Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 122, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 23, 2011, 8:21 AM EDT for Monroe County, Pennsylvania. It was in force for 24 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
- Jun 23, 2011, 8:21 AM EDT (12:21 UTC)
- Expired
- Jun 23, 2011, 8:45 AM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 121 km from the middle of the area, began a volume at 12:22 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
Albany, NY (KALY), launched 12:00Z, 0.4 hours before the alert went out and 204 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
- 202 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 486 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
356
WUUS51 KPHI 231221
SVRPHI
PAC089-231245-
/O.NEW.KPHI.SV.W.0122.110623T1221Z-110623T1245Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
821 AM EDT THU JUN 23 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTH CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 845 AM EDT
* AT 817 AM 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
GOULDSBORO STATE PARK...OR 8 MILES NORTHWEST OF MOUNT POCONO...AND
MOVING NORTHEAST AT 25 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SKYTOP AROUND 840 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
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.
&&
LAT...LON 4125 7514 4116 7549 4122 7555 4125 7550
4126 7514
TIME...MOT...LOC 1221Z 244DEG 22KT 4122 7545
$$
TFG1 follow-up statement
811
WWUS51 KPHI 231242
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
842 AM EDT THU JUN 23 2011
PAC089-231251-
/O.EXP.KPHI.SV.W.0122.000000T0000Z-110623T1245Z/
MONROE PA-
842 AM EDT THU JUN 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MONROE COUNTY
WILL EXPIRE AT 845 AM EDT...
THE THUNDERSTORM JUST NORTHWEST OF SKYTOP IS MOVING INTO PIKE COUNTY.
IF YOU SEE THREATENING WEATHER, PLEASE MOVE INDOORS QUICKLY.
LAT...LON 4125 7514 4116 7549 4122 7555 4125 7550
4126 7514
TIME...MOT...LOC 1241Z 244DEG 22KT 4125 7529
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 6:50 AM EDT | Special Weather Statement | PHI | Monroe | 55 min |
| Jun 23, 8:02 AM EDT | Special Weather Statement | PHI | Carbon, Monroe | 88 min |
| Jun 23, 8:54 AM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 81 min |
| Jun 23, 5:18 PM EDT | Special Weather Statement | PHI | Philadelphia | 87 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011
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.