Alert archive / Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 9, NWS Blacksburg, VA

June 11, 2021Appomattox County, Buckingham County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 11, 2021, 3:34 PM EDT for Appomattox County, Buckingham County, Virginia. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 11, 2021, 3:34 PM EDT (19:34 UTC)
Expired: Jun 11, 2021, 7:30 PM EDT
In force: 4 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Appomattox County, VA, Buckingham County, VA

The radar

The Roanoke radar (KFCX), 151 km from the middle of the area, began a volume at 19:33 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.

What was reported inside it

Time	Report	Where	Remark
Jun 11, 6:04 PM EDT	FLASH FLOOD	4 E Appomattox, VA	WATER FLOWING OVER A BRIDGE AT OLD GRIST MILL ROAD. THE ROAD WAS BARELY PASSABLE AT THE TIME, BUT LAW ENFORCEMENT AND VDOT ADVISED IT WOULD LIKELY NEED TO BE IMPASSABLE SOON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 7.6 hours before the alert went out and 79 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: 139 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 780 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

257 
WGUS51 KRNK 111934
FFWRNK
VAC011-029-112330-
/O.NEW.KRNK.FF.W.0009.210611T1934Z-210611T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Blacksburg VA
334 PM EDT Fri Jun 11 2021

The National Weather Service in Blacksburg has issued a

* Flash Flood Warning for...
  Appomattox County in central Virginia...
  Southwestern Buckingham County in central Virginia...

* Until 730 PM EDT.

* At 334 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  Appomattox, Hixburg, Appomattox National Historic Park, Tower 
  Hill, Toga, Evergreen and Andersonville.

This includes the following streams and drainages...
  Bowler Creek, Bishop Creek, Abbott Branch, Bear Branch, Bent 
  Creek, Blackfoot Creek, Brickyard Branch, Appomattox River and 
  Beasley Creek.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, urban areas, highways, streets and underpasses 
as well as other drainage areas and low lying spots.

When it is safe to do so, please send your reports of flooding, 
including mudslides or flooded roads, to the National Weather 
Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports 
and pictures can also be shared on the National Weather Service 
Blacksburg Facebook page and on Twitter.

&&

LAT...LON 3749 7894 3753 7839 3746 7838 3733 7847
      3733 7851 3735 7853 3735 7855 3736 7856
      3736 7858 3738 7859 3739 7858 3740 7859
      3734 7860 3729 7865 3727 7893 3743 7902

FLASH FLOOD...RADAR INDICATED

$$

BMG

2 follow-up statements

094 
WGUS71 KRNK 112140
FFSRNK

Flash Flood Statement
National Weather Service Blacksburg VA
540 PM EDT Fri Jun 11 2021

VAC011-029-112330-
/O.CON.KRNK.FF.W.0009.000000T0000Z-210611T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Appomattox VA-Buckingham VA-
540 PM EDT Fri Jun 11 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM EDT THIS 
EVENING FOR APPOMATTOX AND SOUTHWESTERN BUCKINGHAM COUNTIES...

At 540 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2 inches of rain have 
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Doppler radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other
         drainage and low lying areas.

Some locations that will experience flash flooding include...
  Appomattox, Hixburg, Appomattox National Historic Park, Tower 
  Hill, Toga, Evergreen and Andersonville.

This includes the following streams and drainages...
  Bowler Creek, Bishop Creek, Abbott Branch, Bear Branch, Bent 
  Creek, Blackfoot Creek, Brickyard Branch, Appomattox River and 
  Beasley Creek.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small 
creeks and streams, urban areas, highways, streets and underpasses 
as well as other drainage areas and low lying spots.

When it is safe to do so, please send your reports of flooding, 
including mudslides or flooded roads, to the National Weather 
Service by calling toll free at 1...8 6 6...2 1 5...4 3 2 4. Reports 
and pictures can also be shared on the National Weather Service 
Blacksburg Facebook page and on Twitter.

