Alert archive / Maryland / Heat Advisories in 2012
Heat Advisory 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this heat advisory at Jun 30, 2012, 3:48 AM EDT for 5 counties in Maryland; Kent County, Sussex County, Delaware. It took effect at Jun 30, 2012, 11:00 AM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2012, 3:48 AM EDT (07:48 UTC)
- In effect from
- Jun 30, 2012, 11:00 AM EDT
- Expired
- Jun 30, 2012, 8:00 PM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 43 km from the middle of the area, began a volume at 07:49 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 7.8 hours before the alert went out and 129 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.
- Mixed-layer CAPE
- 2642 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 1881 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
852 WWUS71 KPHI 300748 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 348 AM EDT SAT JUN 30 2012 DEZ001-NJZ015-017>019-PAZ067>071-302000- /O.CON.KPHI.EH.W.0003.000000T0000Z-120702T0000Z/ 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 348 AM EDT SAT JUN 30 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT SUNDAY... * HEAT INDEX VALUES...REACHING AROUND 100 TODAY AND SUNDAY DURING THE AFTERNOONS. DROPPING ONLY INTO THE MID 70S TO AROUND 80 LATE AT NIGHT. LOCALLY HIGHER VALUES IN SOME INNER CITY AREAS. * TEMPERATURES...REACHING THE MID TO UPPER 90S ON TODAY AND SUNDAY DURING THE AFTERNOONS. DROPPING ONLY INTO THE 70S LATE AT NIGHT. LOCALLY HIGHER VALUES IN SOME INNER CITY AREAS. * IMPACTS...THE WORST ARE FELT BY THOSE WHO LIVE AND/OR WORK IN THE URBAN AREAS. THOSE WHO ARE AT GREATER RISK INCLUDE THE ELDERLY...THE INFIRM...CHILDREN AND ANYONE WITHOUT AIR CONDITIONING. PLEASE KEEP YOUR PETS COOL ALSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES IS OCCURRING. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY IS CREATING 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 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. PLEASE BE SURE THAT YOUR PETS HAVE ACCESS TO PLENTY OF COOL WATER AND A SHADED AND WELL-VENTILATED PLACE TO STAY. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED PLACE. && $$ DEZ002-003-MDZ008-012-015-019-020-302000- /O.NEW.KPHI.HT.Y.0004.120630T1500Z-120701T0000Z/ KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE- INCLUDING THE CITIES OF...DOVER...GEORGETOWN...ELKTON... CHESTERTOWN...CENTREVILLE...EASTON...DENTON 348 AM EDT SAT JUN 30 2012 ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A HEAT ADVISORY...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING. * HEAT INDEX VALUES...BETWEEN 100 AND 105 DEGREES. * TIMING...BEGINNING BY NOON AND CONTINUING INTO THE EARLY EVENING. * IMPACTS...THE WORST ARE FELT BY THOSE WHO LIVE AND/OR WORK IN THE URBAN AREAS. THOSE WHO ARE AT GREATER RISK INCLUDE THE ELDERLY...THE INFIRM...CHILDREN AND ANYONE WITHOUT AIR CONDITIONING. PLEASE KEEP YOUR PETS COOL ALSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITY TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 9 1 1. && $$
2 follow-up statements
666 WWUS71 KPHI 301950 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 350 PM EDT SAT JUN 30 2012 DEZ001-NJZ015-017>019-PAZ067>071-010400- /O.CON.KPHI.EH.W.0003.000000T0000Z-120702T0000Z/ 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 JUN 30 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT SUNDAY... * HEAT INDEX VALUES...REACHING AROUND 100 SUNDAY DURING THE AFTERNOON HOURS. * TEMPERATURES...IN THE LOW TO MID-90S ON SUNDAY. * IMPACTS...THE WORST ARE FELT BY THOSE WHO LIVE AND/OR WORK IN THE URBAN AREAS. THOSE WHO ARE AT GREATER RISK INCLUDE THE ELDERLY...THE INFIRM...CHILDREN AND ANYONE WITHOUT AIR CONDITIONING. PLEASE KEEP YOUR PETS COOL ALSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES IS OCCURRING. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY IS CREATING 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 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. PLEASE BE SURE THAT YOUR PETS HAVE ACCESS TO PLENTY OF COOL WATER AND A SHADED AND WELL-VENTILATED PLACE TO STAY. