Alert archive / Delaware / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 170, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2025, 7:28 PM EDT for Sussex County, Delaware. It was in force for 47 min. 1 report 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
- Jul 8, 2025, 7:28 PM EDT (23:28 UTC)
- Expired
- Jul 8, 2025, 8:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 23:30 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 |
|---|---|---|---|
| Jul 8, 7:35 PM EDT | HAIL 0.5 | Dagsboro, DE | Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 8, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.5 hours before the alert went out and 66 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
- 1900 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 1010 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
128
WUUS51 KPHI 082328
SVRPHI
DEC005-090015-
/O.NEW.KPHI.SV.W.0170.250708T2328Z-250709T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
728 PM EDT Tue Jul 8 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 728 PM EDT, a severe thunderstorm was located over Dagsboro, or
13 miles southeast of Georgetown, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Millsboro, Selbyville, Dagsboro, Millville, Gumboro, Long Neck,
Ocean View, Frankford, South Bethany, and Dewey Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3845 7538 3846 7542 3859 7537 3871 7506
3846 7504 3845 7505
TIME...MOT...LOC 2328Z 252DEG 18KT 3853 7525
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann3 follow-up statements
261
WWUS51 KPHI 082341
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
741 PM EDT Tue Jul 8 2025
DEC005-090015-
/O.CON.KPHI.SV.W.0170.000000T0000Z-250709T0015Z/
Sussex DE-
741 PM EDT Tue Jul 8 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 741 PM EDT, a severe thunderstorm was located over Dagsboro, or 13
miles southeast of Georgetown, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Selbyville, Dagsboro, Millville, Long Neck, Ocean View, Frankford,
South Bethany, and Dewey Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3846 7530 3851 7533 3864 7521 3871 7506
3846 7504 3845 7505
TIME...MOT...LOC 2341Z 241DEG 14KT 3855 7521
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann102
WWUS51 KPHI 082357
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
757 PM EDT Tue Jul 8 2025
DEC005-090015-
/O.CON.KPHI.SV.W.0170.000000T0000Z-250709T0015Z/
Sussex DE-
757 PM EDT Tue Jul 8 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...
At 757 PM EDT, a severe thunderstorm was located near Millville, or
15 miles north of Ocean City, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Millville, Long Neck, Ocean View, and South Bethany.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3848 7516 3852 7521 3865 7516 3869 7506
3846 7504
TIME...MOT...LOC 2357Z 260DEG 22KT 3858 7507
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann683
WWUS51 KPHI 090007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
807 PM EDT Tue Jul 8 2025
DEC005-090017-
/O.EXP.KPHI.SV.W.0170.000000T0000Z-250709T0015Z/
Sussex DE-
807 PM EDT Tue Jul 8 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SUSSEX COUNTY
WILL EXPIRE AT 815 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has moved offshore. Therefore, the warning will be
allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern Delaware.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3848 7516 3852 7521 3865 7516 3869 7506
3846 7504
TIME...MOT...LOC 0007Z 252DEG 18KT 3859 7502
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 10:59 PM EDT | Flood Watch | PHI | Kent, New Castle, Sussex | 23 hr |
| Jul 8, 5:31 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Jul 8, 5:45 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Jul 8, 5:45 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 60 min |
| Jul 8, 6:54 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 66 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.