EXPECTED TO OCCUR FRIDAY AND SATURDAY. BOTH
AFTERNOONS ARE FORECAST TO BE THE HOTTEST DAYS OF THIS HEAT WAVE
AND FEATURE HIGHS IN THE MID 90S, AND HEAT INDICES ARE EXPECTED
TO TOP OUT CLOSE TO 100 DEGREES IN THE HIGHLY URBANIZED AREAS.
THE HEAT AND HUMIDITY WILL CONTINUE SUNDAY AND PERHAPS INTO EARLY
NEXT WEEK AS WELL, ALTHOUGH THE AIR TEMPERATURES COULD DROP A
LITTLE BIT EACH DAY. EITHER WAY, THE COMBINATION OF THE HEAT,
HUMIDITY, AND THEIR CUMULATIVE EFFECTS OVER SEVERAL DAYS HAS
RESULTED IN THE EXCESSIVE HEAT WATCH CONTINUING THROUGH SUNDAY
AFTERNOON. IN ADDITION, LOW TEMPERATURES AT NIGHT MAY NOT COOL
BELOW THE LOWER AND MID 70S, ESPECIALLY IN THE URBANIZED SPOTS.

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 ENVIRONMENT AND OUT OF THE SUNSHINE, CHECK
UP ON RELATIVES AND NEIGHBORS, AND BE SURE PETS HAVE SHADE AND
WATER.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS, OR YOUR LOCAL MEDIA 
OUTLET, FOR THE LATEST WEATHER INFORMATION.

$$
000 
WWUS71 KPHI 172009
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
409 PM EDT THU JUL 17 2008

DEZ001-NJZ015-017>019-PAZ067>071-181000-
/O.NEW.KPHI.EH.W.0002.080718T1600Z-080720T0000Z/
/O.EXT.KPHI.EH.A.0002.080720T0000Z-080720T2300Z/
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
409 PM EDT THU JUL 17 2008

...EXCESSIVE HEAT WARNING IN EFFECT FROM 12 PM FRIDAY TO 8 PM EDT
SATURDAY...
...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN
EXCESSIVE HEAT WARNING, WHICH IS IN EFFECT FROM 12 PM FRIDAY TO 8
PM EDT SATURDAY. THE EXCESSIVE HEAT WATCH IS NOW IN EFFECT FROM
SATURDAY EVENING THROUGH SUNDAY EVENING.

ALTHOUGH TEMPERATURES ARE IN THE LOWER TO MID 90S THIS AFTERNOON,
THE WEST WINDS WE ARE EXPERIENCING ARE KEEPING HUMIDITY LEVELS
LOW. THIS IN TURN HAS KEPT THE HEAT INDICES AT OR EVEN BELOW
ACTUAL AIR TEMPERATURES. 

AS WINDS BECOME MORE SOUTHERLY TONIGHT AND THEN PERSIST THROUGH
THE WEEKEND, AN INCREASE IN BOTH TEMPERATURE AND HUMIDITY IS
EXPECTED. BOTH TOMORROW AND SATURDAY ARE FORECAST TO BE THE
HOTTEST DAYS OF THIS HEAT WAVE FEATURING HIGHS IN THE MID 90S AND
HEAT INDICES AROUND 100 DEGREES. THE HEAT AND HUMIDITY WILL
CONTINUE ON SUNDAY AND PERHAPS INTO EARLY NEXT WEEK AS WELL, ALTHOUGH
THE AIR TEMPERATURES COULD DROP A LITTLE BIT EACH DAY.

EITHER WAY, THE COMBINATION OF THE HEAT, HUMIDITY AND THEIR
CUMULATIVE EFFECTS OVER SEVERAL DAYS HAS RESULTED IN THE EXCESSIVE
HEAT WARNING THROUGH SATURDAY EVENING AND THE CONTINUATION OF THE
WATCH THROUGH SUNDAY EVENING. IN ADDITION TO THE HEAT OF THE DAY,
LOW TEMPERATURES AT NIGHT MAY NOT COOL BELOW THE LOWER AND MID
70S, ESPECIALLY IN THE HIGHLY URBANIZED AREAS.

