Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

August 30, 2018Pittsylvania County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 30, 2018, 8:13 PM EDT for Pittsylvania County, Virginia. It was in force for 32 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: Aug 30, 2018, 8:13 PM EDT (00:13 UTC)
Expired: Aug 30, 2018, 8:45 PM EDT
In force: 32 min
Issued by: NWS Blacksburg, VA

County Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 70 km from the middle of the area, began a volume at 00:12 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.2 hours before the alert went out and 106 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: 2630 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1396 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: -16 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 Aug 30, 7:30 PM EDT, 43 minutes earlier.

Area forecast discussion, Aug 30, 7:30 PM EDT, 43 minutes before

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Hazardous weather outlook, Aug 30, 3:16 PM EDT, 4 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
316 PM EDT Thu Aug 30 2018

NCZ001>006-018>020-VAZ007-009-010-012-015-016-032-043-044-058-311930-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Bland-Wythe-Grayson-Carroll-Patrick-Henry-
Pittsylvania-Halifax-
316 PM EDT Thu Aug 30 2018

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, south central Virginia and southwest
Virginia.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ011-013-014-017>020-022>024-033>035-045>047-059-WVZ042>044-507-
508-311930-
Giles-Pulaski-Montgomery-Floyd-Craig-Alleghany VA-Bath-Roanoke-
Botetourt-Rockbridge-Franklin-Bedford-Amherst-Campbell-Appomattox-
Buckingham-Charlotte-Mercer-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
316 PM EDT Thu Aug 30 2018

This Hazardous Weather Outlook is for central Virginia, south
central Virginia, southwest Virginia, west central Virginia and
southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Numerous showers with scattered thunderstorms this afternoon. The
severe threat is limited, with the probability of anything severe
within 25 miles of a point to be less than 15 percent. Greatest
thunderstorm coverage is expected between 300 PM and 1000 PM. Severe
threat, albeit marginal, would be from a damaging wind gust. High
rainfall rates with slow moving storms may also produce localized
flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 30, 7:41 PM EDT, 32 minutes before

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Special weather statement, Aug 30, 7:47 PM EDT, 26 minutes before

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Special weather statement, Aug 30, 7:48 PM EDT, 25 minutes before

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Local storm report, Aug 30, 7:51 PM EDT, 22 minutes before

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Local storm report, Aug 30, 8:08 PM EDT, 5 minutes before

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Special weather statement, Aug 30, 8:13 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
Aug 30, 8:25 PM EDT	Special Weather Statement	RNK	Charlotte	50 min
Aug 30, 8:30 PM EDT	Special Weather Statement	RNK	Campbell	15 min
Aug 30, 8:31 PM EDT	Special Weather Statement	RNK	City of Martinsville	14 min
Aug 30, 8:48 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell, Pittsylvania, City of Danville	27 min
Aug 30, 8:52 PM EDT	Special Weather Statement	RNK	Charlotte	23 min
Aug 30, 9:13 PM EDT	Special Weather Statement	RNK	Halifax	47 min
Aug 30, 9:19 PM EDT	Special Weather Statement	RNK	City of Danville	41 min
Aug 30, 9:34 PM EDT	Areal Flood Advisory	RNK	Charlotte, Halifax	2 hr
Aug 31, 3:32 AM EDT	Flash Flood Warning	RNK	Carroll, Grayson, City of Galax	6 hr
Aug 31, 2:10 PM EDT	Special Weather Statement	RNK	Floyd	65 min
Aug 31, 2:44 PM EDT	Areal Flood Advisory	RNK	Carroll, Grayson, Wythe, City of Galax	2 hr
Aug 31, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	43 min
Aug 31, 3:02 PM EDT	Special Weather Statement	RNK	Tazewell	58 min
Aug 31, 3:30 PM EDT	Areal Flood Advisory	RNK	Tazewell	2 hr
Aug 31, 3:50 PM EDT	Special Weather Statement	RNK	Floyd, City of Radford	55 min
Aug 31, 3:59 PM EDT	Special Weather Statement	RNK	Floyd	61 min
Aug 31, 4:17 PM EDT	Special Weather Statement	RNK	Giles, Pulaski	58 min
Aug 31, 5:06 PM EDT	Special Weather Statement	RNK	Craig	54 min
Aug 31, 5:27 PM EDT	Special Weather Statement	RNK	City of Galax	63 min
Aug 31, 5:38 PM EDT	Special Weather Statement	RNK	City of Galax	67 min
Aug 30, 10:12 PM EDT	Special Weather Statement	RNK	Caswell	33 min
Aug 30, 11:05 PM EDT	Special Weather Statement	RNK	Wilkes	40 min
Aug 30, 11:24 PM EDT	Special Weather Statement	RNK	Caswell	36 min
Aug 30, 11:31 PM EDT	Special Weather Statement	RNK	Surry	14 min
Aug 30, 11:46 PM EDT	Areal Flood Advisory	RNK	Surry	2 hr
Aug 31, 12:00 AM EDT	Areal Flood Advisory	RNK	Caswell, Rockingham	3 hr
Aug 31, 1:53 AM EDT	Special Weather Statement	RNK	Caswell, Rockingham	37 min
Aug 31, 2:16 AM EDT	Areal Flood Advisory	RNK	Caswell, Rockingham	3 hr
Aug 31, 2:58 PM EDT	Special Weather Statement	RNK	Ashe	62 min
Aug 31, 3:40 PM EDT	Flash Flood Warning	RNK	Ashe	3 hr
Aug 31, 6:44 PM EDT	Special Weather Statement	RNK	Surry	46 min
Aug 31, 7:12 PM EDT	Severe Thunderstorm Warning	RNK	Surry	63 min
Aug 31, 3:54 PM EDT	Areal Flood Advisory	RNK	Mercer	3 hr

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.