Alert archive / Delaware / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 29, NWS Philadelphia/Mount Holly

May 2, 2019Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 2, 2019, 6:38 PM EDT for Kent County, Sussex County, Delaware. It was in force for 52 min. 1 report 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 2, 2019, 6:38 PM EDT (22:38 UTC)
Expired: May 2, 2019, 7:30 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kent County, DE, Sussex County, DE

The radar

The Dover AFB radar (KDOX), 6 km from the middle of the area, began a volume at 22:39 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 2, 6:43 PM EDT	TSTM WND DMG	2 Wsw Greenwood, DE	TWO TREES DOWN ON SCOTTS STORE RD. 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 12:00Z, 10.6 hours before the alert went out and 96 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: 132 J/kg
Mixed-layer CIN: -205 J/kg
Mixed-layer LCL: 1166 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

420 
WUUS51 KPHI 022238
SVRPHI
DEC001-005-022330-
/O.NEW.KPHI.SV.W.0029.190502T2238Z-190502T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
638 PM EDT Thu May 2 2019

The National Weather Service in Mount Holly NJ has issued a

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

* Until 730 PM EDT.

* At 638 PM EDT, a severe thunderstorm was located over Andrewsville,
  or 15 miles northwest of Georgetown, moving east at 15 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, Milford, Milton, Bridgeville, Ellendale, Andrewsville,
  Greenwood and Farmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3872 7570 3891 7567 3888 7527 3887 7525
      3862 7537
TIME...MOT...LOC 2238Z 280DEG 14KT 3882 7563 

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

Iovino

1 follow-up statement

048 
WWUS51 KPHI 022303
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
703 PM EDT Thu May 2 2019

DEC001-005-022330-
/O.CON.KPHI.SV.W.0029.000000T0000Z-190502T2330Z/
Sussex DE-Kent DE-
703 PM EDT Thu May 2 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL SUSSEX AND SOUTH CENTRAL KENT COUNTIES...

At 702 PM EDT, a severe thunderstorm was located near Ellendale, or
10 miles northwest of Georgetown, moving east at 15 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, Milford, Milton and Ellendale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3870 7563 3890 7555 3888 7527 3887 7525
      3862 7537
TIME...MOT...LOC 2302Z 280DEG 14KT 3880 7551 

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 2, 4:19 AM EDT	Dense Fog Advisory	PHI	Kent, New Castle	5 hr
May 2, 6:17 PM EDT	Special Weather Statement	PHI	Sussex	58 min
May 2, 7:20 PM EDT	Special Weather Statement	PHI	Sussex	40 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.