Alert archive / Delaware / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 44, NWS Philadelphia/Mount Holly

May 23, 2019Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 23, 2019, 5:01 PM EDT for Kent County, Sussex County, Delaware. It was in force for 37 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: May 23, 2019, 5:01 PM EDT (21:01 UTC)
Expired: May 23, 2019, 5:38 PM EDT
In force: 37 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Kent County, DE, Sussex County, DE

The radar

The Dover AFB radar (KDOX), 15 km from the middle of the area, began a volume at 21:02 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 1:02 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.0 hours before the alert went out and 85 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: 1760 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

096 
WUUS51 KPHI 232101
SVRPHI
DEC001-005-232200-
/O.NEW.KPHI.SV.W.0044.190523T2101Z-190523T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
501 PM EDT Thu May 23 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Sussex County in southern Delaware...
  Southwestern Kent County in central Delaware...

* Until 600 PM EDT.

* At 500 PM EDT, severe thunderstorms were located along a line
  extending from Ridgely to near Matthews to Trappe to near
  University Of Maryland Center For Environmental Studies to near
  Taylors Island, moving east at 45 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Georgetown, Milford, Seaford, Laurel, Harrington, Milton,
  Bridgeville, Delmar, Ellendale, Gumboro, Sycamore, Andrewsville,
  Blades, Greenwood, Houston, Bethel and Farmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In addition to hail and damaging winds, frequent cloud to ground 
lightning is occurring with these storms. Move indoors immediately. 
Remember, if you can hear thunder, you are close enough to be struck 
by lightning.

&&

LAT...LON 3846 7569 3895 7573 3894 7532 3891 7531
      3888 7527 3868 7529 3851 7534 3845 7538
TIME...MOT...LOC 2100Z 284DEG 38KT 3895 7587 3880 7592 3864 7603 3859
7616 3844 7633

HAIL...0.88IN
WIND...60MPH
 
$$

Gorse

2 follow-up statements

147 
WWUS51 KPHI 232126
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
526 PM EDT Thu May 23 2019

DEC001-005-232200-
/O.CON.KPHI.SV.W.0044.000000T0000Z-190523T2200Z/
Sussex DE-Kent DE-
526 PM EDT Thu May 23 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SUSSEX AND SOUTHWESTERN KENT COUNTIES...

At 525 PM EDT, severe thunderstorms were located along a line
extending from Andrewsville to Bridgeville to Sharptown to near
Vienna to 14 miles south of Cambridge, moving east at 50 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Georgetown, Milford, Seaford, Laurel, Harrington, Milton,
Bridgeville, Delmar, Ellendale, Gumboro, Sycamore, Andrewsville,
Blades, Greenwood, Houston, Bethel and Farmington.

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 these storms.
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 3895 7573 3894 7532 3891 7531
      3888 7527 3868 7529 3851 7534 3845 7538
TIME...MOT...LOC 2125Z 289DEG 42KT 3887 7560 3874 7557 3856 7573 3851
7586 3836 7603

HAIL...0.75IN
WIND...60MPH
 
$$

Gorse

576 
WWUS51 KPHI 232138
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
538 PM EDT Thu May 23 2019

DEC001-005-232148-
/O.CAN.KPHI.SV.W.0044.000000T0000Z-190523T2200Z/
Sussex DE-Kent DE-
538 PM EDT Thu May 23 2019

...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX AND SOUTHWESTERN KENT
COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds up 
to 45 mph are still possible with these thunderstorms.

A severe thunderstorm watch remains in effect until 800 PM EDT for
central and southern Delaware.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

LAT...LON 3846 7569 3895 7573 3894 7532 3891 7531
      3888 7527 3868 7529 3851 7534 3845 7538
TIME...MOT...LOC 2136Z 284DEG 38KT 3884 7545 3871 7542 3853 7558 3848
7571 3833 7588

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 5:37 PM EDT	Special Weather Statement	PHI	Sussex	38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.