Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 85, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2025, 7:48 PM EDT for Sussex County, Delaware. It was in force for 27 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
- Jun 19, 2025, 7:48 PM EDT (23:48 UTC)
- Expired
- Jun 19, 2025, 8:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 52 km from the middle of the area, began a volume at 23:51 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 |
|---|---|---|---|
| Jun 19, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.8 hours before the alert went out and 71 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
- 710 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1250 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.8
The text
As transmitted.
586
WUUS51 KPHI 192348
SVRPHI
DEC005-200015-
/O.NEW.KPHI.SV.W.0085.250619T2348Z-250620T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
748 PM EDT Thu Jun 19 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Sussex County in southern Delaware...
* Until 815 PM EDT.
* At 748 PM EDT, severe thunderstorms were located along a line
extending from near Dagsboro to near Ocean City to 17 miles
southeast of Newark, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Selbyville, Dagsboro, Millville, Ocean View, Frankford, and South
Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3845 7503 3846 7505 3845 7505 3845 7530
3851 7537 3864 7485 3863 7484 3846 7483
3845 7483
TIME...MOT...LOC 2348Z 257DEG 46KT 3851 7525 3835 7499 3808 7505
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL2 follow-up statements
032
WWUS51 KPHI 200002
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
802 PM EDT Thu Jun 19 2025
DEC005-200015-
/O.CON.KPHI.SV.W.0085.000000T0000Z-250620T0015Z/
Sussex DE-
802 PM EDT Thu Jun 19 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 801 PM EDT, severe thunderstorms were located along a line
extending from near Millville to 14 miles east of Ocean City to 20
miles southeast of Cape Isle Of Wight, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Millville, Ocean View, and South Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3855 7514 3859 7506 3864 7485 3863 7484
3845 7483 3845 7502 3846 7505 3845 7505
3845 7509
TIME...MOT...LOC 0001Z 252DEG 45KT 3856 7506 3839 7481 3813 7487
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL426
WWUS51 KPHI 200005
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
805 PM EDT Thu Jun 19 2025
DEC005-200015-
/O.EXP.KPHI.SV.W.0085.000000T0000Z-250620T0015Z/
Sussex DE-
805 PM EDT Thu Jun 19 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SUSSEX COUNTY
WILL EXPIRE AT 815 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern Delaware.
LAT...LON 3855 7514 3859 7506 3864 7485 3863 7484
3845 7483 3845 7502 3846 7505 3845 7505
3845 7509
TIME...MOT...LOC 0005Z 270DEG 46KT 3857 7502 3840 7477 3814 7483
$$
AKLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 4:34 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 41 min |
| Jun 19, 5:02 PM EDT | Tornado Warning | PHI | New Castle | 15 min |
| Jun 19, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 52 min |
| Jun 19, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 47 min |
| Jun 19, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 38 min |
| Jun 19, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 52 min |
| Jun 19, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 49 min |
| Jun 19, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 39 min |
| Jun 19, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 46 min |
| Jun 19, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 50 min |
| Jun 19, 6:58 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 47 min |
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.