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED PLACE. && $$ DEZ002-003-MDZ008-012-015-019-020-010000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-120701T0000Z/ KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE- INCLUDING THE CITIES OF...DOVER...GEORGETOWN...ELKTON... CHESTERTOWN...CENTREVILLE...EASTON...DENTON 350 PM EDT SAT JUN 30 2012 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...AROUND 100 DUE TO TEMPERATURES IN THE LOW-90S...AND DEWPOINTS IN THE MID 60S. * TIMING...WILL CONTINUE THROUGH THE EVENING HOURS BEGINNING TO COOL AFTER 6PM. * IMPACTS...THE WORST ARE FELT BY THOSE WHO LIVE AND/OR WORK IN THE URBAN AREAS. THOSE WHO ARE AT GREATER RISK INCLUDE THE ELDERLY...THE INFIRM...CHILDREN AND ANYONE WITHOUT AIR CONDITIONING. PLEASE KEEP YOUR PETS COOL ALSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HEAT ADVISORY MEANS THAT A PERIOD OF HOT TEMPERATURES IS EXPECTED. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A SITUATION IN WHICH HEAT ILLNESSES ARE POSSIBLE. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITY TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 9 1 1. && $$
023 WWUS71 KPHI 010022 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 822 PM EDT SAT JUN 30 2012 DEZ002-003-MDZ008-012-015-019-020-010130- /O.EXP.KPHI.HT.Y.0004.000000T0000Z-120701T0000Z/ KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE- INCLUDING THE CITIES OF...DOVER...GEORGETOWN...ELKTON... CHESTERTOWN...CENTREVILLE...EASTON...DENTON 822 PM EDT SAT JUN 30 2012 ...HEAT ADVISORY HAS EXPIRED... THE HEAT ADVISORY FOR TODAY HAS EXPIRED AS TEMPERATURES HAVE FALLEN INTO THE MID TO UPPER 80S. $$ DEZ001-NJZ015-017>019-PAZ067>071-010830- /O.CON.KPHI.EH.W.0003.000000T0000Z-120702T0000Z/ NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER... NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 822 PM EDT SAT JUN 30 2012 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT SUNDAY... * HEAT INDEX VALUES...REACHING AROUND 100 SUNDAY DURING THE AFTERNOON HOURS. * TEMPERATURES...IN THE LOW TO MID-90S ON SUNDAY. * IMPACTS...THE WORST ARE FELT BY THOSE WHO LIVE AND/OR WORK IN THE URBAN AREAS. THOSE WHO ARE AT GREATER RISK INCLUDE THE ELDERLY...THE INFIRM...CHILDREN AND ANYONE WITHOUT AIR CONDITIONING. PLEASE KEEP YOUR PETS COOL ALSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES IS OCCURRING. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY IS CREATING A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN...AND CHECK UP ON RELATIVES AND NEIGHBORS. TAKE EXTRA PRECAUTIONS IF YOU WORK OR SPEND TIME OUTSIDE. WHEN POSSIBLE...RESCHEDULE STRENUOUS ACTIVITY TO EARLY MORNING OR EVENING. KNOW THE SIGNS AND SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. WEAR LIGHT WEIGHT AND LOOSE FITTING CLOTHING WHEN POSSIBLE AND DRINK PLENTY OF WATER. TO REDUCE RISK DURING OUTDOOR WORK...THE OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN SHADED OR AIR CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN EMERGENCY - CALL 9 1 1. PLEASE BE SURE THAT YOUR PETS HAVE ACCESS TO PLENTY OF COOL WATER AND A SHADED AND WELL-VENTILATED PLACE TO STAY. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED PLACE. && $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 11:03 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 72 min |
| Jun 29, 11:22 PM EDT | Special Weather Statement | PHI | Cecil | 53 min |
| Jun 29, 11:45 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 60 min |
| Jun 30, 12:45 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 60 min |
| Jun 29, 11:38 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 67 min |
| Jun 29, 11:50 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 55 min |
| Jun 30, 12:18 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 72 min |
Nearby
Heat Advisories in Maryland, 2012Heat Advisories in Delaware, 2012Every heat advisory in 2012
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.