Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

July 17, 2021Bland County, Giles County, Tazewell County, Virginia; Mercer County, West Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 17, 2021, 10:29 PM EDT for Bland County, Giles County, Tazewell County, Virginia; Mercer County, West Virginia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 17, 2021, 10:29 PM EDT (02:29 UTC)
Expired: Jul 17, 2021, 11:00 PM EDT
In force: 31 min
Issued by: NWS Blacksburg, VA

Counties Bland County, VA, Giles County, VA, Tazewell County, VA, Mercer County, WV

The radar

The Roanoke radar (KFCX), 91 km from the middle of the area, began a volume at 02:29 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, 2.5 hours before the alert went out and 156 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: 239 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1265 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 17, 9:33 PM EDT, 56 minutes earlier.

Area forecast discussion, Jul 17, 9:33 PM EDT, 56 minutes before

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Hazardous weather outlook, Jul 17, 9:08 PM EDT, 1 hour 21 minutes before

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In the hours before

Local storm report, Jul 17, 9:26 PM EDT, 1 hour 3 minutes before

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Local storm report, Jul 17, 9:40 PM EDT, 49 minutes before

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Local storm report, Jul 17, 9:41 PM EDT, 48 minutes before

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Local storm report, Jul 17, 9:42 PM EDT, 47 minutes before

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Local storm report, Jul 17, 10:12 PM EDT, 17 minutes before

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Special weather statement, Jul 17, 10:29 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
Jul 17, 8:14 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania, City of Martinsville	41 min
Jul 17, 8:42 PM EDT	Severe Thunderstorm Warning	RNK	Henry	63 min
Jul 17, 8:54 PM EDT	Special Weather Statement	RNK	Tazewell	36 min
Jul 17, 10:04 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax, Pittsylvania	56 min
Jul 18, 2:52 PM EDT	Special Weather Statement	RNK	Patrick	23 min
Jul 18, 3:05 PM EDT	Special Weather Statement	RNK	City of Martinsville	25 min
Jul 18, 3:20 PM EDT	Areal Flood Advisory	RNK	Carroll	83 min
Jul 18, 3:24 PM EDT	Areal Flood Advisory	RNK	Carroll	3 hr
Jul 18, 3:29 PM EDT	Special Weather Statement	RNK	Smyth	31 min
Jul 18, 3:33 PM EDT	Special Weather Statement	RNK	City of Danville	27 min
Jul 18, 3:53 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick	37 min
Jul 18, 4:03 PM EDT	Special Weather Statement	RNK	Smyth	27 min
Jul 18, 4:05 PM EDT	Special Weather Statement	RNK	City of Danville	25 min
Jul 18, 4:09 PM EDT	Special Weather Statement	RNK	Patrick	36 min
Jul 18, 4:12 PM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, City of Galax	112 min
Jul 18, 4:19 PM EDT	Special Weather Statement	RNK	City of Galax	26 min
Jul 18, 4:23 PM EDT	Special Weather Statement	RNK	Henry	37 min
Jul 18, 4:43 PM EDT	Flash Flood Warning	RNK	Carroll	4 hr
Jul 18, 5:11 PM EDT	Special Weather Statement	RNK	Carroll	34 min
Jul 18, 5:38 PM EDT	Special Weather Statement	RNK	Charlotte	37 min
Jul 18, 6:20 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte	40 min
Jul 17, 9:18 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	57 min
Jul 18, 2:42 PM EDT	Special Weather Statement	RNK	Ashe	33 min
Jul 18, 3:11 PM EDT	Special Weather Statement	RNK	Wilkes	34 min
Jul 18, 3:36 PM EDT	Special Weather Statement	RNK	Surry	24 min
Jul 18, 3:50 PM EDT	Special Weather Statement	RNK	Surry	25 min
Jul 18, 3:58 PM EDT	Special Weather Statement	RNK	Surry	32 min
Jul 18, 4:27 PM EDT	Special Weather Statement	RNK	Stokes	33 min
Jul 18, 4:53 PM EDT	Special Weather Statement	RNK	Caswell	37 min
Jul 18, 5:06 PM EDT	Special Weather Statement	RNK	Rockingham, Stokes	24 min
Jul 18, 5:30 PM EDT	Special Weather Statement	RNK	Rockingham	30 min

Nearby

Special Weather Statements in Virginia, 2021 Special Weather Statements in West Virginia, 2021 Every special weather statement in 2021

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.