Alert archive / New Jersey / Excessive Heat Watches in 2011

Excessive Heat Watch 2, NWS Philadelphia/Mount Holly

June 6, 20114 counties in New Jersey; New Castle County, Delaware; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this excessive heat watch at Jun 6, 2011, 1:46 PM EDT for 4 counties in New Jersey; New Castle County, Delaware; Delaware County, Philadelphia County, Pennsylvania. It took effect at Jun 8, 2011, 12:00 PM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
Jun 6, 2011, 1:46 PM EDT (17:46 UTC)
In effect from
Jun 8, 2011, 12:00 PM EDT
Expired
Jun 7, 2011, 3:15 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 17:52 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, 5.8 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 2011-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2011-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
974 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

189 
WWUS71 KPHI 061746
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
146 PM EDT MON JUN 6 2011

DEZ001-NJZ015-017>019-PAZ067>071-071000-
/O.NEW.KPHI.EH.A.0002.110608T1600Z-110610T0000Z/
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
146 PM EDT MON JUN 6 2011

...EXCESSIVE HEAT WATCH IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY EVENING...

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

* LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN
  DELAWARE AND WEST CENTRAL NEW JERSEY.

* HAZARDS...A VERY HOT AND HUMID AIRMASS OVER THE REGION WILL
  CAUSE TEMPERATURES TO SWELL INTO THE MID-90S CREATING DANGEROUS
  CONDITIONS.

* HEAT INDEX VALUES...BETWEEN 95 TO 100 ON WEDNESDAY TO NEAR 100
  ON THURSDAY.

* IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT 
  GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING. 
  THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE 
  AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR 
  CONDITIONING IS NOT AVAILABLE. 

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. STAY IN AN AIR-CONDITIONED
ROOM...STAY OUT OF THE SUN...AND CHECK UP 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 HEAT 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 911.

&&

$$

HEAVENER
2 follow-up statements
367 
WWUS71 KPHI 070755
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 AM EDT TUE JUN 7 2011

DEZ001-NJZ015-017>019-PAZ067>071-072100-
/O.CON.KPHI.EH.A.0002.110608T1600Z-110610T0000Z/
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
355 AM EDT TUE JUN 7 2011

...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY
AFTERNOON THROUGH THURSDAY EVENING...

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

* LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN 
  DELAWARE AND WEST CENTRAL NEW JERSEY. 

* HAZARDS...A VERY HOT AND HUMID AIR MASS OVER THE REGION WILL
  CAUSE TEMPERATURES TO SWELL INTO THE MID 90S AND CREATE
  DANGEROUS CONDITIONS...ESPECIALLY IN HIGHLY URBANIZED AREAS. 

* HEAT INDEX VALUES...BETWEEN 95 TO 100 ON WEDNESDAY...AND AROUND
  100 ON THURSDAY.

* IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT 
  GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING. 
  THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE 
  AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR 
  CONDITIONING IS NOT AVAILABLE. 

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. STAY IN AN AIR-CONDITIONED
ROOM...STAY OUT OF THE SUN...AND CHECK UP 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 HEAT 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 911.

AT A MINIMUM...SEE TO IT THAT PETS HAVE ACCESS TO A SHADED AND
WELL-VENTILATED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE
THING TO DO IS TO BRING THEM INTO AN AIR CONDITIONED ENVIRONMENT. 

PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH
OF TIME. IT COULD RESULT IN THEIR DEATH. 

&&

$$
071 
WWUS71 KPHI 071915
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
315 PM EDT TUE JUN 7 2011

DEZ001-NJZ015-017>019-PAZ067>071-081000-
/O.UPG.KPHI.EH.A.0002.110608T1600Z-110610T0000Z/
/O.NEW.KPHI.EH.W.0002.110608T1600Z-110610T0000Z/
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
315 PM EDT TUE JUN 7 2011

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN
EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT FROM NOON WEDNESDAY
TO 8 PM EDT THURSDAY. THE EXCESSIVE HEAT WATCH IS NO LONGER IN
EFFECT. 

* LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN 
  DELAWARE AND WEST CENTRAL NEW JERSEY INCLUDING TRENTON... 
  PHILADELPHIA...CAMDEN AND WILMINGTON. 

* HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS
  CONDITIONS IN THE AFTERNOON AND EARLY EVENING HOURS. A VERY HOT
  AND HUMID AIR MASS WILL CAUSE TEMPERATURES TO SWELL INTO THE MID
  AND UPPER 90S AND CREATE DANGEROUS CONDITIONS...ESPECIALLY IN
  HIGHLY URBANIZED AREAS.

* HEAT INDEX VALUES...AROUND 100.

* IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT
  GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING.
  THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE
  AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR
  CONDITIONING IS NOT AVAILABLE.

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 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.

TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN
POSSIBLE...RESCHEDULE STRENUOUS ACTIVITY TO EARLY MORNING OR
LATE 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.

AT A MINIMUM...SEE TO IT THAT PETS HAVE ACCESS TO A SHADED AND
WELL-VENTILATED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE
THING TO DO IS TO BRING THEM INTO AN AIR CONDITIONED ENVIRONMENT. 

PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH
OF TIME. IT COULD RESULT IN THEIR DEATH. 

&&

$$

NJZ007>010-012-013-020-027-PAZ060>062-081000-
/O.NEW.KPHI.HT.Y.0002.110608T1600Z-110610T0000Z/
WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-OCEAN-
SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...FLEMINGTON...
SOMERVILLE...NEW BRUNSWICK...FREEHOLD...JACKSON...
WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON
315 PM EDT TUE JUN 7 2011

...HEAT ADVISORY IN EFFECT FROM NOON WEDNESDAY TO 8 PM EDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A HEAT
ADVISORY...WHICH IS IN EFFECT FROM NOON WEDNESDAY TO 8 PM EDT
THURSDAY. 

* LOCATIONS...THE LEHIGH VALLEY IN PENNSYLVANIA AND MUCH OF CENTRAL
  AND NORTHERN NEW JERSEY.

* HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS
  CONDITIONS IN THE AFTERNOON AND EARLY EVENING HOURS. A VERY HOT
  AND HUMID AIR MASS WILL CAUSE TEMPERATURES TO SWELL INTO THE MID
  AND UPPER 90S AND CREATE DANGEROUS CONDITIONS.

* HEAT INDEX VALUES...AROUND 100.

* IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT
  GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING.
  THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE
  AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR
  CONDITIONING IS NOT AVAILABLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS
EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY
WILL COMBINE TO CREATE A 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.

TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN
POSSIBLE...RESCHEDULE STRENUOUS ACTIVITY TO EARLY MORNING OR
LATE 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.

AT A MINIMUM...SEE TO IT THAT PETS HAVE ACCESS TO A SHADED AND
WELL-VENTILATED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE
THING TO DO IS TO BRING THEM INTO AN AIR CONDITIONED ENVIRONMENT. 

PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH
OF TIME. IT COULD RESULT IN THEIR DEATH. 

&&

$$

TFG/RPW

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 11:14 PM EDTSpecial Weather StatementPHIKent61 min
Jun 5, 8:06 PM EDTSevere Thunderstorm WarningPHIBerks39 min
Jun 5, 8:16 PM EDTSpecial Weather StatementPHICarbon, Lehigh, Northampton59 min

Nearby

Excessive Heat Watches in New Jersey, 2011Excessive Heat Watches in Pennsylvania, 2011Excessive Heat Watches in Delaware, 2011Every excessive heat watch in 2011

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.