Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 53, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 9, 2009, 8:00 AM EDT for Delaware County, Philadelphia County, Pennsylvania; 4 counties in New Jersey. It was in force for 60 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 9, 2009, 8:00 AM EDT (12:00 UTC)
- Expired
- Jun 9, 2009, 9:00 AM EDT
- In force
- 60 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 12:00 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 9, 8:25 AM EDT | HAIL 0.25 | Mount Ephraim, NJ | PEA SIZE HAIL REPORTED IN MOUNT EPHRAIM. |
| Jun 9, 8:35 AM EDT | HAIL 0.25 | Glassboro, NJ | PEA SIZE HAIL REPORTED IN THE GLASSBORO AREA. |
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, 0.0 hours before the alert went out and 94 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
- 1272 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 091200 SVRPHI NJC005-007-015-033-PAC045-101-091300- /O.NEW.KPHI.SV.W.0053.090609T1200Z-090609T1300Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 800 AM EDT TUE JUN 9 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA... SOUTHWESTERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA... WEST CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... WESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY... GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY... NORTH CENTRAL SALEM COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 900 AM EDT * AT 758 AM 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 CHESTER...OR 10 MILES NORTHEAST OF WILMINGTON...AND MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GIBBSTOWN AND PHILADELPHIA INTERNATIONAL AIRPORT AROUND 810 AM EDT... MULLICA HILL AROUND 820 AM EDT... WOODBURY AROUND 825 AM EDT... BELLMAWR AROUND 830 AM EDT... TURNERSVILLE AND MAGNOLIA AROUND 840 AM EDT... LINDENWOLD AROUND 845 AM 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 NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3991 7488 3963 7492 3971 7543 3991 7540 TIME...MOT...LOC 1159Z 276DEG 22KT 3981 7536 $$ KRUZDLO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 4:17 AM EDT | Dense Fog Advisory | PHI | 5 hr | |
| Jun 9, 5:38 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 67 min |
| Jun 9, 7:20 AM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 55 min |
| Jun 9, 8:06 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 54 min |
| Jun 9, 8:20 AM EDT | Areal Flood Advisory | PHI | Delaware, Montgomery, Philadelphia | 3 hr |
| Jun 9, 8:42 AM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Jun 9, 9:56 AM EDT | Flash Flood Warning | PHI | Chester | 105 min |
| Jun 9, 1:49 PM EDT | Flash Flood Watch | PHI | Delaware, Philadelphia | 5 hr |
| Jun 9, 2:20 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 3 hr |
| Jun 9, 2:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 66 min |
| Jun 9, 2:59 PM EDT | Tornado Warning | PHI | Chester | 32 min |
| Jun 9, 3:08 PM EDT | Tornado Warning | PHI | Chester | 28 min |
| Jun 9, 3:14 PM EDT | Tornado Warning | PHI | Chester | 46 min |
| Jun 9, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 61 min |
| Jun 9, 12:48 AM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 42 min |
| Jun 9, 2:20 AM EDT | Areal Flood Advisory | PHI | Morris | 100 min |
| Jun 9, 8:30 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 60 min |
| Jun 9, 8:43 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 62 min |
| Jun 9, 8:47 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 70 min |
| Jun 9, 9:09 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 3 hr |
| Jun 9, 9:21 AM EDT | Special Marine Warning | PHI | 54 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2009Severe Thunderstorm Warnings in Pennsylvania, 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.