Alert archive / Virginia / Areal Flood Warnings in 2016

Areal Flood Warning 9, NWS Blacksburg, VA

June 23, 2016Bath County, Virginia

NWS Blacksburg, VA issued this areal flood warning at Jun 23, 2016, 11:54 PM EDT for Bath County, Virginia. It was in force for 6 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, 2016, 11:54 PM EDT (03:54 UTC)
Expired: Jun 24, 2016, 5:45 AM EDT
In force: 6 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

County Bath County, VA

The radar

The Roanoke radar (KFCX), 124 km from the middle of the area, began a volume at 03:53 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, 3.9 hours before the alert went out and 98 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: 564 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 750 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 287 m²/s²
0-3 km storm-relative helicity: 326 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.9

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 Jun 23, 11:18 PM EDT, 36 minutes earlier.

Area forecast discussion, Jun 23, 11:18 PM EDT, 36 minutes before

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Hazardous weather outlook, Jun 23, 11:00 PM EDT, 54 minutes before

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In the hours before

Special weather statement, Jun 23, 10:56 PM EDT, 58 minutes before

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Local storm report, Jun 23, 11:05 PM EDT, 49 minutes before

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Local storm report, Jun 23, 11:12 PM EDT, 42 minutes before

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Local storm report, Jun 23, 11:17 PM EDT, 37 minutes before

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Local storm report, Jun 23, 11:30 PM EDT, 24 minutes before

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Local storm report, Jun 23, 11:54 PM EDT, 0 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 23, 8:12 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Floyd, Giles, Montgomery, Pulaski and 3 more	48 min
Jun 23, 8:15 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell	45 min
Jun 23, 8:28 PM EDT	Areal Flood Advisory	RNK	Montgomery, Roanoke, City of Radford, City of Roanoke, City of Salem	6 hr
Jun 23, 8:49 PM EDT	Areal Flood Advisory	RNK	Bedford	6 hr
Jun 23, 8:51 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Grayson, Pulaski, Smyth, Tazewell, Wythe	39 min
Jun 23, 9:10 PM EDT	Special Weather Statement	RNK	Floyd, Franklin, Pittsylvania	35 min
Jun 23, 9:29 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Patrick, Pulaski, Wythe, City of Galax	61 min
Jun 23, 9:46 PM EDT	Special Weather Statement	RNK	Halifax, Henry, Patrick, Pittsylvania, City of Danville, City of Martinsville	44 min
Jun 23, 9:56 PM EDT	Flash Flood Warning	RNK	Halifax, Pittsylvania, City of Danville	6 hr
Jun 23, 10:35 PM EDT	Special Weather Statement	RNK	City of Danville	55 min
Jun 23, 11:12 PM EDT	Areal Flood Warning	RNK	Alleghany, City of Covington	18 hr
Jun 24, 11:32 AM EDT	Special Weather Statement	RNK	Alleghany	58 min
Jun 24, 12:48 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	57 min
Jun 24, 6:36 PM EDT	Areal Flood Advisory	RNK	City of Roanoke	114 min
Jun 23, 9:15 PM EDT	Special Weather Statement	RNK	Rockingham	30 min
Jun 23, 10:07 PM EDT	Special Weather Statement	RNK	Caswell	23 min
Jun 23, 10:30 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	60 min
Jun 23, 10:56 PM EDT	Special Weather Statement	RNK	Watauga, Wilkes	64 min
Jun 23, 9:29 PM EDT	Areal Flood Warning Emergency	RNK	Greenbrier	6 hr
Jun 24, 3:29 AM EDT	Areal Flood Warning	RNK	Greenbrier	6 hr
Jun 24, 9:28 AM EDT	Areal Flood Warning	RNK	Greenbrier	9 hr
Jun 24, 12:38 PM EDT	Special Weather Statement	RNK	Greenbrier	37 min
Jun 24, 4:08 PM EDT	Special Weather Statement	RNK	Greenbrier	52 min
Jun 24, 6:30 PM EDT	Areal Flood Warning	RNK	Greenbrier	24 hr

Nearby

Areal Flood Warnings in Virginia, 2016 Every areal flood warning in 2016

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.