Alert archive / Virginia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 86, NWS Blacksburg, VA

August 19, 2001Pulaski County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 19, 2001, 8:34 PM EDT for Pulaski County, Virginia. It was in force for 26 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: Aug 19, 2001, 8:34 PM EDT (00:34 UTC)
Expired: Aug 19, 2001, 9:00 PM EDT
In force: 26 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Pulaski County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 0.6 hours before the alert went out and 109 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: 1350 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

344 
WUUS51 KRNK 200036
SVRRNK
VAC155-200100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
834 PM EDT SUN AUG 19 2001

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PULASKI COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 900 PM EDT.

* AT 833 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM NEAR ALLISONIA...MOVING EAST AT 30 MPH.

WINDS UP TO 60 MILES AN HOUR CAN BE EXPECTED WITH THIS STORM.

SOME LOCATIONS THREATENED THROUGH 900 PM EDT INCLUDE
  ALLISONIA...
  CLAYTOR LAKE STATE PARK

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

.END
11
$$

11

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 Aug 19, 7:45 PM EDT, 49 minutes earlier.

Area forecast discussion, Aug 19, 7:45 PM EDT, 49 minutes before

AREA FORECAST DISCUSSION...UPDATED.
NATIONAL WEATHER SERVICE BLACKSBURG, VA
745 PM EDT SUN AUG 19 2001

WILL ISSUE AN UPDATE TO REMOVE SEVERE WEATHER WATCH
FROM SOUTHEAST WEST VIRGINIA. ALSO...WILL REMOVE
ENHANCED THUNDERSTORM WORDING FROM ZONES. UPDATE
WILL BE OUT ARD 8 PM. HAVE A GOOD NIGHT.

FCSTID = 7
ROA   66  85  61  85 /  30  30  10  10
LYH   65  85  62  85 /  30  30  10  10
DAN   69  88  65  86 /  30  30  10  10
BLF   62  75  57  77 /  40  30  10  10
LWB   57  74  55  76 /  40  30  10  10
BCB   62  79  58  78 /  40  10  10  10
TNB   63  77  58  77 /  40  10  10  10

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 10:58 PM EDT	Flash Flood Warning	RNK	Patrick	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.