Alert archive / Maryland / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 1, NWS Philadelphia/Mount Holly

March 13, 2001Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 13, 2001, 10:20 PM EST for Kent County, Queen Anne's County, Maryland. It was in force for 40 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Mar 13, 2001, 10:20 PM EST (03:20 UTC)
Expired: Mar 13, 2001, 11:00 PM EST
In force: 40 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Kent County, MD, Queen Anne's County, MD

What was reported inside it

Time	Report	Where	Remark
Mar 13, 10:40 PM EST	Thunderstorm Wind 57 M	St Michaels, MD

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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 3.3 hours before the alert went out and 101 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: 2640 m above ground
0-6 km bulk shear: 86 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 79 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 140329
SVRPHL

MDC029-035-041-140400-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1020 PM EST TUE MAR 13 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TALBOT COUNTY IN EASTERN MARYLAND.
  QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND.
  KENT COUNTY IN NORTHEAST MARYLAND.

* UNTIL 1100 PM EST.

* AT 1013 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORM JUST WEST OF UPPER CHESAPEAKE BAY...
  MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROCK HALL...STEVENSVILLE AT 1025 PM.
  GRASONVILLE...ST. MICHAELS AT 1030 PM.
  CENTREVILLE...CHESTERTOWN...OXFORD AT 1035 PM.
  CHURCH HILL...EASTON AT 1040 PM.
  QUEEN ANNE AT 1045 PM.

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

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

LAT...LON 3934 7638 3882 7658 3860 7606 3935 7582

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 10:20 PM EST	Severe Thunderstorm Warning	PHI	Talbot	40 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2001 Every severe thunderstorm warning in 2001

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.