&&

LAT...LON 3749 7894 3753 7839 3746 7838 3733 7847
      3733 7851 3735 7853 3735 7855 3736 7856
      3736 7858 3738 7859 3739 7858 3740 7859
      3734 7860 3729 7865 3727 7893 3743 7902

FLASH FLOOD...RADAR INDICATED

$$

BMG

677 
WGUS71 KRNK 112322
FFSRNK

Flash Flood Statement
National Weather Service Blacksburg VA
722 PM EDT Fri Jun 11 2021

VAC011-029-112332-
/O.EXP.KRNK.FF.W.0009.000000T0000Z-210611T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Appomattox VA-Buckingham VA-
722 PM EDT Fri Jun 11 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 730 PM EDT THIS EVENING FOR 
APPOMATTOX AND SOUTHWESTERN BUCKINGHAM COUNTIES...

Flash flooding is no longer expected to pose a threat. Please 
continue to heed remaining road closures. A Flood Warning will be 
issued to cover ongoing flooding across Buckingham and Appomattox 
Counties.

A Flash Flood Watch remains in effect until 1200 AM EDT for portions 
of North Carolina...Virginia and southeast West Virginia.

LAT...LON 3749 7894 3753 7839 3746 7838 3733 7847
      3733 7851 3735 7853 3735 7855 3736 7856
      3736 7858 3738 7859 3739 7858 3740 7859
      3734 7860 3729 7865 3727 7893 3743 7902

$$

BMG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 10:16 PM EDT	Special Weather Statement	RNK	City of Galax	29 min
Jun 10, 10:47 PM EDT	Special Weather Statement	RNK	Carroll	28 min
Jun 11, 2:46 AM EDT	Special Weather Statement	RNK	Appomattox	59 min
Jun 11, 12:58 PM EDT	Special Weather Statement	RNK	Patrick	32 min
Jun 11, 1:46 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania, City of Danville	40 min
Jun 11, 2:17 PM EDT	Special Weather Statement	RNK	City of Martinsville	28 min
Jun 11, 2:51 PM EDT	Special Weather Statement	RNK	Pittsylvania	24 min
Jun 11, 3:05 PM EDT	Flash Flood Warning	RNK	Pittsylvania	118 min
Jun 11, 3:13 PM EDT	Special Weather Statement	RNK	Halifax	32 min
Jun 11, 3:21 PM EDT	Areal Flood Advisory	RNK	Appomattox, Buckingham	114 min
Jun 11, 3:41 PM EDT	Special Weather Statement	RNK	Buckingham	34 min
Jun 11, 3:51 PM EDT	Areal Flood Advisory	RNK	Amherst, Bedford, Campbell, City of Lynchburg	3 hr
Jun 11, 4:05 PM EDT	Areal Flood Advisory	RNK	Alleghany, Bath	5 hr
Jun 11, 4:13 PM EDT	Flash Flood Warning	RNK	Amherst, Bedford, Campbell, Rockbridge, City of Lynchburg	4 hr
Jun 11, 4:14 PM EDT	Special Weather Statement	RNK	Pulaski, City of Radford	46 min
Jun 11, 4:56 PM EDT	Areal Flood Advisory	RNK	Alleghany, Botetourt, Rockbridge	5 hr
Jun 11, 5:22 PM EDT	Special Weather Statement	RNK	Bland, Tazewell	53 min
Jun 11, 5:55 PM EDT	Special Weather Statement	RNK	Bland	50 min
Jun 11, 6:01 PM EDT	Special Weather Statement	RNK	Bedford	44 min
Jun 11, 6:21 PM EDT	Areal Flood Advisory	RNK	Bedford, Botetourt	4 hr
Jun 11, 6:41 PM EDT	Special Weather Statement	RNK	Bedford	34 min
Jun 11, 7:08 PM EDT	Areal Flood Advisory	RNK	Bedford, Campbell	2 hr
Jun 11, 7:25 PM EDT	Areal Flood Warning	RNK	Appomattox, Buckingham	6 hr
Jun 11, 7:51 PM EDT	Areal Flood Advisory	RNK	Roanoke, City of Roanoke, City of Salem	111 min

Nearby

Flash Flood Warnings in Virginia, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.