Alert archive / Delaware / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 119, NWS Philadelphia/Mount Holly

July 12, 2004New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2004, 3:05 PM EDT for New Castle County, Delaware. It was in force for 55 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: Jul 12, 2004, 3:05 PM EDT (19:05 UTC)
Expired: Jul 12, 2004, 4:00 PM EDT
In force: 55 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County New Castle County, DE

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.1 hours before the alert went out and 36 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: 76 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 143 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 121905
SVRPHI
DEC003-122000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
305 PM EDT MON JUL 12 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE

* UNTIL 400 PM EDT

* AT 301 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR MIDDLETOWN...OR ABOUT 17
  MILES SOUTH OF NEWARK...AND MOVING EAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TOWNSEND AND ODESSA BY 310 PM EDT...

LAT...LON 3952 7577 3932 7576 3936 7552 3953 7558

$$

AMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 8:28 AM EDT	Flash Flood Warning	PHI	Kent, New Castle	78 days
Jul 12, 1:53 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	37 min
Jul 12, 2:22 PM EDT	Tornado Warning	PHI	New Castle	38 min
Jul 12, 3:51 PM EDT	Severe Thunderstorm Warning	PHI	Kent	54 min
Jul 12, 4:08 PM EDT	Tornado Warning	PHI	Kent	37 min
Jul 12, 4:33 PM EDT	Flash Flood Warning	PHI	Kent, New Castle	78 days
Jul 12, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Kent	36 min
Jul 12, 5:45 PM EDT	Flash Flood Warning	PHI	Kent, New Castle, Sussex	78 days
Jul 12, 7:32 PM EDT	Flash Flood Warning	PHI	Kent, New Castle	78 days

Nearby

Severe Thunderstorm Warnings in Delaware, 2004 Every severe thunderstorm warning in 2004

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.