Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 99, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2025, 2:21 AM EDT for Kent County, Delaware; Caroline County, Maryland. It was in force for 26 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
- Jun 29, 2025, 2:21 AM EDT (06:21 UTC)
- Expired
- Jun 29, 2025, 2:47 AM EDT
- In force
- 26 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 25 km from the middle of the area, began a volume at 06:23 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 6.4 hours before the alert went out and 112 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
- 2197 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 826 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
637
WUUS51 KPHI 290621
SVRPHI
DEC001-MDC011-290700-
/O.NEW.KPHI.SV.W.0099.250629T0621Z-250629T0700Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
221 AM EDT Sun Jun 29 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Kent County in central Delaware...
East central Caroline County in eastern Maryland...
* Until 300 AM EDT.
* At 220 AM EDT, a severe thunderstorm was located near Greensboro,
or 16 miles southeast of Centerville, moving east at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Denton, Harrington, Greensboro, Andrewsville, Felton, and
Farmington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3889 7584 3897 7584 3903 7557 3884 7556
3884 7562
TIME...MOT...LOC 0620Z 270DEG 13KT 3893 7579
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL1 follow-up statement
866
WWUS51 KPHI 290647
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
247 AM EDT Sun Jun 29 2025
DEC001-MDC011-290657-
/O.CAN.KPHI.SV.W.0099.000000T0000Z-250629T0700Z/
Kent DE-Caroline MD-
247 AM EDT Sun Jun 29 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KENT AND EAST
CENTRAL CAROLINE COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 3889 7584 3897 7584 3903 7557 3884 7556
3884 7562
TIME...MOT...LOC 0644Z 270DEG 13KT 3893 7566
$$
AKLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 4:12 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
| Jun 29, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 39 min |
| Jun 29, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 38 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.