AN EXCESSIVE HEAT WARNING 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 ENVIRONMENT AND OUT OF THE SUNSHINE AND CHECK
UP ON RELATIVES AND NEIGHBORS. THE VERY YOUNG, THE ELDERLY, AND
THE INFIRM ARE MOST SUSCEPTIBLE TO HEAT-RELATED ILLNESSES. LASTLY,
MAKE SURE PETS HAVE SHADE AND WATER AS THEY TOO ARE AFFECTED BY
THE HEAT.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR YOUR LOCAL MEDIA
OUTLET FOR THE LATEST WEATHER INFORMATION.

$$

KRUZDLO
000 
WWUS71 KPHI 180745
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
345 AM EDT FRI JUL 18 2008

DEZ001-NJZ015-017>019-PAZ067>071-182100-
/O.CON.KPHI.EH.W.0002.080718T1600Z-080720T0000Z/
/O.CON.KPHI.EH.A.0002.080720T0000Z-080720T2300Z/
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
345 AM EDT FRI JUL 18 2008

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO
8 PM EDT SATURDAY...
...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO
8 PM EDT SATURDAY. AN EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM
SATURDAY EVENING THROUGH SUNDAY EVENING. 

HIGH TEMPERATURES WERE CLOSE TO 90 TUESDAY. TEMPERATURES TOPPED
OUT IN THE LOWER 90S WEDNESDAY AND IN THE LOWER AND MID 90S
THURSDAY, ALTHOUGH THE HUMIDITY WAS ONLY MODERATE EACH DAY.

WITH SOUTHWEST WINDS BRINGING IN MORE HUMIDITY TODAY, AND
TEMPERATURES CLIMBING TO THE MID 90S IN THE URBAN AREAS,
CONDITIONS WILL BE EVEN MORE UNCOMFORTABLE TODAY AND SATURDAY. 
SOME SPOTS MAY REACH THE UPPER 90S THIS AFTERNOON, BUT THAT IS
EVEN MORE LIKELY SATURDAY.

TODAY AND SATURDAY ARE FORECAST TO BE THE HOTTEST DAYS OF THIS
HEAT WAVE. HEAT INDICES ARE EXPECTED TO REACH NEAR 100 DEGREES
BOTH DAYS. THE HEAT AND HUMIDITY WILL CONTINUE TO SOME DEGREE
SUNDAY, AND PERHAPS INTO EARLY NEXT WEEK AS WELL, ALTHOUGH
TEMPERATURES MAY DROP A LITTLE BIT WITH THE PROXIMITY OF A FRONT
WHICH COULD PRODUCE MORE CLOUDS AND SCATTERED THUNDERSTORMS.

THE COMBINATION OF THE HEAT AND HUMIDITY AND THEIR CUMULATIVE
EFFECTS OVER SEVERAL DAYS HAS RESULTED IN THE EXCESSIVE HEAT
WARNING THROUGH SATURDAY EVENING, AND THE CONTINUATION OF THE
EXCESSIVE HEAT WATCH THROUGH SUNDAY EVENING AS LESS CERTAINTY
EXISTS ABOUT TEMPERATURES SUNDAY. IN ADDITION TO THE HEAT OF THE
DAY, LOW TEMPERATURES AT NIGHT ARE NOT EXPECTED TO DROP BELOW THE
LOWER AND MID 70S IN THE URBAN AREAS, WHICH WORSENS THE EFFECTS OF
THE PERSISTENT HEAT AND HUMIDITY.

AN EXCESSIVE HEAT WARNING 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 ENVIRONMENT AND OUT OF THE SUNSHINE, AND
CHECK UP ON RELATIVES AND NEIGHBORS. THE VERY YOUNG...THE
ELDERLY...AND THE INFIRM ARE MOST SUSCEPTIBLE TO HEAT-RELATED
ILLNESSES. MAKE SURE PETS AND LIVESTOCK HAVE PLENTY OF SHADE AND
WATER. FOR THOSE RESIDENTS OF URBAN AREAS WHERE TEMPERATURES ARE
HIGHEST, MAKE SURE YOUR DWELLING IS WELL VENTILATED. AND NEVER
LEAVE ANY PERSON OR ANIMAL IN A CLOSED VEHICLE FOR ANY LENGTH OF
TIME.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR YOUR LOCAL MEDIA
OUTLET FOR THE LATEST WEATHER INFORMATION.

$$
000 
WWUS71 KPHI 181930
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 PM EDT FRI JUL 18 2008

DEZ001-NJZ015-017>019-PAZ067>071-191000-
/O.CON.KPHI.EH.W.0002.000000T0000Z-080720T0000Z/
/O.CON.KPHI.EH.A.0002.080720T0000Z-080720T2300Z/
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
330 PM EDT FRI JUL 18 2008

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT
SATURDAY...
...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM SATURDAY EVENING
THROUGH SUNDAY EVENING...

