Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 73, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 4, 2012, 11:07 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2012, 11:07 PM EDT (03:07 UTC)
- Expired
- Jul 4, 2012, 11:34 PM EDT
- In force
- 27 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 03:07 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 3.1 hours before the alert went out and 224 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
- 2993 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1701 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
568
WUUS51 KPHI 050307
SVRPHI
PAC011-077-050345-
/O.NEW.KPHI.SV.W.0073.120705T0307Z-120705T0345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1107 PM EDT WED JUL 4 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
WEST CENTRAL LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 1145 PM EDT
* AT 1103 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR WANAMAKERS...OR 14 MILES
SOUTHWEST OF LEHIGHTON...AND MOVING SOUTH AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
LENHARTSVILLE AROUND 1125 PM EDT...
KUTZTOWN AROUND 1140 PM EDT...
LYONS...FLEETWOOD AND TOPTON AROUND 1145 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 4071 7581 4040 7557 4039 7558 4034 7593
4065 7597
TIME...MOT...LOC 0306Z 339DEG 18KT 4066 7588
$$
DRAG2 follow-up statements
733
WWUS51 KPHI 050325
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1125 PM EDT WED JUL 4 2012
PAC077-050334-
/O.CAN.KPHI.SV.W.0073.000000T0000Z-120705T0345Z/
LEHIGH PA-
1125 PM EDT WED JUL 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL LEHIGH COUNTY IS
CANCELLED...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 4064 7590 4066 7587 4058 7573 4040 7557
4039 7558 4034 7592
TIME...MOT...LOC 0324Z 326DEG 18KT 4060 7579
$$
PAC011-050345-
/O.CON.KPHI.SV.W.0073.000000T0000Z-120705T0345Z/
BERKS PA-
1125 PM EDT WED JUL 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR NORTHEASTERN BERKS COUNTY...
AT 1120 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR LENHARTSVILLE...OR 15
MILES SOUTH OF LEHIGHTON...MOVING SOUTHEAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
KUTZTOWN BY 1140 PM EDT...
TOPTON...LYONS AND 7 MILES NORTHEAST OF FLEETWOOD BY 1145 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 4064 7590 4066 7587 4058 7573 4040 7557
4039 7558 4034 7592
TIME...MOT...LOC 0324Z 326DEG 18KT 4060 7579
$$
DRAG578
WWUS51 KPHI 050334
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1134 PM EDT WED JUL 4 2012
PAC011-050344-
/O.CAN.KPHI.SV.W.0073.000000T0000Z-120705T0345Z/
BERKS PA-
1134 PM EDT WED JUL 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BERKS COUNTY IS
CANCELLED...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 4064 7590 4066 7587 4058 7573 4040 7557
4039 7558 4034 7592
TIME...MOT...LOC 0334Z 326DEG 18KT 4056 7575
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 9:18 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 57 min |
| Jul 4, 10:37 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 38 min |
| Jul 4, 11:14 PM EDT | Special Weather Statement | PHI | Bucks, Lehigh | 46 min |
| Jul 4, 11:37 PM EDT | Special Weather Statement | PHI | Montgomery | 38 min |
| Jul 4, 11:45 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 28 min |
| Jul 5, 1:34 AM EDT | Special Weather Statement | PHI | Lehigh | 56 min |
| Jul 5, 1:41 AM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Lehigh, Montgomery, Northampton | 34 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2012Every severe thunderstorm warning 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.