Alert archive / Delaware / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 32, NWS Philadelphia/Mount Holly

May 12, 2002Caroline County, Maryland; Kent County, New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 12, 2002, 6:08 PM EDT for Caroline County, Maryland; Kent County, New Castle County, Delaware. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 12, 2002, 6:08 PM EDT (22:08 UTC)
Expired: May 12, 2002, 6:45 PM EDT
In force: 37 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

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

What was reported inside it

Time	Report	Where	Remark
May 12, 6:12 PM EDT	Thunderstorm Wind 50 E	Blackiston, DE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 12, 5:15 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 12, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.1 hours before the alert went out and 141 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: 576 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 262 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 122208
SVRPHI
DEC001-003-MDC011-122245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
607 PM EDT SUN MAY 12 2002

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KENT COUNTY IN CENTRAL DELAWARE.
  NORTHERN CAROLINE COUNTY IN EASTERN MARYLAND.
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE.

* UNTIL 645 PM EDT.

* AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 13 MILES WEST OF HARTLY...MOVING EAST AT
  50 MPH. THIS SMALL LINE OF STORMS HAS PRODUCED WIND DAMAGE IN 
  POMONA IN KENT COUNTY MARYLAND. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLAYTON AT 615 PM.
  CHESWOLD...SMYRNA...CAMDEN...WOODSIDE AT 620 PM.
  DOVER...RISING SUN...FREDERICA AT 625 PM.
  BOWERS AT 630 PM.

DAMAGING WINDS IN EXCESS OF 55 MPH ARE EXPECTED FROM THIS STORM. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

$$

LAT...LON 3946 7563 3886 7592 3895 7528

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	43 min

Nearby

Severe Thunderstorm Warnings in Delaware, 2002 Severe Thunderstorm Warnings in Maryland, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.