Alert archive / Maryland / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 46, NWS Philadelphia/Mount Holly

May 25, 2004Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 25, 2004, 9:04 PM EDT for Queen Anne's County, Maryland. It was in force for 26 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
May 25, 2004, 9:04 PM EDT (01:04 UTC)
Expired
May 25, 2004, 9:30 PM EDT
In force
26 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Queen Anne's County, MD

The watch it was issued in

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

IssuedProductOfficeLasted
May 25, 7:25 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.1 hours before the alert went out and 122 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-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2004-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1367 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2004-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1367 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
340 m²/s²
Significant tornado parameter
1.9
Supercell composite
6.8

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 260104
SVRPHI
MDC035-260130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
905 PM EDT TUE MAY 25 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED A

* SEVERE THUNDERSTORM WARNING FOR...
  QUEEN ANNES COUNTY IN NORTHEAST MARYLAND

* UNTIL 930 PM EDT

* AT 902 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 8 MILES EAST OF CENTREVILLE...OR
  ABOUT 24 MILES SOUTHWEST OF DOVER...AND MOVING EAST AT 35 MPH.

THIS STORM IS ALSO PRODUCING VERY FREQUENT CLOUD TO GROUND LIGHTNING.

LAT...LON 3915 7604 3897 7614 3894 7598 3914 7580

$$

AMC

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 8:25 PM EDTSevere Thunderstorm WarningPHIQueen Anne's35 min
May 25, 8:36 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot54 min
May 25, 9:30 PM EDTSevere Thunderstorm WarningPHICaroline30 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2004Every 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.