Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

May 15, 2018Giles County, Virginia

NWS Blacksburg, VA issued this special weather statement at May 15, 2018, 2:13 PM EDT for Giles County, Virginia. It was in force for 47 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: May 15, 2018, 2:13 PM EDT (18:13 UTC)
Expired: May 15, 2018, 3:00 PM EDT
In force: 47 min
Issued by: NWS Blacksburg, VA

County Giles County, VA

The radar

The Roanoke radar (KFCX), 48 km from the middle of the area, began a volume at 18:13 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 12:00Z, 6.2 hours before the alert went out and 115 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: 278 J/kg
Mixed-layer CIN: -135 J/kg
Mixed-layer LCL: 1155 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -51 m²/s²
0-3 km storm-relative helicity: 14 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 May 15, 9:01 AM EDT, 5 hours 12 minutes earlier.

Area forecast discussion, May 15, 9:01 AM EDT, 5 hours 12 minutes before

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Hazardous weather outlook, May 15, 5:07 AM EDT, 9 hours 6 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
507 AM EDT Tue May 15 2018

VAZ019-020-024-WVZ507-508-161000-
Alleghany VA-Bath-Rockbridge-Eastern Greenbrier-Western Greenbrier-
507 AM EDT Tue May 15 2018

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

.DAY ONE...Today and tonight.

There is a marginal risk of severe thunderstorms this afternoon and
evening across northern and central Virginia and West Virginia. The
primary threat from any severe storms will be damaging winds and
large hail. Heavy rain and frequent lightning will accompany the
storms.

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

Numerous showers and thunderstorms are expected Wednesday through
Friday. Heavy rain is likely with any of the storms and localized
flooding is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001>006-018>020-VAZ007-009>018-022-023-032>035-043>047-058-059-
WVZ042>044-161000-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Grayson-
Carroll-Floyd-Craig-Roanoke-Botetourt-Patrick-Franklin-Bedford-
Amherst-Henry-Pittsylvania-Campbell-Appomattox-Buckingham-Halifax-
Charlotte-Mercer-Summers-Monroe-
507 AM EDT Tue May 15 2018

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

Numerous showers and thunderstorms are expected Wednesday through
Friday. Heavy rain is likely with any of the storms and localized
flooding is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 15, 1:40 PM EDT, 33 minutes before

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Special weather statement, May 15, 2:13 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
May 15, 1:40 PM EDT	Special Weather Statement	RNK	Grayson, Wythe	35 min
May 15, 2:03 PM EDT	Flash Flood Warning	RNK	Carroll, Grayson, Pulaski, Smyth, Wythe	3 hr
May 15, 2:09 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt, Craig, Montgomery, Roanoke	51 min
May 15, 2:28 PM EDT	Special Weather Statement	RNK	Bland	32 min
May 15, 2:58 PM EDT	Special Weather Statement	RNK	Botetourt, Craig, Roanoke, City of Roanoke, City of Salem	47 min
May 15, 3:11 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Craig, Franklin, Roanoke, City of Roanoke and 1 more	64 min
May 15, 3:18 PM EDT	Areal Flood Advisory	RNK	Botetourt, Roanoke, City of Roanoke, City of Salem	3 hr
May 15, 3:25 PM EDT	Special Weather Statement	RNK	Franklin	50 min
May 15, 3:38 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin, Montgomery	67 min
May 15, 3:40 PM EDT	Special Weather Statement	RNK	Bland	50 min
May 15, 3:56 PM EDT	Flash Flood Warning	RNK	Botetourt, Roanoke, City of Roanoke, City of Salem	87 min
May 15, 4:26 PM EDT	Special Weather Statement	RNK	Patrick	64 min
May 15, 5:03 PM EDT	Special Weather Statement	RNK	Bath	27 min
May 15, 6:17 PM EDT	Special Weather Statement	RNK	Tazewell	58 min
May 15, 4:51 PM EDT	Special Weather Statement	RNK	Pocahontas	54 min
May 15, 5:00 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	60 min
May 15, 6:34 PM EDT	Special Weather Statement	RNK	Mercer, Summers	56 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.