Alert archive / Virginia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 245, NWS Blacksburg, VA

November 11, 2002Franklin County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Nov 11, 2002, 1:07 AM EST for Franklin County, Virginia. It was in force for 23 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: Nov 11, 2002, 1:07 AM EST (06:07 UTC)
Expired: Nov 11, 2002, 1:30 AM EST
In force: 23 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Franklin County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 6.1 hours before the alert went out and 41 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: 407 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 214 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

878 
WUUS51 KRNK 110607
SVRRNK
VAC067-110630-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
107 AM EST MON NOV 11 2002

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 130 AM EST.

* AT 106 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES NORTHEAST OF FERRUM...MOVING NORTHEAST
  AT 30 MPH.

WINDS UP TO 60 MPH CAN BE EXPECTED WITH THIS STORM.

* SOME LOCATIONS THREATENED THROUGH 130 AM EST INCLUDE
  FERRUM...
  ROCKY MOUNT...

<<CALL TO ACTION>>IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE
A STURDY SHELTER.

REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

RELAY SEVERE WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

$$

LAT...LON 3684 7995 3695 8009 3722 7979 3719 7976
          3719 7971 3715 7967 3707 7962

05

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 Blacksburg, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 10, 9:00 PM EST, 4 hours 7 minutes earlier.

Area forecast discussion, Nov 10, 9:00 PM EST, 4 hours 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BLACKSBURG, VA
900 PM EST SUN NOV 10 2002

CURRENT FORECAST IN GOOD SHAPE THIS EVENING IN ADVANCE OF APCHG
SCTD/LINE OF TSRA ACROSS TN/KY. EXPECT AS AREAS OF CONVECTION MOVE
OUT OF DEEPER THETA SUPPORT ALONG/WEST OF THE APPALACHIANS...AND
INTO MORE STAB/CAP...WILL SEE INTENSITY WEAKEN LATER. HOWEVER GIVEN
STRONG WINDS/SHEAR ALOFT OFF RNK RAOB...APPEARS STILL CONCERN WITH
WIND POTENTIAL ESPCLY WRN SLOPES(WHERE SPC MODERATE RISK EXISTS) AS
LINE MOVES IN AFTER MIDNIGHT. OTRW WEAK RIBBON OF MCON/INSTAB EAST
OF THE BLUE RIDGE LIKELY TO PROMPT SOME ADDITIONAL WIDELY SCTD SHRA
BEFORE MAIN ACTION ARRIVES THERE TOWARD DAYBREAK. THUS GIVEN GOING
HIGH POPS...PLAN TO UPDATE TO ADD DAMAGING WINDS TO WEST AND ADJUST
WORDING A BIT. MAY ALSO BUMP UP WINDS AND TEMPS A NOTCH ESPCLY OUT
EAST WHERE WAA AND MIXING WONT ALLOW MUCH FALL TIL SHOWERS ARRIVE
TOWARD MORNING.

.RNK...
NC...NONE.
VA...NONE.
WV...NONE.

JH

Hazardous weather outlook, Nov 10, 12:10 PM EST, 12 hours 57 minutes before

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-101915-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
1210 PM EST SUN NOV 10 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST WEST VIRGINIA...
WESTERN AND CENTRAL VIRGINIA...AS WELL AS NORTHWEST NORTH CAROLINA.

.DAY ONE...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING AND
OVERNIGHT ACROSS THE MOUNTAINS AND FOOTHILLS OF VIRGINIA AND NORTH
CAROLINA...AND ACROSS ALL OF SOUTHEAST WEST VIRGINIA. PLEASE SEE OUR
SEVERE WEATHER OUTLOOK...WBCSPSRNK...FOR MORE DETAILS.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS EVENING AND OVERNIGHT.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

AMS

In the hours before

Special weather statement, Nov 10, 11:11 PM EST, 1 hour 56 minutes before

VAZ007-009-110500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1111 PM EST SUN NOV 10 2002

THUNDERSTORMS WITH BRIEF HEAVY RAIN...AND WIND GUSTS TO 45 MPH WILL
MOVE INTO THE RICHLANDS...AND SALTVILLE AREA BY 1140 PM. THESE
STORMS WILL REACH TAZEWELL AND MARION TOWARD MIDNIGHT.

REMEMBER...A TORNADO WATCH IS IN EFFECT UNTIL 400 AM. KEEP TUNED TO
NOAA WEATHER RADIO...OR LOCAL MEDIA FOR ANY UPDATES...OR POSSIBLE
WARNINGS.

WHP

Special weather statement, Nov 11, 12:36 AM EST, 31 minutes before

VAZ032>035-045>047-110630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1236 AM EST MON NOV 11 2002

A LINE OF HEAVY SHOWERS AND THUNDERSTORMS ARE MOVING TO THE
NORTHEAST AT 40 TO 50 MPH.  THESE STORMS HAVE A HISTORY OF PRODUCING
HEAVY DOWNPOURS OF AN INCH TO AN INCH AND A HALF WITHIN AN HOUR.
THESE STORMS WILL BE MOVING INTO SOUTHERN FRANKLIN COUNTY BY 1:00
AM...SOUTHEASTERN BEDFORD  AND SOUTHERN CAMPBELL COUNTY BY 1:30
AM...THEN INTO AMHERST...APPOMATTOX AND BUCKINGHAM COUNTY BY 2:00
AM.  HEAVY RAINFALL IN A SHORT AMOUNT OF TIME WILL PRODUCE PONDING
OF WATER ON ROADWAYS.

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 11, 12:01 AM EST	Severe Thunderstorm Warning	RNK	Patrick	29 min
Nov 11, 12:31 AM EST	Severe Thunderstorm Warning	RNK	Smyth, Tazewell	44 min
Nov 11, 1:38 AM EST	Severe Thunderstorm Warning	RNK	Bedford, Franklin	37 min
Nov 11, 2:08 AM EST	Severe Thunderstorm Warning	RNK	Smyth	37 min
Nov 11, 2:24 AM EST	Severe Thunderstorm Warning	RNK	Wythe	51 min
Nov 11, 2:37 AM EST	Severe Thunderstorm Warning	RNK	Buckingham	23 min
Nov 11, 3:01 AM EST	Severe Thunderstorm Warning	RNK	Montgomery, Pulaski, City of Radford	29 min
Nov 11, 3:37 AM EST	Severe Thunderstorm Warning	RNK	Roanoke, City of Roanoke, City of Salem	23 min
Nov 11, 3:54 AM EST	Severe Thunderstorm Warning	RNK	Bedford	21 min
Nov 11, 4:29 AM EST	Severe Thunderstorm Warning	RNK	Amherst, Bedford, City of Lynchburg	31 min
Nov 11, 6:53 AM EST	Severe Thunderstorm Warning	RNK	Campbell, City of Lynchburg	37 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2002 Every severe thunderstorm warning in 2002

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.