Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 115, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2009, 6:55 PM EDT for 5 counties in New Jersey. It was in force for 65 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
- Jul 1, 2009, 6:55 PM EDT (22:55 UTC)
- Expired
- Jul 1, 2009, 8:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 31 km from the middle of the area, began a volume at 22:58 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 |
|---|---|---|---|
| Jul 1, 7:25 PM EDT | HAIL 0.5 | Cream Ridge, NJ | DIME SIZE HAIL REPORTED IN CREAM RIDGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.9 hours before the alert went out and 155 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
- 303 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1065 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 012255 SVRPHI NJC005-021-023-025-029-020000- /O.NEW.KPHI.SV.W.0115.090701T2255Z-090702T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 655 PM EDT WED JUL 1 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN MERCER COUNTY IN CENTRAL NEW JERSEY... SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY... SOUTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY... NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 800 PM EDT * AT 655 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WRIGHTSTOWN...OR 16 MILES SOUTHEAST OF TRENTON...AND MOVING NORTH AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GEORGETOWN AROUND 705 PM EDT... CREAM RIDGE AND CROSSWICKS AROUND 725 PM EDT... ALLENTOWN AROUND 730 PM EDT... IMLAYSTOWN AROUND 735 PM EDT... WINDSOR AND ROOSEVELT AROUND 745 PM EDT... EDINBURG AROUND 750 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES GREATEST KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4035 7461 4036 7432 3996 7452 4000 7472 TIME...MOT...LOC 2256Z 195DEG 15KT 4003 7461 $$ TFG
1 follow-up statement
000 WWUS51 KPHI 012332 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 732 PM EDT WED JUL 1 2009 NJC005-021-023-025-029-020000- /O.CON.KPHI.SV.W.0115.000000T0000Z-090702T0000Z/ MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-OCEAN NJ-BURLINGTON NJ- 732 PM EDT WED JUL 1 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR NORTH CENTRAL BURLINGTON...NORTHWESTERN OCEAN...SOUTHWESTERN MONMOUTH...SOUTHERN MIDDLESEX AND SOUTHEASTERN MERCER COUNTIES... AT 730 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ALLENTOWN...OR 9 MILES SOUTHEAST OF TRENTON...MOVING NORTH AT 15 MPH. DIME SIZE HAIL WAS REPORTED WITH THIS STORM IN CREAM RIDGE. ANOTHER SEVERE STORM WAS OVER MANSFIELD TOWNSHIP IN BURLINGTON COUNTY. THE SEVERE THUNDERSTORM WILL BE NEAR... 8 MILES WEST OF ROOSEVELT BY 740 PM EDT... WINDSOR BY 750 PM EDT... EDINBURG...HIGHTSTOWN AND 7 MILES WEST OF TWIN RIVERS BY 755 PM EDT... 9 MILES WEST OF CLEARBROOK PARK AND 9 MILES SOUTHWEST OF ROSSMOOR BY 800 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4035 7461 4036 7432 3996 7452 4000 7472 TIME...MOT...LOC 2331Z 174DEG 14KT 4017 7462 $$ TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 10:17 AM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 1, 10:34 AM EDT | Special Marine Warning | PHI | 56 min | |
| Jul 1, 1:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 1, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer | 55 min |
| Jul 1, 7:38 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 67 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2009Every severe thunderstorm warning in 2009
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.