Alert archive / West Virginia / Flood Watches in 2021

Flood Watch 2, NWS Charleston, WV

March 30, 2021McDowell County, Mingo County, West Virginia; Buchanan County, Dickenson County, Virginia

NWS Charleston, WV issued this flood watch at Mar 30, 2021, 4:56 AM EDT for McDowell County, Mingo County, West Virginia; Buchanan County, Dickenson County, Virginia. It took effect at Mar 31, 2021, 2:00 AM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Mar 30, 2021, 4:56 AM EDT (08:56 UTC)
In effect from
Mar 31, 2021, 2:00 AM EDT
Expired
Mar 31, 2021, 10:25 AM EDT
In force
8 hr
Issued by
NWS Charleston, WV
Flood severity
None

Counties Buchanan County, VA, Dickenson County, VA, McDowell County, WV, Mingo County, WV

The radar

The Charleston,WV radar (KRLX), 108 km from the middle of the area, began a volume at 08:57 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, 8.9 hours before the alert went out and 226 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 00:00Z on 2021-03-30Temperature 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 00:00Z on 2021-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.193958Sfc1 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
2456 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

041 
WGUS61 KRLX 300856
FFARLX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Charleston WV
456 AM EDT Tue Mar 30 2021

VAZ003-004-WVZ024-033-301700-
/O.NEW.KRLX.FA.A.0002.210331T0600Z-210401T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickenson-Buchanan-Mingo-McDowell-
Including the cities of Williamson, Grundy, Vansant, Gary, Welch, 
War, and Clintwood
456 AM EDT Tue Mar 30 2021

...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY 
EVENING...

The National Weather Service in Charleston has issued a

* Flood Watch for portions of southwest Virginia and southern West 
  Virginia, including the following areas, in southwest Virginia, 
  Buchanan and Dickenson. In southern West Virginia, McDowell and 
  Mingo.

* From late tonight through Wednesday evening.

* A strong cold front, capable to produce rainfall amounts between 1 
  and 3 inches, is expected Wednesday. The ground is already 
  saturated from recent rain, and additional heavy rainfall will 
  cause excess runoff and
  localized flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

ARJ
4 follow-up statements
547 
WGUS61 KRLX 301644
FFARLX

Flood Watch
National Weather Service Charleston WV
1244 PM EDT Tue Mar 30 2021

VAZ003-004-WVZ024-033-310300-
/O.CON.KRLX.FA.A.0002.210331T0600Z-210401T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickenson-Buchanan-Mingo-McDowell-
Including the cities of Williamson, Grundy, Vansant, Gary, Welch, 
War, and Clintwood
1244 PM EDT Tue Mar 30 2021

...FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY 
EVENING...

The Flood Watch continues for

* Portions of southwest Virginia and southern West Virginia, 
  including the following areas, in southwest Virginia, Buchanan and 
  Dickenson. In southern West Virginia, McDowell and Mingo.

* From late tonight through Wednesday evening.

* A strong cold front, capable of producing rainfall amounts between 
  1 and 2 inches, is expected Wednesday. The ground is already moist 
  from recent rain, and additional heavy rainfall will cause excess 
  runoff and
  localized flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

JP
032 
WGUS61 KRLX 310218
FFARLX

Flood Watch
National Weather Service Charleston WV
1018 PM EDT Tue Mar 30 2021

VAZ003-004-WVZ024-033-311030-
/O.CON.KRLX.FA.A.0002.210331T0600Z-210401T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickenson-Buchanan-Mingo-McDowell-
Including the cities of Williamson, Grundy, Vansant, Gary, Welch, 
War, and Clintwood
1018 PM EDT Tue Mar 30 2021

...FLOOD WATCH REMAINS IN EFFECT FROM 2 AM EDT WEDNESDAY THROUGH 
WEDNESDAY EVENING...

The Flood Watch continues for

* Portions of southwest Virginia and southern West Virginia, 
  including the following areas, in southwest Virginia, Buchanan and 
  Dickenson. In southern West Virginia, McDowell and Mingo.

* From 2 AM EDT Wednesday through Wednesday evening.

* A strong cold front, capable of producing rainfall amounts between 
  1 and 2 inches, is expected Wednesday. The ground is already moist 
  from recent rain, and additional heavy rainfall is likely to cause 
  excess runoff and localized flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

TRM
340 
WGUS61 KRLX 310933
FFARLX

Flood Watch
National Weather Service Charleston WV
533 AM EDT Wed Mar 31 2021

VAZ003-004-WVZ024-033-311745-
/O.CON.KRLX.FA.A.0002.000000T0000Z-210401T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickenson-Buchanan-Mingo-McDowell-
Including the cities of Clintwood, Grundy, Vansant, Williamson, 
Welch, Gary, and War
533 AM EDT Wed Mar 31 2021

...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

The Flood Watch continues for

* Portions of southwest Virginia and southern West Virginia, 
  including the following areas, in southwest Virginia, Buchanan 
  and Dickenson. In southern West Virginia, McDowell and Mingo. 

* Through this evening

* A strong cold front, capable of producing rainfall amounts
  between 1 and 2 inches, is expected today. The ground is 
  already moist from recent rain, and additional heavy rainfall is
  likely to cause excess runoff and localized flooding. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$
213 
WGUS61 KRLX 311425
FFARLX

Flood Watch
National Weather Service Charleston WV
1025 AM EDT Wed Mar 31 2021

VAZ003-004-WVZ024-033-311530-
/O.CAN.KRLX.FA.A.0002.000000T0000Z-210401T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickenson-Buchanan-Mingo-McDowell-
Including the cities of Williamson, Grundy, Vansant, Gary, Welch, 
War, and Clintwood
1025 AM EDT Wed Mar 31 2021

...FLOOD WATCH IS CANCELLED...

The Flood Watch for portions of southwest Virginia and southern West 
Virginia, including the following areas, in southwest Virginia, 
Buchanan and Dickenson. In southern West Virginia, McDowell and 
Mingo has been cancelled.

The Flood Watch is cancelled. Additional rainfall of around half an 
inch is expected through this evening with rainfall event totals of 
around 1 inch. This amount of rainfall is not expected to pose a 
risk of flooding.

$$

JP

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 3:07 PM EDTFreeze WatchRLXBarbour, Boone, Braxton, Cabell, Calhoun, Clay and 22 more23 hr
Mar 30, 3:07 PM EDTFreeze WarningRLXBarbour, Boone, Braxton, Cabell, Calhoun, Clay and 22 more43 hr

Nearby

Flood Watches in West Virginia, 2021Flood 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.