Alert archive / Delaware / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 50, NWS Philadelphia/Mount Holly

May 26, 2019Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 26, 2019, 8:18 PM EDT for Kent County, Delaware. It was in force for 27 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: May 26, 2019, 8:18 PM EDT (00:18 UTC)
Expired: May 26, 2019, 8:45 PM EDT
In force: 27 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Kent County, DE

The radar

The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 00:22 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
May 26, 8:40 PM EDT	TSTM WND DMG	1 Se West Dover, DE	DELAYED REPORT. DOWNED POWER LINES NEAR ROUTE 8 WEST OF DOVER FROM THUNDERSTORM WIND GUSTS. TIME ESTIMATED FROM RADAR.
May 26, 8:51 PM EDT	TSTM WND GST 49	3 E Highland Acres, DE	49 MPH THUNDERSTORM WIND GUST AT DOVER AFB.

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, 0.3 hours before the alert went out and 139 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: 560 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1581 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

632 
WUUS51 KPHI 270018
SVRPHI
DEC001-270045-
/O.NEW.KPHI.SV.W.0050.190527T0018Z-190527T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
818 PM EDT Sun May 26 2019

The National Weather Service in Mount Holly NJ has issued a

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

* Until 845 PM EDT.

* At 817 PM EDT, a severe thunderstorm was located over Dover
  Speedway, moving southeast 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...
  Dover, Camden, Bowers, Rising Sun-Lebanon, Rising Sun, Dover Base
  Housing, Dover Speedway, Wyoming, Little Creek, Leipsic, Rodney
  Village, Kent Acres and Highland Acres.

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 3913 7562 3925 7556 3929 7553 3925 7540
      3924 7541 3924 7540 3920 7540 3915 7541
      3911 7540 3907 7541 3906 7540
TIME...MOT...LOC 0017Z 293DEG 29KT 3918 7549 

HAIL...1.00IN
WIND...60MPH
 
$$

Iovino

1 follow-up statement

828 
WWUS51 KPHI 270035
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
835 PM EDT Sun May 26 2019

DEC001-270045-
/O.CON.KPHI.SV.W.0050.000000T0000Z-190527T0045Z/
Kent DE-
835 PM EDT Sun May 26 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR CENTRAL KENT COUNTY...

At 835 PM EDT, a severe thunderstorm was located near Dover Base
Housing, moving southeast 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...
Dover, Camden, Bowers, Rising Sun-Lebanon, Rising Sun, Dover Base
Housing, Dover Speedway, Wyoming, Little Creek, Leipsic, Rodney
Village, Kent Acres and Highland Acres.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3913 7562 3925 7556 3929 7553 3925 7540
      3924 7541 3924 7540 3920 7540 3915 7541
      3911 7540 3907 7541 3906 7540
TIME...MOT...LOC 0035Z 294DEG 23KT 3914 7540 

HAIL...1.00IN
WIND...60MPH
 
$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 9:45 PM EDT	Severe Thunderstorm Warning	PHI	Kent	45 min
May 26, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	66 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2019 Every severe thunderstorm warning in 2019

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.