Alert archive / Virginia / Flash Flood Warnings in 2010

Flash Flood Warning 58, NWS Blacksburg, VA

June 23, 2010Tazewell County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 23, 2010, 4:33 PM EDT 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: Jun 23, 2010, 4:33 PM EDT (20:33 UTC)
Expired: Jun 23, 2010, 7:17 PM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

County Tazewell County, VA

The radar

The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 20:34 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.6 hours before the alert went out and 322 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: 1095 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1079 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jun 23, 3:58 PM EDT, 35 minutes earlier.

Area forecast discussion, Jun 23, 3:58 PM EDT, 35 minutes before

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Hazardous weather outlook, Jun 23, 4:24 AM EDT, 12 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
424 AM EDT WED JUN 23 2010

NCZ001>003-018>020-VAZ007-009>020-022>024-032>035-WVZ042>045-240830-
ASHE-ALLEGHANY NC-SURRY-WATAUGA-WILKES-YADKIN-TAZEWELL-SMYTH-BLAND-
GILES-WYTHE-PULASKI-MONTGOMERY-GRAYSON-CARROLL-FLOYD-CRAIG-
ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-
BEDFORD-AMHERST-MERCER-SUMMERS-MONROE-GREENBRIER-
424 AM EDT WED JUN 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH
CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH
CENTRAL VIRGINIA...SOUTHWEST VIRGINIA...WEST CENTRAL VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

AN ISOLATED THUNDERSTORM IS POSSIBLE THIS AFTERNOON AND EARLY
EVENING...MAINLY ALONG THE BLUE RIDGE AND TO THE SOUTH OF HIGHWAY
460. ANY STORM THAT IS ABLE TO DEVELOP WILL HAVE THE POTENTIAL TO
PRODUCE A QUICK BURST OF STRONG WINDS...POSSIBLY TO SEVERE THRESHOLDS.
HEAVY RAIN AND FREQUENT LIGHTNING IS ALSO POSSIBLE WITH ANY STORM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ004>006-240830-
STOKES-ROCKINGHAM-CASWELL-
424 AM EDT WED JUN 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

THE AIR QUALITY ALERT REMAINS IN EFFECT THROUGH 9PM THIS EVENING.

IN ADDITION...ISOLATED THUNDERSTORMS LATE THIS AFTERNOON AND INTO
THE EARLY EVENING MAY BE CAPABLE OF PRODUCING A QUICK DOWNBURST
OF VERY STRONG WINDS...AS WELL AS HEAVY RAIN AND FREQUENT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

IN ADDITION TO ANOTHER CHANCE OF THUNDERSTORMS THURSDAY...HEAT
INDEX VALUES WILL REACH FROM 100 TO 105 DEGREES BY MID AFTERNOON.
CAUTION IS ADVISED IF YOU ARE PLANNING OUTDOOR ACTIVITIES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

VAZ043>047-058-059-240830-
HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
424 AM EDT WED JUN 23 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL VIRGINIA AND SOUTH
CENTRAL VIRGINIA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED THUNDERSTORMS LATE THIS AFTERNOON AND INTO
THE EARLY EVENING MAY BE CAPABLE OF PRODUCING A QUICK DOWNBURST
OF VERY STRONG WINDS...AS WELL AS HEAVY RAIN AND FREQUENT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

IN ADDITION TO ANOTHER CHANCE OF THUNDERSTORMS THURSDAY...HEAT
INDEX VALUES WILL REACH FROM 100 TO 105 DEGREES BY MID AFTERNOON.
CAUTION IS ADVISED IF YOU ARE PLANNING OUTDOOR ACTIVITIES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jun 23, 3:04 PM EDT, 1 hour 29 minutes before

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Special weather statement, Jun 23, 3:17 PM EDT, 1 hour 16 minutes before

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Special weather statement, Jun 23, 3:25 PM EDT, 1 hour 8 minutes before

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Special weather statement, Jun 23, 3:30 PM EDT, 1 hour 3 minutes before

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Local storm report, Jun 23, 4:16 PM EDT, 17 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 8:16 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	59 min
Jun 22, 8:36 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Tazewell	39 min
Jun 22, 9:16 PM EDT	Special Weather Statement	RNK	Wythe	29 min
Jun 22, 9:27 PM EDT	Special Weather Statement	RNK	Grayson	33 min
Jun 22, 9:47 PM EDT	Special Weather Statement	RNK	Pulaski	28 min
Jun 22, 10:10 PM EDT	Special Weather Statement	RNK	Floyd, Patrick, Pulaski	65 min
Jun 23, 12:33 PM EDT	Special Weather Statement	RNK	Floyd	57 min
Jun 23, 1:09 PM EDT	Special Weather Statement	RNK	Bland	66 min
Jun 23, 1:17 PM EDT	Special Weather Statement	RNK	Henry, Patrick, City of Martinsville	58 min
Jun 23, 1:50 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	55 min
Jun 23, 2:03 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	57 min
Jun 23, 2:07 PM EDT	Severe Thunderstorm Warning	RNK	Henry	53 min
Jun 23, 2:15 PM EDT	Special Weather Statement	RNK	Carroll	45 min
Jun 23, 2:35 PM EDT	Special Weather Statement	RNK	Grayson, Wythe, City of Galax	55 min
Jun 23, 3:25 PM EDT	Special Weather Statement	RNK	Tazewell	65 min
Jun 23, 3:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell	46 min
Jun 23, 4:14 PM EDT	Severe Thunderstorm Warning	RNK	Tazewell	49 min
Jun 23, 4:43 PM EDT	Special Weather Statement	RNK	Bland, Pulaski, Wythe	62 min
Jun 23, 5:34 PM EDT	Special Weather Statement	RNK	Floyd, Pulaski	41 min
Jun 23, 2:30 PM EDT	Special Weather Statement	RNK	Caswell	60 min
Jun 23, 2:45 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	60 min
Jun 23, 2:49 PM EDT	Special Weather Statement	RNK	Rockingham	56 min
Jun 23, 3:04 PM EDT	Special Weather Statement	RNK	Yadkin	26 min
Jun 23, 3:17 PM EDT	Special Weather Statement	RNK	Stokes	58 min
Jun 23, 3:30 PM EDT	Special Weather Statement	RNK	Alleghany	60 min
Jun 23, 4:31 PM EDT	Special Weather Statement	RNK	Yadkin	59 min
Jun 23, 4:34 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Yadkin	40 min

Nearby

Flash Flood Warnings in Virginia, 2010 Every flash flood warning in 2010

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.