Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

July 23, 2018Botetourt County, Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 23, 2018, 7:49 AM EDT for Botetourt County, Virginia. It was in force for 41 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 23, 2018, 7:49 AM EDT (11:49 UTC)
Expired: Jul 23, 2018, 8:30 AM EDT
In force: 41 min
Issued by: NWS Blacksburg, VA

County Botetourt County, VA

The radar

The Roanoke radar (KFCX), 82 km from the middle of the area, began a volume at 11:49 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, 11.8 hours before the alert went out and 38 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: 441 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 23, 7:42 AM EDT, 7 minutes earlier.

Area forecast discussion, Jul 23, 7:42 AM EDT, 7 minutes before

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Hazardous weather outlook, Jul 23, 6:36 AM EDT, 1 hour 13 minutes before

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In the hours before

Special weather statement, Jul 23, 7:49 AM 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 22, 8:31 PM EDT	Special Weather Statement	RNK	Halifax	29 min
Jul 22, 8:47 PM EDT	Severe Thunderstorm Warning	RNK	Halifax	42 min
Jul 22, 9:08 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Patrick, Pittsylvania, City of Danville, City of Martinsville	67 min
Jul 22, 9:53 PM EDT	Special Weather Statement	RNK	Bedford	37 min
Jul 22, 10:16 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	44 min
Jul 22, 10:56 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	49 min
Jul 22, 10:59 PM EDT	Special Weather Statement	RNK	Roanoke, City of Roanoke, City of Salem	46 min
Jul 22, 11:05 PM EDT	Special Weather Statement	RNK	Halifax	25 min
Jul 22, 11:12 PM EDT	Special Weather Statement	RNK	Charlotte	18 min
Jul 22, 11:14 PM EDT	Special Weather Statement	RNK	Buckingham	46 min
Jul 22, 11:38 PM EDT	Special Weather Statement	RNK	City of Lynchburg	37 min
Jul 22, 11:59 PM EDT	Special Weather Statement	RNK	Amherst	46 min
Jul 23, 12:03 AM EDT	Special Weather Statement	RNK	Buckingham	57 min
Jul 23, 12:12 AM EDT	Special Weather Statement	RNK	Amherst	33 min
Jul 23, 1:30 PM EDT	Special Weather Statement	RNK	Giles	45 min
Jul 23, 2:31 PM EDT	Special Weather Statement	RNK	Giles	59 min
Jul 23, 2:45 PM EDT	Flash Flood Watch	RNK	Amherst, Appomattox, Bedford, Botetourt, Buckingham, Campbell and 23 more	14 hr
Jul 23, 5:28 PM EDT	Special Weather Statement	RNK	City of Danville	32 min
Jul 23, 5:57 PM EDT	Special Weather Statement	RNK	Pittsylvania	33 min
Jul 23, 6:26 PM EDT	Special Weather Statement	RNK	Pittsylvania	34 min
Jul 23, 6:29 PM EDT	Special Weather Statement	RNK	Halifax	31 min
Jul 22, 8:15 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham, Stokes	75 min
Jul 22, 9:45 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	45 min
Jul 22, 10:31 PM EDT	Special Weather Statement	RNK	Caswell	29 min
Jul 23, 6:46 PM EDT	Special Weather Statement	RNK	Stokes, Surry, Wilkes, Yadkin	59 min
Jul 23, 7:41 PM EDT	Special Weather Statement	RNK	Alleghany	64 min

Nearby

Special Weather Statements in Virginia, 2018 Every special weather statement in 2018

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.