Alert archive / Virginia / Special Weather Statements in 2020

Special Weather Statement, NWS Blacksburg, VA

July 28, 2020Botetourt County, Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 28, 2020, 4:04 PM EDT for Botetourt County, Virginia. It was in force for 26 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 28, 2020, 4:04 PM EDT (20:04 UTC)
Expired: Jul 28, 2020, 4:30 PM EDT
In force: 26 min
Issued by: NWS Blacksburg, VA

County Botetourt County, VA

The radar

The Roanoke radar (KFCX), 92 km from the middle of the area, began a volume at 20:06 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 12:00Z, 8.1 hours before the alert went out and 174 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: 702 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1352 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 23 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 28, 2:33 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, Jul 28, 2:33 PM EDT, 1 hour 31 minutes before

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Hazardous weather outlook, Jul 28, 9:58 AM EDT, 6 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
958 AM EDT Tue Jul 28 2020

VAZ034-035-045>047-059-291400-
Bedford-Amherst-Campbell-Appomattox-Buckingham-Charlotte-
958 AM EDT Tue Jul 28 2020

This Hazardous Weather Outlook is for central Virginia and south
central Virginia.

.DAY ONE...Today and tonight.

There is a Marginal Risk for stronger to severe thunderstorms capable
of producing damaging wind gusts this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001>006-018>020-VAZ007-009>020-022>024-032-033-043-044-058-
WVZ042>044-507-508-291400-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson-
Carroll-Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-Rockbridge-
Patrick-Franklin-Henry-Pittsylvania-Halifax-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
958 AM EDT Tue Jul 28 2020

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

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 28, 3:00 PM EDT, 1 hour 4 minutes before

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Special weather statement, Jul 28, 3:05 PM EDT, 59 minutes before

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Local storm report, Jul 28, 3:17 PM EDT, 47 minutes before

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Local storm report, Jul 28, 3:23 PM EDT, 41 minutes before

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Special weather statement, Jul 28, 3:28 PM EDT, 36 minutes before

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Special weather statement, Jul 28, 4:04 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 28, 12:05 PM EDT	Special Weather Statement	RNK	Floyd, City of Radford	40 min
Jul 28, 12:11 PM EDT	Special Weather Statement	RNK	City of Galax	49 min
Jul 28, 1:35 PM EDT	Special Weather Statement	RNK	Franklin	25 min
Jul 28, 2:00 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	30 min
Jul 28, 2:28 PM EDT	Areal Flood Advisory	RNK	Henry, City of Martinsville	2 hr
Jul 28, 2:34 PM EDT	Special Weather Statement	RNK	Henry, Pittsylvania, City of Martinsville	26 min
Jul 28, 2:48 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Henry, Pittsylvania, City of Danville	57 min
Jul 28, 3:05 PM EDT	Special Weather Statement	RNK	Campbell, City of Lynchburg	25 min
Jul 28, 3:21 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax, Pittsylvania	54 min
Jul 28, 3:28 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	32 min
Jul 28, 3:34 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	56 min
Jul 28, 4:20 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington	55 min
Jul 28, 4:22 PM EDT	Special Weather Statement	RNK	Alleghany	23 min
Jul 28, 12:41 PM EDT	Special Weather Statement	RNK	Surry	19 min
Jul 28, 1:01 PM EDT	Special Weather Statement	RNK	Surry	29 min
Jul 28, 1:33 PM EDT	Special Weather Statement	RNK	Surry	27 min
Jul 28, 1:44 PM EDT	Special Weather Statement	RNK	Alleghany	31 min
Jul 28, 2:17 PM EDT	Special Weather Statement	RNK	Wilkes	28 min
Jul 28, 3:00 PM EDT	Special Weather Statement	RNK	Surry, Wilkes, Yadkin	60 min

Nearby

Special Weather Statements in Virginia, 2020 Every special weather statement in 2020

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.