Alert archive / Virginia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 22, NWS Baltimore/Washington

May 7, 2000Fauquier County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at May 7, 2000, 11:38 PM EDT for Fauquier County, Virginia. It was in force for 52 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 7, 2000, 11:38 PM EDT (03:38 UTC)
Expired
May 8, 2000, 12:30 AM EDT
In force
52 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Fauquier County, VA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 3.6 hours before the alert went out and 42 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 00:00Z on 2000-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 472 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 00:00Z on 2000-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
472 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
2353 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
78 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 
WUUS51 KLWX 080340
SVRWBC
VAC061-080430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
1138 PM EDT SUN MAY 7 2000

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  THE NORTH PART OF FAUQUIER COUNTY IN NORTHERN VIRGINIA

* UNTIL 1230 AM EDT

* AT 1138 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL OVER LINDEN...OR ABOUT 6 MILES
  SOUTHEAST OF FRONT ROYAL...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   DELAPLANE AT 1152 PM EDT
   MARSHALL AT MIDNIGHT EDT
   HALFWAY AT 1214 AM EDT

SEEK SAFETY INDOORS AWAY FROM WINDOWS. IF CAUGHT OUTSIDE...DO NOT
STAND UNDERNEATH TREES OR OTHER ISOLATED OBJECTS. DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

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.

.END/ GUSTIN

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 7, 9:17 PM EDT, 2 hours 21 minutes earlier.

Area forecast discussion, May 7, 9:17 PM EDT, 2 hours 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
917 PM EDT SAT MAY 6 2000

H5 RDG IS WKNG AND FLATTENING OUT THIS EVE AS SHRTWV ENERGY MOVES
THROUGH NEW ENG AND ANOTHER SHRTWV MVS INTO KY/IN. THIS KY/IN SHRTWV WL
HEAD EWD...WEAKEN AND SHEAR OUT OVR THE RGN MON. H5 RDG WL BUILD OVR
THE AREA AGAIN TUE AHEAD OF THE NXT SHRTWV MOVING INTO THE WRN OH VLY.

DESPITE THE LACK OF A SYNOPTIC TRIGGER...ENUF INSTABILITY DVLPD THIS
AFTRN TO TRIGGER ISOLD CNVCTN IN THE MTNS AND SW COUNTIES. A FEW CELLS
ARE HOLDING ON OVR THE HIGHLANDS BUT EXPECT THEM TO DIE NXT FEW HRS AS
WE LOOSE THE INSTABILITY. WL TAKE A LAST LOOK AT THE 88D BFR ISSUING
ZNS TO SEE IF WE NEED TO KEEP A LOW POP IN THAT AREA FOR A FEW MORE
HRS. 01Z DWPTS INDICATE MIN TEMPS ARE IN LINE SO NO ADJUSTMENT NEEDED
THERE. WL CHG FAR WRN AREAS TO P/C AS SATELLITE IMAGERY SHOWS HI CLDS
ADVANCING TOWARD THAT AREA AHEAD OF THE KY/IN SHRTWV.

WE HAVE HAD ISOLD CNVCTN THE PAST 2 DAYS WITH NO EVIDENT SYNOPTIC SCALE
TRIGGER. ON MON...CONDS APPEAR TO BE MORE FAVORABLE FOR CNVCTN.  WKNG
SHRTWV WL MOVE INTO THE AREA DURING THE AFTRN. 18Z ETA SHOWS LIS ARE
NEGATIVE AND CAPES REACH 500 TO 1000. IN ADDTN...PCP WATER IS OVR
1.25"...TTS AROUND AROUND 50 AND KINDEX AROUND 30. I HATE TO ADD THE
POP FOR THE 2ND PD ON THIS SHIFT BUT MDLS ARE TOO COMPELLING. IN
ADDTN...ALL SURROUNDING OFFICES ADJOINING OUR ZNS HAVE A POP IN FOR
MON. WE WL GO AHEAD AND ADD A 30 POP FOR TSRA FOR ALL AREAS MON EXCEPT
RIGHT ALG THE BAY WHERE ANY SCT/ISOLD CNVCTN WOULD HOLD OFF TIL 3RD PD.
MID SHIFT CAN EXPAND THE POP EWD FOR MON EVE IF 00Z GUIDANCE COMPELLS
THEM TO DO SO.

850MB TEMPS COOL A COUPLE OF DEG ON MON WHICH WHEN COMBINED WITH CLDNS
FROM WKNG SHRTWV MAY HOLD TEMPS DOWN A DEG OR TWO FROM TDAS NUMBERS.
RIGHT NOW WL NOT TINKER WITH THE MAX TEMPS AND WL PASS ALG OUR THOUGHTS
TO THE MID SHIFT.

NO 3RD OR 4TH PD CHGS.

.LWX...NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 10:09 PM EDTSevere Thunderstorm WarningLWXShenandoah51 min
May 7, 10:55 PM EDTSevere Thunderstorm WarningLWXShenandoah, Warren50 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.