Alert archive / Maryland / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 122, NWS Philadelphia/Mount Holly

July 12, 2004Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 12, 2004, 5:26 PM EDT for Talbot County, Maryland. It was in force for 49 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, 5:26 PM EDT (21:26 UTC)
Expired: Jul 12, 2004, 6:15 PM EDT
In force: 49 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Talbot County, MD

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.4 hours before the alert went out and 89 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 122126
SVRPHI
MDC041-122215-

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN TALBOT COUNTY IN EASTERN MARYLAND

* UNTIL 615 PM EDT

* AT 515 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 6 MILES SOUTHWEST OF OXFORD...OR
  ABOUT 46 MILES EAST OF FORT HUNT...AND MOVING EAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TRAPPE BY 545 PM EDT...
  9 MILES SOUTH OF EASTON BY 550 PM EDT...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE 
NOT DEFINITE...A TORNADO MAY DEVELOP AT ANY TIME. IF A TORNADO IS 
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 3868 7625 3857 7623 3861 7593 3881 7601

$$

AMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 7:50 AM EDT	Flash Flood Warning	PHI	Cecil	68 days
Jul 12, 8:28 AM EDT	Flash Flood Warning	PHI	Cecil, Kent, Queen Anne's	78 days
Jul 12, 1:09 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	51 min
Jul 12, 1:17 PM EDT	Tornado Warning	PHI	Cecil	43 min
Jul 12, 2:52 PM EDT	Flash Flood Warning	PHI	Cecil	78 days
Jul 12, 4:49 PM EDT	Flash Flood Warning	PHI	Cecil	78 days
Jul 12, 5:45 PM EDT	Flash Flood Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	78 days
Jul 12, 6:51 PM EDT	Flash Flood Warning	PHI	Cecil	78 days

Nearby

Severe Thunderstorm Warnings in Maryland, 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.