Alert archive / Delaware / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 18, NWS Philadelphia/Mount Holly

April 24, 2006Kent County, New Castle County, Delaware; Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 24, 2006, 1:02 AM EDT for Kent County, New Castle County, Delaware; Caroline County, Maryland. It was in force for 43 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: Apr 24, 2006, 1:02 AM EDT (05:02 UTC)
Expired: Apr 24, 2006, 1:45 AM EDT
In force: 43 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Kent County, DE, New Castle County, DE, Caroline County, MD

The radar

The Dover AFB radar (KDOX), 49 km from the middle of the area, began a volume at 05:05 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
Apr 24, 1:20 AM EDT	HAIL 0.75	Cheswold, DE
Apr 24, 1:50 AM EDT	HAIL 0.75	Dover, DE

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, 5.0 hours before the alert went out and 146 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: 760 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 739 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 240502
SVRPHI
DEC001-003-MDC011-240545-
/O.NEW.KPHI.SV.W.0018.060424T0502Z-060424T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
102 AM EDT MON APR 24 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN KENT COUNTY IN CENTRAL DELAWARE
  THIS INCLUDES THE CITY OF DOVER
  NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE

* UNTIL 145 AM EDT

* AT 1256 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 11 MILES NORTHWEST OF
  GOLDSBORO...OR ABOUT 24 MILES WEST OF DOVER...AND MOVING EAST AT 35
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GOLDSBORO BY 110 AM EDT
  HARTLY BY 120 AM EDT
  CLAYTON BY 125 AM EDT
  CHESWOLD...WOODSIDE...VIOLA AND SMYRNA BY 130 AM EDT
  DOVER...CAMDEN AND RISING SUN BY 135 AM EDT

LAT...LON 3940 7576 3912 7575 3902 7588 3904 7526
      3941 7549

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 1:46 AM EDT	Severe Thunderstorm Warning	PHI	Kent	44 min
Apr 24, 12:27 AM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	48 min
Apr 24, 8:42 AM EDT	Severe Thunderstorm Warning	PHI	Cecil	33 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2006 Severe Thunderstorm Warnings in Maryland, 2006 Every severe thunderstorm warning in 2006

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.