Alert archive / Maryland / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly

June 12, 2003Cecil County, Maryland; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2003, 7:41 PM EDT for Cecil County, Maryland; New Castle County, Delaware. It was in force for 64 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: Jun 12, 2003, 7:41 PM EDT (23:41 UTC)
Expired: Jun 12, 2003, 8:45 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties New Castle County, DE, Cecil County, MD

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 12, 1:20 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.7 hours before the alert went out and 34 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: 4 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 100 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.

614 
WUUS51 KPHI 122341
SVRPHI
DEC003-MDC015-130045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
740 PM EDT THU JUN 12 2003

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CECIL COUNTY IN NORTHEAST MARYLAND.
  NEW CASTLE COUNTY IN NORTHERN DELAWARE.

* UNTIL 845 PM EDT.

* AT 729 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 6 MILES SOUTH OF ELKTON...MOVING NORTHEAST
  AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEWARK AT 755 PM.
  NEWPORT...WILMINGTON MANOR...STANTON AT 815 PM.
  ELSMERE AT 820 PM.

HAIL UP TO PENNY SIZE AND WINDS GREATER THAN 55 MILES AN HOUR ARE 
EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL 
THE STORM HAS PASSED.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM THURSDAY
EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND SOUTHEASTERN PENNSYLVANIA.
LAT...LON 3955 7595 3942 7582 3936 7558 3958 7562
          3978 7553 3979 7566

$$

KRUZDLO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 10:26 PM EDT	Severe Thunderstorm Warning	PHI	Talbot	49 min
Jun 12, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's, Talbot	53 min
Jun 12, 6:33 PM EDT	Severe Thunderstorm Warning	PHI	Kent	57 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2003 Severe Thunderstorm Warnings in Delaware, 2003 Every severe thunderstorm warning in 2003

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.