Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 192, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 10, 2009, 7:12 PM EDT for Sussex County, New Jersey. It was in force for 48 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
- Aug 10, 2009, 7:12 PM EDT (23:12 UTC)
- Expired
- Aug 10, 2009, 8:00 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 145 km from the middle of the area, began a volume at 23:13 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 |
|---|---|---|---|
| Aug 10, 5:09 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.2 hours before the alert went out and 153 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
- 196 J/kg
- Mixed-layer CIN
- -298 J/kg
- Mixed-layer LCL
- 882 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 102312
SVRPHI
NJC037-110000-
/O.NEW.KPHI.SV.W.0192.090810T2312Z-090811T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
712 PM EDT MON AUG 10 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 800 PM EDT
* AT 710 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HIGH POINT...OR 6 MILES EAST OF MONTAGUE...AND MOVING EAST AT 20
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
8 MILES NORTH OF VERNON VALLEY AROUND 735 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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND NORTHEASTERN
PENNSYLVANIA.
&&
LAT...LON 4121 7439 4120 7437 4118 7437 4116 7441
4116 7470 4120 7487 4128 7484 4130 7480
4132 7479 4134 7475 4135 7468
TIME...MOT...LOC 2311Z 253DEG 15KT 4131 7467
$$1 follow-up statement
000
WWUS51 KPHI 102338
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
738 PM EDT MON AUG 10 2009
NJC037-110000-
/O.CON.KPHI.SV.W.0192.000000T0000Z-090811T0000Z/
SUSSEX NJ-
738 PM EDT MON AUG 10 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHERN SUSSEX COUNTY...
AT 736 PM EDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
SEVERE THUNDERSTORMS ALONG THE NEW JERSEY - NEW YORK BORDER BETWEEN
HIGH POINT AND VERNON VALLEY CAPABLE OF PRODUCING NICKEL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH. ONE STORM WAS LOCATED 7
MILES EAST OF HIGH POINT...OR 13 MILES EAST OF MONTAGUE...MOVING
EAST AT 15 TO 20 MPH. OTHER THUNDERSTORMS MAY FORM INTO
NORTHWESTERN PORTIONS OF SUSSEX COUNTY FROM PIKE COUNTY
PENNSYLVANIA THROUGH 8:00 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND NORTHEASTERN
PENNSYLVANIA.
&&
LAT...LON 4121 7439 4120 7437 4118 7437 4116 7441
4116 7470 4120 7487 4128 7484 4130 7480
4132 7479 4134 7475 4135 7468
TIME...MOT...LOC 2336Z 253DEG 15KT 4134 7454
$$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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.