Alert archive / Virginia / Areal Flood Warnings in 2010

Areal Flood Warning 21, NWS Blacksburg, VA

January 25, 20107 counties in Virginia

NWS Blacksburg, VA issued this areal flood warning at Jan 25, 2010, 10:39 AM EST for 7 counties in 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: Jan 25, 2010, 10:39 AM EST (15:39 UTC)
Expired: Jan 25, 2010, 2:30 PM EST
In force: 4 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Botetourt County, VA, City of Buena Vista, VA, City of Lexington, VA, City of Roanoke, VA, City of Salem, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 73 km from the middle of the area, began a volume at 15:39 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, 3.7 hours before the alert went out and 161 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: -129 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 areal 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 areal flood warning went out at Jan 25, 10:19 AM EST, 20 minutes earlier.

Area forecast discussion, Jan 25, 10:19 AM EST, 20 minutes before

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Hazardous weather outlook, Jan 25, 6:57 AM EST, 3 hours 42 minutes before

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In the hours before

Local storm report, Jan 25, 7:54 AM EST, 2 hours 45 minutes before

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Local storm report, Jan 25, 8:15 AM EST, 2 hours 24 minutes before

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Local storm report, Jan 25, 8:31 AM EST, 2 hours 8 minutes before

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Local storm report, Jan 25, 8:43 AM EST, 1 hour 56 minutes before

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Local storm report, Jan 25, 9:00 AM EST, 1 hour 39 minutes before

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Local storm report, Jan 25, 9:27 AM EST, 1 hour 12 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
Jan 24, 7:57 PM EST	Flash Flood Warning	RNK	Tazewell	6 hr
Jan 24, 8:06 PM EST	Flash Flood Warning	RNK	Carroll, Grayson, City of Galax	6 hr
Jan 24, 9:10 PM EST	Flash Flood Warning	RNK	Patrick	6 hr
Jan 24, 10:26 PM EST	Flash Flood Warning	RNK	Franklin, Henry, City of Martinsville	6 hr
Jan 24, 10:35 PM EST	Flash Flood Warning	RNK	Alleghany, Bath, City of Covington	6 hr
Jan 24, 10:53 PM EST	Flash Flood Warning	RNK	Botetourt, Roanoke, Rockbridge, City of Buena Vista, City of Lexington, City of Roanoke and 1 more	6 hr
Jan 24, 11:09 PM EST	Flash Flood Warning	RNK	Amherst, Bedford, City of Lynchburg, City of Roanoke	6 hr
Jan 25, 12:14 AM EST	Flash Flood Warning	RNK	Campbell, Pittsylvania, City of Danville	6 hr
Jan 25, 1:45 AM EST	Flash Flood Warning	RNK	Appomattox, Buckingham	4 hr
Jan 25, 1:50 AM EST	Areal Flood Warning	RNK	Carroll, Grayson, City of Galax	6 hr
Jan 25, 2:54 AM EST	Areal Flood Warning	RNK	Patrick	6 hr
Jan 25, 4:22 AM EST	Areal Flood Warning	RNK	Craig, Giles, Montgomery	6 hr
Jan 25, 4:27 AM EST	Areal Flood Warning	RNK	Franklin, Henry, City of Martinsville	6 hr
Jan 25, 4:28 AM EST	Areal Flood Warning	RNK	Alleghany, Bath, City of Covington	6 hr
Jan 25, 4:33 AM EST	Areal Flood Warning	RNK	Bedford, Botetourt, Craig, Roanoke, Rockbridge, City of Buena Vista and 3 more	6 hr
Jan 25, 5:13 AM EST	Areal Flood Warning	RNK	Amherst, Bedford, City of Lynchburg	6 hr
Jan 25, 5:48 AM EST	River Flood Warning	RNK	Campbell, Pittsylvania	28 hr
Jan 25, 5:48 AM EST	River Flood Warning	RNK	Campbell, Charlotte, Halifax	35 hr
Jan 25, 6:07 AM EST	Areal Flood Warning	RNK	Campbell, Pittsylvania, City of Danville	6 hr
Jan 25, 6:10 AM EST	Areal Flood Warning	RNK	Appomattox, Buckingham	6 hr
Jan 25, 7:42 AM EST	Areal Flood Warning	RNK	Carroll, Grayson, City of Galax	6 hr
Jan 25, 7:53 AM EST	Areal Flood Warning	RNK	Tazewell	6 hr
Jan 25, 8:43 AM EST	Areal Flood Warning	RNK	Pulaski, Wythe	6 hr
Jan 25, 10:00 AM EST	Areal Flood Warning	RNK	Craig, Giles, Montgomery	4 hr
Jan 25, 10:32 AM EST	Areal Flood Warning	RNK	Alleghany, Bath, City of Covington	16 hr
Jan 25, 11:18 AM EST	Areal Flood Warning	RNK	Amherst, Bedford, City of Lynchburg	4 hr
Jan 25, 12:00 PM EST	Areal Flood Warning	RNK	Campbell, Pittsylvania	20 hr
Jan 25, 12:14 PM EST	Areal Flood Warning	RNK	Appomattox	3 hr
Jan 25, 2:25 PM EST	Areal Flood Warning	RNK	Alleghany, Bedford, Botetourt, Montgomery, Roanoke, Rockbridge and 4 more	24 hr
Jan 25, 4:56 PM EST	Wind Advisory	RNK	Carroll, Grayson, Pulaski, Smyth, Tazewell, Wythe and 2 more	11 hr
Jan 24, 7:07 PM EST	Flash Flood Warning	RNK	Alleghany, Ashe, Watauga, Wilkes	12 hr
Jan 24, 9:03 PM EST	Flash Flood Warning	RNK	Surry, Wilkes, Yadkin	6 hr
Jan 24, 10:22 PM EST	Flash Flood Warning	RNK	Stokes	6 hr
Jan 24, 11:53 PM EST	Flash Flood Warning	RNK	Rockingham	6 hr
Jan 25, 2:50 AM EST	Areal Flood Warning	RNK	Surry, Wilkes, Yadkin	6 hr
Jan 25, 4:15 AM EST	Areal Flood Warning	RNK	Stokes	6 hr
Jan 25, 5:50 AM EST	Areal Flood Warning	RNK	Rockingham	6 hr
Jan 25, 9:44 AM EST	Areal Flood Warning	RNK	Surry	3 hr
Jan 25, 11:46 AM EST	Areal Flood Warning	RNK	Rockingham	28 hr

Nearby

Areal Flood Warnings in Virginia, 2010 Every areal 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.