THE NATIONAL WEATHER SERVICE HAS CONTINUED THE EXCESSIVE HEAT
WARNING UNTIL 800 PM ON SATURDAY. ALSO, AN EXCESSIVE HEAT WATCH
REMAINS IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY EVENING.

HIGH TEMPERATURES WERE CLOSE TO 90 DEGREES ON TUESDAY.
TEMPERATURES REACHED THE LOWER 90S ON WEDNESDAY, AND THE LOWER AND
MIDDLE 90S ON THURSDAY. HOWEVER, THE HUMIDITY LEVELS WERE
RELATIVELY LOW EACH DAY.

A SOUTHWEST WIND BROUGHT AN INCREASE IN HUMIDITY TODAY AS
TEMPERATURES CLIMBED INTO THE MIDDLE 90S THROUGHOUT MUCH OF THE
PHILADELPHIA METROPOLITAN AREA. HEAT INDEX VALUES REACHED 100 AT A
NUMBER OF LOCATIONS. THE SAME IS EXPECTED FOR SATURDAY AFTERNOON.
MEANWHILE, LITTLE RELIEF IS ANTICIPATED FOR TONIGHT, AS
TEMPERATURES DROP ONLY INTO THE 70S. AS A RESULT, THE NATIONAL
WEATHER SERVICE HAS CONTINUED THE EXCESSIVE HEAT WARNING UNTIL
800 PM ON SATURDAY.

THE EXCESSIVE HEAT MAY CONTINUE INTO SUNDAY. HOWEVER, AN INCREASE
IN CLOUD COVER COULD KEEP TEMPERATURES FROM REACHING THE MIDDLE
90S AGAIN, AND HEAT INDEX VALUES MAY REMAIN BELOW 100. DUE TO THE
UNCERTAINTY SURROUNDING SUNDAYS FORECAST TEMPERATURES, THE
NATIONAL WEATHER SERVICE HAS MAINTAINED AN EXCESSIVE HEAT WATCH
FOR SATURDAY NIGHT AND SUNDAY.

AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT
WEATHER IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH
HUMIDITY WILL CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESS
IS POSSIBLE. DRINK PLENTY OF FLUIDS, STAY IN AN AIR CONDITIONED
ENVIRONMENT AND OUT OF THE SUNSHINE, AND CHECK ON ELDERLY RELATIVES
AND NEIGHBORS. THE VERY YOUNG, THE ELDERLY, AND THE INFIRM ARE
MOST SUSCEPTIBLE TO HEAT RELATED ILLNESS. MAKE SURE PETS AND
LIVESTOCK HAVE PLENTY OF SHADE AND WATER. FOR THOSE RESIDENTS IN
URBAN AREAS WHERE TEMPERATURES ARE THE HIGHEST, MAKE SURE YOUR
DWELLING IS WELL VENTILATED. DURING THE HOT WEATHER, NEVER LEAVE A
PERSON OR ANIMAL IN A CLOSED VEHICLE FOR ANY LENGTH OF TIME.

$$

IOVINO
000 
WWUS71 KPHI 190828
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
428 AM EDT SAT JUL 19 2008

DEZ001-NJZ015-017>019-PAZ067>071-192100-
/O.EXT.KPHI.EH.A.0002.080720T0000Z-080721T2300Z/
/O.CON.KPHI.EH.W.0002.000000T0000Z-080720T0000Z/
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
428 AM EDT SAT JUL 19 2008

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM THIS EVENING THROUGH
MONDAY EVENING...

THE EXCESSIVE HEAT WATCH IS NOW IN EFFECT FROM THIS EVENING
THROUGH MONDAY EVENING. AN EXCESSIVE HEAT WARNING REMAINS IN
EFFECT UNTIL 8 PM EDT THIS EVENING. 

