Alert archive / Virginia / Flash Flood Watches in 2021
Flash Flood Watch 5, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood watch at Jul 1, 2021, 10:00 AM EDT for 6 counties in North Carolina; 23 counties in Virginia; 4 counties in West Virginia. It took effect at Jul 1, 2021, 12:00 PM EDT. It was in force for 19 hr.
The area
The counties it named.
The facts
- Issued
- Jul 1, 2021, 10:00 AM EDT (14:00 UTC)
- In effect from
- Jul 1, 2021, 12:00 PM EDT
- Expired
- Jul 2, 2021, 6:40 AM EDT
- In force
- 19 hr
- Issued by
- NWS Blacksburg, VA
- Flood severity
- None
All 33 counties
Alleghany County, NC, Ashe County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Alleghany County, VA, Bath County, VA, Bland County, VA, Botetourt County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Lexington, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Giles County, VA, Grayson County, VA, Montgomery County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Greenbrier County, WV, Mercer County, WV, Monroe County, WV, Summers County, WV
The radar
The Roanoke radar (KFCX), 30 km from the middle of the area, began a volume at 14:01 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, 2.0 hours before the alert went out and 95 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.
- Mixed-layer CAPE
- 312 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 989 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
015 WGUS61 KRNK 011400 FFARNK URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Blacksburg VA 1000 AM EDT Thu Jul 1 2021 VAZ007-009-WVZ042>044-507-508-012200- /O.NEW.KRNK.FF.A.0005.210701T1600Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tazewell-Smyth-Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier- Including the cities of Duo, Hix, Bluefield, Alderson, Tazewell, Union, Flat Top, White Sulphur Springs, Quinwood, Marion, Hinton, Lewisburg, and Rainelle 1000 AM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... The National Weather Service in Blacksburg has issued a * Flash Flood Watch for portions of southwest Virginia and southeast West Virginia, including the following areas, in southwest Virginia, Smyth and Tazewell. In southeast West Virginia, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier. * Through Friday morning. * Excessive moisture will continue to build this afternoon and evening ahead of an approaching cold front. Showers and thunderstorms will have the potential of producing prolonged periods of heavy rainfall, which may lead to localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 16
6 follow-up statements
650 WGUS61 KRNK 011904 FFARNK Flood Watch National Weather Service Blacksburg VA 304 PM EDT Thu Jul 1 2021 VAZ007-009-WVZ042>044-507-508-020315- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tazewell-Smyth-Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier- Including the cities of Duo, Hix, Bluefield, Alderson, Tazewell, Union, Flat Top, White Sulphur Springs, Quinwood, Marion, Hinton, Lewisburg, and Rainelle 304 PM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING... The Flash Flood Watch continues for * Portions of southwest Virginia and southeast West Virginia, including the following areas, in southwest Virginia, Smyth and Tazewell. In southeast West Virginia, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier. * Through Friday morning. * Excessive moisture will continue to build into the evening ahead of an approaching cold front. Showers and thunderstorms will have the potential of producing prolonged periods of heavy rainfall, which may lead to localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 16
