Alert archive / Delaware / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 117, NWS Philadelphia/Mount Holly

July 12, 2022Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2022, 6:28 PM EDT for Kent County, Delaware. It was in force for 18 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: Jul 12, 2022, 6:28 PM EDT (22:28 UTC)
Expired: Jul 12, 2022, 6:46 PM EDT
In force: 18 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 49 km from the middle of the area, began a volume at 22:31 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
Jul 12, 5:05 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.5 hours before the alert went out and 143 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 872 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

734 
WUUS51 KPHI 122228
SVRPHI
DEC001-122315-
/O.NEW.KPHI.SV.W.0117.220712T2228Z-220712T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
628 PM EDT Tue Jul 12 2022

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  East central Kent County in central Delaware...

* Until 715 PM EDT.

* At 628 PM EDT, a severe thunderstorm was located near Dover Base
  Housing, or near Dover, moving east at 25 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Dover, Camden, Bowers, Rising Sun-Lebanon, Rising Sun, Dover Base
  Housing, Dover Speedway, Fortesque, Port Norris, Magnolia, Little
  Creek, Kent Acres, Highland Acres, Riverview, Rodney Village and
  Woodside East.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3921 7554 3927 7522 3924 7517 3920 7516
      3918 7513 3923 7512 3922 7511 3921 7505
      3928 7500 3925 7500 3925 7499 3923 7503
      3920 7503 3919 7498 3904 7496 3903 7553
TIME...MOT...LOC 2228Z 263DEG 21KT 3914 7543 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

MPS

1 follow-up statement

446 
WWUS51 KPHI 122246
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
646 PM EDT Tue Jul 12 2022

DEC001-122255-
/O.CAN.KPHI.SV.W.0117.000000T0000Z-220712T2315Z/
Kent DE-
646 PM EDT Tue Jul 12 2022

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KENT COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central Delaware...and southern New Jersey.

LAT...LON 3921 7554 3927 7522 3924 7517 3920 7516
      3918 7513 3923 7512 3922 7511 3921 7505
      3928 7500 3925 7500 3925 7499 3923 7503
      3920 7503 3919 7498 3904 7496 3903 7553
TIME...MOT...LOC 2243Z 263DEG 21KT 3915 7530 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	31 min
Jul 12, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	48 min
Jul 12, 7:37 PM EDT	Severe Thunderstorm Warning Destructive damage threat	PHI	Kent, Sussex	23 min
Jul 12, 7:54 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	28 min
Jul 12, 7:56 PM EDT	Special Weather Statement	PHI	Sussex	34 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2022 Every severe thunderstorm warning in 2022

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.