Alert archive / Virginia / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Blacksburg, VA

March 18, 2002Tazewell County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Mar 18, 2002, 12:36 AM EST for Tazewell County, Virginia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 18, 2002, 12:36 AM EST (05:36 UTC)
Expired
Mar 18, 2002, 3:30 AM EST
In force
3 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Tazewell County, VA

The radar

The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 05:37 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 5.6 hours before the alert went out and 188 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, Greensboro/Hi Pt, NC at 00:00Z on 2002-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 joules per kilogram.LCLEL10008507005003002001001 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, Greensboro/Hi Pt, NC at 00:00Z on 2002-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.1939587897Sfc1 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
5 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
418 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
235 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 
WGUS51 KRNK 180536
FFWRNK
VAC185-180830-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1236 AM EST MON MAR 18 2002

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  TAZEWELL COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 330 AM EST.

* AT 1236 AM EST...RADAR INDICATED HEAVY RAIN...WITH EMBEDDED        
  THUNDERSTORMS MOVING ACROSS TAZEWELL COUNTY.

LOCATIONS THREATENED BY HEAVY RAIN THROUGH 330 AM EST INCLUDE
  RICHLANDS...
  RAVEN...
  AREAS ALONG MILL CREEK...
  AREAS ALONG INDIAN CREEK...

RADAR ESTIMATES SHOW THAT BETWEEN TWO AND TWO AND A HALF INCHES OF 
RAIN HAS FALLEN IN THIS AREA SINCE SUNDAY EVENING. HEAVY RAINS WILL 
CONTINUE TO MOVE ACROSS THE CLINCH RIVER BASIN THROUGH 330 
AM...LEADING TO FLASH FLOODING OF SMALL STREAMS AND 
CREEKS...ESPECIALLY NEAR RICHLANDS.

<<CALL TO ACTION>>BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER
TO RECOGNIZE THE DANGERS OF FLASH FLOODS.

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


$$

05

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 11:15 PM ESTFlash Flood WarningRNKWythe4 hr
Mar 18, 12:46 AM ESTFlash Flood WarningRNKSmyth6 hr
Mar 18, 3:04 AM ESTFlash Flood WarningRNKTazewell, Wythe6 hr

Nearby

Flash Flood Warnings in Virginia, 2002Every flash flood 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.