Alert archive / Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 92

March 11, 20006 counties in Maryland; 42 counties in North Carolina; 61 counties in Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Mar 11, 2000, 6:45 PM EST for 6 counties in Maryland; 42 counties in North Carolina; 61 counties in Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Mar 11, 2000, 6:45 PM EST (23:45 UTC)
Expired: Mar 12, 2000, 12:00 AM EST
In force: 5 hr
Issued by: the Storm Prediction Center

All 109 counties

Charles County, MD, Dorchester County, MD, Saint Mary's County, MD, Somerset County, MD, Wicomico County, MD, Worcester County, MD, Alamance County, NC, Beaufort County, NC, Bertie County, NC, Camden County, NC, Caswell County, NC, Chatham County, NC, Chowan County, NC, Craven County, NC, Cumberland County, NC, Currituck County, NC, Durham County, NC, Edgecombe County, NC, Franklin County, NC, Gates County, NC, Granville County, NC, Greene County, NC, Halifax County, NC, Harnett County, NC, Hertford County, NC, Hoke County, NC, Johnston County, NC, Jones County, NC, Lee County, NC, Lenoir County, NC, Martin County, NC, Montgomery County, NC, Moore County, NC, Nash County, NC, Northampton County, NC, Orange County, NC, Pasquotank County, NC, Perquimans County, NC, Person County, NC, Pitt County, NC, Richmond County, NC, Sampson County, NC, Vance County, NC, Wake County, NC, Warren County, NC, Washington County, NC, Wayne County, NC, Wilson County, NC, Accomack County, VA, Amelia County, VA, Brunswick County, VA, Buckingham County, VA, Caroline County, VA, Charles City County, VA, Charlotte County, VA, Chesterfield County, VA, City of Chesapeake, VA, City of Colonial Heights, VA, City of Emporia, VA, City of Franklin, VA, City of Fredericksburg, VA, City of Hampton, VA, City of Hopewell, VA, City of Newport News, VA, City of Norfolk, VA, City of Petersburg, VA, City of Poquoson, VA, City of Portsmouth, VA, City of Richmond, VA, City of Suffolk, VA, City of Virginia Beach, VA, City of Williamsburg, VA, Cumberland County, VA, Dinwiddie County, VA, Essex County, VA, Fluvanna County, VA, Gloucester County, VA, Goochland County, VA, Greensville County, VA, Halifax County, VA, Hanover County, VA, Henrico County, VA, Isle of Wight County, VA, James City County, VA, King and Queen County, VA, King George County, VA, King William County, VA, Lancaster County, VA, Louisa County, VA, Lunenburg County, VA, Mathews County, VA, Mecklenburg County, VA, Middlesex County, VA, New Kent County, VA, Northampton County, VA, Northumberland County, VA, Nottoway County, VA, Orange County, VA, Powhatan County, VA, Prince Edward County, VA, Prince George County, VA, Richmond County, VA, Southampton County, VA, Spotsylvania County, VA, Stafford County, VA, Surry County, VA, Sussex County, VA, Westmoreland County, VA, York County, VA

Warnings issued inside it

10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 11, 7:19 PM EST	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Campbell, Charlotte, City of Lynchburg	41 min
Mar 11, 7:23 PM EST	Severe Thunderstorm Warning	AKQ	Lunenburg, Prince Edward	32 min
Mar 11, 7:45 PM EST	Severe Thunderstorm Warning	RNK	Buckingham	30 min
Mar 11, 7:50 PM EST	Severe Thunderstorm Warning	AKQ	Amelia, Cumberland	30 min
Mar 11, 7:50 PM EST	Severe Thunderstorm Warning	AKQ	Lunenburg, Nottoway	30 min
Mar 11, 9:09 PM EST	Severe Thunderstorm Warning	AKQ	Hanover	26 min
Mar 11, 9:09 PM EST	Severe Thunderstorm Warning	AKQ	City of Colonial Heights	26 min
Mar 11, 9:09 PM EST	Severe Thunderstorm Warning	AKQ	Chesterfield, Dinwiddie, City of Petersburg	26 min
Mar 11, 9:09 PM EST	Severe Thunderstorm Warning	AKQ	Henrico, City of Richmond	26 min
Mar 11, 9:09 PM EST	Severe Thunderstorm Warning	AKQ	City of Hopewell	26 min

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 11.8 hours before the alert went out and 163 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: 53 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 437 m²/s²
0-3 km storm-relative helicity: 598 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 
WWUS9 KMKC 112322
MKC WW 112322
MDZ000-NCZ000-VAZ000-CWZ000-120500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 92
STORM PREDICTION CENTER NORMAN OK
622 PM EST SAT MAR 11 2000

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

   SOUTHERN MARYLAND                           
   CENTRAL AND EASTERN NORTH CAROLINA                     
   EASTERN VIRGINIA                           
   COASTAL WATERS                     

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 645 PM UNTIL
MIDNIGHT EST.

HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 95 STATUTE MILES
EAST AND WEST OF A LINE FROM 20 MILES EAST OF FAYETTEVILLE NORTH
CAROLINA TO 15 MILES NORTH NORTHEAST OF PATUXENT RIVER MARYLAND.

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.

DISCUSSION...BAND OF THUNDERSTORMS WITH EMBEDDED BOW ECHOES IS
EXPECTED TO MOVE NEWD ACROSS AREA WITH RISK OF DAMAGING WINDS WITH
ORGANIZED BOW CONFIGURATIONS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCHES.  EXTREME TURBULENCE AND SURFFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.  MEAN STORM
MOTION VECTOR 23035.

...JOHNS

;382,0743 345,0765 345,0801 382,0780;

Nearby

Severe Thunderstorm Watches in Virginia, 2000 Severe Thunderstorm Watches in North Carolina, 2000 Severe Thunderstorm Watches in Maryland, 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.