Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 123, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 23, 2011, 8:54 AM EDT for Sussex County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 81 min. 2 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
- Jun 23, 2011, 8:54 AM EDT (12:54 UTC)
- Expired
- Jun 23, 2011, 10:15 AM EDT
- In force
- 81 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 139 km from the middle of the area, began a volume at 12:56 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 |
|---|---|---|---|
| Jun 23, 9:30 AM EDT | TSTM WND DMG | Middle Smithfield Twp, PA | RT 209 TREES DOWN ON ROADWAY AND CARS |
| Jun 23, 9:30 AM EDT | TSTM WND DMG | Stroud Twp, PA | TWO TREES 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, 0.9 hours before the alert went out and 182 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
- 414 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
255
WUUS51 KPHI 231254
SVRPHI
NJC037-041-PAC089-095-231415-
/O.NEW.KPHI.SV.W.0123.110623T1254Z-110623T1415Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
854 AM EDT THU JUN 23 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
SOUTHERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
WEST CENTRAL SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
NORTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 1015 AM EDT
* AT 851 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
REEDERS...OR 9 MILES SOUTH OF MOUNT POCONO...AND MOVING EAST AT 20
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
REEDERS AROUND 900 AM EDT...
STORMVILLE AND SCOTRUN AROUND 905 AM EDT...
ANALOMINK AND HERNYVILLE AROUND 915 AM EDT...
EAST STROUDSBURG AND DELAWARE WATER GAP AROUND 920 AM EDT...
ECHO LAKE AROUND 940 AM EDT...
FLATBROOKVILLE AROUND 955 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 4097 7472 4093 7544 4105 7546 4116 7516
4115 7509 4110 7505 4109 7501 4111 7495
4121 7487 4122 7488 4126 7485 4125 7484
TIME...MOT...LOC 1255Z 250DEG 19KT 4099 7535
$$
TFG2 follow-up statements
138
WWUS51 KPHI 231317
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
917 AM EDT THU JUN 23 2011
PAC095-231326-
/O.CAN.KPHI.SV.W.0123.000000T0000Z-110623T1415Z/
NORTHAMPTON PA-
917 AM EDT THU JUN 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN
NORTHAMPTON COUNTY IS CANCELLED...
THE SEVERE PART OF THE THUNDERSTORM WILL REMAIN NORTH OF THE COUNTY.
LAT...LON 4097 7472 4097 7510 4098 7523 4108 7531
4116 7516 4115 7509 4110 7505 4109 7501
4111 7495 4121 7487 4122 7488 4126 7485
4125 7484
TIME...MOT...LOC 1316Z 252DEG 21KT 4103 7517
$$
NJC037-041-PAC089-231415-
/O.CON.KPHI.SV.W.0123.000000T0000Z-110623T1415Z/
SUSSEX NJ-WARREN NJ-MONROE PA-
917 AM EDT THU JUN 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM EDT
FOR EAST CENTRAL MONROE...NORTHERN WARREN AND WEST CENTRAL SUSSEX
COUNTIES...
AT 913 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR EAST STROUDSBURG...OR 11 MILES SOUTHEAST OF MOUNT
POCONO...MOVING EAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
ECHO LAKE BY 930 AM EDT...
7 MILES NORTH OF BLAIRSTOWN BY 935 AM EDT...
FLATBROOKVILLE BY 945 AM EDT...
FIVE POINTS BY 955 AM EDT...
CRANDON LAKES BY 1000 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED 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.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING AND HEAVY DOWNPOURS ARE 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.
&&
LAT...LON 4097 7472 4097 7510 4098 7523 4108 7531
4116 7516 4115 7509 4110 7505 4109 7501
4111 7495 4121 7487 4122 7488 4126 7485
4125 7484
TIME...MOT...LOC 1316Z 252DEG 21KT 4103 7517
$$
TFG449
WWUS51 KPHI 231342
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
942 AM EDT THU JUN 23 2011
PAC089-231350-
/O.CAN.KPHI.SV.W.0123.000000T0000Z-110623T1415Z/
MONROE PA-
942 AM EDT THU JUN 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONROE COUNTY IS
CANCELLED...
THE SEVERE THUNDERSTORM HAS MOVED INTO NEW JERSEY.
LAT...LON 4101 7473 4097 7473 4101 7501 4106 7500
4107 7497 4109 7499 4110 7498 4112 7494
4115 7491 4121 7487 4122 7488 4126 7485
TIME...MOT...LOC 1340Z 252DEG 21KT 4107 7496
$$
NJC037-041-231415-
/O.CON.KPHI.SV.W.0123.000000T0000Z-110623T1415Z/
SUSSEX NJ-WARREN NJ-
942 AM EDT THU JUN 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM EDT
FOR NORTH CENTRAL WARREN AND WEST CENTRAL SUSSEX COUNTIES...
AT 938 AM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR FLATBROOKVILLE...OR 12 MILES WEST OF
NEWTON...MOVING EAST AT 25 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
FIVE POINTS AND CRANDON LAKES BY 955 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 STORM HAS DOWNED TREES IN MONROE COUNTY AND STILL SHOWS
INDICATIONS OF PRODUCING DAMAGING WINDS AND LARGE DAMAGING HAIL.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS!
&&
LAT...LON 4101 7473 4097 7473 4101 7501 4106 7500
4107 7497 4109 7499 4110 7498 4112 7494
4115 7491 4121 7487 4122 7488 4126 7485
TIME...MOT...LOC 1340Z 252DEG 21KT 4107 7496
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 9:46 AM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 59 min |
| Jun 23, 10:48 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 3 hr |
| Jun 23, 11:37 AM EDT | Flash Flood Warning | PHI | Morris, Sussex | 2 hr |
| Jun 23, 1:56 PM EDT | Special Weather Statement | PHI | Middlesex | 94 min |
| Jun 23, 3:47 PM EDT | Special Weather Statement | PHI | Monmouth | 58 min |
| Jun 23, 5:18 PM EDT | Special Weather Statement | PHI | Camden | 87 min |
| Jun 23, 6:26 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Ocean | 94 min |
| 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, 8:21 AM EDT | Severe Thunderstorm Warning | PHI | Monroe | 24 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.