Alert archive / New Jersey / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 117, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 17, 2003, 4:12 PM EDT for Hunterdon County, Somerset County, New Jersey. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 17, 2003, 4:12 PM EDT (20:12 UTC)
- Expired
- Aug 17, 2003, 5:15 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Hunterdon County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 20:15 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
Albany, NY (KALY), launched 12:00Z, 8.2 hours before the alert went out and 249 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
- 137 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 768 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
864
WUUS51 KPHI 172012
SVRPHI
NJC019-035-172115-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
411 PM EDT SUN AUG 17 2003
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN SOMERSET COUNTY
EASTERN HUNTERDON COUNTY
* UNTIL 515 PM EDT.
* AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM... 2 MILES WEST OF WHITE HOUSE STATION...MOVING
SOUTHEAST AT 15 MPH. THIS STORM LOOKS STRONGER ON RADAR THAN IT
WAS IN WARREN COUNTY WHERE IT DOWNED TREES AND WIRES IN LIBERTY
TOWNSHIP. THIS IS A DANGEROUS LIFE THREATENING STORM. WHOLE
TREES ARE LIKELY TO BE KNOCKED DOWN.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
FLEMINGTON AT 420 PM.
MANVILLE AT 440 PM.
MILLSTONE AT 445 PM.
HAIL THE SIZE OF GOLFBALLS OR LARGER...AND WINDS GREATER THAN 65
MILES AN HOUR...ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A
STURDY STRUCTURE UNTIL THE STORM HAS PASSED.
FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.
$$
LAT...LON 4045 7448 4037 7470 4042 7478 4040 7481
4061 7496 4071 7483The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:23 PM EDT | Special Marine Warning | PHI | 97 min | |
| Aug 17, 2:35 PM EDT | Special Marine Warning | PHI | 85 min | |
| Aug 17, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 46 min |
| Aug 17, 3:46 PM EDT | Special Marine Warning | PHI | 89 min | |
| Aug 17, 4:40 PM EDT | Severe Thunderstorm Warning | PHI | Mercer | 50 min |
| Aug 17, 5:32 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth | 43 min |
| Aug 17, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 62 min |
| Aug 17, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 61 min |
| Aug 17, 6:37 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 53 min |
| Aug 17, 7:15 PM EDT | Special Marine Warning | PHI | 2 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2003Every severe thunderstorm warning in 2003
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.