Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 158, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2009, 6:42 PM EDT for Atlantic County, Burlington County, Camden County, New Jersey. It was in force for 39 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 29, 2009, 6:42 PM EDT (22:42 UTC)
- Expired
- Jul 29, 2009, 7:21 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ
The radar
The Philadelphia radar (KDIX), 26 km from the middle of the area, began a volume at 22:43 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 29, 6:55 PM EDT | TSTM WND DMG | Tabernacle, NJ | NUMEROUS BRANCHES DOWN WITH ROAD CLOSURES. |
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 |
|---|---|---|---|
| Jul 29, 12:49 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 128 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
- 1577 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 745 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 292242 SVRPHI NJC001-005-007-292345- /O.NEW.KPHI.SV.W.0158.090729T2242Z-090729T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 642 PM EDT WED JUL 29 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY... BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 745 PM EDT * AT 639 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR HAMMONTON...OR 14 MILES NORTHEAST OF VINELAND...AND MOVING NORTHEAST AT 35 MPH. WINDS OF 57 MPH WERE REPORTED IN VINELAND NEW JERSEY WITH SMALL HAIL AND TORRENTIAL RAINS. * THE SEVERE THUNDERSTORM WILL BE NEAR... ATSION...SHAMONG AND WHARTON STATE FOREST AROUND 650 PM EDT... CHATSWORTH...TABERNACLE AND 7 MILES SOUTHEAST OF LEISURETOWNE AROUND 655 PM EDT... PRESIDENTIAL LAKES AROUND 700 PM EDT... BROWNS MILLS AROUND 705 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 4010 7468 3980 7441 3956 7471 3977 7501 TIME...MOT...LOC 2241Z 220DEG 62KT 3964 7481 $$ EBERWINE
2 follow-up statements
000 WWUS51 KPHI 292301 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 701 PM EDT WED JUL 29 2009 NJC001-007-292311- /O.CAN.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/ CAMDEN NJ-ATLANTIC NJ- 701 PM EDT WED JUL 29 2009 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ATLANTIC AND SOUTHEASTERN CAMDEN COUNTIES IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN PENNSYLVANIA. LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459 TIME...MOT...LOC 2301Z 220DEG 62KT 3990 7452 $$ NJC005-292345- /O.CON.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/ BURLINGTON NJ- 701 PM EDT WED JUL 29 2009 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR BURLINGTON COUNTY... AT 701 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR PRESIDENTIAL LAKES...OR 18 MILES WEST OF TOMS RIVER...MOVING NORTHEAST AT 35 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN PENNSYLVANIA. && LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459 TIME...MOT...LOC 2301Z 220DEG 62KT 3990 7452 $$ EBERWINE
000 WWUS51 KPHI 292321 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 721 PM EDT WED JUL 29 2009 NJC005-292331- /O.CAN.KPHI.SV.W.0158.000000T0000Z-090729T2345Z/ BURLINGTON NJ- 721 PM EDT WED JUL 29 2009 ...THE SEVERE THUNDERSTORM WARNING FOR BURLINGTON COUNTY IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT WEDNESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN PENNSYLVANIA. LAT...LON 3988 7490 4010 7468 3980 7441 3966 7459 TIME...MOT...LOC 2321Z 220DEG 62KT 4016 7424 $$ EBERWINE-
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 10:15 AM EDT | Flash Flood Watch | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 17 hr |
| Jul 29, 12:55 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset | 65 min |
| Jul 29, 1:30 PM EDT | Areal Flood Advisory | PHI | Morris, Somerset | 3 hr |
| Jul 29, 1:35 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 55 min |
| Jul 29, 1:56 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 64 min |
| Jul 29, 2:10 PM EDT | Tornado Warning | PHI | Sussex | 65 min |
| Jul 29, 2:21 PM EDT | Areal Flood Advisory | PHI | Middlesex | 3 hr |
| Jul 29, 2:32 PM EDT | Flash Flood Warning | PHI | Sussex | 6 hr |
| Jul 29, 2:50 PM EDT | Flash Flood Warning | PHI | Middlesex | 4 hr |
| Jul 29, 3:52 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 4 hr |
| Jul 29, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer | 66 min |
| Jul 29, 5:48 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 29, 5:55 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Salem | 4 hr |
| Jul 29, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 26 min |
| Jul 29, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Gloucester | 38 min |
| Jul 29, 6:42 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more | 3 hr |
| Jul 29, 6:44 PM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 3 hr |
| Jul 29, 6:50 PM EDT | Areal Flood Advisory | PHI | Morris | 94 min |
| Jul 29, 7:31 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 30 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.