Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 26, 2012, 2:42 PM EDT for Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 48 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
- May 26, 2012, 2:42 PM EDT (18:42 UTC)
- Expired
- May 26, 2012, 3:30 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Warren County, NJ, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 18:43 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 26, 3:00 PM EDT | TSTM WND DMG | Hamilton Twp, PA | TREES DOWN IN HAMILTON TOWNSHIP. |
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 26, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.7 hours before the alert went out and 196 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
- 144 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
122 WUUS51 KPHI 261842 SVRPHI NJC041-PAC089-095-261930- /O.NEW.KPHI.SV.W.0014.120526T1842Z-120526T1930Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 242 PM EDT SAT MAY 26 2012 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA... SOUTHERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA... WESTERN WARREN COUNTY IN NORTHWEST NEW JERSEY... * UNTIL 330 PM EDT * AT 238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR EAST BANGOR...OR 15 MILES NORTH OF EASTON...AND MOVING SOUTH AT 15 MPH. THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. * THE SEVERE THUNDERSTORM WILL BE NEAR... EAST BANGOR AROUND 245 PM EDT... BANGOR AND PEN ARGYL AROUND 250 PM EDT... WIND GAP AROUND 255 PM EDT... BELFAST AROUND 320 PM EDT... ROXBURG AROUND 325 PM EDT... HARMONY...TATAMY AND FORKS AROUND 330 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. THIS STORM HAS A HISTORY OF PRODUCING LARGE 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 800 PM EDT SATURDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 4071 7498 4067 7547 4100 7548 4101 7507 TIME...MOT...LOC 1839Z 355DEG 9KT 4090 7521 $$ GORSE
2 follow-up statements
519 WWUS51 KPHI 261909 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 309 PM EDT SAT MAY 26 2012 NJC041-PAC089-095-261930- /O.CON.KPHI.SV.W.0014.000000T0000Z-120526T1930Z/ WARREN NJ-MONROE PA-NORTHAMPTON PA- 309 PM EDT SAT MAY 26 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR NORTHERN NORTHAMPTON...SOUTHERN MONROE AND WESTERN WARREN COUNTIES... AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR PEN ARGYL...OR 14 MILES NORTH OF EASTON...MOVING SOUTH AT NEAR 10 MPH. THE STRONGEST PART OF THIS STORM IS IN SOUTHEASTERN MONROE COUNTY, WITH VERY LITTLE MOVEMENT. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR STRONG WINDS...LARGE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SATURDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 4075 7499 4074 7547 4100 7548 4101 7507 TIME...MOT...LOC 1907Z 339DEG 7KT 4089 7526 $$ GORSE
526 WWUS51 KPHI 261926 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 326 PM EDT SAT MAY 26 2012 NJC041-PAC089-095-261934- /O.EXP.KPHI.SV.W.0014.000000T0000Z-120526T1930Z/ WARREN NJ-MONROE PA-NORTHAMPTON PA- 326 PM EDT SAT MAY 26 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN NORTHAMPTON... SOUTHERN MONROE AND WESTERN WARREN COUNTIES WILL EXPIRE AT 330 PM EDT... THE THUNDERSTORM HAS BEEN SHOWING A WEAKENING TREND, THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE AT 330 PM. 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 800 PM EDT SATURDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. LAT...LON 4075 7499 4074 7547 4100 7548 4101 7507 TIME...MOT...LOC 1924Z 339DEG 7KT 4086 7524 $$ GORSE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 2:02 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 58 min |
| May 26, 2:18 PM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 5 hr |
| May 26, 2:23 PM EDT | Areal Flood Advisory | PHI | Carbon | 3 hr |
| May 26, 2:36 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 5 hr |
| May 26, 2:46 PM EDT | Special Weather Statement | PHI | Carbon | 44 min |
| May 26, 3:15 PM EDT | Areal Flood Advisory | PHI | Carbon | 2 hr |
| May 26, 3:32 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 4 hr |
| May 26, 3:39 PM EDT | Special Weather Statement | PHI | Monroe | 51 min |
| May 26, 3:40 PM EDT | Excessive Heat Watch | PHI | Delaware, Philadelphia | 23 hr |
| May 26, 3:45 PM EDT | Areal Flood Advisory | PHI | Carbon | 3 hr |
| May 26, 3:48 PM EDT | Areal Flood Advisory | PHI | Monroe | 3 hr |
| May 26, 3:51 PM EDT | Special Weather Statement | PHI | Carbon | 39 min |
| May 26, 3:54 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| May 26, 4:31 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe, Northampton | 3 hr |
| May 26, 4:37 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 38 min |
| May 26, 4:54 PM EDT | Special Weather Statement | PHI | Northampton | 51 min |
| May 26, 5:26 PM EDT | Special Weather Statement | PHI | Bucks | 49 min |
| May 26, 5:33 PM EDT | Flash Flood Warning | PHI | Monroe | 114 min |
| May 26, 5:36 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 114 min |
| May 26, 6:02 PM EDT | Special Weather Statement | PHI | Berks | 43 min |
| May 26, 6:10 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Montgomery | 111 min |
| May 26, 6:26 PM EDT | Special Weather Statement | PHI | Berks | 49 min |
| May 26, 7:18 PM EDT | Areal Flood Advisory | PHI | Bucks | 60 min |
| May 26, 7:20 PM EDT | Areal Flood Advisory | PHI | Berks, Chester | 59 min |
| May 26, 1:39 PM EDT | Special Weather Statement | PHI | Warren | 51 min |
| May 26, 1:42 PM EDT | Special Weather Statement | PHI | Sussex | 63 min |
| May 26, 2:28 PM EDT | Special Weather Statement | PHI | Sussex | 62 min |
| May 26, 7:30 PM EDT | Special Weather Statement | PHI | Middlesex | 45 min |
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.