Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 177, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2025, 3:14 PM EDT for New Castle County, Delaware. It was in force for 31 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 14, 2025, 3:14 PM EDT (19:14 UTC)
- Expired
- Jul 14, 2025, 3:45 PM EDT
- In force
- 31 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 81 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 161 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
- 732 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 636 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
874
WUUS51 KPHI 141914
SVRPHI
DEC003-141945-
/O.NEW.KPHI.SV.W.0177.250714T1914Z-250714T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
314 PM EDT Mon Jul 14 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central New Castle County in northern Delaware...
* Until 345 PM EDT.
* At 314 PM EDT, a severe thunderstorm was located over Mount
Pleasant, or near Middletown, moving east at 5 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Middletown, New Castle, Delaware City, Saint Georges, Port Penn,
Mount Pleasant, Glasgow, Bear, and Odessa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3943 7576 3964 7578 3967 7558 3946 7554
TIME...MOT...LOC 1914Z 252DEG 5KT 3954 7572
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
PO2 follow-up statements
683
WWUS51 KPHI 141934
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
334 PM EDT Mon Jul 14 2025
DEC003-141945-
/O.CON.KPHI.SV.W.0177.000000T0000Z-250714T1945Z/
New Castle DE-
334 PM EDT Mon Jul 14 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR WEST CENTRAL NEW CASTLE COUNTY...
At 334 PM EDT, a severe thunderstorm was located over Saint Georges,
or near Middletown, moving east at 5 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Middletown, New Castle, Delaware City, Saint Georges, Port Penn,
Mount Pleasant, Bear, and Glasgow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3947 7575 3959 7575 3967 7558 3946 7554
TIME...MOT...LOC 1934Z 252DEG 5KT 3955 7569
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SFJ181 WWUS51 KPHI 141946 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 346 PM EDT Mon Jul 14 2025 DEC003-141956- /O.EXP.KPHI.SV.W.0177.000000T0000Z-250714T1945Z/ New Castle DE- 346 PM EDT Mon Jul 14 2025 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL NEW CASTLE COUNTY HAS EXPIRED... 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 allowed to expire. However gusty winds are still possible with this thunderstorm. LAT...LON 3947 7575 3959 7575 3967 7558 3946 7554 TIME...MOT...LOC 1946Z 252DEG 5KT 3955 7567 $$ SFJ
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 3:33 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Jul 14, 4:34 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
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.