Alert archive / Virginia / Special Weather Statements in 2020

Special Weather Statement, NWS Blacksburg, VA

August 22, 2020Amherst County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 22, 2020, 10:04 PM EDT for Amherst County, Virginia. It was in force for 26 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 22, 2020, 10:04 PM EDT (02:04 UTC)
Expired: Aug 22, 2020, 10:30 PM EDT
In force: 26 min
Issued by: NWS Blacksburg, VA

County Amherst County, VA

The radar

The Roanoke radar (KFCX), 125 km from the middle of the area, began a volume at 02:07 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, 2.1 hours before the alert went out and 57 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: 181 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1183 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 22, 9:07 PM EDT, 57 minutes earlier.

Area forecast discussion, Aug 22, 9:07 PM EDT, 57 minutes before

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Hazardous weather outlook, Aug 22, 9:01 PM EDT, 1 hour 3 minutes before

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In the hours before

Special weather statement, Aug 22, 6:16 PM EDT, 3 hours 48 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
616 PM EDT Sat Aug 22 2020

VAZ020-024-WVZ507-222245-
Bath-Rockbridge-Eastern Greenbrier-
616 PM EDT Sat Aug 22 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT
NORTH CENTRAL ROCKBRIDGE...BATH AND EAST CENTRAL GREENBRIER
COUNTIES...

At 616 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Neola to Mountain Grove to Yost. Movement
was northeast at 5 mph.

Winds in excess of 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Goshen...
Neola...
Warm Springs...
Mountain Grove...
Bells Valley...
Burnsville...
and Alvon.

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

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3822 7971 3820 7956 3818 7951 3815 7953
      3817 7949 3816 7944 3809 7949 3805 7942
      3798 7951 3803 7992 3788 8025 3804 8018
      3806 8011 3806 7996 3810 7993 3813 7995
      3815 7992 3818 7992 3827 7980
TIME...MOT...LOC 2216Z 211DEG 5KT 3798 8013 3809 7987 3806 7956

RR

Special weather statement, Aug 22, 6:38 PM EDT, 3 hours 26 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
638 PM EDT Sat Aug 22 2020

VAZ017-033-222315-
Franklin-Floyd-
638 PM EDT Sat Aug 22 2020

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

At 638 PM EDT, a strong thunderstorm was located over Endicott, or 7
miles east of Floyd, moving northeast at 10 mph.

Winds in excess of 30 mph are possible with this storm, as well as
torrential rains with rainfall rates of 3 to 4 inches an hour.

Locations impacted include...
Ferrum...
and Endicott.

Torrential rainfall may cause localized flooding. Do not drive your
vehicle through flooded roadways.

LAT...LON 3685 8011 3688 8028 3707 8014 3692 7992
TIME...MOT...LOC 2238Z 222DEG 9KT 3689 8019

WP

Local storm report, Aug 22, 7:56 PM EDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
756 PM EDT SAT AUG 22 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     FLOOD            4 WSW BENHAM            36.29N 80.98W
08/22/2020                   WILKES             NC   911 CALL CENTER

            3000 BLOCK OF BYRD ROAD FLOODED AND
            IMPASSABLE.

&&

WP

Special weather statement, Aug 22, 8:10 PM EDT, 1 hour 54 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
810 PM EDT Sat Aug 22 2020

VAZ019-020-230045-
Bath-Alleghany-
810 PM EDT Sat Aug 22 2020

...A STRONG THUNDERSTORM WILL AFFECT
NORTHEASTERN ALLEGHANY AND SOUTH CENTRAL BATH COUNTIES IN WEST
CENTRAL VIRGINIA...

At 810 PM EDT, a strong thunderstorm was located over Clifton Forge,
moving northeast at 20 mph.

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

Locations impacted include...
Clifton Forge...
Iron Gate...
Nimrod Hall...
Douthat State Park...
Low Moor...
Longdale Furnace...
and Selma.

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

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 3803 7966 3793 7961 3788 7965 3787 7965
      3787 7964 3786 7961 3783 7962 3781 7964
      3778 7976 3780 7982 3776 7986 3775 7989
      3790 7991
TIME...MOT...LOC 0010Z 247DEG 18KT 3786 7983

RR

Special weather statement, Aug 22, 8:13 PM EDT, 1 hour 51 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
813 PM EDT Sat Aug 22 2020

VAZ019-023-024-230045-
Botetourt-Rockbridge-Alleghany-
813 PM EDT Sat Aug 22 2020

...A STRONG THUNDERSTORM WILL AFFECT
EAST CENTRAL ALLEGHANY...WEST CENTRAL ROCKBRIDGE AND NORTH CENTRAL
BOTETOURT COUNTIES IN WEST CENTRAL VIRGINIA...

At 813 PM EDT, a strong thunderstorm was located over Glen Wilton, or
near Clifton Forge, moving northeast at 15 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Collierstown...
Iron Gate...
Glen Wilton...
and Gala.

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

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 3773 7951 3766 7983 3774 7988 3780 7982
      3781 7965 3783 7962 3786 7962 3787 7959
TIME...MOT...LOC 0013Z 242DEG 13KT 3775 7979

RR

Special weather statement, Aug 22, 10:04 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 22, 8:01 PM EDT	Areal Flood Advisory	RNK	Alleghany, Bath, Botetourt, Rockbridge, City of Covington	19 min
Aug 22, 8:10 PM EDT	Special Weather Statement	RNK	Bath	35 min
Aug 22, 8:13 PM EDT	Special Weather Statement	RNK	City of Lexington	32 min
Aug 22, 8:20 PM EDT	Flash Flood Warning	RNK	Alleghany, Bath, Botetourt, Rockbridge	5 hr
Aug 22, 8:33 PM EDT	Areal Flood Advisory	RNK	Amherst, Bedford, Botetourt, Rockbridge	106 min
Aug 22, 8:47 PM EDT	Areal Flood Advisory	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	12 min
Aug 22, 8:59 PM EDT	Flash Flood Warning	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	3 hr
Aug 22, 11:10 PM EDT	Special Weather Statement	RNK	Appomattox	65 min
Aug 23, 1:32 PM EDT	Special Weather Statement	RNK	Franklin	28 min
Aug 23, 2:04 PM EDT	Special Weather Statement	RNK	Grayson	26 min
Aug 23, 2:17 PM EDT	Special Weather Statement	RNK	Botetourt	28 min
Aug 23, 2:30 PM EDT	Special Weather Statement	RNK	Carroll	30 min
Aug 23, 3:09 PM EDT	Special Weather Statement	RNK	City of Radford	36 min
Aug 23, 4:04 PM EDT	Special Weather Statement	RNK	Montgomery	41 min
Aug 23, 4:12 PM EDT	Special Weather Statement	RNK	City of Galax	33 min
Aug 23, 4:35 PM EDT	Special Weather Statement	RNK	Roanoke, City of Roanoke, City of Salem	55 min
Aug 23, 4:47 PM EDT	Special Weather Statement	RNK	Carroll, City of Galax	28 min
Aug 23, 4:52 PM EDT	Special Weather Statement	RNK	Franklin	38 min
Aug 23, 4:56 PM EDT	Special Weather Statement	RNK	Ashe	34 min
Aug 22, 9:38 PM EDT	Areal Flood Advisory	RNK	Greenbrier	112 min

Nearby

Special Weather Statements in Virginia, 2020 Every special weather statement in 2020

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.