Alert archive / Delaware / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 65, NWS Philadelphia/Mount Holly

June 26, 2024Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2024, 11:00 PM EDT for Sussex County, Delaware. It was in force for 45 min. 3 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: Jun 26, 2024, 11:00 PM EDT (03:00 UTC)
Expired: Jun 26, 2024, 11:45 PM EDT
In force: 45 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), 41 km from the middle of the area, began a volume at 03:00 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
Jun 26, 11:09 PM EDT	TSTM WND DMG	4 Wnw Gumboro, DE	Roof blown off a pole barn and trees blown down near Careys Camp Road and Little Hill Road.
Jun 26, 11:09 PM EDT	TSTM WND DMG	5 Ene Delmar, DE	Tree partially on house along Pepperbox Road.
Jun 26, 11:30 PM EDT	TSTM WND DMG	Frankford, DE	Tree down on wires. 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.0 hours before the alert went out and 64 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: 613 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1267 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

388 
WUUS51 KPHI 270300
SVRPHI
DEC005-270345-
/O.NEW.KPHI.SV.W.0065.240627T0300Z-240627T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1100 PM EDT Wed Jun 26 2024

The National Weather Service in Mount Holly NJ has issued a

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

* Until 1145 PM EDT.

* At 1100 PM EDT, a severe thunderstorm was located near Delmar, or
  10 miles northeast of Salisbury, moving northeast 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...
  Millsboro, Laurel, Lewes, Selbyville, Delmar, Dagsboro, Millville,
  Henlopen Acres, Gumboro, Sycamore, 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.

&&

LAT...LON 3845 7503 3846 7505 3845 7505 3845 7559
      3846 7569 3849 7570 3880 7512 3845 7489
TIME...MOT...LOC 0300Z 240DEG 24KT 3849 7547 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RCM

1 follow-up statement

221 
WWUS51 KPHI 270335
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1135 PM EDT Wed Jun 26 2024

DEC005-270345-
/O.EXP.KPHI.SV.W.0065.000000T0000Z-240627T0345Z/
Sussex DE-
1135 PM EDT Wed Jun 26 2024

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SUSSEX COUNTY WILL
EXPIRE AT 1145 PM EDT...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3845 7503 3846 7505 3845 7505 3845 7559
      3846 7569 3849 7570 3880 7512 3845 7489
TIME...MOT...LOC 0335Z 240DEG 24KT 3860 7522 

$$

RCM

Nearby

Severe Thunderstorm Warnings in Delaware, 2024 Every severe thunderstorm warning in 2024

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.