Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 29, 2012, 5:25 PM EDT for Berks County, Carbon County, Lehigh County, Pennsylvania. It was in force for 95 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 29, 2012, 5:25 PM EDT (21:25 UTC)
- Expired
- May 29, 2012, 7:00 PM EDT
- In force
- 95 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 145 km from the middle of the area, began a volume at 21:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 29, 6:00 PM EDT | TSTM WND DMG | Towamensing Twp, PA | TREES REPORTED DOWN IN TOWAMENSING. |
| May 29, 6:15 PM EDT | HAIL 0.75 | Palmerton, PA | PENNY SIZE HAIL REPORTED IN PALMERTON. |
| May 29, 6:30 PM EDT | TSTM WND DMG | South Whitehall Twp, PA | WIRES DOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.4 hours before the alert went out and 149 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
- 667 J/kg
- Mixed-layer CIN
- -217 J/kg
- Mixed-layer LCL
- 1153 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
789
WUUS51 KPHI 292125
SVRPHI
PAC011-025-077-292300-
/O.NEW.KPHI.SV.W.0016.120529T2125Z-120529T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
525 PM EDT TUE MAY 29 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
NORTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
THIS INCLUDES THE CITY OF LEHIGHTON...
* UNTIL 700 PM EDT
* AT 520 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 9 MILES NORTHWEST OF
STRAUSSTOWN...OR 26 MILES NORTHWEST OF READING...AND MOVING EAST AT
30 MPH. OTHER LIKELY SEVERE THUNDERSTORMS ARE ALSO IN DAUPHIN
AND LEBANON COUNTIES AND IF THEY MAINTAIN THEMSELVES WILL AFFECT
BERKS COUNTY.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WANAMAKERS AROUND 605 PM EDT...
NEW MAHONING AROUND 610 PM EDT...
NEW TRIPOLI AND NEW MAHONING AROUND 615 PM EDT...
JORDAN VALLEY AND LEHIGHTON AROUND 620 PM EDT...
EMERALD AND NEFFS AROUND 625 PM EDT...
PALMERTON AND SLATINGTON AROUND 630 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.
STORMS TODAY HAVE HAD A HISTORY OF PRODUCING WIND DAMAGE IN
CENTRAL PENNSYLVANIA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS!
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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA.
&&
LAT...LON 4058 7602 4065 7599 4073 7578 4091 7600
4101 7575 4108 7578 4114 7567 4111 7562
4099 7550 4094 7557 4082 7547 4080 7559
4075 7560 4072 7557 4073 7553 4066 7548
4067 7544 4066 7542 4033 7618 4049 7643
TIME...MOT...LOC 2123Z 251DEG 28KT 4061 7625
$$
TFG2 follow-up statements
532
WWUS51 KPHI 292155
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 PM EDT TUE MAY 29 2012
PAC011-025-077-292300-
/O.CON.KPHI.SV.W.0016.000000T0000Z-120529T2300Z/
BERKS PA-LEHIGH PA-CARBON PA-
555 PM EDT TUE MAY 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CARBON...NORTHERN LEHIGH AND NORTHERN BERKS COUNTIES...
AT 550 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM NEW MAHONING TO BOWMANSTOWN
TO BELTZVILLE STATE PARK...OR ALONG A LINE EXTENDING FROM 6 MILES
SOUTHWEST OF LEHIGHTON TO LEHIGHTON TO 8 MILES EAST OF LEHIGHTON...
MOVING EAST AT 35 MPH.
OTHER POTENTIALLY SEVERE THUNDERSTORMS WERE OVER NORTHERN BERKS
COUNTY.
THE LINE OF SEVERE THUNDERSTORMS WILL BE NEAR...
LEHIGHTON...JIM THORPE...PARRYVILLE AND WEISSPORT BY 600 PM EDT...
WEISSPORT EAST BY 605 PM EDT...
BELTZVILLE STATE PARK...WANAMAKERS AND STRAUSSTOWN BY 610 PM EDT...
JORDAN VALLEY BY 615 PM EDT...
NEW TRIPOLI BY 620 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA.
&&
LAT...LON 4058 7602 4065 7599 4073 7578 4091 7600
4101 7575 4108 7578 4114 7567 4111 7562
4099 7550 4094 7557 4082 7547 4080 7559
4075 7560 4072 7557 4073 7553 4066 7548
4067 7544 4066 7542 4033 7618 4049 7643
TIME...MOT...LOC 2154Z 249DEG 31KT 4081 7578 4080 7563
4086 7552
$$
TFG217
WWUS51 KPHI 292225
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
625 PM EDT TUE MAY 29 2012
PAC011-025-077-292300-
/O.CON.KPHI.SV.W.0016.000000T0000Z-120529T2300Z/
BERKS PA-LEHIGH PA-CARBON PA-
625 PM EDT TUE MAY 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTHERN CARBON...NORTHERN LEHIGH AND NORTHERN BERKS COUNTIES...
AT 620 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM BERNVILLE
TO CENTERPORT TO LENHARTSVILLE...OR ALONG A LINE EXTENDING FROM 16
MILES NORTHWEST OF READING TO 11 MILES NORTH OF READING TO 15 MILES
NORTH OF READING...MOVING NORTHEAST AT 25 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
LENHARTSVILLE BY 630 PM EDT...
HAMBURG BY 635 PM EDT...
CLAUSSVILLE AND NEW TRIPOLI BY 650 PM EDT...
EMERALD...WANAMAKERS...JORDAN VALLEY AND 6 MILES WEST OF SLATINGTON
BY 700 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA.
&&
LAT...LON 4056 7614 4057 7604 4065 7599 4074 7577
4083 7590 4099 7552 4094 7557 4082 7548
4080 7559 4075 7560 4072 7557 4073 7553
4066 7548 4066 7542 4034 7615 4033 7619
4036 7623 4037 7625
TIME...MOT...LOC 2225Z 213DEG 20KT 4051 7612 4051 7598
4056 7586
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 12:29 PM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 8 hr |
| May 29, 1:36 PM EDT | Special Weather Statement | PHI | Monroe | 54 min |
| May 29, 1:50 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 115 min |
| May 29, 5:06 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 114 min |
| May 29, 5:45 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 75 min |
| May 29, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 91 min |
| May 29, 6:23 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 112 min |
| May 29, 6:44 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Lehigh, Montgomery | 3 hr |
| May 29, 6:46 PM EDT | Special Weather Statement | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 89 min |
| May 29, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 53 min |
| May 29, 7:34 PM EDT | Special Weather Statement | PHI | Delaware, Philadelphia | 56 min |
| May 29, 7:35 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 115 min |
| May 29, 7:44 PM EDT | Special Weather Statement | PHI | Bucks | 61 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.