Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 102, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2025, 6:52 PM EDT for Sussex County, Delaware. It was in force for 38 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, 6:52 PM EDT (22:52 UTC)
- Expired
- Jun 29, 2025, 7:30 PM EDT
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 22:55 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 12:00Z, 10.9 hours before the alert went out and 67 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
- 2444 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 829 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
926
WUUS51 KPHI 292252
SVRPHI
DEC005-292330-
/O.NEW.KPHI.SV.W.0102.250629T2252Z-250629T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
652 PM EDT Sun Jun 29 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Sussex County in southern Delaware...
* Until 730 PM EDT.
* At 651 PM EDT, a severe thunderstorm was located near Laurel, or
12 miles north of Salisbury, and is nearly stationary. This storm
has a history of producing a 58 mph wind gusts and wind damage in
Bethel.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Laurel and Bethel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3846 7569 3849 7570 3857 7570 3859 7555
3846 7548
TIME...MOT...LOC 2251Z 357DEG 3KT 3854 7563
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
277
WWUS51 KPHI 292303
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
703 PM EDT Sun Jun 29 2025
DEC005-292330-
/O.CON.KPHI.SV.W.0102.000000T0000Z-250629T2330Z/
Sussex DE-
703 PM EDT Sun Jun 29 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHWESTERN SUSSEX COUNTY...
At 703 PM EDT, a severe thunderstorm was located near Sharptown, or
9 miles northwest of Salisbury, moving south at 5 mph. This storm
has a history of producing a 58 mph wind gusts and wind damage in
Bethel.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Laurel.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3846 7569 3849 7570 3855 7570 3857 7554
3846 7548
TIME...MOT...LOC 2303Z 013DEG 6KT 3850 7566
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann916
WWUS51 KPHI 292322
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
722 PM EDT Sun Jun 29 2025
DEC005-292332-
/O.EXP.KPHI.SV.W.0102.000000T0000Z-250629T2330Z/
Sussex DE-
722 PM EDT Sun Jun 29 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SUSSEX COUNTY
WILL EXPIRE AT 730 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3846 7569 3849 7570 3855 7570 3857 7554
3846 7548
TIME...MOT...LOC 2322Z 357DEG 3KT 3849 7566
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 2:21 AM EDT | Severe Thunderstorm Warning | PHI | Kent | 26 min |
| 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 |
Nearby
Severe Thunderstorm Warnings in Delaware, 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.