Alert archive / Virginia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 29, NWS Baltimore/Washington

May 10, 2000Frederick County, City of Winchester, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at May 10, 2000, 3:12 PM EDT for Frederick County, City of Winchester, Virginia. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 10, 2000, 3:12 PM EDT (19:12 UTC)
Expired
May 10, 2000, 4:00 PM EDT
In force
48 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

Counties City of Winchester, VA, Frederick County, VA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.2 hours before the alert went out and 75 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 12:00Z on 2000-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 825 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 12:00Z on 2000-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
825 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1518 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KLWX 101913
SVRWBC
VAC069-840-102000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
312 PM EDT WED MAY 10 2000

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CITY OF WINCHESTER IN NORTHWEST VIRGINIA
  FREDERICK COUNTY IN NORTHWEST VIRGINIA

* UNTIL 400 PM EDT

* AT 312 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL 3 MILES WEST OF STEPHENS
  CITY...OR ABOUT 8 MILES SOUTHWEST OF WINCHESTER...MOVING EAST AT 25
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   WINCHESTER...ARMEL AT 322 PM EDT

AS THE STORM APPROACHES MOVE TO A PLACE OF SAFETY. TUNE INTO NOAA
WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR THE LATEST
WEATHER INFORMATION.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 PM EDT
WEDNESDAY AFTERNOON FOR AND NORTHWESTERN MARYLAND AND NORTHERN
VIRGINIA.

.END/ MKM/JB

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 2:50 PM EDT, 22 minutes earlier.

Area forecast discussion, May 10, 2:50 PM EDT, 22 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
250 PM EDT WED MAY 10 2000

CD FNT PROGRESSING INTO THE APLCHNS W/ MULTIPLE CELLS FIRING AHEAD
OF IT..SOME OF THE MOST IMPRESSIVE X-SXNS I'VE SEEN IN A LONG TIME.
WE ARE MONITORING AND ISSUING WRNGS AS NEEDED.

I PLAN TO LV A 30 POP IN FOR THE ERLY EVNG FOR DC-BALT AREA...THEN
CLRG ACROSS THE CWA OVRNGT. TMRW LOOKS LIKE A NICE RESPITE FM THE
PAST SVRL DAYS OF VERY JULY-LIKE WX. NOTHING MUCH TO SPEAK OF THURS
EVENG OR FRIDAY. SLOW WARMUP ON FRI AND SAT...THEN ANOTHER CHC OF
RW/TRW LATE SAT AND SUN.

WOODY!

.LWX...SEVERE THUNDERSTORM WATCH UNTIL 500 PM EDT FOR ZONE DCZ001...
       MDZ004>018.../VAZ041>042...VAZ052>054.
       SMALL CRAFT ADVISORY THIS EVNG NRN CHES BAY AND POT

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 1:09 PM EDTSevere Thunderstorm WarningLWXFrederick51 min
May 10, 1:56 PM EDTSevere Thunderstorm WarningLWXFrederick49 min
May 10, 1:56 PM EDTSevere Thunderstorm WarningLWXCity of Winchester49 min
May 10, 3:35 PM EDTSevere Thunderstorm WarningLWXClarke40 min
May 10, 3:37 PM EDTSevere Thunderstorm WarningLWXWarren53 min
May 10, 4:00 PM EDTSevere Thunderstorm WarningLWXLoudoun45 min
May 10, 4:15 PM EDTSevere Thunderstorm WarningLWXFauquier, Prince William45 min
May 10, 4:53 PM EDTSevere Thunderstorm WarningLWXCulpeper, Madison, Orange52 min
May 10, 4:58 PM EDTSevere Thunderstorm WarningLWXFairfax, Prince William, City of Fairfax, City of Falls Church47 min
May 10, 4:58 PM EDTSevere Thunderstorm WarningLWXCity of Manassas, City of Manassas Park47 min
May 10, 5:15 PM EDTSevere Thunderstorm WarningLWXFauquier, Stafford45 min
May 10, 5:35 PM EDTSevere Thunderstorm WarningLWXSpotsylvania40 min
May 10, 5:43 PM EDTSevere Thunderstorm WarningLWXArlington, Fairfax, Prince William, City of Alexandria47 min
May 10, 6:22 PM EDTSevere Thunderstorm WarningLWXKing George38 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2000Every severe thunderstorm warning 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.