844 WGUS61 KRNK 012021 FFARNK URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Blacksburg VA 421 PM EDT Thu Jul 1 2021 .Numerous showers and thunderstorms will move across southwest Virginia, southeast West Virginia and northwest North Carolina this evening and overnight ahead of an approaching cold front. NCZ001>003-018>020-VAZ010>020-022>024-020430- /O.EXA.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ashe-Alleghany NC-Surry-Watauga-Wilkes-Yadkin-Bland-Giles-Wythe- Pulaski-Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath- Roanoke-Botetourt-Rockbridge- Including the cities of Roanoke, Wilkesboro, Sparta, Pulaski, Covington, Independence, Fincastle, Buena Vista, Floyd, Hot Springs, Clifton Forge, Wytheville, Yadkinville, Whitetop, Volney, Pearisburg, Blacksburg, West Jefferson, Lexington, Radford, Boone, New Castle, Dobson, Galax, Salem, Bland, and Troutdale 421 PM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... The National Weather Service in Blacksburg has expanded the * Flash Flood Watch to include portions of North Carolina and Virginia, including the following areas, in North Carolina, Alleghany NC, Ashe, Surry, Watauga, Wilkes and Yadkin. In Virginia, Alleghany VA, Bath, Bland, Botetourt, Carroll, Craig, Floyd, Giles, Grayson, Montgomery, Pulaski, Roanoke, Rockbridge and Wythe. * Through Friday morning. * Torrential rainfall rates may produce flash flooding. Some locations may have repeated rounds of very heavy rainfall. * Roads and underpasses may quickly become covered with fast flowing water and impassible. Streams and creeks may rapidly rise out of their banks leading to flooding of roads, buildings and nearby areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ VAZ007-009-WVZ042>044-507-508-020430- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tazewell-Smyth-Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier- Including the cities of Duo, Hix, Bluefield, Alderson, Tazewell, Union, Flat Top, White Sulphur Springs, Quinwood, Marion, Hinton, Lewisburg, and Rainelle 421 PM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING... The Flash Flood Watch continues for * Portions of southwest Virginia and southeast West Virginia, including the following areas, in southwest Virginia, Smyth and Tazewell. In southeast West Virginia, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier. * Through Friday morning. * Torrential rainfall rates may produce flash flooding. Some locations may have repeated rounds of very heavy rainfall. * Roads and underpasses may quickly become covered with fast flowing water and impassible. Streams and creeks may rapidly rise out of their banks leading to flooding of roads, buildings and nearby areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ AS
929 WGUS61 KRNK 020218 FFARNK Flood Watch National Weather Service Blacksburg VA 1018 PM EDT Thu Jul 1 2021 VAZ007-009-WVZ042>044-507-508-021200- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tazewell-Smyth-Mercer-Summers-Monroe-Eastern Greenbrier-Western Greenbrier- Including the cities of Duo, Hix, Bluefield, Alderson, Tazewell, Union, Flat Top, White Sulphur Springs, Quinwood, Marion, Hinton, Lewisburg, and Rainelle 1018 PM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT FRIDAY... The Flash Flood Watch continues for * Portions of southwest Virginia and southeast West Virginia, including the following areas, in southwest Virginia, Smyth and Tazewell. In southeast West Virginia, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier. * Until 8 AM EDT Friday. * Several rounds of showers and thunderstorms are expected tonight. Some of the storms will produce heavy rain which may result in localized flooding. * Roads and underpasses may quickly become covered with fast flowing water and impassible. Streams and creeks may rapidly rise out of their banks leading to flooding of roads, buildings and nearby areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ NCZ001>003-018>020-VAZ010>020-022>024-021200- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ashe-Alleghany NC-Surry-Watauga-Wilkes-Yadkin-Bland-Giles-Wythe- Pulaski-Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath- Roanoke-Botetourt-Rockbridge- Including the cities of Roanoke, Wilkesboro, Sparta, Pulaski, Covington, Independence, Fincastle, Buena Vista, Floyd, Hot Springs, Clifton Forge, Wytheville, Yadkinville, Whitetop, Volney, Pearisburg, Blacksburg, West