Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 5, 2008, 2:55 AM EST for Bucks County, Philadelphia County, Pennsylvania; Burlington County, Camden County, New Jersey. It was in force for 40 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
- Mar 5, 2008, 2:55 AM EST (07:55 UTC)
- Expired
- Mar 5, 2008, 3:35 AM EST
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Bucks County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 07:55 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 |
|---|---|---|---|
| Mar 5, 3:08 AM EST | TSTM WND GST 52 | Philadelphia, PA | A 52 MPH WIND GUST WAS MEASURED AT THE NORTHEAST PHILADELPHIA AIRPORT IN ASSOCIATION WITH A FAST MOVING SQUALL LINE. |
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 |
|---|---|---|---|
| Mar 5, 1:04 AM EST | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 7.9 hours before the alert went out and 210 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 516 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 281 m²/s²
- 0-3 km storm-relative helicity
- 288 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 050755
SVRPHI
NJC005-007-PAC017-101-050900-
/O.NEW.KPHI.SV.W.0007.080305T0755Z-080305T0900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
255 AM EST WED MAR 5 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
THIS INCLUDES THE CITY OF PHILADELPHIA...
NORTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF CAMDEN...
* UNTIL 400 AM EST
* AT 251 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR CAMDEN...AND
MOVING NORTHEAST AT 65 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
RIVERSIDE...ANDALUSIA...TACONY AND HOLMESBURG BY 300 AM EST...
WILLINGBORO...BRISTOL...BEVERLY AND BENSALEM BY 305 AM EST...
FLORENCE AND LEVITTOWN BY 310 AM EST...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EST
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY AND SOUTHEAST PENNSYLVANIA.
LAT...LON 3969 7495 3970 7498 3981 7509 3985 7510
3988 7515 3998 7524 4005 7513 4005 7512
4009 7508 4024 7485 3994 7448
TIME...MOT...LOC 0755Z 233DEG 60KT 3996 7504
$$
NIERENBERG1 follow-up statement
000
WWUS51 KPHI 050835
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
334 AM EST WED MAR 5 2008
NJC005-007-PAC017-101-050844-
/O.CAN.KPHI.SV.W.0007.000000T0000Z-080305T0900Z/
CAMDEN NJ-PHILADELPHIA PA-BUCKS PA-BURLINGTON NJ-
334 AM EST WED MAR 5 2008
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BURLINGTON...
SOUTHEASTERN BUCKS...PHILADELPHIA AND CAMDEN COUNTIES IS CANCELLED...
THE THUNDERSTORMS HAVE EITHER WEAKENED OR MOVED OUT OF THE AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM EST
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY AND SOUTHEAST PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH
ALSO REMAINS IN EFFECT UNTIL 600 AM EST WEDNESDAY MORNING FOR
DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND SOUTHEAST
PENNSYLVANIA.
LAT...LON 3969 7495 3970 7498 3981 7509 3985 7510
3988 7515 3998 7524 4005 7513 4005 7512
4009 7508 4024 7485 3994 7448
TIME...MOT...LOC 0834Z 233DEG 60KT 4035 7436
$$
NIERENBERGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 8:55 AM EST | River Flood Warning | PHI | Berks | 12 hr |
| Mar 5, 9:54 AM EST | River Flood Warning | PHI | Lehigh, Northampton | 11 hr |
| Mar 5, 1:59 AM EST | Special Marine Warning | PHI | 61 min | |
| Mar 5, 3:22 AM EST | Severe Thunderstorm Warning | PHI | Ocean | 53 min |
| Mar 5, 9:07 AM EST | Special Marine Warning | PHI | 83 min | |
| Mar 5, 4:53 PM EST | River Flood Warning | PHI | Morris | 22 hr |
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.