Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 8, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 31, 2025, 8:56 PM EDT for Kent County, New Castle County, Sussex County, Delaware; Caroline County, Kent County, Queen Anne's County, Maryland; Cumberland County, Gloucester County, Salem County, New Jersey. It was in force for 49 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 31, 2025, 8:56 PM EDT (00:56 UTC)
- Expired
- Mar 31, 2025, 9:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 00:56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 31, 9:12 PM EDT | TSTM WND DMG | Clayton, DE | Wires down. |
| Mar 31, 9:15 PM EDT | TSTM WND DMG | 1 Nnw Delaney Corner, DE | Downed trees and powerlines. Time estimated from radar. |
| Mar 31, 9:15 PM EDT | TSTM WND DMG | Townsend, DE | Downed trees and powerlines. Time estimated from radar. |
| Mar 31, 9:16 PM EDT | TSTM WND GST 59 | 1 N Smyrna, DE | Smyrna WxFlow site. |
| Mar 31, 9:42 PM EDT | TSTM WND DMG | 2 Wsw Fairton, NJ | Wires down. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.9 hours before the alert went out and 150 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
- 9 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 664 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -107 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
878
WUUS51 KPHI 010056
SVRPHI
DEC001-003-005-MDC011-029-035-NJC011-015-033-010145-
/O.NEW.KPHI.SV.W.0008.250401T0056Z-250401T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
856 PM EDT Mon Mar 31 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
North central Sussex County in southern Delaware...
Southwestern New Castle County in northern Delaware...
Kent County in central Delaware...
Queen Anne's County in northeastern Maryland...
Northeastern Caroline County in eastern Maryland...
Northeastern Kent County in northeastern Maryland...
Western Cumberland County in southern New Jersey...
Salem County in southern New Jersey...
Southeastern Gloucester County in southern New Jersey...
* Until 945 PM EDT.
* At 856 PM EDT, severe thunderstorms were located along a line
extending from Hollywood Beach to near Centreville, moving east at
40 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...
Hartly, Greensboro, Barclay, Wyoming, Starr, Oakland, Odessa,
Bowers, Hazlettville, Newport Meadows, Highland Acres, Morgnec,
Delaney Corner, Crumpton, Dover Speedway, Sandtown, Viola,
Cheswold, Camden, and Kenton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3937 7596 3936 7588 3938 7577 3958 7578
3964 7499 3890 7533 3896 7615
TIME...MOT...LOC 0056Z 269DEG 37KT 3950 7589 3903 7611
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM3 follow-up statements
861
WWUS51 KPHI 010114
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
914 PM EDT Mon Mar 31 2025
DEC001-003-005-MDC011-029-035-NJC011-015-033-010145-
/O.CON.KPHI.SV.W.0008.000000T0000Z-250401T0145Z/
Sussex DE-New Castle DE-Kent DE-Queen Anne's MD-Caroline MD-Kent MD-
Cumberland NJ-Salem NJ-Gloucester NJ-
914 PM EDT Mon Mar 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR NORTHERN SUSSEX...SOUTHWESTERN NEW CASTLE...KENT...NORTHEASTERN
QUEEN ANNE'S...NORTHEASTERN CAROLINE...EASTERN KENT...WESTERN
CUMBERLAND...SALEM AND SOUTHEASTERN GLOUCESTER COUNTIES...
At 914 PM EDT, severe thunderstorms were located along a line
extending from Saint Georges to near Hazlettville, moving east at 45
mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Hartly, Wyoming, Odessa, Bowers, Hazlettville, Newport Meadows,
Highland Acres, Delaney Corner, Dover Speedway, Viola, Cheswold,
Camden, Kenton, Saint Georges, Rodney Village, Mount Pleasant, Green
Spring, Magnolia, Riverview, and Malaga.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3906 7579 3933 7581 3938 7577 3958 7578
3964 7499 3890 7533
TIME...MOT...LOC 0114Z 265DEG 38KT 3955 7562 3911 7571
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM918
WWUS51 KPHI 010134 RRA
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
934 PM EDT Mon Mar 31 2025
DEC005-MDC011-029-035-010144-
/O.CAN.KPHI.SV.W.0008.000000T0000Z-250401T0145Z/
Sussex DE-Queen Anne's MD-Caroline MD-Kent MD-
934 PM EDT Mon Mar 31 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SUSSEX...NORTHEASTERN
QUEEN ANNE'S...NORTHEASTERN CAROLINE AND EASTERN KENT COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3959 7562 3964 7499 3915 7524 3913 7560
3932 7556 3941 7563
TIME...MOT...LOC 0134Z 269DEG 37KT 3955 7543 3911 7552
$$
DEC001-003-NJC011-015-033-010145-
/O.CON.KPHI.SV.W.0008.000000T0000Z-250401T0145Z/
New Castle DE-Kent DE-Cumberland NJ-Salem NJ-Gloucester NJ-
934 PM EDT Mon Mar 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTH CENTRAL NEW CASTLE...NORTHEASTERN KENT...WESTERN
CUMBERLAND...SALEM AND SOUTHEASTERN GLOUCESTER COUNTIES...
At 934 PM EDT, severe thunderstorms were located along a line
extending from Quinton to Rising Sun, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Newport, Franklinville, Alloway, Woodland Beach, Elmer, Hancocks
Bridge, Newport Meadows, Port Penn, Bridgeton, Salem, Centerton,
Dover Speedway, Leipsic, Chambersville, Dover, Olivet, Malaga,
Greenwich, Delaware City, and Quinton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3959 7562 3964 7499 3915 7524 3913 7560
3932 7556 3941 7563
TIME...MOT...LOC 0134Z 269DEG 37KT 3955 7543 3911 7552
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM477
WWUS51 KPHI 010144
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
944 PM EDT Mon Mar 31 2025
DEC001-003-NJC011-015-033-010154-
/O.EXP.KPHI.SV.W.0008.000000T0000Z-250401T0145Z/
New Castle DE-Kent DE-Cumberland NJ-Salem NJ-Gloucester NJ-
944 PM EDT Mon Mar 31 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NEW CASTLE...
NORTHEASTERN KENT...WESTERN CUMBERLAND...SALEM AND SOUTHEASTERN
GLOUCESTER COUNTIES WILL EXPIRE AT 945 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 3959 7562 3964 7499 3915 7524 3913 7560
3932 7556 3941 7563
TIME...MOT...LOC 0144Z 269DEG 37KT 3955 7535 3911 7544
$$
RCMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 9:13 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 47 min |
| Mar 31, 9:48 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 42 min |
| Mar 31, 10:03 PM EDT | Tornado Warning | PHI | Sussex | 27 min |
| Mar 31, 10:22 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 38 min |
| Mar 31, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer, Middlesex, Monmouth, Ocean | 52 min |
| Mar 31, 8:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Mar 31, 9:23 PM EDT | Tornado Warning | PHI | Middlesex, Monmouth | 19 min |
| Mar 31, 9:47 PM EDT | Special Marine Warning | PHI | 118 min | |
| Apr 1, 2:14 AM EDT | Special Marine Warning | PHI | 2 hr |
Nearby
Severe Thunderstorm Warnings in Delaware, 2025Severe Thunderstorm Warnings in Maryland, 2025Severe Thunderstorm Warnings in New Jersey, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.