THE STRING OF 90-DEGREE-PLUS DAYS WILL CONTINUE THROUGH
TODAY...AND MAY WELL CONTINUE THROUGH MONDAY. YESTERDAY WAS THE
HOTTEST DAY SO FAR WITH MAXIMUM TEMPERATURES IN THE MIDDLE 90S...
AND TODAY WILL BE JUST AS HOT. DEW POINTS ARE EXPECTED TO REMAIN
IN THE 60S...WHICH WILL KEEP RELATIVE HUMIDITY LEVELS FROM BEING
TOO HIGH...BUT HEAT INDICES IN THE URBANIZED AREAS OF THE DELAWARE
VALLEY ARE EXPECTED TO CLIMB TO AROUND 100 THIS AFTERNOON.

LATEST GUIDANCE SUGGESTS THAT THE EXCESSIVE HEAT MAY CONTINUE INTO
MONDAY. AN INCREASE IN CLOUD COVER CONCEIVABLY COULD KEEP
TEMPERATURES FROM REACHING THE MIDDLE 90S AGAIN...BUT HIGHER DEW
POINTS MIGHT DEVELOP AND CAUSE AFTERNOON HEAT INDICES TO AGAIN
REACH NEAR 100. MOREOVER...THE EXTENDED STRING OF 90-DEGREE-PLUS
DAYS LIKELY WILL BEGIN TO TAKE ITS TOLL.

AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF HOT
WEATHER IS OCCURRING. HEAT ILLNESS IS POSSIBLE...ESPECIALLY AMONG
THE ELDERLY...THE VERY YOUNG AND THE INFIRM. DRINK PLENTY OF
FLUIDS...STAY IN AN AIR CONDITIONED ENVIRONMENT AND OUT OF THE
SUNSHINE...AND CHECK ON ELDERLY AND INFIRM RELATIVES AND
NEIGHBORS. 

MAKE SURE PETS AND LIVESTOCK HAVE PLENTY OF SHADE AND COOL 
WATER. REGARDING PETS...THE MOST HUMANE THING TO DO IS TO BRING
THEM INDOORS. FOR THOSE RESIDENTS IN URBAN AREAS WHERE
TEMPERATURES ARE THE HIGHEST... MAKE SURE YOUR DWELLING IS WELL
VENTILATED. DURING THE HOT WEATHER...NEVER LEAVE A PERSON OR
ANIMAL IN A CLOSED VEHICLE FOR ANY LENGTH OF TIME.

$$

IOVINO/DELISI
000 
WWUS71 KPHI 191950
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
350 PM EDT SAT JUL 19 2008

DEZ001-NJZ015-017>019-PAZ067>071-201100-
/O.UPG.KPHI.EH.A.0002.080720T0000Z-080721T2300Z/
/O.EXT.KPHI.EH.W.0002.000000T0000Z-080721T0000Z/
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
350 PM EDT SAT JUL 19 2008

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM EDT SUNDAY...

THE EXCESSIVE HEAT WARNING IS NOW IN EFFECT UNTIL 8 PM EDT
SUNDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT. 

TODAY IS ANOTHER HOT DAY, AND TONIGHT WILL BE NO DIFFERENT.
TEMPERATURES ACROSS THE REGION ARE IN THE MID 90S BUT A FRESH
SOUTHWEST TO WEST WIND IS PROVIDING ENOUGH VENTILATION, AND
BRINING IN DRY AIR TO OFFSET THE HIGH TEMPERATURES. AS A RESULT,
THE HUMIDITY HAS BEEN KEPT LOWER AND NOT AS OPPRESSIVE AS FRIDAY. 

THE VISIBILITY ACROSS THE REGION IS VERY GOOD WHICH IS A SURE SIGN
OF VENTILATION, AND CLEANER AIR OVERHEAD TODAY THAN ON FRIDAY. 

