Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 62, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 10, 2008, 8:16 PM EDT for Burlington County, Camden County, New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 41 min. 5 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 10, 2008, 8:16 PM EDT (00:16 UTC)
- Expired
- Jun 10, 2008, 8:57 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 53 km from the middle of the area, began a volume at 00:16 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 10, 8:20 PM EDT | TSTM WND DMG | Jenkintown, PA | POWER LINES DOWN IN JENKINTOWN AND ABINGTON. |
| Jun 10, 8:25 PM EDT | TSTM WND DMG | Jenkintown, PA | POWER LINES DOWN IN JENKINTOWN AND ABINGTON. |
| Jun 10, 8:27 PM EDT | TSTM WND DMG | Northeast Philadelphia, PA | 54 MPH WIND GUST MEASURED AT NORTHEAST PHILADELPHIA AIRPORT AND TREES DOWN WITHIN THE CITY. |
| Jun 10, 8:27 PM EDT | TSTM WND GST 54 | Northeast Philadelphia, PA | 54 MPH WIND GUST MEASURED AT NORTHEAST PHILADELPHIA AIRPORT. |
| Jun 10, 8:33 PM EDT | HAIL 1 | Feasterville-Trevose, PA | QUARTER SIZE HAIL BETWEEN FEASTERVILLE AND BENSALEM ON THE PENNSYLVANIA TURNPIKE AT MILE MARKER 347.3 WEST. |
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 |
|---|---|---|---|
| Jun 10, 5:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.3 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
- 447 J/kg
- Mixed-layer CIN
- -263 J/kg
- Mixed-layer LCL
- 1846 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 110017
SVRPHI
NJC005-007-PAC017-091-101-110115-
/O.NEW.KPHI.SV.W.0062.080611T0016Z-080611T0115Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
816 PM EDT TUE JUN 10 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 915 PM EDT
* AT 812 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR CHESTNUT
HILL...OR ABOUT 6 MILES WEST OF PHILADELPHIA...AND MOVING EAST AT
35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
ROCKLEDGE...HOLMESBURG...TACONY AND WISSINOMING BY 830 PM...
NORTHEAST PHILADELPHIA AND HOLMESBURG BY 835 PM...
ANDALUSIA...FEASTERVILLE AND RIVERSIDE BY 840 PM...
BENSALEM BY 845 PM...
THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM WEDNESDAY
MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.
LAT...LON 4025 7485 4015 7473 4007 7463 3992 7506
3989 7517 3986 7524 3997 7525 4008 7537
TIME...MOT...LOC 0016Z 254DEG 30KT 4005 7520
$$
GORSE2 follow-up statements
000
WWUS51 KPHI 110039
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
837 PM EDT TUE JUN 10 2008
NJC005-007-PAC017-091-101-110115-
/O.CON.KPHI.SV.W.0062.000000T0000Z-080611T0115Z/
CAMDEN NJ-PHILADELPHIA PA-MONTGOMERY PA-BUCKS PA-BURLINGTON NJ-
837 PM EDT TUE JUN 10 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHWESTERN BURLINGTON...SOUTHEASTERN BUCKS...SOUTHEASTERN
MONTGOMERY...NORTHEASTERN PHILADELPHIA AND NORTHWESTERN CAMDEN
COUNTIES...
AT 834 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A NARROW LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
PENNY SIZE HAIL...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS
LOCATED NEAR NORTHEAST PHILADELPHIA...OR 9 MILES NORTHEAST OF
PHILADELPHIA...MOVING EAST AT 34 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CROYDON...HULMEVILLE...PENNDEL AND LANGHORNE MANOR BY 845 PM EDT...
BRISTOL...LEVITTOWN...BURLINGTON AND FAIRLESS HILLS BY 850 PM
EDT...
TULLYTOWN AND FLORENCE BY 855 PM EDT...
AT 827 PM...A 54 MPH WIND GUST WAS MEASURED AT THE NORTHEAST
PHILADELPHIA AIRPORT.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4007 7463 3992 7506 3991 7512 4000 7515
4014 7517 4025 7485
TIME...MOT...LOC 0037Z 254DEG 30KT 4010 7498
$$
GORSE000
WWUS51 KPHI 110057
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
856 PM EDT TUE JUN 10 2008
NJC005-007-PAC017-091-101-110105-
/O.CAN.KPHI.SV.W.0062.000000T0000Z-080611T0115Z/
CAMDEN NJ-PHILADELPHIA PA-MONTGOMERY PA-BUCKS PA-BURLINGTON NJ-
856 PM EDT TUE JUN 10 2008
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BURLINGTON...
SOUTHEASTERN BUCKS...SOUTHEASTERN MONTGOMERY...NORTHEASTERN
PHILADELPHIA AND NORTHWESTERN CAMDEN COUNTIES IS CANCELLED...
THE NARROW LINE OF STRONG TO SEVERE THUNDERSTORMS HAS WEAKENED AND
IS MOVING OUT OF THE AREA. AS A RESULT, THE WARNING HAS BEEN
CANCELLED.
ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE
AREA DURING THE REMAINDER OF THE EVENING HOURS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4007 7463 3992 7506 3991 7512 4000 7515
4014 7517 4025 7485
TIME...MOT...LOC 0055Z 254DEG 30KT 4014 7479
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:05 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 55 min |
| Jun 10, 8:11 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Morris, Somerset | 64 min |
| Jun 11, 12:33 AM EDT | Special Marine Warning | PHI | 42 min | |
| Jun 11, 1:59 AM EDT | Special Marine Warning | PHI | 46 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2008Severe Thunderstorm Warnings in New Jersey, 2008Every severe thunderstorm warning in 2008
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.