Alert archive / Virginia / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 101, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 4, 2002, 4:46 PM EDT for Botetourt County, Virginia. It was in force for 29 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
- Jun 4, 2002, 4:46 PM EDT (20:46 UTC)
- Expired
- Jun 4, 2002, 5:15 PM EDT
- In force
- 29 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Botetourt County, VA
The radar
The Roanoke radar (KFCX), 72 km from the middle of the area, began a volume at 20:49 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.
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 8.8 hours before the alert went out and 48 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.
- Mixed-layer CAPE
- 503 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 867 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
092 WUUS51 KRNK 042046 SVRRNK VAC023-042115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BLACKSBURG VA 445 PM EDT TUE JUN 4 2002 THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL BOTETOURT COUNTY IN WEST CENTRAL VIRGINIA * UNTIL 515 PM EDT. * AT 444 PM EDT...RADAR AND SPOTTERS INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTHEAST OF TROUTVILLE...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO ONE INCH IN DIAMETER CAN BE EXPECTED WITH THIS STORM. SOME LOCATIONS THREATENED THROUGH 515 PM EDT INCLUDE TROUTVILLE... <<CALL TO ACTION>>LARGE HAIL AND...OR STRONG DAMAGING WINDS ARE LIKELY WITH THIS STORM. IN ADDITION...TORRENTIAL RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD RELAY SEVERE WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4. $$ 14
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 2:39 PM EDT | Severe Thunderstorm Warning | RNK | Grayson | 36 min |
| Jun 4, 3:03 PM EDT | Severe Thunderstorm Warning | RNK | Carroll | 57 min |
| Jun 4, 3:15 PM EDT | Severe Thunderstorm Warning | RNK | Grayson | 30 min |
| Jun 4, 3:28 PM EDT | Severe Thunderstorm Warning | RNK | Wythe | 47 min |
| Jun 4, 3:54 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt | 51 min |
| Jun 4, 4:24 PM EDT | Severe Thunderstorm Warning | RNK | Montgomery | 51 min |
| Jun 4, 4:36 PM EDT | Severe Thunderstorm Warning | RNK | Bedford | 39 min |
| Jun 4, 5:03 PM EDT | Severe Thunderstorm Warning | RNK | Roanoke | 42 min |
| Jun 4, 5:16 PM EDT | Severe Thunderstorm Warning | RNK | Bedford | 44 min |
| Jun 4, 5:28 PM EDT | Severe Thunderstorm Warning | RNK | Craig | 47 min |
| Jun 4, 7:41 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Appomattox, Bedford, Campbell, City of Lynchburg | 49 min |
| Jun 4, 7:58 PM EDT | Flash Flood Warning | RNK | Campbell, City of Lynchburg | 92 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2002Every 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; radar from the NEXRAD Level II archive.