HOWEVER, THE EXCESSIVE HEAT WARNING WILL CONTINUE OVERNIGHT
THROUGH SUNDAY EVENING. THE TEMPERATURES WILL BE IN THE MID 70S
OVERNIGHT AND WITH LESS VENTILATION FROM THE WIND, WILL MAKE THE
NIGHTTIME AIR FEEL CLOSE. THE TEMPERATURES ON SUNDAY WILL BE A
DEGREE OR TWO HIGHER, BUT A NOTICEABLE INCREASE IN THE HUMIDITY
WILL OCCUR. HEAT INDICES WILL BE NEAR 100 DEGREES. 

SUNDAY EVENING WILL BRING AN END TO THE EXCESSIVE HEAT, BUT
TEMPERATURES ARE STILL GOING TO GET TO THE LOWER 90S WITH A HEAT
INDEX IN THE MID 90S ON MONDAY. TUESDAYS HIGH WILL BE NEAR 90 DEGREES.

TEMPERATURES WILL BE LOWERING A FEW DEGREES, OR INTO THE MID 80S
BY WEDNESDAY INTO FRIDAY. 
 
MAKE SURE PETS AND LIVESTOCK HAVE PLENTY OF SHADE AND COOL WATER.
REGARDING PETS...THE MOST HUMANE THING TO DO IS TO BRING THEM
INDOORS. FOR THOSE RESIDENTS IN URBAN AREAS WHERE TEMPERATURES ARE
THE HIGHEST... MAKE SURE YOUR DWELLING IS WELL VENTILATED. DURING
THE HOT WEATHER...NEVER LEAVE A PERSON OR ANIMAL IN A CLOSED
VEHICLE FOR ANY LENGTH OF TIME.

AN EXCESSIVE HEAT WARNING MEANS THAT A CONTINUED 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 UP ON RELATIVES AND NEIGHBORS.

$$


EBERWINE/IOVINO

What forecasters said that day

The local office's own words before this excessive heat watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this excessive heat watch went out at Jul 15, 3:15 PM EDT, 26 minutes earlier.

Area forecast discussion, Jul 15, 3:15 PM EDT, 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
315 PM EDT TUE JUL 15 2008

.SYNOPSIS...
HIGH PRESSURE WILL REMAIN OVER THE REGION THE ENTIRE WEEK AS IT
BECOMES HOT AND MORE HUMID.

&&

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
THE DYNAMICS ASSOCIATED WITH A HEAT-WAVE ARE NOT AS EXCITING AS
OTHER SITUATIONS, HOWEVER THE RESULTS ARE LONGER LASTING. WE LOOK
UPSTAIRS FIRST AND NOTICE THE TROUGH LIFTING OFF TO THE NORTHEAST
WITH THE JET STREAM. HIGH PRESSURE OVER TEXAS THIS AFTERNOON WILL
BUILD TO THE NORTHEAST AS WE PUT THE FIRSTS COALS ON THE FIRE.

A FAIR AMOUNTS OF DIURNAL CUMULUS ALONG THE EASTERN SEABOARD WILL
DECREASE AFTER SUNDOWN AND TONIGHT SHOULD BE A COMFORTABLE ONE.
TROPICAL STORM BERTHA AT LAST ADVISORY IS 690 NM OFF THE DE/NJ COAST
AND IS MOVING NORTH NORTHEAST. ONCE AGAIN WE HAVE A STALLED FRONT
BETWEEN THE MAINLAND AND THE STORM BUT CLOUDINESS REMAINS WELL OFF
THE COAST. A COMFORTABLE NIGHT TONIGHT WITH LOWS IN THE LOWER 50S TO
MID 60S AND DEW POINTS FROM 50 TO THE LOW AND MID 60S.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH WEDNESDAY NIGHT/...
THE DYNAMICS ASSOCIATED WITH A HEAT-WAVE ARE NOT AS EXCITING AS
OTHER SITUATIONS, HOWEVER THE RESULTS ARE LONGER LASTING. WE LOOK
UPSTAIRS FIRST AND NOTICE THE TROUGH LIFTING OFF TO THE NORTHEAST
WITH THE JET STREAM. HIGH PRESSURE OVER TEXAS THIS AFTERNOON WILL
BUILD TO THE NORTHEAST AS WE PUT THE FIRSTS COALS ON THE FIRE.

