Alert archive / Virginia / Flash Flood Warnings in 2010

Flash Flood Warning 54, NWS Blacksburg, VA

June 13, 2010Tazewell County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 13, 2010, 7:41 AM EDT for Tazewell County, Virginia. It was in force for 4 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 13, 2010, 7:41 AM EDT (11:41 UTC)
Expired: Jun 13, 2010, 11:30 AM EDT
In force: 4 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 11:41 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 00:00Z, 11.7 hours before the alert went out and 183 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: 949 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 134 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

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 13, 7:28 AM EDT, 13 minutes earlier.

Area forecast discussion, Jun 13, 7:28 AM EDT, 13 minutes before

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Hazardous weather outlook, Jun 13, 6:33 AM EDT, 1 hour 8 minutes before

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In the hours before

Local storm report, Jun 13, 5:13 AM EDT, 2 hours 28 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 12, 8:47 PM EDT	Special Weather Statement	RNK	Smyth, Wythe	28 min
Jun 12, 9:10 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Wythe	6 hr
Jun 12, 9:26 PM EDT	Special Weather Statement	RNK	Craig	64 min
Jun 12, 9:41 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, City of Galax	34 min
Jun 12, 11:08 PM EDT	Flash Flood Warning	RNK	Bland	6 hr
Jun 12, 11:23 PM EDT	Special Weather Statement	RNK	Bland	67 min
Jun 13, 1:58 AM EDT	Flash Flood Warning	RNK	Tazewell	6 hr
Jun 13, 11:24 AM EDT	Flash Flood Watch	RNK	Alleghany, Bath, Bland, Carroll, Craig, Floyd and 10 more	9 hr
Jun 13, 11:33 AM EDT	Flash Flood Warning	RNK	Tazewell	6 hr
Jun 13, 12:17 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Wythe	6 hr
Jun 13, 2:17 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick, Pittsylvania, City of Martinsville	58 min
Jun 13, 3:02 PM EDT	Special Weather Statement	RNK	City of Danville	28 min
Jun 13, 4:08 PM EDT	Special Weather Statement	RNK	Smyth	37 min
Jun 13, 4:10 PM EDT	Special Weather Statement	RNK	Halifax	35 min
Jun 13, 6:15 PM EDT	Areal Flood Warning	RNK	Smyth	3 hr
Jun 12, 10:32 PM EDT	Special Weather Statement	RNK	Alleghany, Ashe, Surry, Wilkes, Yadkin	58 min
Jun 12, 11:31 PM EDT	Special Weather Statement	RNK	Stokes	59 min
Jun 12, 11:50 PM EDT	Special Weather Statement	RNK	Rockingham	55 min
Jun 13, 1:45 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	60 min
Jun 13, 2:41 PM EDT	Severe Thunderstorm Warning	RNK	Yadkin	48 min
Jun 13, 2:49 PM EDT	Special Weather Statement	RNK	Watauga	26 min
Jun 13, 2:52 PM EDT	Special Weather Statement	RNK	Rockingham	38 min
Jun 13, 3:32 PM EDT	Special Weather Statement	RNK	Caswell	28 min
Jun 13, 3:39 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	23 min
Jun 13, 4:58 AM EDT	Flash Flood Warning	RNK	Mercer	6 hr

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.