Alert archive / Delaware / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 90, NWS Philadelphia/Mount Holly

June 26, 2025Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2025, 2:05 PM EDT for Sussex County, Delaware. It was in force for 40 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 26, 2025, 2:05 PM EDT (18:05 UTC)
Expired: Jun 26, 2025, 2:45 PM EDT
In force: 40 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), 48 km from the middle of the area, began a volume at 18:05 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.1 hours before the alert went out and 65 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1256 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1435 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

304 
WUUS51 KPHI 261805
SVRPHI
DEC005-261845-
/O.NEW.KPHI.SV.W.0090.250626T1805Z-250626T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
205 PM EDT Thu Jun 26 2025

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Sussex County in southern Delaware...

* Until 245 PM EDT.

* At 205 PM EDT, a severe thunderstorm was located near Selbyville,
  or 8 miles northwest of Ocean City, moving south at 10 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, 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 7529 3852 7528 3854 7505 3846 7502
      3845 7502 3845 7504 3846 7505 3845 7505
TIME...MOT...LOC 1805Z 355DEG 8KT 3846 7516 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DeSilva

2 follow-up statements

667 
WWUS51 KPHI 261824
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
224 PM EDT Thu Jun 26 2025

DEC005-261845-
/O.CON.KPHI.SV.W.0090.000000T0000Z-250626T1845Z/
Sussex DE-
224 PM EDT Thu Jun 26 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR SOUTHEASTERN SUSSEX COUNTY...

At 224 PM EDT, a severe thunderstorm was located near Selbyville, or
7 miles northwest of Ocean City, moving south at 10 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 and South Bethany.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3845 7529 3849 7529 3850 7527 3851 7504
      3845 7503 3845 7504 3846 7505 3845 7505
TIME...MOT...LOC 1824Z 343DEG 8KT 3844 7517 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DeSilva

934 
WWUS51 KPHI 261843
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
243 PM EDT Thu Jun 26 2025

DEC005-261853-
/O.EXP.KPHI.SV.W.0090.000000T0000Z-250626T1845Z/
Sussex DE-
243 PM EDT Thu Jun 26 2025

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SUSSEX COUNTY
WILL EXPIRE AT 245 PM EDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern Delaware.

LAT...LON 3845 7529 3849 7529 3850 7527 3851 7504
      3845 7503 3845 7504 3846 7505 3845 7505
TIME...MOT...LOC 1843Z 355DEG 8KT 3840 7517 

$$

DeSilva

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 4:25 AM EDT	Coastal Flood Advisory	PHI	Kent, New Castle, Sussex	23 hr
Jun 26, 7:14 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	46 min
Jun 26, 7:27 PM EDT	Flash Flood Warning	PHI	New Castle	4 hr

Nearby

Severe Thunderstorm Warnings in Delaware, 2025 Every 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.