Severe Thunderstorm Warning 232, NWS Baltimore/Washington

Issued

Aug 9, 2000, 3:24 PM EDT (19:24 UTC)

Expired

Aug 9, 2000, 4:30 PM EDT

In force

66 min

Issued by

NWS Baltimore/Washington

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Frederick County, VA, Shenandoah County, VA, Warren County, VA

The Sterling radar (KLWX), 99 km from the middle of the area, began a volume at 19:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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.

000 
WUUS51 KLWX 091924
SVRWBC
VAC069-171-187-840-WVC027-031-092030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
324 PM EDT WED AUG 9 2000

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HAMPSHIRE COUNTY IN EASTERN WEST VIRGINIA
  HARDY COUNTY IN EASTERN WEST VIRGINIA
  CITY OF WINCHESTER IN NORTHWEST VIRGINIA
  FREDERICK COUNTY IN NORTHWEST VIRGINIA
  SHENANDOAH COUNTY IN NORTHWEST VIRGINIA
  WARREN COUNTY IN NORTHWEST VIRGINIA

* UNTIL 430 PM EDT

* AT 323 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 23 MILES NORTHWEST OF WOODSTOCK...MOVING EAST
  AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  5 MILES NORTH OF STEPHENS CITY AT 414 PM
  OVER WINCHESTER AT 418 PM

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

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.

LAT...LON 3922 7894 3893 7897 3873 7829 3935 7800

NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 2:40 PM EDT, 44 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
240 PM EDT WED AUG 9 2000

TROF CONTS OVR NE PTN OF THE COUNTRY INTO THE WEEKEND. ONE VORT MAX
PASSES N OF THE AREA OVRNGT. THE ASSOCD CDFNT WL PUSH INTO THE AREA
OVRNGT. AS THE VORT MAX LIFTS THRU NEW ENG...SFC FNT WL BECOME
SEPARATED FM ITS UPR LVL SUPPORT AND FNT WL SLOW DOWN OVR ERN PTNS OF
THE CWA ON THU. NEXT VORT DROPS THRU THE GTLKS THU NIGHT THEN PASSES
THRU THE AREA ON FRI. THIS SECOND AND FINAL VORT MAX WL SHOVE THE FNT
SE OF THE CWA THU NGT/FRI MORNING AND USHER IN A COOLER CANADIAN AIR
MASS.

FOR TONIGHT...BOW ECHO PROGRESSING AT ABOUT 285/50KTS TOWARD THE CWA
THIS AFTERNOON. BEHIND IT...ADDTNL DVLPMT OCCURRING OVR OH VLY. WL KEEP
LIKLEY POPS ALL NIGHT ALL ZNS. THINK INITIAL BOW ECHO WILL PRODUCE SVR
WX WITH SHRA/TSRA BEHIND THE MAIN BOW ECHO FOR A GOOD PORTION OF THE
NIGHT. WL USE ENHANCE WORDING FOR THE EVE HOURS.

W/FNT LAGGING OVR THE ERN ZNS ON THU WILL KEEP A CHC POP FOR SHRA/TSRA
GOING BUT KEEP IT DRY OVR WRN AREAS WHERE SOME SLIGHTLY DRIER AIR WILL
FILTER INTO THAT AREA. FNT FINALLY PUSHES SE OF THE AREA THU NIGHT SO
M/CLR THU NIGHT. COULD BE SOME CU/SC AROUND FRI AS VORT SWINGS THRU THE
AREA BUT M/SUNNY FCST SHUD WORK.

STUCK CLOSER TO THE AVN MOS FOR THIS FORECAST AS THE NGM MOS HAS BEEN
RUNNING WARM LATELY.

HEAT ADVY WILL DIE WITH THIS PACKAGE.

FCSTID = 15
DCA   73  90  70  85 /  70  30  10  20
BWI   70  90  67  86 /  70  30  10  10
MRB   68  90  63  85 /  60  20  10  10
IAD   68  90  63  85 /  60  20  10  10
CHO   70  90  67  86 /  70  30  10  10
HGR   68  90  63  85 /  60  20  10  10
NHK   70  90  67  86 3/  70  30  10  10

.LWX...
DC...SVR TSTM WATCH UNTIL 7 PM EDT.
MD...SVR TSTM WATCH UNTIL 7 PM EDT.
VA...SVR TSTM WATCH UNTIL 7 PM EDT.
WV...SVR TSTM WATCH UNTIL 7 PM EDT.

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

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; radar from the NEXRAD Level II archive.