A FAIR AMOUNTS OF DIURNAL CUMULUS ALONG THE EASTERN SEABOARD WILL
DECREASE AFTER SUNDOWN AND TONIGHT SHOULD BE A COMFORTABLE ONE.
TROPICAL STORM BERTHA AT LAST ADVISORY IS 690 NM OFF THE DE/NJ COAST
AND IS MOVING NORTH NORTHEAST. ONCE AGAIN WE HAVE A STALLED FRONT
BETWEEN THE MAINLAND AND THE STORM BUT CLOUDINESS REMAINS WELL OFF
THE COAST. A COMFORTABLE NIGHT TONIGHT WITH LOWS IN THE LOWER 50S TO
MID 60S AND DEW POINTS FROM 50 TO THE LOW AND MID 60S.

&&

.LONG TERM /THURSDAY THROUGH TUESDAY/...
THE HEAT IS TURNING UP THROUGH THIS PERIOD. AS A RESULT...HAVE
ISSUED A EXCESSIVE HEAT WATCH FOR THE HIGHLY URBANIZED AREAS. THIS
IS NOT TO SAY THE SURROUNDING AREAS WONT BE HOT, BUT THE TOLERANCE
AWAY FROM THE HIGHLY URBANIZED AREAS IS GREATER. BY THE END OF THE
WEEK HOWEVER...THERE MAY BE ADVISORIES OR WARNINGS FOR OTHER AREAS
AS WELL. THE MESSAGE EARLY ON IS TO PREPARE FOR THE HEAT AND TAKE IT
EASY.

THE UPPER RIDGE BEGINS TO NOSE INTO THE OHIO VALLEY AND TAKES A
FOOTHOLD ON THE DELAWARE VALLEY BY THURSDAY. 80H TEMPERATURES WILL
REACH +16 TO +18C ON WEDNESDAY AND EVENING WARMER THURSDAY INTO
FRIDAY. THE SURFACE CIRCULATION IS LIGHT SO THERE WILL BE LITTLE
VENTILATION TO COUNT ON FOR THE HEAT TO ESCAPE INTO THE ATMOSPHERE.

HIGH TEMPERATURES ON WEDNESDAY WILL BE IN THE MID TO UPPER 80S FAR
NORTH...REACH 90 BY FRIDAY. DEW POINTS WILL CLIMB FROM 60 ON
WEDNESDAY TO 67 ON FRIDAY. FOR THE LEHIGH VALLEY HIGHS WILL BE IN
THE MID 90S AND DEW POINTS IN THE UPPER 50S ON WED TO THE MID 60S BY
FRIDAY. IN THE HIGHLY URBANIZED AREAS HIGHS WILL BE IN THE MID 90S
WITH THE TEMPERATURES NEARING 70 BY FRIDAY. SOUTHERN ZONES WILL HAVE
THE DEW POINTS REACHING 70 THURSDAY AND FRIDAY. NO PRECIPITATION IS
EXPECTED THROUGH THIS PERIOD. THERE WILL BE A SEA BREEZE SET IN EACH
DAY SO MUCH COOLER TEMPERATURES AT THE SHORE. AND THE OCEAN
TEMPERATURE HAS GONE UP THE PAST SEVERAL DAYS INTO THE MID AND UPPER
60S.

&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
HIGH PRESSURE PARKED TO OUR WEST AND SOUTHWEST WILL SLOWLY SLIDE
SOUTHEASTWARD DURING THE NEXT DAY OR TWO. THERE IS PLENTY OF DRY AIR
IN PLACE, ALTHOUGH WITH THE DAYTIME HEATING, JUST ENOUGH LOW-LEVEL
MOISTURE IS PRESENT TO PRODUCE SOME CUMULUS. MOST PLACES WILL HAVE
SCATTERED CUMULUS BUT IT MAY GO BROKEN IN SOME SPOTS FOR A SHORT
TIME, HOWEVER VFR CONDITIONS WILL DOMINATE. THESE CLOUDS ARE DRIVEN
BY DAYTIME HEATING, THEREFORE WE ARE EXPECTING THEM TO DISSIPATE
EARLY THIS EVENING. OTHERWISE, A CLEAR SKY EXPECTED TONIGHT. A
MAINLY VARIABLE WIND UNDER 10 KNOTS INTO THIS EVENING, HOWEVER A SEA
BREEZE CIRCULATION DEVELOPED EARLIER THIS AFTERNOON. THIS WILL
CONTINUE TO AFFECT KACY AND EVENTUALLY KMIV, THEN TRACK WESTWARD
THROUGH THE EARLY EVENING HOURS. WE CONTINUED WITH THE IDEA OF A
WIND SHIFT AFFECTING KTTN, KPNE, KPHL AND KILG. ONCE WE LOSE THE
HEATING, WINDS ARE EXPECTED TO BE RATHER LIGHT TO CALM FOR THE
OVERNIGHT.

