Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

May 19, 2018Giles County, Virginia

NWS Blacksburg, VA issued this special weather statement at May 19, 2018, 7:49 PM EDT for Giles County, Virginia. It was in force for 41 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 19, 2018, 7:49 PM EDT (23:49 UTC)
Expired: May 19, 2018, 8:30 PM EDT
In force: 41 min
Issued by: NWS Blacksburg, VA

County Giles County, VA

The radar

The Roanoke radar (KFCX), 51 km from the middle of the area, began a volume at 23:50 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, 11.8 hours before the alert went out and 148 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: 172 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 548 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 19, 3:18 PM EDT, 4 hours 31 minutes earlier.

Area forecast discussion, May 19, 3:18 PM EDT, 4 hours 31 minutes before

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Hazardous weather outlook, May 19, 2:52 PM EDT, 4 hours 57 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

Special weather statement, May 19, 6:56 PM EDT, 53 minutes before

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Special weather statement, May 19, 7:01 PM EDT, 48 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
701 PM EDT SAT MAY 19 2018

VAZ010-011-013-WVZ042>044-507-508-192345-
Giles-Pulaski-Bland-Western Greenbrier-Mercer-Summers-Eastern
Greenbrier-Monroe-
701 PM EDT SAT MAY 19 2018

...THUNDERSTORMS WILL AFFECT PULASKI...GILES...EASTERN
BLAND...GREENBRIER...EASTERN SUMMERS... SOUTHEASTERN MERCER AND
MONROE COUNTIES...

Until 745 PM EDT

At 659 PM EDT, showers and thunderstorms extended from near Duo
through Red Sulphur Spring to near Wytheville. Movement was east at
35 mph.

Wind gusts around 40 mph and very heavy rainfall are possible with
these storms.

Locations impacted include...
Radford...
Alleghany...
Pulaski...
Lewisburg...
and Pearisburg.

This includes The following Location The West Virginia State
Fairgrounds.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3805 8027 3806 8004 3795 8006 3769 8030
      3763 8022 3756 8033 3752 8029 3742 8048
      3731 8043 3723 8062 3720 8051 3712 8060
      3706 8055 3700 8059 3696 8082 3707 8091
      3703 8115 3750 8084 3808 8071 3825 8039
TIME...MOT...LOC 2259Z 252DEG 31KT 3810 8063 3752 8076 3697 8113

MBS

Special weather statement, May 19, 7:03 PM EDT, 46 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
703 PM EDT SAT MAY 19 2018

VAZ018-023-192330-
Botetourt-Craig-
703 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL AFFECT
NORTHEASTERN CRAIG AND WEST CENTRAL BOTETOURT COUNTIES...

Until 730 PM EDT

At 702 PM EDT, a strong thunderstorm was located over New Castle,
moving northeast at 20 mph.

Winds of 40 mph to 50 mph and locally heavy rainfall are possible
with this storm.

Locations impacted include...
New Castle...
and Oriskany.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3765 8002 3766 8000 3759 7987 3746 8008
      3750 8015 3763 8008 3766 8003
TIME...MOT...LOC 2302Z 216DEG 18KT 3751 8009

MBS

Special weather statement, May 19, 7:44 PM EDT, 5 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
744 PM EDT SAT MAY 19 2018

VAZ034-200030-
Bedford-
744 PM EDT SAT MAY 19 2018

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

Until 830 PM EDT

At 743 PM EDT, a strong thunderstorm was located near Northwest Smith
Mountain Lake, moving northeast at 15 mph.

Wind gusts of 40 mph to 50 mph and very heavy rainfall are possible
with this storm.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

Locations impacted include...
Bedford...
Moneta...
Stewartsville...
Montvale...
and Chamblissburg.

This includes The following Location The National D-Day Memorial.

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

LAT...LON 3725 7941 3713 7965 3716 7968 3715 7969
      3716 7970 3715 7970 3715 7971 3719 7972
      3719 7976 3720 7976 3720 7978 3723 7978
      3721 7980 3723 7982 3722 7984 3727 7986
      3746 7963
TIME...MOT...LOC 2343Z 230DEG 15KT 3719 7978

MBS

Special weather statement, May 19, 7:47 PM EDT, 2 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
747 PM EDT SAT MAY 19 2018

VAZ019-WVZ044-507-508-200030-
Alleghany-Western Greenbrier-Eastern Greenbrier-Monroe-
747 PM EDT SAT MAY 19 2018

...strong THUNDERSTORMS WILL AFFECT NORTHWESTERN ALLEGHANY COUNTY IN
WEST CENTRAL VIRGINIA...CENTRAL GREENBRIER AND NORTHEASTERN MONROE
COUNTIES IN SOUTHEASTERN WEST VIRGINIA...