Jefferson, Lexington, Radford, Boone, New Castle, Dobson, Galax, Salem, Bland, and Troutdale 1018 PM EDT Thu Jul 1 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT FRIDAY... The Flash Flood Watch continues for * Portions of North Carolina and Virginia, including the following areas, in North Carolina, Alleghany NC, Ashe, Surry, Watauga, Wilkes and Yadkin. In Virginia, Alleghany VA, Bath, Bland, Botetourt, Carroll, Craig, Floyd, Giles, Grayson, Montgomery, Pulaski, Roanoke, Rockbridge and Wythe. * Until 8 AM EDT Friday. * Several rounds of showers and a few thunderstorms are expected overnight. This rain will fall on already soaked ground and may result in flash flooding. * Roads and underpasses may quickly become covered with fast flowing water and impassible. Streams and creeks may rapidly rise out of their banks leading to flooding of roads, buildings and nearby areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ AS
517 WGUS61 KRNK 020611 FFARNK Flood Watch National Weather Service Blacksburg VA 211 AM EDT Fri Jul 2 2021 VAZ011-018>020-023-024-WVZ042>044-507-508-020715- /O.CAN.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Giles-Craig-Alleghany VA-Bath-Botetourt-Rockbridge-Mercer-Summers- Monroe-Eastern Greenbrier-Western Greenbrier- Including the cities of New Castle, Quinwood, Fincastle, Buena Vista, Alderson, Hix, Bluefield, Duo, Pearisburg, Lexington, Lewisburg, Union, Covington, Flat Top, Hot Springs, White Sulphur Springs, Hinton, Clifton Forge, and Rainelle 211 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of Virginia and southeast West Virginia, including the following areas, in Virginia, Alleghany VA, Bath, Botetourt, Craig, Giles and Rockbridge. In southeast West Virginia, Eastern Greenbrier, Mercer, Monroe, Summers and Western Greenbrier has been cancelled. The Flash Flood Watch is cancelled. Excessive rainfall rates are not expected this morning, so the threat of flash flooding has ended. $$ VAZ007-009-021200- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Tazewell-Smyth- Including the cities of Marion and Tazewell 211 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... The Flash Flood Watch continues for * A portion of southwest Virginia, including the following areas, Smyth and Tazewell. * Until 8 AM EDT this morning. * Periods of moderate to at times heavy rain will persist early this morning. This could result in isolated flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ NCZ001>003-018>020-VAZ010-012>017-022-021200- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ashe-Alleghany NC-Surry-Watauga-Wilkes-Yadkin-Bland-Wythe-Pulaski- Montgomery-Grayson-Carroll-Floyd-Roanoke- Including the cities of Roanoke, Wilkesboro, Yadkinville, Whitetop, Sparta, Floyd, Volney, Blacksburg, West Jefferson, Galax, Pulaski, Wytheville, Dobson, Salem, Radford, Boone, Bland, Independence, and Troutdale 211 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... The Flash Flood Watch continues for * Portions of North Carolina and Virginia, including the following areas, in North Carolina, Alleghany NC, Ashe, Surry, Watauga, Wilkes and Yadkin. In Virginia, Bland, Carroll, Floyd, Grayson, Montgomery, Pulaski, Roanoke and Wythe. * Until 8 AM EDT this morning. * Periods of moderate to at times heavy rain will persist early this morning. This could result in isolated flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ WP
798 WGUS61 KRNK 020951 FFARNK Flood Watch National Weather Service Blacksburg VA 551 AM EDT Fri Jul 2 2021 NCZ001-002-018-VAZ007-009-010-012>017-022-021100- /O.CAN.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Wythe-Pulaski- Montgomery-Grayson-Carroll-Floyd-Roanoke- Including the cities of Roanoke, Wytheville, Whitetop, Galax, Sparta, Volney, Blacksburg, West Jefferson, Tazewell, Salem, Pulaski, Floyd, Marion, Radford, Boone, Bland, Independence, and Troutdale 551 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of northwest North Carolina and Virginia, including the following areas, in northwest North Carolina, Alleghany NC, Ashe and Watauga. In Virginia, Bland, Carroll, Floyd, Grayson, Montgomery, Pulaski, Roanoke, Smyth, Tazewell and Wythe has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ NCZ003-019-020-021200- /O.CON.