Alert archive / Delaware / Tornado Warnings in 2025
Tornado Warning 18, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at May 30, 2025, 10:55 PM EDT for New Castle County, Delaware. It was in force for 22 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
- May 30, 2025, 10:55 PM EDT (02:55 UTC)
- Expired
- May 30, 2025, 11:17 PM EDT
- In force
- 22 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 95 km from the middle of the area, began a volume at 02:59 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 30, 5:01 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.9 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
- 926 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 804 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.5
The text
As transmitted.
538
WFUS51 KPHI 310255
TORPHI
DEC003-310330-
/O.NEW.KPHI.TO.W.0018.250531T0255Z-250531T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
1055 PM EDT Fri May 30 2025
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
West central New Castle County in northern Delaware...
* Until 1130 PM EDT.
* At 1055 PM EDT, a severe thunderstorm capable of producing a
tornado was located over Bohemias Mills, or near Middletown, moving
north at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Newark, Glasgow, Bear, and Brookside.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3971 7578 3967 7563 3946 7577 3967 7579
TIME...MOT...LOC 0255Z 198DEG 24KT 3949 7580
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
RCM2 follow-up statements
714
WWUS51 KPHI 310311
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1111 PM EDT Fri May 30 2025
DEC003-310330-
/O.CON.KPHI.TO.W.0018.000000T0000Z-250531T0330Z/
New Castle DE-
1111 PM EDT Fri May 30 2025
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR WEST
CENTRAL NEW CASTLE COUNTY...
At 1110 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Glasgow, or near Elkton, moving north at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Newark, Glasgow, Bear, and Brookside.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3971 7578 3967 7563 3954 7576 3967 7579
TIME...MOT...LOC 0310Z 198DEG 24KT 3959 7576
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
RCM054 WWUS51 KPHI 310317 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 1117 PM EDT Fri May 30 2025 DEC003-310327- /O.CAN.KPHI.TO.W.0018.000000T0000Z-250531T0330Z/ New Castle DE- 1117 PM EDT Fri May 30 2025 ...THE TORNADO WARNING FOR WEST CENTRAL NEW CASTLE COUNTY IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer appears capable of producing a tornado. Therefore, the warning has been cancelled. However gusty winds and heavy rain are still possible with this thunderstorm. A Tornado Watch remains in effect until midnight EDT for northern Delaware. LAT...LON 3971 7578 3967 7563 3954 7576 3967 7579 TIME...MOT...LOC 0315Z 198DEG 24KT 3964 7574 $$ RCM
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 9:04 PM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 10 hr |
| May 30, 10:26 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| May 30, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 49 min |
| May 31, 1:17 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 43 min |
| May 31, 1:30 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 45 min |
| May 31, 1:42 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 48 min |
| May 31, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 45 min |
| May 31, 2:26 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 49 min |
Nearby
Tornado Warnings in Delaware, 2025Every tornado warning in 2025Tornadoes 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.