Alert archive / New Jersey / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 38, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 11, 2001, 10:50 PM EDT for Burlington County, Camden County, New Jersey. It was in force for 40 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 11, 2001, 10:50 PM EDT (02:50 UTC)
- Expired
- Jun 11, 2001, 11:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Burlington County, NJ, Camden County, NJ
The radar
The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 02:56 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 11, 11:00 PM EDT | Hail 0.75 | Merchantville, NJ | |
| Jun 11, 11:00 PM EDT | Hail 0.75 | Maple Shade, NJ | |
| Jun 11, 11:15 PM EDT | Thunderstorm Wind 50 E | Mt Holly, NJ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 2.8 hours before the alert went out and 201 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
- 703 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 120250 SVRPHI NJC005-007-120330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1050 PM EDT MON JUN 11 2001 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY. CAMDEN COUNTY IN SOUTHERN NEW JERSEY. * UNTIL 1130 PM EDT. * AT 1045 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... 3 MILES WEST OF CAMDEN...MOVING EAST AT 40 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... WILLINGBORO... PALMYRA... MARLTON... LINDENWOLD... CHERRY HILL... CAMDEN... BERLIN... LARGE HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE LIKELY WITH THIS STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM HAS PASSED. $$ LAT...LON 3998 7513 3988 7514 3972 7489 4011 7475 IOVINO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 9:22 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 38 min |
| Jun 12, 12:15 AM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 45 min |
| Jun 12, 12:32 AM EDT | Tornado Warning | PHI | Cumberland | 28 min |
| Jun 12, 12:58 AM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 62 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.