Alert archive / New Jersey / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 166, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2024, 4:32 PM EDT for New Castle County, Delaware; Gloucester County, Salem County, New Jersey; Chester County, Delaware County, Pennsylvania. It was in force for 24 min. 3 reports 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 2, 2024, 4:32 PM EDT (20:32 UTC)
- Expired
- Aug 2, 2024, 4:56 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA
The radar
The Dover AFB radar (KDOX), 107 km from the middle of the area, began a volume at 20:35 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 2, 4:36 PM EDT | TSTM WND DMG | Talleyville, DE | Trees and wires down around Talleyville, DE, most likely from the outflow. Time estimated from radar. |
| Aug 2, 4:40 PM EDT | TSTM WND DMG | Hockessin, DE | Report of trees and wires down around Hockessin, DE. Time estimated from radar. |
| Aug 2, 4:44 PM EDT | TSTM WND GST 47 | New Castle County Airpo, DE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 2, 4:07 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.5 hours before the alert went out and 175 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
- 433 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1251 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
265
WUUS51 KPHI 022032
SVRPHI
DEC003-NJC015-033-PAC029-045-022115-
/O.NEW.KPHI.SV.W.0166.240802T2032Z-240802T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
432 PM EDT Fri Aug 2 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern New Castle County in northern Delaware...
Northwestern Salem County in southern New Jersey...
Northwestern Gloucester County in southern New Jersey...
South central Chester County in southeastern Pennsylvania...
Southwestern Delaware County in southeastern Pennsylvania...
* Until 515 PM EDT.
* At 432 PM EDT, a severe thunderstorm was located over Landenberg,
or 8 miles north of Newark, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Wilmington, Newark, Chester, Pennsville, Carneys Point, Swarthmore,
Elsmere, Kennett Square, New Castle, Penns Grove, Newport, Arden,
Stanton, Talleyville, Elam, Chelsea, Greenville, Landenberg,
Chester Township, and Hockessin.
This includes the following highways...
New Jersey Turnpike near exit 1.
Interstate 95 in Pennsylvania between mile markers 0 and 6.
Interstate 95 in Delaware between mile markers 7 and 23.
Interstate 295 in New Jersey between mile markers 0 and 10.
Interstate 476 in Pennsylvania between mile markers 0 and 2.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3988 7578 3990 7534 3963 7537 3969 7579
3972 7579 3972 7581
TIME...MOT...LOC 2032Z 274DEG 19KT 3979 7580
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich1 follow-up statement
062
WWUS51 KPHI 022056
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
456 PM EDT Fri Aug 2 2024
DEC003-NJC015-033-PAC029-045-022105-
/O.CAN.KPHI.SV.W.0166.000000T0000Z-240802T2115Z/
New Castle DE-Salem NJ-Gloucester NJ-Chester PA-Delaware PA-
456 PM EDT Fri Aug 2 2024
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN NEW CASTLE...
NORTHWESTERN SALEM...NORTHWESTERN GLOUCESTER...SOUTH CENTRAL CHESTER
AND SOUTHWESTERN DELAWARE COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern Delaware...southern New Jersey...and southeastern
Pennsylvania.
LAT...LON 3988 7578 3990 7534 3963 7537 3969 7579
3972 7579 3972 7581
TIME...MOT...LOC 2050Z 274DEG 19KT 3978 7564
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 4:17 AM EDT | Excessive Heat Warning | PHI | Kent, New Castle, Sussex | 16 hr |
| Aug 2, 5:05 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 40 min |
| Aug 2, 3:27 PM EDT | Small Craft Advisory | PHI | 36 hr | |
| Aug 2, 4:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 2, 5:51 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer | 39 min |
| Aug 2, 6:19 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 39 min |
| Aug 2, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 83 min |
| Aug 2, 6:30 PM EDT | Special Marine Warning | PHI | 66 min | |
| Aug 2, 6:38 PM EDT | Special Marine Warning | PHI | 83 min | |
| Aug 2, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh | 52 min |
| Aug 2, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 45 min |
| Aug 2, 3:08 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
| Aug 2, 3:44 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 61 min |
| Aug 2, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 42 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2024Severe Thunderstorm Warnings in Pennsylvania, 2024Severe Thunderstorm Warnings in Delaware, 2024Every severe thunderstorm warning in 2024
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.