Alert archive / Maryland / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 58, NWS Philadelphia/Mount Holly

June 30, 2001Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 2001, 5:57 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 63 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 30, 2001, 5:57 PM EDT (21:57 UTC)
Expired: Jun 30, 2001, 7:00 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

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

What was reported inside it

Time	Report	Where	Remark
Jun 30, 6:20 PM EDT	Thunderstorm Wind 50 E	Queenstown, 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 12:00Z, 10.0 hours before the alert went out and 115 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: 1110 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1211 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 302158
SVRPHI

MDC029-035-302300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
557 PM EDT SAT JUN 30 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 700 PM EDT.

* AT 553 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... ALONG A LINE EXTENDING FROM 5 MILES
  NORTHWEST OF ROCK HALL TO STEVENSVILLE...MOVING EAST AT 20 MPH.
  TERMINAL DOPPLER RADAR WAS SHOWING WINDS IN EXCESS OF 50 MPH
  OVER CHESAPEAKE BAY.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CHESTERTOWN...CENTREVILLE AT 625 PM.
  CHURCH HILL AT 640 PM.
  MILLINGTON...SUDLERSVILLE AT 655 PM.

HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 55 MILES AN
HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED. TORRENTIAL RAINS ARE ALSO POSSIBLE.

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

$$

LAT...LON 3929 7640 3891 7641 3915 7576 3936 7581

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 2:20 PM EDT	Severe Thunderstorm Warning	PHI	Kent	40 min
Jun 30, 7:02 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	43 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.