Alert archive / North Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

May 20, 2018Stokes County, Yadkin County, North Carolina

NWS Blacksburg, VA issued this special weather statement at May 20, 2018, 2:39 AM EDT for Stokes County, Yadkin County, North Carolina. It was in force for 51 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 20, 2018, 2:39 AM EDT (06:39 UTC)
Expired: May 20, 2018, 3:30 AM EDT
In force: 51 min
Issued by: NWS Blacksburg, VA

Counties Stokes County, NC, Yadkin County, NC

The radar

The Roanoke radar (KFCX), 90 km from the middle of the area, began a volume at 06:39 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, 6.7 hours before the alert went out and 136 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: 127 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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 20, 2:01 AM EDT, 38 minutes earlier.

Area forecast discussion, May 20, 2:01 AM EDT, 38 minutes before

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Hazardous weather outlook, May 19, 2:52 PM EDT, 11 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
252 PM EDT Sat May 19 2018

NCZ003>006-019-020-VAZ022>024-032>035-043>047-058-059-201900-
Surry-Stokes-Rockingham-Caswell-Wilkes-Yadkin-Roanoke-Botetourt-
Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-
Campbell-Appomattox-Buckingham-Halifax-Charlotte-
252 PM EDT Sat May 19 2018

...FLASH FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

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

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001-002-018-VAZ007-009>020-WVZ042>044-507-508-201900-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Mercer-
Summers-Monroe-Eastern Greenbrier-Western Greenbrier-
252 PM EDT Sat May 19 2018

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

.DAY ONE...This afternoon and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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, May 19, 11:23 PM EDT, 3 hours 16 minutes before

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Local storm report, May 19, 11:29 PM EDT, 3 hours 10 minutes before

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Special weather statement, May 19, 11:46 PM EDT, 2 hours 53 minutes before

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Local storm report, May 20, 2:31 AM EDT, 8 minutes before

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Local storm report, May 20, 2:33 AM EDT, 6 minutes before

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Special weather statement, May 20, 2:39 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
May 19, 8:27 PM EDT	Flash Flood Warning	RNK	Bedford	6 hr
May 19, 8:35 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	40 min
May 19, 8:38 PM EDT	Areal Flood Advisory	RNK	Franklin, Henry, Patrick	33 min
May 19, 8:42 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, City of Covington	63 min
May 19, 8:53 PM EDT	Areal Flood Advisory	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	6 hr
May 19, 9:08 PM EDT	Flash Flood Warning	RNK	Franklin, Henry, Patrick	6 hr
May 19, 9:16 PM EDT	Areal Flood Advisory	RNK	Craig	5 hr
May 19, 9:19 PM EDT	Special Weather Statement	RNK	Smyth	41 min
May 19, 9:53 PM EDT	Areal Flood Advisory	RNK	Botetourt, Rockbridge	4 hr
May 19, 10:46 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	89 min
May 19, 11:46 PM EDT	Special Weather Statement	RNK	Pittsylvania, City of Martinsville	74 min
May 20, 3:07 AM EDT	Areal Flood Warning	RNK	Franklin, Henry	5 hr
May 20, 8:01 AM EDT	Areal Flood Warning	RNK	Henry, City of Martinsville	119 min
May 20, 2:59 PM EDT	Special Weather Statement	RNK	Henry	46 min
May 20, 3:47 PM EDT	Special Weather Statement	RNK	Henry	43 min
May 20, 5:31 PM EDT	Flash Flood Warning	RNK	Patrick	4 hr
May 20, 6:35 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, Rockbridge, City of Buena Vista, City of Covington, City of Lexington	55 min
May 20, 6:45 PM EDT	Special Weather Statement	RNK	Buckingham	60 min
May 20, 7:06 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	54 min
May 20, 7:16 PM EDT	Areal Flood Warning	RNK	Carroll, Patrick	106 min
May 20, 7:59 PM EDT	Special Weather Statement	RNK	Buckingham	61 min
May 20, 3:02 PM EDT	Special Weather Statement	RNK	Wilkes	58 min
May 20, 3:32 PM EDT	Flash Flood Warning	RNK	Wilkes	5 hr
May 20, 3:41 PM EDT	Special Weather Statement	RNK	Surry	49 min
May 20, 3:56 PM EDT	Flash Flood Warning	RNK	Surry, Wilkes	5 hr
May 20, 4:14 PM EDT	Special Weather Statement	RNK	Yadkin	31 min
May 20, 4:22 PM EDT	Flash Flood Warning	RNK	Surry, Wilkes, Yadkin	5 hr
May 20, 4:22 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes, Yadkin	53 min
May 20, 4:58 PM EDT	Special Weather Statement	RNK	Stokes	47 min
May 20, 6:13 PM EDT	Special Weather Statement	RNK	Stokes	17 min
May 20, 6:17 PM EDT	Special Weather Statement	RNK	Surry	58 min
May 20, 6:38 PM EDT	Special Weather Statement	RNK	Stokes	37 min

Nearby

Special Weather Statements in North Carolina, 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.