Alert archive / Delaware / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 29, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 1, 2026, 11:46 PM EDT for Sussex County, Delaware. It was in force for 14 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
- Apr 1, 2026, 11:46 PM EDT (03:46 UTC)
- Expired
- Apr 2, 2026, 12:00 AM EDT
- In force
- 14 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), 26 km from the middle of the area, began a volume at 03:50 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, 3.8 hours before the alert went out and 196 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
- 101 J/kg
- Mixed-layer CIN
- -140 J/kg
- Mixed-layer LCL
- 1754 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
981
WUUS51 KPHI 020346
SVRPHI
DEC005-020400-
/O.NEW.KPHI.SV.W.0029.260402T0346Z-260402T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1146 PM EDT Wed Apr 1 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
East central Sussex County in southern Delaware...
* Until midnight EDT.
* At 1145 PM EDT, a severe thunderstorm was located over Lewes, or 12
miles east of Georgetown, moving east at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Lewes, Henlopen Acres, Cape Henlopen State Park, and Dewey Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3870 7525 3877 7526 3882 7508 3876 7506
3868 7505
TIME...MOT...LOC 0345Z 259DEG 23KT 3875 7518
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL1 follow-up statement
552
WWUS51 KPHI 020359 RRA
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1159 PM EDT Wed Apr 1 2026
DEC005-020409-
/O.EXP.KPHI.SV.W.0029.000000T0000Z-260402T0400Z/
Sussex DE-
1159 PM EDT Wed Apr 1 2026
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SUSSEX COUNTY
WILL EXPIRE AT MIDNIGHT EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3870 7525 3877 7526 3882 7508 3876 7506
3868 7505
TIME...MOT...LOC 0359Z 259DEG 23KT 3876 7509
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 11:24 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 36 min |
| Apr 1, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 33 min |
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.