Alert archive / Virginia / Special Weather Statements in 2017

Special Weather Statement, NWS Blacksburg, VA

August 2, 2017Botetourt County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 2, 2017, 4:10 PM EDT for Botetourt County, Virginia. It was in force for 35 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 2, 2017, 4:10 PM EDT (20:10 UTC)
Expired: Aug 2, 2017, 4:45 PM EDT
In force: 35 min
Issued by: NWS Blacksburg, VA

County Botetourt County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 8.2 hours before the alert went out and 37 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: 69 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 52 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 2, 4:00 PM EDT, 10 minutes earlier.

Area forecast discussion, Aug 2, 4:00 PM EDT, 10 minutes before

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Hazardous weather outlook, Aug 2, 3:32 AM EDT, 12 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
332 AM EDT Wed Aug 2 2017

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-030745-
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-
332 AM EDT Wed Aug 2 2017

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.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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, Aug 2, 1:58 PM EDT, 2 hours 12 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
158 PM EDT WED AUG 2 2017

WVZ043-044-507-508-021830-
Western Greenbrier-Summers-Eastern Greenbrier-Monroe-
158 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT
SOUTHWESTERN GREENBRIER...NORTHEASTERN SUMMERS AND NORTHWESTERN
MONROE COUNTIES...

At 157 PM EDT, a strong thunderstorm was located over Sandstone,
moving east at 5 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Hinton...
Alderson...
Sandstone...
Wolfcreek...
and Elton.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3762 8064 3764 8094 3771 8093 3770 8090
      3767 8090 3768 8088 3773 8090 3774 8092
      3777 8089 3780 8092 3783 8092 3787 8081
      3787 8075 3790 8077 3792 8058
TIME...MOT...LOC 1757Z 279DEG 6KT 3778 8085

WP

Special weather statement, Aug 2, 2:41 PM EDT, 1 hour 29 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
241 PM EDT WED AUG 2 2017

VAZ018-WVZ044-021915-
Craig-Monroe-
241 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT
SOUTHWESTERN CRAIG AND SOUTHEASTERN MONROE COUNTIES...

At 240 PM EDT, a strong thunderstorm was located near Waiteville,
moving east at 10 mph.

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

Locations impacted include...
Paint Bank...
Sinking Creek...
Craig Springs...
Waiteville...
and Maggie.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3756 8014 3735 8026 3740 8047 3742 8048
      3743 8049 3759 8043
TIME...MOT...LOC 1840Z 287DEG 8KT 3748 8038

JR

Special weather statement, Aug 2, 3:27 PM EDT, 43 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
327 PM EDT WED AUG 2 2017

VAZ019-023-022000-
Botetourt-Alleghany-
327 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT
CENTRAL ALLEGHANY AND NORTHWESTERN BOTETOURT COUNTIES IN WEST CENTRAL
VIRGINIA AND THE CITY OF COVINGTON...

At 327 PM EDT, a strong thunderstorm was located near Covington,
moving east at 25 mph.

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

Locations impacted include...
Covington...
Gala...
and Low Moor.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3766 7980 3762 8002 3763 8003 3764 8003
      3764 8002 3766 8003 3765 8005 3764 8006
      3775 8011 3787 7993
TIME...MOT...LOC 1927Z 253DEG 21KT 3773 8000

JR

Special weather statement, Aug 2, 3:50 PM EDT, 20 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
350 PM EDT WED AUG 2 2017

WVZ043-022045-
Summers-
350 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT
SOUTHWESTERN SUMMERS COUNTY...

At 350 PM EDT, a strong thunderstorm was located over Pipestem,
moving southeast at 20 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Pipestem...
Pipestem Resort State Park...
Ellison...
Bluestone State Park...
and Jumping Branch.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 3760 8084 3756 8085 3753 8091 3751 8098
      3755 8104 3759 8109 3768 8098
TIME...MOT...LOC 1950Z 319DEG 19KT 3756 8095

JR

Special weather statement, Aug 2, 3:52 PM EDT, 18 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
352 PM EDT WED AUG 2 2017

VAZ017-032-033-022015-
Franklin-Patrick-Floyd-
352 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT
EAST CENTRAL FLOYD...SOUTHWESTERN FRANKLIN AND NORTHEASTERN PATRICK
COUNTIES...

At 352 PM EDT, a strong thunderstorm was located over Endicott. the
storm is nearly stationary.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Floyd...
and Endicott.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 3683 8026 3692 8032 3703 8012 3682 8003
TIME...MOT...LOC 1952Z 247DEG 4KT 3688 8020

JR

Special weather statement, Aug 2, 4:10 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 2, 2:41 PM EDT	Special Weather Statement	RNK	Craig	34 min
Aug 2, 3:27 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	33 min
Aug 2, 3:52 PM EDT	Special Weather Statement	RNK	Floyd	23 min
Aug 2, 5:17 PM EDT	Special Weather Statement	RNK	Campbell	58 min
Aug 2, 5:28 PM EDT	Areal Flood Advisory	RNK	Botetourt, Roanoke, City of Roanoke, City of Salem	3 hr
Aug 2, 1:29 PM EDT	Special Weather Statement	RNK	Summers	31 min
Aug 2, 1:58 PM EDT	Special Weather Statement	RNK	Summers	32 min
Aug 2, 3:16 PM EDT	Areal Flood Advisory	RNK	Monroe	4 hr
Aug 2, 3:50 PM EDT	Special Weather Statement	RNK	Summers	55 min
Aug 2, 4:01 PM EDT	Areal Flood Advisory	RNK	Summers	4 hr

Nearby

Special Weather Statements in Virginia, 2017 Every special weather statement in 2017

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.