Alert archive / Virginia / Flood Watches in 2021

Flood Watch 2, NWS Blacksburg, VA

March 1, 2021Bland County, Tazewell County, Virginia

NWS Blacksburg, VA issued this flood watch at Mar 1, 2021, 7:20 AM EST for Bland County, Tazewell County, Virginia. It was in force for 2 min.

The area

The counties it named.

The facts

Issued
Mar 1, 2021, 7:20 AM EST (12:20 UTC)
Expired
Mar 1, 2021, 7:22 AM EST
In force
2 min
Issued by
NWS Blacksburg, VA
Flood severity
None

Counties Bland County, VA, Tazewell County, VA

The radar

The Roanoke radar (KFCX), 96 km from the middle of the area, began a volume at 12:20 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, 0.3 hours before the alert went out and 164 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2021-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2021-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -301 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
808 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-301 m²/s²
0-3 km storm-relative helicity
-240 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

388 
WGUS61 KRNK 011220
FFARNK

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Blacksburg VA
720 AM EST Mon Mar 1 2021

.The Flood Watch for portions of west central Virginia and southeast 
West Virginia, including the following areas, in west central 
Virginia, Alleghany VA and Bath. In southeast West Virginia, Eastern 
Greenbrier, Mercer, Monroe, Summers and Western Greenbrier will 
expire AT 7 AM EST this morning.

VAZ007-010-011700-
/O.EXP.KRNK.FA.A.0001.000000T0000Z-210301T1200Z/
/O.NEW.KRNK.FA.A.0002.210301T1220Z-210301T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tazewell-Bland-
Including the cities of Bland and Tazewell
720 AM EST Mon Mar 1 2021

...FLOOD WATCH HAS EXPIRED...

The National Weather Service in Blacksburg has issued a

* Flood Watch for a portion of southwest Virginia, including the 
  following areas, Bland and Tazewell.

* Until Noon EST today

* The Flood Watch has been replaced with specific Flood Warnings for 
  western Greenbrier, western Bath, and other surrounding counties 
  as needed this morning.  Rainfall will finally begin to decrease 
  through the morning hours, but the threat for areal and river 
  flooding will continue in the areas with specific Flood Warnings 
  for several more hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch means there is a potential for flooding based on 
current forecasts. You should monitor later forecasts and be alert 
for possible flood warnings. Those living in areas prone to flooding 
should be prepared to take action should flooding develop.

&&

The Flood Watch for a portion of southwest Virginia, including the 
following areas, Bland and Tazewell has expired.

$$

VAZ019-020-WVZ042>044-507-508-011330-
/O.EXP.KRNK.FA.A.0001.000000T0000Z-210301T1200Z/
Alleghany VA-Bath-Mercer-Summers-Monroe-Eastern Greenbrier-Western
Greenbrier-
Including the cities of Quinwood, Lewisburg, Duo, Hix, Bluefield, 
Alderson, Union, Covington, Flat Top, Hot Springs, White Sulphur 
Springs, Hinton, Clifton Forge, and Rainelle
720 AM EST Mon Mar 1 2021

...FLOOD WATCH HAS EXPIRED...

The Flood Watch for portions of west central Virginia and southeast 
West Virginia, including the following areas, in west central 
Virginia, Alleghany VA and Bath. In southeast West Virginia, Eastern 
Greenbrier, Mercer, Monroe, Summers and Western Greenbrier has 
expired.

The Flood Watch is replaced with warning.

$$

RAB
1 follow-up statement
616 
WGUS61 KRNK 011222
FFARNK

Flood Watch
National Weather Service Blacksburg VA
722 AM EST Mon Mar 1 2021

VAZ007-010-011330-
/O.CAN.KRNK.FA.A.0002.000000T0000Z-210301T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tazewell-Bland-
Including the cities of Bland and Tazewell
722 AM EST Mon Mar 1 2021

...FLOOD WATCH IS CANCELLED...
...FLOOD WATCH REPLACED WITH SPECIFIC FLOOD WARNINGS...

The Flood Watch for a portion of southwest Virginia, including the 
following areas, Bland and Tazewell has been cancelled.

The Flood Watch has been replaced with specific Flood Warnings for 
impacted counties and areas for areal flooding and river flooding.  
However, widespread rainfall will begin to decrease through the 
morning.

$$

RAB

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 7:07 PM ESTFlash Flood WarningRNKBath6 hr
Feb 28, 8:41 PM ESTDense Fog AdvisoryRNKAmherst, Appomattox, Bedford, Botetourt, Buckingham, Campbell and 14 more7 hr
Feb 28, 9:18 PM ESTSpecial Weather StatementRNKAlleghany, Bath, Craig, City of Covington27 min
Mar 1, 1:14 AM ESTAreal Flood WarningRNKAlleghany, Bath12 hr
Mar 1, 7:31 AM ESTRiver Flood WarningRNKTazewell11 hr
Mar 1, 7:43 AM ESTAreal Flood WarningRNKTazewell25 hr
Mar 1, 12:49 PM ESTAreal Flood AdvisoryRNKBath4 hr
Mar 1, 1:22 PM ESTWind AdvisoryRNKBath12 hr
Mar 1, 4:13 PM ESTAreal Flood AdvisoryRNKAlleghany, Botetourt9 hr

Nearby

Flood Watches in Virginia, 2021Every 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.