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Surry-Wilkes-Yadkin- Including the cities of Wilkesboro, Dobson, and Yadkinville 551 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... The Flash Flood Watch continues for * Portions of north central North Carolina and northwest North Carolina, including the following areas, in north central North Carolina, Surry. In northwest North Carolina, Wilkes and Yadkin. * Until 8 AM EDT this morning. * Periods of moderate to at times heavy rain will persist early this morning. This could result in isolated flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ WP
980 WGUS61 KRNK 021040 FFARNK Flood Watch National Weather Service Blacksburg VA 640 AM EDT Fri Jul 2 2021 NCZ003-019-020-021145- /O.CAN.KRNK.FF.A.0005.000000T0000Z-210702T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Surry-Wilkes-Yadkin- Including the cities of Wilkesboro, Dobson, and Yadkinville 640 AM EDT Fri Jul 2 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of north central North Carolina and northwest North Carolina, including the following areas, in north central North Carolina, Surry. In northwest North Carolina, Wilkes and Yadkin has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ WP
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 12:36 PM EDT | Areal Flood Advisory | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 97 min |
| Jul 1, 12:54 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 4 hr |
| Jul 1, 3:22 PM EDT | Special Weather Statement | RNK | Ashe | 23 min |
| Jul 1, 5:29 PM EDT | Areal Flood Advisory | RNK | Alleghany, Ashe, Watauga | 3 hr |
| Jun 30, 8:41 PM EDT | Special Weather Statement | RNK | City of Buena Vista | 34 min |
| Jun 30, 9:32 PM EDT | Special Weather Statement | RNK | Bedford | 28 min |
| Jul 1, 11:58 AM EDT | Special Weather Statement | RNK | Bath | 32 min |
| Jul 1, 1:43 PM EDT | Special Weather Statement | RNK | Floyd | 32 min |
| Jul 1, 2:11 PM EDT | Special Weather Statement | RNK | Franklin | 34 min |
| Jul 1, 2:39 PM EDT | Special Weather Statement | RNK | Appomattox | 36 min |
| Jul 1, 2:46 PM EDT | Special Weather Statement | RNK | Bedford | 29 min |
| Jul 1, 2:48 PM EDT | Special Weather Statement | RNK | Montgomery, Roanoke | 27 min |
| Jul 1, 3:08 PM EDT | Special Weather Statement | RNK | Buckingham | 37 min |
| Jul 1, 3:29 PM EDT | Special Weather Statement | RNK | Appomattox | 31 min |
| Jul 1, 3:45 PM EDT | Flash Flood Warning | RNK | Montgomery | 6 hr |
| Jul 1, 3:48 PM EDT | Special Weather Statement | RNK | Charlotte | 42 min |
| Jul 1, 4:13 PM EDT | Special Weather Statement | RNK | Pittsylvania | 47 min |
| Jul 1, 4:39 PM EDT | Special Weather Statement | RNK | Charlotte | 21 min |
| Jul 1, 4:46 PM EDT | Special Weather Statement | RNK | Craig | 44 min |
| Jul 1, 4:48 PM EDT | Special Weather Statement | RNK | Smyth | 42 min |
| Jul 1, 5:06 PM EDT | Special Weather Statement | RNK | Charlotte | 39 min |
| Jul 1, 5:10 PM EDT | Special Weather Statement | RNK | Franklin | 35 min |
| Jul 1, 5:47 PM EDT | Areal Flood Advisory | RNK | Campbell, Charlotte, Halifax | 6 hr |
| Jul 1, 5:57 PM EDT | Special Weather Statement | RNK | Franklin | 33 min |
| Jul 1, 6:09 PM EDT | Special Weather Statement | RNK | Pittsylvania | 36 min |
| Jul 1, 6:21 PM EDT | Areal Flood Advisory | RNK | Franklin | 63 min |
| Jul 1, 6:48 PM EDT | Special Weather Statement | RNK | Halifax | 42 min |
| Jul 1, 7:24 PM EDT | Flash Flood Warning | RNK | Franklin | 2 hr |
| Jul 1, 11:57 AM EDT | Special Weather Statement | RNK | Greenbrier | 33 min |
| Jul 1, 12:20 PM EDT | Severe Thunderstorm Warning | RNK | Greenbrier, Summers | 55 min |
Nearby
Flash Flood Watches in Virginia, 2021Flash Flood Watches in North Carolina, 2021Flash Flood Watches in West Virginia, 2021Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.