Alert archive / Virginia / Flash Flood Warnings in 2002

Flash Flood Warning 22, NWS Blacksburg, VA

July 2, 2002Montgomery County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jul 2, 2002, 4:07 PM EDT for Montgomery 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: Jul 2, 2002, 4:07 PM EDT (20:07 UTC)
Expired: Jul 2, 2002, 7:00 PM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Montgomery County, VA

The radar

The Roanoke radar (KFCX), 19 km from the middle of the area, began a volume at 20:11 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, 8.1 hours before the alert went out and 79 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: 1023 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 53 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 022007
FFWRNK
VAC121-022300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
407 PM EDT TUE JUL 2 2002

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

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

* UNTIL 700 PM EDT

* AT 407 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A 
STATIONARY THUNDERSTORM WITH TORRENTIAL RAINFALL OVER NORTHERN 
MONTGOMERY COUNTY. THIS STORM HAS ALREADY DUMPED AS MUCH AS 2 
INCHES...AND AN ADDITIONAL 2 INCHES IS POSSIBLE THROUGH 5 PM. THIS 
WILL LIKELY CAUSE FLASH FLOODING ALONG CRAIG CREEK AND MILL CREEK.

OTHER LOCATIONS AFFECTED BY THIS THIS HEAVY RAIN INCLUDE...CALDWELL 
FIELDS CAMPGROUND AND US ROUTE 460.

<<CALL TO ACTION>>DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE
WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW
YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

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

$$

06

LAT...LON 3729 8053 3716 8037 3724 8026 3733 8034

1 follow-up statement

000 
WGUS71 KRNK 022156
FFSRNK
VAC121-022245-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
555 PM EDT TUE JUL 2 2002

...FLASH FLOOD WARNING CANCELLED FOR NORTHERN MONTGOMERY COUNTY...

NATIONAL WEATHER SERVICE RADAR INDICATED THE RAINFALL HAS ENDED
ACROSS THE WARNED AREA...AND THE FLOOD THREAT WAS DIMINISHING. SOME
MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS FLOODING HAS
ENDED. THUS...THE FLASH FLOOD WARNING IS BEING CANCELED.

AT 555 PM EDT...A WEATHER SPOTTER REPORTED 4 INCHES OF RAIN ON BRUSH 
MOUNTAIN. RADAR INDICATES MUCH OF THIS RAINFALL FELL IN THE MILL 
CREEK BASIN. FLOODING WAS LIKELY ALONG MILL CREEK...BUT WATERS 
SHOULD BE RECEDING. MOTORISTS SHOULD WATCH OUT FOR WASHED OUT GRAVEL 
ROADS. 

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.

JJ

$$

LAT...LON 3727 8022 3733 8031 3724 8054 3717 8039

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 3:08 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, City of Radford	37 min
Jul 2, 3:12 PM EDT	Severe Thunderstorm Warning	RNK	Bland	33 min
Jul 2, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Craig	27 min
Jul 2, 3:20 PM EDT	Severe Thunderstorm Warning	RNK	Giles	25 min
Jul 2, 3:51 PM EDT	Severe Thunderstorm Warning	RNK	Pulaski	24 min
Jul 2, 3:57 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	33 min
Jul 2, 3:57 PM EDT	Severe Thunderstorm Warning	RNK	Craig	48 min
Jul 2, 4:36 PM EDT	Severe Thunderstorm Warning	RNK	Bath	24 min
Jul 2, 4:40 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt	50 min
Jul 2, 4:42 PM EDT	Severe Thunderstorm Warning	RNK	Wythe	33 min
Jul 2, 4:46 PM EDT	Severe Thunderstorm Warning	RNK	Carroll	29 min
Jul 2, 4:57 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, City of Galax	48 min
Jul 2, 5:09 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, Roanoke, City of Salem	36 min
Jul 2, 5:19 PM EDT	Severe Thunderstorm Warning	RNK	Rockbridge, City of Lexington	41 min
Jul 2, 5:29 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt	31 min
Jul 2, 6:09 PM EDT	Flash Flood Warning	RNK	Rockbridge, City of Lexington	111 min
Jul 2, 6:28 PM EDT	Severe Thunderstorm Warning	RNK	Henry	32 min
Jul 2, 7:10 PM EDT	Severe Thunderstorm Warning	RNK	Henry, City of Martinsville	35 min
Jul 2, 7:26 PM EDT	Severe Thunderstorm Warning	RNK	Campbell	34 min

Nearby

Flash Flood Warnings in Virginia, 2002 Every 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.