Alert archive / Virginia / Flood Watches in 2013

Flood Watch 5, NWS Blacksburg, VA

June 6, 201331 counties in Virginia; 6 counties in North Carolina

NWS Blacksburg, VA issued this flood watch at Jun 6, 2013, 1:13 PM EDT for 31 counties in Virginia; 6 counties in North Carolina. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Jun 6, 2013, 1:13 PM EDT (17:13 UTC)
Expired: Jun 7, 2013, 7:01 PM EDT
In force: 30 hr
Issued by: NWS Blacksburg, VA
Flood severity: None

All 37 counties

Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Alleghany County, VA, Amherst County, VA, Appomattox County, VA, Bath County, VA, Bedford 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, Halifax County, VA, Henry County, VA, Montgomery County, VA, Patrick County, VA, Pittsylvania County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 39 km from the middle of the area, began a volume at 17:16 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 12:00Z, 5.2 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-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: 22 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 500 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 141 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 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 flood watch went out at Jun 6, 1:05 PM EDT, 8 minutes earlier.

Area forecast discussion, Jun 6, 1:05 PM EDT, 8 minutes before

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Hazardous weather outlook, Jun 6, 3:42 AM EDT, 9 hours 31 minutes before

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In the hours before

Local storm report, Jun 6, 9:28 AM EDT, 3 hours 45 minutes before

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Local storm report, Jun 6, 10:59 AM EDT, 2 hours 14 minutes before

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Local storm report, Jun 6, 12:11 PM EDT, 1 hour 2 minutes before

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Local storm report, Jun 6, 12:30 PM EDT, 43 minutes before

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Local storm report, Jun 6, 12:40 PM EDT, 33 minutes before

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Local storm report, Jun 6, 1:05 PM EDT, 8 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 6, 3:35 AM EDT	Special Weather Statement	RNK	Floyd, Franklin, Henry, Patrick, City of Martinsville	55 min
Jun 6, 4:22 AM EDT	Special Weather Statement	RNK	Bedford, Craig, Floyd, Franklin, Giles, Montgomery and 5 more	53 min
Jun 6, 5:29 AM EDT	Special Weather Statement	RNK	Craig, Franklin, Roanoke, City of Roanoke, City of Salem	61 min
Jun 6, 12:31 PM EDT	Areal Flood Advisory	RNK	Carroll	6 hr
Jun 6, 3:05 PM EDT	Areal Flood Advisory	RNK	Patrick	115 min
Jun 6, 4:10 PM EDT	Areal Flood Advisory	RNK	Henry, Pittsylvania, City of Danville, City of Martinsville	3 hr
Jun 6, 4:42 PM EDT	Areal Flood Warning	RNK	Amherst, Bedford, Botetourt, Floyd, Franklin, Montgomery and 6 more	3 hr
Jun 6, 5:46 PM EDT	Areal Flood Warning	RNK	Amherst, Campbell, City of Lynchburg	3 hr
Jun 6, 7:48 PM EDT	Areal Flood Advisory	RNK	Grayson, Wythe	3 hr
Jun 6, 2:33 PM EDT	Special Weather Statement	RNK	Ashe	57 min

Nearby

Flood Watches in Virginia, 2013 Flood Watches in North Carolina, 2013 Every 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.