Alert archive / Virginia / Flash Flood Warnings in 1999

Flash Flood Warning 12, NWS Blacksburg, VA

July 24, 1999Giles County, Virginia; Monroe County, West Virginia

NWS Blacksburg, VA issued this flash flood warning at Jul 24, 1999, 5:12 PM EDT for Giles County, Virginia; Monroe County, West Virginia. It was in force for 58 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: Jul 24, 1999, 5:12 PM EDT (21:12 UTC)
Expired: Jul 24, 1999, 6:10 PM EDT
In force: 58 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

Counties Giles County, VA, Monroe County, WV

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 9.2 hours before the alert went out and 103 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: 650 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 24, 2:35 PM EDT, 2 hours 37 minutes earlier.

Area forecast discussion, Jul 24, 2:35 PM EDT, 2 hours 37 minutes before

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In the hours before

Special weather statement, Jul 24, 1:45 PM EDT, 3 hours 27 minutes before

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Local storm report, Jul 24, 3:21 PM EDT, 1 hour 51 minutes before

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Local storm report, Jul 24, 3:21 PM EDT, 1 hour 51 minutes before

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Local storm report, Jul 24, 4:10 PM EDT, 1 hour 2 minutes before

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Local storm report, Jul 24, 4:48 PM EDT, 24 minutes before

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Local storm report, Jul 24, 4:48 PM EDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
448 PM EDT SAT JUL 24 1999

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0152 PM    SE WYTHEVILLE             VA   WIND DAMAGE
07/24/99   WYTHE                          SHERIFFS OFFICE REPORTED A
                                          TREE DOWN SOUTHEAST OF
                                          WYTHEVILLE

PMC/MJB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 12:45 PM EDT	Flash Flood Warning	RNK	Tazewell	2 hr
Jul 24, 1:40 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Wythe	50 min
Jul 24, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	50 min
Jul 24, 3:02 PM EDT	Severe Thunderstorm Warning	RNK	Giles	48 min
Jul 24, 3:35 PM EDT	Flash Flood Warning	RNK	Buckingham	60 min
Jul 24, 3:45 PM EDT	Flash Flood Warning	RNK	Giles	90 min
Jul 24, 7:41 PM EDT	Flash Flood Warning	RNK	Buckingham	119 min
Jul 23, 8:18 PM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry	32 min
Jul 24, 1:32 PM EDT	Severe Thunderstorm Warning	RNK	Surry	48 min
Jul 24, 2:46 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes	34 min
Jul 24, 3:08 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham	47 min
Jul 24, 3:49 PM EDT	Severe Thunderstorm Warning	RNK	Summers	51 min

Nearby

Flash Flood Warnings in Virginia, 1999 Flash Flood Warnings in West Virginia, 1999 Every flash flood warning in 1999

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.