Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 65, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2025, 2:00 PM EDT for Sussex County, Delaware. It was in force for 45 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 13, 2025, 2:00 PM EDT (18:00 UTC)
- Expired
- Jun 13, 2025, 2:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 42 km from the middle of the area, began a volume at 17:59 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, 6.0 hours before the alert went out and 64 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
- 1136 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1088 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted.
207
WUUS51 KPHI 131800
SVRPHI
DEC005-131845-
/O.NEW.KPHI.SV.W.0065.250613T1800Z-250613T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
200 PM EDT Fri Jun 13 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Sussex County in southern Delaware...
* Until 245 PM EDT.
* At 159 PM EDT, a severe thunderstorm was located near Gumboro, or 9
miles south of Georgetown, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Millsboro, Selbyville, Dagsboro, Gumboro, and Frankford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3845 7543 3855 7552 3864 7538 3845 7498
3845 7503 3846 7505 3845 7505
TIME...MOT...LOC 1759Z 314DEG 12KT 3856 7539
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva3 follow-up statements
860
WWUS51 KPHI 131821
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
221 PM EDT Fri Jun 13 2025
DEC005-131845-
/O.CON.KPHI.SV.W.0065.000000T0000Z-250613T1845Z/
Sussex DE-
221 PM EDT Fri Jun 13 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 221 PM EDT, a severe thunderstorm was located over Gumboro, or 13
miles south of Georgetown, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Millsboro, Selbyville, Dagsboro, Gumboro, and Frankford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3845 7543 3849 7546 3853 7546 3858 7528
3845 7498 3845 7503 3846 7505 3845 7505
TIME...MOT...LOC 1821Z 317DEG 12KT 3850 7534
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva296
WWUS51 KPHI 131837
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
237 PM EDT Fri Jun 13 2025
DEC005-131845-
/O.CON.KPHI.SV.W.0065.000000T0000Z-250613T1845Z/
Sussex DE-
237 PM EDT Fri Jun 13 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR SOUTH CENTRAL SUSSEX COUNTY...
At 237 PM EDT, a severe thunderstorm was located near Selbyville, or
13 miles northwest of Ocean City, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Selbyville and Gumboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3845 7540 3850 7541 3852 7525 3845 7509
TIME...MOT...LOC 1837Z 314DEG 12KT 3846 7529
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DeSilva602 WWUS51 KPHI 131842 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 242 PM EDT Fri Jun 13 2025 DEC005-131851- /O.EXP.KPHI.SV.W.0065.000000T0000Z-250613T1845Z/ Sussex DE- 242 PM EDT Fri Jun 13 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SUSSEX COUNTY WILL EXPIRE AT 245 PM EDT... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. LAT...LON 3845 7540 3850 7541 3852 7525 3845 7509 TIME...MOT...LOC 1841Z 314DEG 12KT 3845 7528 $$ DeSilva
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.