Alert archive / Delaware / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 62, NWS Philadelphia/Mount Holly

June 8, 2023Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 8, 2023, 12:02 PM EDT for Sussex County, Delaware. It was in force for 43 min. 2 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 8, 2023, 12:02 PM EDT (16:02 UTC)
Expired: Jun 8, 2023, 12:45 PM EDT
In force: 43 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), 26 km from the middle of the area, began a volume at 16:02 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 8, 12:50 PM EDT	HAIL 0.25	2 Wnw Dagsboro, DE
Jun 8, 12:50 PM EDT	HAIL 0.25	2 Wnw Dagsboro, DE

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 12:00Z, 4.0 hours before the alert went out and 74 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: 206 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 997 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

974 
WUUS51 KPHI 081602
SVRPHI
DEC005-081645-
/O.NEW.KPHI.SV.W.0062.230608T1602Z-230608T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1202 PM EDT Thu Jun 8 2023

The National Weather Service in Mount Holly NJ has issued a

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

* Until 1245 PM EDT.

* At 1201 PM EDT, a severe thunderstorm was located over Sharptown,
  or 11 miles southeast of Hurlock, moving east at 35 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...
  Georgetown, Seaford, Millsboro, Laurel, Milton, Selbyville,
  Bridgeville, Delmar, Dagsboro, Gumboro, Sycamore, Long Neck,
  Blades, Frankford and Bethel.

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.

&&

LAT...LON 3846 7569 3866 7571 3870 7569 3876 7557
      3881 7520 3845 7513 3845 7537
TIME...MOT...LOC 1601Z 262DEG 29KT 3855 7568 

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

$$

Robertson

1 follow-up statement

891 
WWUS51 KPHI 081624
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1224 PM EDT Thu Jun 8 2023

DEC005-081645-
/O.CON.KPHI.SV.W.0062.000000T0000Z-230608T1645Z/
Sussex DE-
1224 PM EDT Thu Jun 8 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR SUSSEX COUNTY...

At 1224 PM EDT, a severe thunderstorm was located over Sycamore, or 8
miles south of Georgetown, moving east at 35 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...
Georgetown, Seaford, Millsboro, Laurel, Milton, Selbyville, Delmar,
Dagsboro, Gumboro, Sycamore, Long Neck, Blades, Frankford and Bethel.

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.

&&

LAT...LON 3846 7569 3863 7571 3877 7553 3881 7520
      3845 7513
TIME...MOT...LOC 1624Z 262DEG 29KT 3858 7544 

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

$$

Robertson

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 11:17 AM EDT	Special Weather Statement	PHI	Sussex	28 min
Jun 8, 11:43 AM EDT	Special Weather Statement	PHI	Sussex	32 min
Jun 8, 11:52 AM EDT	Special Weather Statement	PHI	Sussex	53 min
Jun 8, 12:12 PM EDT	Special Weather Statement	PHI	Sussex	18 min
Jun 8, 12:23 PM EDT	Special Weather Statement	PHI	Sussex	22 min
Jun 8, 12:43 PM EDT	Special Weather Statement	PHI	Sussex	47 min
Jun 8, 1:28 PM EDT	Special Weather Statement	PHI	Sussex	47 min
Jun 8, 1:38 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	37 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2023 Every severe thunderstorm warning in 2023

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.