THE FORECAST SOUNDINGS ARE NOT SHOWING MUCH IN THE WAY OF MOISTURE
TONIGHT AND EARLY WEDNESDAY MORNING. HOWEVER, A TOUCH OF FOG WILL BE
POSSIBLE, ESPECIALLY IN THE MORE PRONE LOCATIONS SUCH AS KRDG AND
KMIV. OTHERWISE, WITH HIGH PRESSURE IN CONTROL, PROBABLY JUST A
TOUCH OF CUMULUS DEVELOPING ON WEDNESDAY. A LIGHT NORTHERLY SURFACE
WIND SHOULD GRADUALLY TURN TO THE SOUTHWEST, HOWEVER ANOTHER SEA
BREEZE CIRCULATION WILL ONCE AGAIN OCCUR MAINLY AFTER 17Z.

OUTLOOK...
HIGH PRESSURE WILL SETTLE SOUTH OF THE AREA WEDNESDAY NIGHT AND
THURSDAY. AS LOW-LEVEL MOISTURE INCREASES, THERE MAY BE SOME FOG A
FEW HOURS EITHER SIDE OF DAYBREAK ON THURSDAY. ALSO, WITH THE
BUILDING HEAT AND HUMIDITY, SOME HAZE MAY DEVELOP. A COLD FRONT IS
THEN FORECAST TO DROP INTO OUR AREA SATURDAY AND POTENTIALLY STALL
ON SUNDAY, BEFORE MOVING BACK NORTHWARD. THE THREAT OF CONVECTION
APPEARS TO RETURN LATER SATURDAY AND SUNDAY.

&&

.MARINE...
A WIND GENERALLY 10 KNOTS OR LESS, COMPLIMENTS OF HIGH PRESSURE, IS
EXPECTED TO CONTINUE ACROSS THE WATERS DURING THE NEXT FEW DAYS.
GIVEN THE WEAK GRADIENT IN PLACE, SURFACE WINDS WILL BECOME ONSHORE
FROM ABOUT MIDDAY ON DURING WEDNESDAY. SPEAKING OF ONSHORE WINDS, A
SEA BREEZE ORGANIZED THIS AFTERNOON AROUND MIDDAY WITH NEARSHORE
WINDS EAST TO SOUTHEAST. THE WINDS HAVE TURNED TO THE SOUTHEAST IN
DELAWARE BAY ESPECIALLY CLOSER TO THE MOUTH /VIA A 1745Z CAPE MAY
FERRY REPORT/. WITH THE SURFACE HIGH MAINLY POSITIONED TO OUR WEST
THROUGH WEDNESDAY, AN ONSHORE COMPONENT OF THE WIND IS EXPECTED, BUT
GENERALLY UNDER 10 KNOTS. AS THE HIGH FINALLY SLIDES TO OUR SOUTH,
WINDS WILL BECOME SOUTHERLY THURSDAY AND CONTINUE INTO SATURDAY. A
FRONTAL BOUNDARY MAY DROP INTO PARTS OF THE REGION ON SATURDAY AND
STALL INTO SUNDAY. THE POSITION OF THIS FRONT WILL ULTIMATELY
DETERMINE THE WIND DIRECTION. THIS BOUNDARY MAY TRY AND LIFT BACK
NORTHWARD LATER SUNDAY. AS OF NOW, NO HEADLINES ON THE WATERS ARE
NEEDED. AS THE DEW POINTS RISE DURING THE SECOND HALF OF THIS WEEK,
SOME ADVECTION FOG WILL BE POSSIBLE OVER THE WATERS, ESPECIALLY
FRIDAY AND SATURDAY.

