Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 79, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2013, 5:18 PM EDT for Burlington County, New Jersey. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2013, 5:18 PM EDT (21:18 UTC)
- Expired
- Jul 21, 2013, 6:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Burlington County, NJ
The radar
The Philadelphia radar (KDIX), 22 km from the middle of the area, began a volume at 21:18 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.3 hours before the alert went out and 187 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
- 34 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 1245 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -1.1
The text
As transmitted, in the capitals the NWS used until 2016.
842 WUUS51 KPHI 212118 SVRPHI NJC005-212215- /O.NEW.KPHI.SV.W.0079.130721T2118Z-130721T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 518 PM EDT SUN JUL 21 2013 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 615 PM EDT * AT 514 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THE STORM WAS NEAR TABERNACLE...MOVING SOUTHEAST AT 5 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SHAMONG AROUND 530 PM EDT... CHATSWORTH AROUND 610 PM EDT... WHARTON STATE FOREST AROUND 615 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH. VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. IF YOU SEE THREATENING WEATHER, PLEASE MOVE INDOORS QUICKLY. && LAT...LON 3978 7440 3965 7464 3983 7479 3992 7461 TIME...MOT...LOC 2117Z 315DEG 6KT 3982 7469 $$ TFG
2 follow-up statements
022 WWUS51 KPHI 212135 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 535 PM EDT SUN JUL 21 2013 NJC005-212215- /O.CON.KPHI.SV.W.0079.000000T0000Z-130721T2215Z/ BURLINGTON NJ- 535 PM EDT SUN JUL 21 2013 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR CENTRAL BURLINGTON COUNTY... AT 531 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR SHAMONG...MOVING SOUTHEAST AT 10 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... WHARTON STATE FOREST AND CHATSWORTH AROUND 555 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 3979 7474 3987 7457 3978 7440 3965 7464 TIME...MOT...LOC 2135Z 310DEG 9KT 3979 7464 $$ TFG
560 WWUS51 KPHI 212208 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 608 PM EDT SUN JUL 21 2013 NJC005-212217- /O.EXP.KPHI.SV.W.0079.000000T0000Z-130721T2215Z/ BURLINGTON NJ- 608 PM EDT SUN JUL 21 2013 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BURLINGTON COUNTY WILL EXPIRE AT 615 PM EDT... THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. THE STORM IS WEAKENING AND NO LONGER LOOKS TO POSE A SEVERE THREAT. LAT...LON 3979 7474 3987 7457 3978 7440 3965 7464 TIME...MOT...LOC 2207Z 310DEG 9KT 3974 7456 $$ TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 8:33 PM EDT | Special Weather Statement | PHI | Camden | 57 min |
| Jul 20, 8:39 PM EDT | Special Weather Statement | PHI | Camden | 66 min |
| Jul 20, 8:49 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 56 min |
| Jul 20, 9:13 PM EDT | Special Weather Statement | PHI | Ocean | 32 min |
| Jul 20, 9:38 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 67 min |
| Jul 20, 9:51 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 54 min |
| Jul 20, 9:59 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 61 min |
| Jul 20, 10:07 PM EDT | Special Marine Warning | PHI | 83 min | |
| Jul 20, 10:46 PM EDT | Special Weather Statement | PHI | Burlington | 59 min |
| Jul 20, 10:52 PM EDT | Special Weather Statement | PHI | Atlantic | 53 min |
| Jul 20, 11:10 PM EDT | Special Marine Warning | PHI | 95 min | |
| Jul 21, 3:10 PM EDT | Special Weather Statement | PHI | Ocean | 65 min |
| Jul 21, 3:17 PM EDT | Coastal Flood Advisory | PHI | Middlesex, Monmouth, Ocean | 6 hr |
| Jul 21, 3:44 PM EDT | Special Weather Statement | PHI | Camden, Gloucester, Salem | 2 hr |
| Jul 21, 4:16 PM EDT | Special Weather Statement | PHI | Burlington | 89 min |
| Jul 21, 4:20 PM EDT | Areal Flood Advisory | PHI | Burlington | 3 hr |
| Jul 21, 4:44 PM EDT | Special Weather Statement | PHI | Burlington | 61 min |
| Jul 21, 5:03 PM EDT | Areal Flood Advisory | PHI | Burlington | 3 hr |
| Jul 21, 5:28 PM EDT | Areal Flood Advisory | PHI | Burlington | 3 hr |
| Jul 21, 5:52 PM EDT | Special Weather Statement | PHI | Ocean | 53 min |
| Jul 21, 6:20 PM EDT | Special Weather Statement | PHI | Atlantic | 55 min |
| Jul 21, 6:33 PM EDT | Areal Flood Advisory | PHI | Burlington, Ocean | 3 hr |
| Jul 21, 7:02 PM EDT | Special Weather Statement | PHI | Atlantic | 88 min |
| Jul 21, 7:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Jul 21, 7:25 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington | 3 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2013Every severe thunderstorm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.