Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 193, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 10, 2009, 8:08 PM EDT for Sussex County, New Jersey. It was in force for 37 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, 8:08 PM EDT (00:08 UTC)
- Expired
- Aug 10, 2009, 8:45 PM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 142 km from the middle of the area, began a volume at 00:09 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 00:00Z, 0.1 hours before the alert went out and 158 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
- 2227 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 110008
SVRPHI
NJC037-110045-
/O.NEW.KPHI.SV.W.0193.090811T0008Z-090811T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
808 PM EDT MON AUG 10 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 845 PM EDT
* AT 806 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HAINESVILLE...OR 7 MILES SOUTH OF MONTAGUE...AND MOVING EAST AT 20
TO 25 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
7 MILES SOUTH OF HIGH POINT AROUND 825 PM EDT...
SUSSEX...6 MILES NORTH OF HAMBURG AND 8 MILES NORTH OF FRANKLIN
AROUND 830 PM EDT...
VERNON VALLEY AROUND 840 PM EDT...
HIGHLAND LAKE AROUND 845 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 4120 7437 4118 7437 4108 7449 4107 7493
4108 7497 4120 7488 4122 7488 4127 7484
4132 7479 4135 7471 4135 7468
TIME...MOT...LOC 0007Z 259DEG 22KT 4120 7478
$$1 follow-up statement
000
WWUS51 KPHI 110032
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
832 PM EDT MON AUG 10 2009
NJC037-110045-
/O.CON.KPHI.SV.W.0193.000000T0000Z-090811T0045Z/
SUSSEX NJ-
832 PM EDT MON AUG 10 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR NORTHEASTERN SUSSEX COUNTY...
AT 832 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR SUSSEX...OR 12 MILES SOUTHEAST OF MONTAGUE...MOVING EAST
AT 20 TO 25 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
VERNON VALLEY BY 840 PM EDT...
HIGHLAND LAKE BY 845 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR NORTHWESTERN NEW JERSEY AND NORTHEASTERN
PENNSYLVANIA.
&&
LAT...LON 4110 7470 4113 7473 4122 7477 4125 7468
4132 7464 4120 7437 4118 7437 4108 7449
TIME...MOT...LOC 0032Z 259DEG 22KT 4123 7458
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 34 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.