Alert archive / Virginia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Blacksburg, VA

May 19, 2001Henry County, City of Martinsville, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 19, 2001, 6:07 PM EDT for Henry County, City of Martinsville, Virginia. It was in force for 38 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 19, 2001, 6:07 PM EDT (22:07 UTC)
Expired: May 19, 2001, 6:45 PM EDT
In force: 38 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

Counties City of Martinsville, VA, Henry County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.1 hours before the alert went out and 68 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: 11 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 1765 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -91 m²/s²
0-3 km storm-relative helicity: -80 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 KRNK 192208
SVRRNK

VAC089-690-192245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
607 PM EDT SAT MAY 19 2001

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HENRY COUNTY IN SOUTH CENTRAL VIRGINIA...
  MARTINSVILLE CITY IN SOUTH CENTRAL VIRGINIA...

* UNTIL 645 PM EDT.

* AT 605 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR BASSETT...MOVING SOUTHEAST AT 15 MPH.

SOME LOCATIONS THREATENED THROUGH 645 PM EDT INCLUDE
  BASSETT...
  COLLINSVILLE...
  MARTINSVILLE CITY...

<<CALL TO ACTION>>IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE
WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY.

.END
$$

02

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:12 PM EDT	Severe Thunderstorm Warning	RNK	Halifax	33 min
May 19, 3:54 PM EDT	Flash Flood Warning	RNK	Giles	3 hr
May 19, 4:21 PM EDT	Severe Thunderstorm Warning	RNK	Campbell	39 min
May 19, 4:28 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Pulaski	47 min
May 19, 4:41 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania	49 min
May 19, 5:00 PM EDT	Severe Thunderstorm Warning	RNK	Giles	30 min
May 19, 5:27 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	48 min
May 19, 5:30 PM EDT	Severe Thunderstorm Warning	RNK	Halifax	45 min
May 19, 5:42 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	33 min
May 19, 5:52 PM EDT	Flash Flood Warning	RNK	Halifax	113 min
May 19, 6:41 PM EDT	Flash Flood Warning	RNK	Henry, City of Martinsville	2 hr

Nearby

Severe Thunderstorm Warnings in Virginia, 2001 Every severe thunderstorm warning in 2001

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.