Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

June 19, 2018Smyth County, Virginia

NWS Blacksburg, VA issued this special weather statement at Jun 19, 2018, 9:12 PM EDT for Smyth County, Virginia. It was in force for 48 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: Jun 19, 2018, 9:12 PM EDT (01:12 UTC)
Expired: Jun 19, 2018, 10:00 PM EDT
In force: 48 min
Issued by: NWS Blacksburg, VA

County Smyth County, VA

The radar

The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 01:12 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.2 hours before the alert went out and 356 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: 648 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

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 Jun 19, 7:52 PM EDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jun 19, 7:52 PM EDT, 1 hour 20 minutes before

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Hazardous weather outlook, Jun 19, 3:13 PM EDT, 5 hours 59 minutes before

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In the hours before

Special weather statement, Jun 19, 6:14 PM EDT, 2 hours 58 minutes before

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Special weather statement, Jun 19, 7:00 PM EDT, 2 hours 12 minutes before

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Special weather statement, Jun 19, 7:04 PM EDT, 2 hours 8 minutes before

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Special weather statement, Jun 19, 7:18 PM EDT, 1 hour 54 minutes before

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Special weather statement, Jun 19, 8:03 PM EDT, 1 hour 9 minutes before

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Special weather statement, Jun 19, 9:12 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 19, 8:03 PM EDT	Special Weather Statement	RNK	Giles	57 min
Jun 19, 9:26 PM EDT	Special Weather Statement	RNK	Halifax	49 min
Jun 19, 9:27 PM EDT	Special Weather Statement	RNK	Halifax	48 min
Jun 19, 9:52 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	53 min
Jun 19, 9:55 PM EDT	Special Weather Statement	RNK	Franklin	50 min
Jun 19, 10:36 PM EDT	Special Weather Statement	RNK	Halifax	39 min
Jun 19, 10:47 PM EDT	Special Weather Statement	RNK	Pittsylvania	28 min
Jun 19, 11:17 PM EDT	Special Weather Statement	RNK	Halifax, Pittsylvania	43 min
Jun 20, 1:03 PM EDT	Special Weather Statement	RNK	Buckingham	57 min
Jun 20, 1:16 PM EDT	Special Weather Statement	RNK	Botetourt	29 min
Jun 20, 2:41 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell, City of Lynchburg	94 min
Jun 20, 4:29 PM EDT	Special Weather Statement	RNK	Charlotte	16 min
Jun 20, 4:39 PM EDT	Special Weather Statement	RNK	Halifax	36 min
Jun 20, 5:46 PM EDT	Special Weather Statement	RNK	Pittsylvania	29 min
Jun 20, 5:52 PM EDT	Special Weather Statement	RNK	Bland	23 min
Jun 20, 6:00 PM EDT	Special Weather Statement	RNK	Campbell	30 min
Jun 20, 6:15 PM EDT	Severe Thunderstorm Warning	RNK	Campbell, Halifax, Pittsylvania	45 min
Jun 20, 7:03 PM EDT	Special Weather Statement	RNK	Pittsylvania	27 min
Jun 20, 7:16 PM EDT	Special Weather Statement	RNK	Charlotte	44 min
Jun 20, 7:37 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte	23 min
Jun 20, 7:42 PM EDT	Special Weather Statement	RNK	Halifax	33 min
Jun 20, 5:20 PM EDT	Special Weather Statement	RNK	Caswell	25 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.