RIP CURRENTS...
A MODERATE RISK REMAINS IN EFFECT THROUGH THIS EVENING AS THE LONG
PERIOD SOUTHEASTERLY SWELLS CONTINUE. BUOY OBSERVATIONS AS WELL AS
C-MAN STATION REPORTS INDICATE THAT LONG PERIOD SOUTHEASTERLY
SWELLS /AROUND 11 SECONDS/ CONTINUE TO ARRIVE INTO OUR WATERS FROM
TROPICAL STORM BERTHA. THE TREND HAS BEEN A DIMINISHING ONE AS
BERTHA MOVES FURTHER AWAY, WITH SWELLS NOW GENERALLY 2 TO 3 FEET.
EVEN THOUGH THE RISK IS A BIT LOWER THAN PREVIOUS DAYS, CONTINUING
TO USE EXTRA CAUTION AND CHECK WITH LIFE GUARDS IS STRONGLY
RECOMMENDED.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...EXCESSIVE HEAT WATCH FROM THURSDAY AFTERNOON THROUGH SATURDAY
     AFTERNOON FOR PAZ067>071.
NJ...EXCESSIVE HEAT WATCH FROM THURSDAY AFTERNOON THROUGH SATURDAY
     AFTERNOON FOR NJZ015-017>019.
DE...EXCESSIVE HEAT WATCH FROM THURSDAY AFTERNOON THROUGH SATURDAY
     AFTERNOON FOR DEZ001.
MD...NONE.
MARINE...NONE.

&&

SYNOPSIS/NEAR-SHORT-LONG TERM...EBERWINE
AVIATION/MARINE...GORSE
Hazardous weather outlook, Jul 15, 3:40 AM EDT, 12 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
340 AM EDT TUE JUL 15 2008

DEZ002-003-MDZ008-012-015-019-020-NJZ001-007>010-012-013-016-020>023-
027-PAZ054-055-060>062-161000-
KENT DE-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
SALEM-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-
CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
340 AM EDT TUE JUL 15 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN
DELAWARE...EASTERN MARYLAND...NORTHEAST MARYLAND...CENTRAL NEW
JERSEY...NORTHERN NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL
PENNSYLVANIA AND NORTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

IT WILL BECOME HOTTER AND INCREASINGLY MORE HUMID STARTING
THURSDAY AND PROBABLY LASTING INTO THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ001-NJZ015-017>019-PAZ067>071-161000-
NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-CHESTER-
MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
340 AM EDT TUE JUL 15 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...CENTRAL
NEW JERSEY...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

IT WILL BECOME HOTTER AND INCREASINGLY MORE HUMID STARTING
THURSDAY AND PROBABLY LASTING INTO THE WEEKEND. HIGH TEMPERATURES IN
ALL LIKELIHOOD WILL REACH THE 90S ON THURSDAY WITH THE POTENTIAL
FOR MORE 90S AND MORE HUMID CONDITIONS FOR FRIDAY INTO THE
WEEKEND. THERE IS A CHANCE THAT HEAT ADVISORIES OR EXCESSIVE HEAT
WARNINGS MIGHT BECOME NECESSARY FOR URBANIZED AREAS LATER THIS WEEK
INTO THE WEEKEND. PLEASE LOOK FOR UPDATES IN LATER PRODUCTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ004-NJZ014-024>026-161000-
DELAWARE BEACHES-EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-COASTAL OCEAN-
340 AM EDT TUE JUL 15 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL
NEW JERSEY AND SOUTHERN NEW JERSEY.

.DAY ONE...TODAY AND TONIGHT

THERE IS A MODERATE RISK OF RIP CURRENTS TODAY. CONSULT YOUR
LOCAL BEACH PATROL BEFORE ENTERING THE WATER TODAY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS THE POTENTIAL FOR AN ENHANCED RISK OF RIP CURRENTS
THROUGH MOST OF THE WEEK. CONSULT YOUR LOCAL BEACH PATROL BEFORE
ENTERING THE WATER THE NEXT SEVERAL DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-431-450>455-161000-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM-
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM-
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM-
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM-
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM-
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM-
340 AM EDT TUE JUL 15 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND
DELAWARE BAY WATERS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

TFG

Nearby

Excessive Heat Watches in New Jersey, 2008Excessive Heat Watches in Pennsylvania, 2008Excessive Heat Watches in Delaware, 2008Every excessive heat watch in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.