Alert archive / Delaware / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 76, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2026, 10:20 PM EDT for Sussex County, Delaware. It was in force for 40 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 12, 2026, 10:20 PM EDT (02:20 UTC)
- Expired
- Jun 12, 2026, 11:00 PM EDT
- In force
- 40 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), 44 km from the middle of the area, began a volume at 02:19 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.3 hours before the alert went out and 204 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
- 488 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1249 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
929
WUUS51 KPHI 130220
SVRPHI
DEC005-130300-
/O.NEW.KPHI.SV.W.0076.260613T0220Z-260613T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1020 PM EDT Fri Jun 12 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Sussex County in southern Delaware...
* Until 1100 PM EDT.
* At 1020 PM EDT, a severe thunderstorm was located over Dagsboro, or
11 miles southeast of Georgetown, 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...
Millsboro, Dagsboro, Millville, Long Neck, Ocean View, Frankford,
and South Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3845 7501 3846 7505 3845 7505 3848 7518
3853 7538 3863 7537 3864 7504 3858 7504
3850 7502
TIME...MOT...LOC 0220Z 277DEG 16KT 3857 7524
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich3 follow-up statements
853
WWUS51 KPHI 130233
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1033 PM EDT Fri Jun 12 2026
DEC005-130300-
/O.CON.KPHI.SV.W.0076.000000T0000Z-260613T0300Z/
Sussex DE-
1033 PM EDT Fri Jun 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 1033 PM EDT, a severe thunderstorm was located near Millville, or
14 miles southeast of Georgetown, moving east at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dagsboro, Millville, Long Neck, Ocean View, Frankford, and South
Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3846 7508 3850 7527 3863 7524 3864 7504
3856 7504 3848 7501 3845 7502 3846 7504
3845 7506
TIME...MOT...LOC 0233Z 277DEG 16KT 3856 7517
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich959
WWUS51 KPHI 130247
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1047 PM EDT Fri Jun 12 2026
DEC005-130300-
/O.CON.KPHI.SV.W.0076.000000T0000Z-260613T0300Z/
Sussex DE-
1047 PM EDT Fri Jun 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 1047 PM EDT, a severe thunderstorm was located near Millville, or
10 miles north of Ocean City, 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...
Millville, Ocean View, and South Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3846 7503 3845 7507 3846 7509 3848 7520
3860 7518 3860 7504 3855 7504 3850 7501
3845 7502
TIME...MOT...LOC 0247Z 280DEG 16KT 3850 7511
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich424
WWUS51 KPHI 130300
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1100 PM EDT Fri Jun 12 2026
DEC005-130307-
/O.EXP.KPHI.SV.W.0076.000000T0000Z-260613T0300Z/
Sussex DE-
1100 PM EDT Fri Jun 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SUSSEX COUNTY
WILL EXPIRE AT 1100 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 3846 7503 3845 7507 3846 7509 3848 7520
3860 7518 3860 7504 3855 7504 3850 7501
3845 7502
TIME...MOT...LOC 0257Z 277DEG 16KT 3852 7508
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 2:49 AM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 21 hr |
Nearby
Severe Thunderstorm Warnings in Delaware, 2026Every severe thunderstorm warning in 2026
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.