Alert archive / North Carolina / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 161, NWS Blacksburg, VA

July 31, 2019Ashe County, Watauga County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 31, 2019, 2:20 PM EDT for Ashe County, Watauga County, Wilkes County, North Carolina. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 31, 2019, 2:20 PM EDT (18:20 UTC)
Expired: Jul 31, 2019, 3:15 PM EDT
In force: 55 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Ashe County, NC, Watauga County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 133 km from the middle of the area, began a volume at 18:21 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, 6.3 hours before the alert went out and 201 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: 7 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 1412 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 31, 9:45 AM EDT, 4 hours 35 minutes earlier.

Area forecast discussion, Jul 31, 9:45 AM EDT, 4 hours 35 minutes before

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Hazardous weather outlook, Jul 31, 4:37 AM EDT, 9 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
437 AM EDT Wed Jul 31 2019

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-010845-
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-Bedford-Amherst-Henry-Pittsylvania-Campbell-
Appomattox-Buckingham-Halifax-Charlotte-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
437 AM EDT Wed Jul 31 2019

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...Thursday through Tuesday.

Some localized flooding is possible Thursday into Sunday as a
frontal system stalls near the area resulting in several rounds of
showers and thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 31, 10:27 AM EDT, 3 hours 53 minutes before

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Local storm report, Jul 31, 10:28 AM EDT, 3 hours 52 minutes before

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Local storm report, Jul 31, 11:02 AM EDT, 3 hours 18 minutes before

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Special weather statement, Jul 31, 12:33 PM EDT, 1 hour 47 minutes before

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Special weather statement, Jul 31, 1:57 PM EDT, 23 minutes before

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Special weather statement, Jul 31, 2:17 PM EDT, 3 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
217 PM EDT Wed Jul 31 2019

NCZ001-018-311845-
Ashe-Watauga-
217 PM EDT Wed Jul 31 2019

...A STRONG THUNDERSTORM WILL AFFECT ASHE AND WATAUGA COUNTIES...

Until 245 PM EDT.

At 217 PM EDT, a strong thunderstorm was located over Todd. the storm
is nearly stationary.

Winds in excess of 40 mph and dime size hail are possible with this
storm.

Locations impacted include...
Jefferson...
West Jefferson...
Todd...
Glendale Springs...
and Trout.

LAT...LON 3639 8165 3647 8140 3628 8138 3629 8141
      3628 8141 3627 8143 3626 8143 3626 8146
      3624 8148 3626 8165
TIME...MOT...LOC 1817Z 267DEG 2KT 3633 8158

VFJ

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 12:33 PM EDT	Special Weather Statement	RNK	Grayson	57 min
Jul 31, 1:25 PM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	25 min
Jul 31, 1:57 PM EDT	Special Weather Statement	RNK	Bath	63 min
Jul 31, 2:25 PM EDT	Special Weather Statement	RNK	Giles, City of Radford	50 min
Jul 31, 2:36 PM EDT	Special Weather Statement	RNK	Craig	39 min
Jul 31, 2:41 PM EDT	Severe Thunderstorm Warning	RNK	Bath, Rockbridge	22 min
Jul 31, 2:49 PM EDT	Special Weather Statement	RNK	Grayson	41 min
Jul 31, 3:00 PM EDT	Severe Thunderstorm Warning	RNK	Giles, Pulaski	45 min
Jul 31, 3:16 PM EDT	Severe Thunderstorm Warning	RNK	Grayson	59 min
Jul 31, 3:34 PM EDT	Severe Thunderstorm Warning	RNK	Rockbridge	26 min
Jul 31, 3:38 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Rockbridge, City of Lexington	67 min
Jul 31, 4:05 PM EDT	Special Weather Statement	RNK	Floyd	25 min
Jul 31, 4:21 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Rockbridge	39 min
Jul 31, 4:48 PM EDT	Special Weather Statement	RNK	Floyd	57 min
Jul 31, 4:52 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista	53 min
Jul 31, 4:58 PM EDT	Special Weather Statement	RNK	Floyd	47 min
Jul 31, 5:01 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Roanoke	59 min
Jul 31, 5:05 PM EDT	Special Weather Statement	RNK	Alleghany	25 min
Jul 31, 5:17 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	58 min
Jul 31, 5:39 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	66 min
Jul 31, 5:46 PM EDT	Special Weather Statement	RNK	Pulaski, City of Radford	44 min
Jul 31, 5:50 PM EDT	Special Weather Statement	RNK	City of Martinsville	25 min
Jul 31, 5:57 PM EDT	Special Weather Statement	RNK	Amherst	33 min
Jul 31, 6:02 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Botetourt	33 min
Jul 31, 6:07 PM EDT	Special Weather Statement	RNK	Buckingham	53 min
Jul 31, 6:25 PM EDT	Special Weather Statement	RNK	Pittsylvania	35 min
Jul 31, 6:30 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania	60 min
Jul 31, 7:33 PM EDT	Flash Flood Warning	RNK	Halifax, Pittsylvania	4 hr
Jul 31, 7:42 PM EDT	Special Weather Statement	RNK	Halifax	33 min
Jul 31, 1:50 PM EDT	Areal Flood Advisory	RNK	Watauga	26 min
Jul 31, 2:17 PM EDT	Special Weather Statement	RNK	Ashe	28 min
Jul 31, 3:24 PM EDT	Special Weather Statement	RNK	Yadkin	36 min
Jul 31, 3:50 PM EDT	Special Weather Statement	RNK	Caswell	25 min
Jul 31, 3:56 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes	49 min
Jul 31, 6:19 PM EDT	Special Weather Statement	RNK	Caswell	26 min
Jul 31, 6:56 PM EDT	Special Weather Statement	RNK	Caswell	34 min
Jul 31, 4:16 PM EDT	Special Weather Statement	RNK	Monroe, Summers	59 min
Jul 31, 6:33 PM EDT	Severe Thunderstorm Warning	RNK	Mercer	24 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2019 Every severe thunderstorm warning in 2019

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.