Alert archive / Virginia / Flash Flood Watches in 2013

Flash Flood Watch 5, NWS Blacksburg, VA

June 9, 201337 counties in Virginia; 9 counties in North Carolina; Mercer County, Monroe County, Summers County, West Virginia

NWS Blacksburg, VA issued this flash flood watch at Jun 9, 2013, 9:00 PM EDT for 37 counties in Virginia; 9 counties in North Carolina; Mercer County, Monroe County, Summers County, West Virginia. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued
Jun 9, 2013, 9:00 PM EDT (01:00 UTC)
Expired
Jun 10, 2013, 6:55 PM EDT
In force
22 hr
Issued by
NWS Blacksburg, VA
Flood severity
None
All 49 counties

Alleghany County, NC, Ashe County, NC, Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Bath County, VA, Bedford County, VA, Bland County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Carroll County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Covington, VA, City of Danville, VA, City of Galax, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Franklin County, VA, Giles County, VA, Grayson County, VA, Halifax County, VA, Henry County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 10 km from the middle of the area, began a volume at 01:02 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, 1.0 hours before the alert went out and 112 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 2013-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 619 joules per kilogram.LCLLFCEL10008507005003002001001 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 2013-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.193958Sfc1 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
619 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
879 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 watch went out at Jun 9, 3:14 PM EDT, 5 hours 46 minutes earlier.

Area forecast discussion, Jun 9, 3:14 PM EDT, 5 hours 46 minutes before
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Hazardous weather outlook, Jun 9, 3:25 PM EDT, 5 hours 35 minutes before
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In the hours before

Special weather statement, Jun 9, 8:01 PM EDT, 59 minutes before
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Special weather statement, Jun 9, 8:11 PM EDT, 49 minutes before
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Special weather statement, Jun 9, 8:13 PM EDT, 47 minutes before
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Special weather statement, Jun 9, 8:46 PM EDT, 14 minutes before
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Special weather statement, Jun 9, 8:53 PM EDT, 7 minutes before
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Special weather statement, Jun 9, 8:57 PM EDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 8:01 PM EDTSpecial Weather StatementRNKCraig, Roanoke, City of Salem59 min
Jun 9, 8:11 PM EDTSpecial Weather StatementRNKGiles, Montgomery, City of Radford64 min
Jun 9, 8:13 PM EDTSpecial Weather StatementRNKFloyd, Franklin, Montgomery, Roanoke, City of Roanoke, City of Salem62 min
Jun 9, 8:46 PM EDTSpecial Weather StatementRNKAlleghany, City of Covington44 min
Jun 9, 8:53 PM EDTSpecial Weather StatementRNKBotetourt, Rockbridge, City of Lexington37 min
Jun 9, 8:57 PM EDTSpecial Weather StatementRNKAmherst, City of Buena Vista33 min
Jun 9, 11:23 PM EDTSpecial Weather StatementRNKCharlotte, Halifax52 min
Jun 10, 12:12 AM EDTSpecial Weather StatementRNKCharlotte63 min
Jun 10, 4:32 AM EDTSpecial Weather StatementRNKCarroll, Grayson, Smyth, Wythe, City of Galax88 min
Jun 10, 4:36 AM EDTSpecial Weather StatementRNKAmherst, Bedford, Campbell, Rockbridge, City of Buena Vista, City of Lexington and 1 more84 min
Jun 10, 5:52 AM EDTSpecial Weather StatementRNKAmherst, Bedford, Campbell, Rockbridge, City of Buena Vista, City of Lexington and 1 more53 min
Jun 10, 9:21 AM EDTSpecial Weather StatementRNKPittsylvania24 min
Jun 10, 9:57 AM EDTSpecial Weather StatementRNKPittsylvania33 min
Jun 10, 12:38 PM EDTSpecial Weather StatementRNKHenry37 min
Jun 10, 1:39 PM EDTSpecial Weather StatementRNKCarroll36 min
Jun 10, 1:50 PM EDTSevere Thunderstorm WarningRNKCarroll, Floyd, Montgomery, Pulaski, Wythe40 min
Jun 10, 2:05 PM EDTSpecial Weather StatementRNKMontgomery, City of Radford25 min
Jun 10, 2:27 PM EDTSpecial Weather StatementRNKCraig, Montgomery, Roanoke33 min
Jun 10, 2:31 PM EDTSpecial Weather StatementRNKFloyd, City of Salem29 min
Jun 10, 2:50 PM EDTSpecial Weather StatementRNKBotetourt, City of Roanoke, City of Salem25 min
Jun 10, 3:08 PM EDTSpecial Weather StatementRNKBedford37 min
Jun 10, 3:15 PM EDTSevere Thunderstorm WarningRNKBedford, Botetourt45 min
Jun 10, 3:32 PM EDTSpecial Weather StatementRNKBedford43 min
Jun 10, 3:39 PM EDTSpecial Weather StatementRNKCity of Buena Vista36 min
Jun 10, 4:14 PM EDTSpecial Weather StatementRNKCity of Lynchburg31 min
Jun 10, 4:19 PM EDTSpecial Weather StatementRNKFranklin41 min
Jun 10, 5:13 PM EDTSevere Thunderstorm WarningRNKAppomattox, Campbell, Charlotte, Halifax, Pittsylvania47 min
Jun 10, 5:57 PM EDTSevere Thunderstorm WarningRNKAppomattox, Buckingham, Campbell, Charlotte48 min
Jun 10, 8:41 AM EDTSpecial Weather StatementRNKRockingham34 min
Jun 10, 12:14 PM EDTSpecial Weather StatementRNKStokes31 min
Jun 10, 12:48 PM EDTSpecial Weather StatementRNKStokes27 min

Nearby

Flash Flood Watches in Virginia, 2013Flash Flood Watches in North Carolina, 2013Flash Flood Watches in West Virginia, 2013Every flash flood watch in 2013

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.