Until 830 PM EDT

At 745 PM EDT, radar indicated strong thunderstorms extended from
near Leonard through Maxwelton to Organ Cave. Movement was northeast
at 20 mph.

Wind gusts up to 40 mph and very heavy rainfall are possible.

Locations impacted include...
Alleghany...
Covington...
Lewisburg...
White Sulphur Springs...
and Ronceverte.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3822 8036 3811 8036 3805 8026 3804 8016
      3806 8011 3806 7997 3800 8000 3795 8005
      3794 8003 3796 8000 3795 7998 3772 8001
      3760 8049 3785 8054 3823 8037
TIME...MOT...LOC 2345Z 241DEG 18KT 3820 8034 3789 8046 3771 8043

MBS

Special weather statement, May 19, 7:49 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
749 PM EDT SAT MAY 19 2018

VAZ011-013-014-200030-
Giles-Pulaski-Montgomery-
749 PM EDT SAT MAY 19 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN PULASKI...GILES AND
NORTHWESTERN MONTGOMERY COUNTIES...

Until 830 PM EDT

At 748 PM EDT, a strong thunderstorm was located near White Gate,
moving northeast at 25 mph.

Winds up to 40 mph and very heavy rain are possible with this storm.

Locations impacted include...
Blacksburg...
Pearisburg...
Pembroke...
Newport...
and Mountain Lake.

This includes The following Location Virginia Tech.

Ponding of water on roadways and some localized flooding are
possible. Do not drive your vehicle through flooded roadways.

LAT...LON 3745 8054 3721 8038 3708 8091 3710 8093
      3711 8093 3712 8089 3715 8086 3717 8088
      3718 8086 3719 8087 3718 8089 3721 8093
TIME...MOT...LOC 2348Z 241DEG 22KT 3716 8088

MBS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 9:14 PM EDT	Areal Flood Warning	RNK	Carroll, Floyd, Franklin, Henry, Patrick	6 hr
May 18, 9:34 PM EDT	Areal Flood Warning	RNK	Pittsylvania, City of Danville	6 hr
May 18, 9:42 PM EDT	River Flood Warning	RNK	Pittsylvania, City of Danville	42 hr
May 18, 9:42 PM EDT	River Flood Warning	RNK	Halifax	63 hr
May 18, 9:45 PM EDT	Areal Flood Warning	RNK	Franklin, Henry, Pittsylvania, City of Martinsville	6 hr
May 18, 9:57 PM EDT	Areal Flood Warning	RNK	Carroll, Patrick	6 hr
May 18, 10:53 PM EDT	Areal Flood Warning	RNK	Campbell, Charlotte, Halifax	6 hr
May 19, 3:30 AM EDT	Flash Flood Warning	RNK	Grayson	2 hr
May 19, 4:49 AM EDT	Areal Flood Warning	RNK	Charlotte, Halifax	116 min
May 19, 4:54 AM EDT	Areal Flood Warning	RNK	Buckingham	3 hr
May 19, 8:31 AM EDT	River Flood Warning	RNK	Campbell, Charlotte, Halifax	35 hr
May 19, 3:58 PM EDT	Special Weather Statement	RNK	Craig, Giles, Pulaski, City of Radford	62 min
May 19, 4:55 PM EDT	Special Weather Statement	RNK	Smyth, Tazewell	50 min
May 19, 5:37 PM EDT	Special Weather Statement	RNK	Craig	38 min
May 19, 5:54 PM EDT	Special Weather Statement	RNK	Bland, Grayson, Smyth, Wythe	66 min
May 19, 6:29 PM EDT	Special Weather Statement	RNK	Craig	31 min
May 19, 6:56 PM EDT	Special Weather Statement	RNK	City of Roanoke	49 min
May 19, 7:01 PM EDT	Special Weather Statement	RNK	Giles, Pulaski	44 min
May 19, 7:03 PM EDT	Special Weather Statement	RNK	Botetourt	27 min
May 19, 7:44 PM EDT	Special Weather Statement	RNK	Bedford	46 min
May 19, 7:47 PM EDT	Special Weather Statement	RNK	Alleghany	43 min
May 19, 7:57 PM EDT	Special Weather Statement	RNK	Tazewell	63 min
May 18, 8:59 PM EDT	Areal Flood Warning	RNK	Stokes	6 hr
May 18, 9:29 PM EDT	Flash Flood Warning	RNK	Ashe, Watauga	6 hr
May 19, 1:41 AM EDT	Special Weather Statement	RNK	Wilkes	64 min
May 19, 2:23 AM EDT	Flash Flood Warning	RNK	Wilkes	4 hr
May 19, 3:48 AM EDT	Areal Flood Warning	RNK	Ashe, Watauga	6 hr
May 19, 6:26 PM EDT	Special Weather Statement	RNK	Greenbrier	34 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.