Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 177, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 4, 2007, 4:04 PM EDT for Atlantic County, New Jersey. It was in force for 41 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 4, 2007, 4:04 PM EDT (20:04 UTC)
- Expired
- Aug 4, 2007, 4:45 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Atlantic County, NJ
The radar
The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 20:07 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 4, 4:25 PM EDT | HAIL 0.75 | Brigantine, NJ | A TRAINED NATIONAL WEATHER SERVICE SPOTTER REPORTED ONE-HALF TO THREE-QUARTER INCH SIZE HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.1 hours before the alert went out and 181 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
- 1751 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1018 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 64 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 042004 SVRPHI NJC001-042045- /O.NEW.KPHI.SV.W.0177.070804T2004Z-070804T2045Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 404 PM EDT SAT AUG 4 2007 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY... THIS INCLUDES THE CITY OF ATLANTIC CITY... * UNTIL 445 PM EDT * AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS STORM WAS LOCATED NEAR ATLANTIC CITY...AND MOVING SOUTH AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... VENTNOR CITY BY 415 PM EDT... LONGPORT BY 425 PM EDT... PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. IN ADDITION TO 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. LAT...LON 3942 7431 3947 7447 3930 7457 3925 7448 $$ NIERENBERG
1 follow-up statement
000 WWUS51 KPHI 042033 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 432 PM EDT SAT AUG 4 2007 NJC001-042045- /O.CON.KPHI.SV.W.0177.000000T0000Z-070804T2045Z/ ATLANTIC NJ- 432 PM EDT SAT AUG 4 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR SOUTHEASTERN ATLANTIC COUNTY... AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS STORM WAS LOCATED NEAR VENTNOR CITY...OR ABOUT NEAR ATLANTIC CITY...MOVING SOUTH AT 10 MPH. THIS IS A SECOND STORM WHICH IS MOVING THROUGH THE AREA. IN ADDITION TO HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. PENNY SIZED HAIL UP HAS BEEN REPORTED IN BRIGANTINE WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...MOVE INDOORS IMMEDIATELY. LAT...LON 3943 7423 3949 7443 3930 7457 3925 7448 $$ NIERENBERG
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, 9:59 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 46 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 |
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.