Alert archive / Delaware / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 12, NWS Philadelphia/Mount Holly

April 2, 2005Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 2, 2005, 8:08 PM EST for Kent County, Delaware. It was in force for 52 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: Apr 2, 2005, 8:08 PM EST (01:08 UTC)
Expired: Apr 2, 2005, 9:00 PM EST
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Kent County, DE

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.1 hours before the alert went out and 118 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: 55 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 521 m above ground
0-6 km bulk shear: 94 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KPHI 030109
SVRPHI
DEC001-030200-
/O.NEW.KPHI.SV.W.0012.050403T0108Z-050403T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
808 PM EST SAT APR 2 2005

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN KENT COUNTY IN CENTRAL DELAWARE

* UNTIL 900 PM EST

* AT 804 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS       
  WERE LOCATED ALONG A LINE EXTENDING FROM HARRINGTON SOUTH TO NEAR
  ELLENDALE IN SUSSEX COUNTY. THE LINE IS MOVING NORTHEAST
  AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  FREDERICA BY 825 PM EST
  RISING SUN BY 830 PM EST
  BOWERS BY 840 PM EST

STORMS IN DELMARVA HAVE HAD A HISTORY OF PRODUCING LARGE HAIL
THIS EVENING. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS

LAT...LON 3915 7550 3913 7540 3907 7540 3903 7534
      3896 7530 3895 7532 3896 7538 3893 7540
      3891 7548 3884 7556 3884 7558

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 7:51 PM EST	Severe Thunderstorm Warning	PHI	Sussex	39 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2005 Every severe thunderstorm warning in 2005

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.