Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 160, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 4, 2012, 3:21 PM EDT for 4 counties in Pennsylvania; Hunterdon County, Warren County, New Jersey. It was in force for 54 min. 1 report 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
- Aug 4, 2012, 3:21 PM EDT (19:21 UTC)
- Expired
- Aug 4, 2012, 4:15 PM EDT
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 19:23 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 |
|---|---|---|---|
| Aug 4, 3:35 PM EDT | TSTM WND DMG | Easton, PA | TREES AND WIRES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 203 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
- 2028 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
657 WUUS51 KPHI 041921 SVRPHI NJC019-041-PAC017-077-089-095-042015- /O.NEW.KPHI.SV.W.0160.120804T1921Z-120804T2015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 321 PM EDT SAT AUG 4 2012 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL LEHIGH COUNTY IN EASTERN PENNSYLVANIA... THIS INCLUDES THE CITY OF ALLENTOWN... NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA... THIS INCLUDES THE CITY OF EASTON... SOUTH CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA... WEST CENTRAL HUNTERDON COUNTY IN NORTHWEST NEW JERSEY... SOUTHWESTERN WARREN COUNTY IN NORTHWEST NEW JERSEY... NORTH CENTRAL BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... * UNTIL 415 PM EDT * AT 319 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR OLD ORCHARD AND EASTON...AND MOVING NORTH AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GLENDON AROUND 330 PM EDT... WILSON...FORKS AND EASTON AROUND 335 PM EDT... NAZARETH AROUND 340 PM EDT... TATAMY AROUND 345 PM EDT... BELFAST AND HARMONY AROUND 355 PM EDT... WIND GAP AROUND 405 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. 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 4098 7540 4089 7491 4050 7517 4056 7550 TIME...MOT...LOC 1921Z 200DEG 16KT 4064 7528 $$ IOVINO
1 follow-up statement
031
WWUS51 KPHI 041940
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
340 PM EDT SAT AUG 4 2012
PAC017-041951-
/O.CAN.KPHI.SV.W.0160.000000T0000Z-120804T2015Z/
BUCKS PA-
340 PM EDT SAT AUG 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BUCKS COUNTY IS
CANCELLED...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
LAT...LON 4089 7491 4058 7512 4057 7518 4057 7519
4061 7520 4057 7527 4060 7549 4098 7540
TIME...MOT...LOC 1941Z 200DEG 16KT 4072 7524
$$
NJC019-041-PAC077-089-095-042015-
/O.CON.KPHI.SV.W.0160.000000T0000Z-120804T2015Z/
WARREN NJ-HUNTERDON NJ-LEHIGH PA-MONROE PA-NORTHAMPTON PA-
340 PM EDT SAT AUG 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHAMPTON...SOUTH CENTRAL MONROE...EAST CENTRAL LEHIGH...WEST
CENTRAL HUNTERDON AND SOUTHWESTERN WARREN COUNTIES...
AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR FORKS AND EASTON...MOVING NORTH AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BELFAST AND HARMONY BY 350 PM EDT...
ROXBURG BY 400 PM EDT...
WIND GAP BY 405 PM EDT...
BANGOR AND PEN ARGYL BY 410 PM EDT...
EAST BANGOR...ROSETO...PORTLAND AND 6 MILES WEST OF BELVIDERE BY
415 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.
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 4089 7491 4058 7512 4057 7518 4057 7519
4061 7520 4057 7527 4060 7549 4098 7540
TIME...MOT...LOC 1941Z 200DEG 16KT 4072 7524
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 1:12 PM EDT | Special Weather Statement | PHI | Philadelphia | 63 min |
| Aug 4, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 34 min |
| Aug 4, 1:46 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 44 min |
| Aug 4, 2:51 PM EDT | Special Weather Statement | PHI | Northampton | 54 min |
| Aug 4, 3:55 PM EDT | Special Weather Statement | PHI | Lebanon | 65 min |
| Aug 4, 4:08 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 52 min |
| Aug 4, 4:49 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 56 min |
| Aug 4, 2:13 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 62 min |
| Aug 4, 2:28 PM EDT | Special Marine Warning | PHI | 62 min | |
| Aug 4, 2:53 PM EDT | Special Weather Statement | PHI | Mercer | 67 min |
| Aug 4, 3:35 PM EDT | Special Marine Warning | PHI | 38 min | |
| Aug 4, 3:42 PM EDT | Special Weather Statement | PHI | Middlesex, Somerset | 63 min |
| Aug 4, 3:47 PM EDT | Small Craft Advisory | PHI | 39 hr | |
| Aug 4, 4:01 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 59 min |
| Aug 4, 5:30 PM EDT | Small Craft Advisory | PHI | 4 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2012Severe Thunderstorm Warnings in New Jersey, 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.