Alert archive / Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 347

May 24, 2000Calvert County, Charles County, Talbot County, Maryland; 49 counties in Virginia; Monroe County, West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2000, 11:15 PM EDT for Calvert County, Charles County, Talbot County, Maryland; 49 counties in Virginia; Monroe County, West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2000, 11:15 PM EDT (03:15 UTC)
Expired: May 25, 2000, 5:00 AM EDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 53 counties

Calvert County, MD, Charles County, MD, Talbot County, MD, Albemarle County, VA, Alleghany County, VA, Amelia County, VA, Amherst County, VA, Appomattox County, VA, Augusta County, VA, Bath County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Caroline County, VA, City of Buena Vista, VA, City of Charlottesville, VA, City of Covington, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Lexington, VA, City of Lynchburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Roanoke, VA, City of Salem, VA, City of Staunton, VA, City of Waynesboro, VA, Craig County, VA, Culpeper County, VA, Cumberland County, VA, Fauquier County, VA, Fluvanna County, VA, Giles County, VA, Goochland County, VA, Greene County, VA, Hanover County, VA, Highland County, VA, King George County, VA, Louisa County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Powhatan County, VA, Prince Edward County, VA, Prince William County, VA, Rappahannock County, VA, Roanoke County, VA, Rockbridge County, VA, Rockingham County, VA, Spotsylvania County, VA, Stafford County, VA, Monroe County, WV

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 3.3 hours before the alert went out and 83 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: 503 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1306 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 250302
MKC WW 250302
MDZ000-VAZ000-250900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 347
STORM PREDICTION CENTER NORMAN OK
1102 PM EDT WED MAY 24 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHERN MARYLAND                           
   NORTHERN AND CENTRAL VIRGINIA                           

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1115 PM
UNTIL 500 AM EDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES WEST SOUTHWEST OF LYNCHBURG
VIRGINIA TO 65 MILES NORTHEAST OF CHARLOTTESVILLE VIRGINIA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 342...WW 343...WW
344...WW 345...WW 346...

DISCUSSION...LINE OF SEVERE THUNDERSTORMS MOVING INTO WATCH AREA
AHEAD OF COLD FRONT AND UPPER TROUGH. AIR MASS MODERATELY UNSTABLE
WITH 2000 J/KG CAPES. 50 TO 60 KT MID LEVEL FLOW WILL PROVIDE
FAVORABLE SHEAR FOR DAMAGING WINDS AND LARGE HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 28035.


...ROGASH

;384,0760 371,0780 371,0805 384,0790;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 25, 10:15 AM EDT	Severe Thunderstorm Watch	SPC	Brunswick, Greensville, Halifax, Mecklenburg, Pittsylvania, Southampton and 3 more	5 hr

Nearby

Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in Maryland, 2000 Severe Thunderstorm Watches in West Virginia, 2000 Every severe thunderstorm watch in 2000

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.