Alert archive / Delaware / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 237, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2026, 4:56 PM EDT for Kent County, Sussex County, Delaware. It was in force for 20 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
- Jul 27, 2026, 4:56 PM EDT (20:56 UTC)
- Expired
- Jul 27, 2026, 5:16 PM EDT
- In force
- 20 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE
The radar
The Dover AFB radar (KDOX), 10 km from the middle of the area, began a volume at 20:55 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 162 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
- 87 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
184
WUUS51 KPHI 272056
SVRPHI
DEC001-005-272145-
/O.NEW.KPHI.SV.W.0237.260727T2056Z-260727T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
456 PM EDT Mon Jul 27 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Sussex County in southern Delaware...
South central Kent County in central Delaware...
* Until 545 PM EDT.
* At 455 PM EDT, a severe thunderstorm was located over Bridgeville,
or 10 miles northwest of Georgetown, moving northwest at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Bridgeville and Greenwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3875 7541 3866 7566 3885 7572 3887 7550
TIME...MOT...LOC 2055Z 153DEG 9KT 3875 7556
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Guzzo1 follow-up statement
108 WWUS51 KPHI 272116 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 516 PM EDT Mon Jul 27 2026 DEC001-005-272126- /O.CAN.KPHI.SV.W.0237.000000T0000Z-260727T2145Z/ Sussex DE-Kent DE- 516 PM EDT Mon Jul 27 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SUSSEX AND SOUTH CENTRAL KENT COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. LAT...LON 3875 7541 3866 7566 3885 7572 3887 7550 TIME...MOT...LOC 2113Z 153DEG 9KT 3880 7559 $$ Guzzo
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:15 PM EDT | Flood Watch | PHI | New Castle | 38 hr |
| Jul 27, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 44 min |
| Jul 27, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 46 min |
| Jul 27, 5:22 PM EDT | Flash Flood Warning | PHI | Sussex | 2 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.