Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 213, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 2025, 4:32 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Maryland. It was in force for 21 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
- Jul 31, 2025, 4:32 PM EDT (20:32 UTC)
- Expired
- Jul 31, 2025, 4:53 PM EDT
- In force
- 21 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 16 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 31, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 8.5 hours before the alert went out and 110 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
- 1642 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 785 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
810
WUUS51 KPHI 312032
SVRPHI
DEC001-005-MDC011-312115-
/O.NEW.KPHI.SV.W.0213.250731T2032Z-250731T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
432 PM EDT Thu Jul 31 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Sussex County in southern Delaware...
Southern Kent County in central Delaware...
East central Caroline County in eastern Maryland...
* Until 515 PM EDT.
* At 432 PM EDT, a severe thunderstorm was located near Andrewsville,
or 19 miles southwest of Dover, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Milford, Harrington, Greensboro, Bowers, Big Stone Beach,
Andrewsville, Felton, Frederica, Houston, Farmington, and
Riverview.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3882 7576 3896 7583 3910 7537 3886 7524
TIME...MOT...LOC 2032Z 250DEG 28KT 3892 7571
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL1 follow-up statement
741 WWUS51 KPHI 312053 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 453 PM EDT Thu Jul 31 2025 DEC001-005-MDC011-312103- /O.CAN.KPHI.SV.W.0213.000000T0000Z-250731T2115Z/ Sussex DE-Kent DE-Caroline MD- 453 PM EDT Thu Jul 31 2025 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SUSSEX...SOUTHERN KENT AND EAST CENTRAL CAROLINE COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However heavy rain is still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 800 PM EDT for central and southern Delaware...and eastern Maryland. LAT...LON 3882 7576 3896 7583 3910 7537 3886 7524 TIME...MOT...LOC 2051Z 250DEG 28KT 3898 7551 $$ MJL
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 3:56 AM EDT | Rip Current Statement | PHI | Sussex | 4 days |
| Jul 31, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 40 min |
| Jul 31, 2:09 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Jul 31, 2:46 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Jul 31, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 50 min |
| Jul 31, 3:09 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 21 min |
| Jul 31, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 46 min |
| Jul 31, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 49 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2025Severe Thunderstorm Warnings in Maryland, 2025Every severe thunderstorm warning in 2025
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.