Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 67, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 7, 2013, 8:38 PM EDT for Morris County, New Jersey. It was in force for 52 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 7, 2013, 8:38 PM EDT (00:38 UTC)
- Expired
- Jul 7, 2013, 9:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Morris County, NJ
The radar
The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 00:39 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 7, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.6 hours before the alert went out and 136 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
- 1758 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
164
WUUS51 KPHI 080038
SVRPHI
NJC027-080130-
/O.NEW.KPHI.SV.W.0067.130708T0038Z-130708T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
838 PM EDT SUN JUL 7 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
* UNTIL 930 PM EDT
* AT 835 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
MENDHAM TO MILLINGTON...MOVING EAST AT 40 MPH. THESE STORMS ARE
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
MADISON AND FLORHAM PARK AROUND 845 PM EDT...
EAST HANOVER AND FLORHAM PARK AROUND 850 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
SUNDAY EVENING FOR NORTHEAST MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
&&
LAT...LON 4079 7436 4073 7437 4067 7445 4065 7452
4068 7453 4070 7451 4074 7455 4075 7455
4075 7462 4076 7464 4088 7433 4084 7432
TIME...MOT...LOC 0038Z 251DEG 34KT 4077 7451 4069 7448
$$
FORECASTER: DRAG2 follow-up statements
972
WWUS51 KPHI 080052
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
852 PM EDT SUN JUL 7 2013
NJC027-080130-
/O.CON.KPHI.SV.W.0067.000000T0000Z-130708T0130Z/
MORRIS NJ-
852 PM EDT SUN JUL 7 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN MORRIS COUNTY...
AT 847 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HANOVER TOWNSHIP TO FLORHAM PARK...MOVING EAST
NORTHEAST AT 35 MPH.
SEVERE THUNDERSTORMS WILL AFFECT...FLORHAM PARK AREA AND POSSIBLY
EAST HANOVER WITH POTENTIALLY DAMAGING WINDS.
THIS WARNING WILL LIKELY BE CANCELLED AROUND 910PM AS THE STORMS
RACE ON TO THE EAST OF MORRIS COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE FOR DAMAGING
WINDS...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING...AWAY FROM
WINDOWS OR EVEN BELOW GROUND LEVEL.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
SUNDAY EVENING FOR NORTHEAST MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.
&&
LAT...LON 4079 7436 4073 7437 4071 7443 4072 7446
4072 7448 4077 7452 4079 7456 4088 7433
4084 7432
TIME...MOT...LOC 0049Z 238DEG 32KT 4083 7442 4078 7437
$$
FORECASTER: DRAG566
WWUS51 KPHI 080102
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
902 PM EDT SUN JUL 7 2013
NJC027-080111-
/O.CAN.KPHI.SV.W.0067.000000T0000Z-130708T0130Z/
MORRIS NJ-
902 PM EDT SUN JUL 7 2013
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRIS COUNTY IS
CANCELLED...
THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 4079 7436 4073 7437 4071 7443 4072 7446
4072 7448 4077 7452 4079 7456 4088 7433
4084 7432
TIME...MOT...LOC 0101Z 238DEG 32KT 4089 7430 4084 7425
$$
FORECASTER: DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:05 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 40 min |
| Jul 7, 8:27 PM EDT | Special Weather Statement | PHI | Somerset | 48 min |
| Jul 8, 3:03 PM EDT | Special Weather Statement | PHI | Burlington | 57 min |
| Jul 8, 5:20 PM EDT | Special Weather Statement | PHI | Atlantic | 55 min |
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.