Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 84, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2025, 6:58 PM EDT for Sussex County, Delaware. It was in force for 47 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, 6:58 PM EDT (22:58 UTC)
- Expired
- Jun 19, 2025, 7:45 PM EDT
- In force
- 47 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), 28 km from the middle of the area, began a volume at 22:57 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, 11.0 hours before the alert went out and 72 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.
100
WUUS51 KPHI 192258
SVRPHI
DEC005-192345-
/O.NEW.KPHI.SV.W.0084.250619T2258Z-250619T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
658 PM EDT Thu Jun 19 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Sussex County in southern Delaware...
* Until 745 PM EDT.
* At 658 PM EDT, a severe thunderstorm was located over Sycamore, or
9 miles southwest of Georgetown, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Georgetown, Seaford, Millsboro, Laurel, Dagsboro, Millville,
Sycamore, Long Neck, Ocean View, Blades, and Frankford.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3849 7558 3865 7560 3874 7512 3850 7509
TIME...MOT...LOC 2258Z 259DEG 28KT 3858 7548
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL3 follow-up statements
207
WWUS51 KPHI 192308
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
708 PM EDT Thu Jun 19 2025
DEC005-192345-
/O.CON.KPHI.SV.W.0084.000000T0000Z-250619T2345Z/
Sussex DE-
708 PM EDT Thu Jun 19 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 708 PM EDT, a severe thunderstorm was located near Millsboro, or
near Georgetown, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Georgetown, Millsboro, Dagsboro, Millville, Long Neck, and Ocean
View.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3868 7546 3874 7512 3854 7509 3853 7544
TIME...MOT...LOC 2308Z 252DEG 35KT 3862 7534
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL883
WWUS51 KPHI 192321
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
721 PM EDT Thu Jun 19 2025
DEC005-192345-
/O.CON.KPHI.SV.W.0084.000000T0000Z-250619T2345Z/
Sussex DE-
721 PM EDT Thu Jun 19 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR EAST CENTRAL SUSSEX COUNTY...
At 721 PM EDT, a severe thunderstorm was located near Henlopen Acres,
or 11 miles east of Georgetown, moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Millsboro and Long Neck.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3857 7530 3870 7534 3874 7512 3857 7509
TIME...MOT...LOC 2321Z 254DEG 36KT 3866 7518
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
AKL096 WWUS51 KPHI 192338 RRA SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 738 PM EDT Thu Jun 19 2025 DEC005-192348- /O.EXP.KPHI.SV.W.0084.000000T0000Z-250619T2345Z/ Sussex DE- 738 PM EDT Thu Jun 19 2025 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SUSSEX COUNTY WILL EXPIRE AT 745 PM EDT... The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning will be allowed to expire. A Severe Thunderstorm Watch remains in effect until 900 PM EDT for southern Delaware. LAT...LON 3857 7530 3870 7534 3874 7512 3857 7509 TIME...MOT...LOC 2338Z 259DEG 28KT 3868 7506 $$ AKL
The 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, 7:48 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 27 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.