Alert archive / Maryland / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 55, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 30, 2025, 10:26 PM EDT for Kent County, Queen Anne's County, Maryland; New Castle County, Delaware. It was in force for 49 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, 10:26 PM EDT (02:26 UTC)
- Expired
- May 30, 2025, 11:15 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 02:25 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, 2.4 hours before the alert went out and 144 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.
998
WUUS51 KPHI 310226
SVRPHI
DEC003-MDC029-035-310315-
/O.NEW.KPHI.SV.W.0055.250531T0226Z-250531T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1026 PM EDT Fri May 30 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern New Castle County in northern Delaware...
Northeastern Queen Anne's County in northeastern Maryland...
Northeastern Kent County in northeastern Maryland...
* Until 1115 PM EDT.
* At 1026 PM EDT, a severe thunderstorm was located over Massey, or
12 miles southwest of Middletown, moving north at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Newark, Middletown, Delaware City, Millington, Saint Georges,
Sassafras, Mount Pleasant, Glasgow, Bear, Delaney Corner, Massey,
Crumpton, Townsend, Galena, Odessa, and Brookside.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight EDT for central and
northern Delaware...and northeastern Maryland.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
A Tornado Watch remains in effect until midnight EDT for central and
northern Delaware...and northeastern Maryland.
&&
LAT...LON 3937 7597 3936 7588 3937 7588 3937 7585
3938 7582 3938 7577 3968 7579 3963 7558
3930 7573 3929 7576 3926 7575 3920 7578
3925 7600
TIME...MOT...LOC 0226Z 195DEG 32KT 3931 7587
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM2 follow-up statements
026
WWUS51 KPHI 310243
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1043 PM EDT Fri May 30 2025
MDC029-035-310253-
/O.CAN.KPHI.SV.W.0055.000000T0000Z-250531T0315Z/
Queen Anne's MD-Kent MD-
1043 PM EDT Fri May 30 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN QUEEN ANNE'S AND
NORTHEASTERN KENT COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until midnight EDT for northern
Delaware...and northeastern Maryland.
LAT...LON 3968 7579 3963 7558 3932 7572 3936 7576
3938 7577
TIME...MOT...LOC 0243Z 195DEG 31KT 3943 7580
$$
DEC003-310315-
/O.CON.KPHI.SV.W.0055.000000T0000Z-250531T0315Z/
New Castle DE-
1043 PM EDT Fri May 30 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHWESTERN NEW CASTLE COUNTY...
At 1043 PM EDT, a severe thunderstorm was located over Warwick, or
near Middletown, moving north at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Newark, Middletown, Delaware City, Saint Georges, Mount Pleasant,
Glasgow, Bear, Townsend, Odessa, and Brookside.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight EDT for northern
Delaware...and northeastern Maryland.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 3968 7579 3963 7558 3932 7572 3936 7576
3938 7577
TIME...MOT...LOC 0243Z 195DEG 31KT 3943 7580
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM155
WWUS51 KPHI 310315
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1115 PM EDT Fri May 30 2025
DEC003-310324-
/O.EXP.KPHI.SV.W.0055.000000T0000Z-250531T0315Z/
New Castle DE-
1115 PM EDT Fri May 30 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEW CASTLE COUNTY
WILL EXPIRE AT 1115 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until midnight EDT for northern
Delaware...and northeastern Maryland.
Remember, a Tornado Warning still remains in effect for parts of New
Castle County until 1130 PM.
LAT...LON 3968 7579 3963 7558 3932 7572 3936 7576
3938 7577
TIME...MOT...LOC 0314Z 195DEG 32KT 3969 7571
$$
RCMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:57 PM EDT | Tornado Warning | PHI | Kent, Queen Anne's | 33 min |
| May 30, 9:04 PM EDT | Wind Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 10 hr |
| May 30, 9:33 PM EDT | Tornado Warning | PHI | Kent, Queen Anne's | 27 min |
| May 31, 1:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 min |
| May 31, 1:30 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 45 min |
| May 31, 1:42 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 48 min |
| May 31, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 45 min |
| May 30, 10:26 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| May 30, 10:55 PM EDT | Tornado Warning | PHI | New Castle | 22 min |
| May 31, 2:26 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 49 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2025Severe 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.