Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 174, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2007, 9:59 PM EDT for Morris County, New Jersey. It was in force for 46 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 3, 2007, 9:59 PM EDT (01:59 UTC)
- Expired
- Aug 3, 2007, 10:45 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Morris County, NJ
The radar
The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 02:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 3, 10:45 PM EDT | HAIL 0.75 | 5 Ssw Succasunna-Kenvil, NJ | PENNY SIZE HAIL REPORTED IN CHESTER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 2.0 hours before the alert went out and 142 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
- 613 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 040200 SVRPHI NJC027-040245- /O.NEW.KPHI.SV.W.0174.070804T0159Z-070804T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1000 PM EDT FRI AUG 3 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MORRIS COUNTY IN NORTHERN NEW JERSEY... * UNTIL 1045 PM EDT * AT 955 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 NEAR DOVER...OR ABOUT 23 MILES WEST OF CLIFTON...AND MOVING SOUTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MORRISTOWN...PARSIPPANY AND 7 MILES SOUTHWEST OF BOONTON BY 1015 PM EDT... MADISON AND EAST HANOVER BY 1025 PM EDT... THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS LAT...LON 4096 7468 4078 7471 4070 7441 4090 7429 $$ RPW
1 follow-up statement
000 WWUS51 KPHI 040237 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1034 PM EDT FRI AUG 3 2007 NJC027-040245- /O.CON.KPHI.SV.W.0174.000000T0000Z-070804T0245Z/ MORRIS NJ- 1034 PM EDT FRI AUG 3 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR SOUTHERN MORRIS COUNTY... AT 1033 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A STRONG THUNDERSTORM NEAR MORRISTOWN...OR ABOUT 18 MILES WEST OF NEWARK...MOVING SOUTHEAST AT 20 MPH. WHILE THE INTENSITY TREND HAS BEEN DIMINISHING, THIS STORM MAY STILL PRODUCE SMALL HAIL AND GUSTY WINDS. THE SEVERE THUNDERSTORM WILL BE NEAR... HANOVER TOWNSHIP BY 1040 PM EDT... MADISON...FLORHAM PARK AND 6 MILES SOUTHWEST OF EAST HANOVER BY 1045 PM EDT... LAT...LON 4088 7455 4078 7471 4070 7441 4090 7429 $$ RPW
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 8:44 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 76 min |
| Aug 3, 9:03 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 57 min |
| Aug 3, 10:03 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 57 min |
| Aug 3, 11:07 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset | 53 min |
| Aug 4, 4:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 4, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic | 41 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2007Every severe thunderstorm warning in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.