Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 23, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 9, 2009, 7:13 PM EDT for Cape May County, New Jersey. It was in force for 22 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
- May 9, 2009, 7:13 PM EDT (23:13 UTC)
- Expired
- May 9, 2009, 7:35 PM EDT
- In force
- 22 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Cape May County, NJ
The radar
The Dover AFB radar (KDOX), 51 km from the middle of the area, began a volume at 23:15 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.2 hours before the alert went out and 126 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
- 288 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 092313
SVRPHI
NJC009-100000-
/O.NEW.KPHI.SV.W.0023.090509T2313Z-090510T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
713 PM EDT SAT MAY 9 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF CAPE MAY...
* UNTIL 800 PM EDT
* AT 712 PM 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 7 MILES
SOUTHWEST OF NORTH CAPE MAY...OR 8 MILES SOUTHWEST OF CAPE MAY...
AND MOVING EAST AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
NORTH CAPE MAY BY 720 PM EDT...
CAPE MAY AND NORTH CAPE MAY BY 725 PM EDT...
7 MILES SOUTH OF RIO GRANDE AND 9 MILES SOUTH OF GREEN CREEK BY 730
PM EDT...
WILDWOOD CREST AND WILDWOOD BY 735 PM EDT...
NORTH WILDWOOD AND 9 MILES SOUTH OF SCOTCH BONNET BY 740 PM EDT...
8 MILES SOUTH OF STONE HARBOR BY 745 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 NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT SUNDAY
MORNING FOR SOUTHERN DELAWARE AND EASTERN MARYLAND.
&&
LAT...LON 3892 7498 3899 7498 3903 7496 3906 7493
3908 7472 3905 7474 3902 7479 3899 7479
3895 7484 3892 7495 3892 7497
TIME...MOT...LOC 2313Z 259DEG 28KT 3890 7503
$$
MPD1 follow-up statement
000
WWUS51 KPHI 092335
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
735 PM EDT SAT MAY 9 2009
NJC009-092344-
/O.CAN.KPHI.SV.W.0023.000000T0000Z-090510T0000Z/
CAPE MAY NJ-
735 PM EDT SAT MAY 9 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CAPE MAY COUNTY
IS CANCELLED...
THUNDERSTORMS HAVE MOVED OFF THE COAST...AND THE SEVERE THUNDERSTORM
WARNING THEREFORE IS CANCELLED.
LAT...LON 3892 7498 3899 7498 3903 7496 3906 7493
3908 7472 3905 7474 3902 7479 3899 7479
3895 7484 3892 7495 3892 7497
TIME...MOT...LOC 2334Z 259DEG 28KT 3893 7483
$$
MPDThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:00 PM EDT | Special Marine Warning | PHI | 60 min | |
| May 9, 7:23 PM EDT | Special Marine Warning | PHI | 67 min | |
| May 9, 7:33 PM EDT | Special Marine Warning | PHI | 27 min | |
| May 9, 7:46 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.