Alert archive / West Virginia / Flash Flood Watches in 2019

Flash Flood Watch 7, NWS Charleston, WV

July 22, 201934 counties in West Virginia; Lawrence County, Kentucky

NWS Charleston, WV issued this flash flood watch at Jul 22, 2019, 3:30 AM EDT for 34 counties in West Virginia; Lawrence County, Kentucky. It took effect at Jul 22, 2019, 5:00 AM EDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Jul 22, 2019, 3:30 AM EDT (07:30 UTC)
In effect from
Jul 22, 2019, 5:00 AM EDT
Expired
Jul 23, 2019, 2:00 AM EDT
In force
21 hr
Issued by
NWS Charleston, WV
Flood severity
None
All 35 counties

Lawrence County, KY, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mingo County, WV, Nicholas County, WV, Pleasants County, WV, Pocahontas County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Charleston,WV radar (KRLX), 54 km from the middle of the area, began a volume at 07:32 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, 7.5 hours before the alert went out and 214 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 2019-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 463 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2019-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939Sfc1 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
463 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1299 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this flash flood watch went out at Jul 22, 2:55 AM EDT, 35 minutes earlier.

Area forecast discussion, Jul 22, 2:55 AM EDT, 35 minutes before
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Hazardous weather outlook, Jul 21, 5:00 AM EDT, 22 hours 30 minutes before
Hazardous Weather Outlook
National Weather Service Charleston WV
500 AM EDT Sun Jul 21 2019

WVZ519-520-522>524-526-220900-
Northwest Nicholas-Southeast Nicholas-Southeast Webster-
Northwest Pocahontas-Southeast Pocahontas-Southeast Randolph-
500 AM EDT Sun Jul 21 2019

This Hazardous Weather Outlook is for portions of northeast West
Virginia and southeast West Virginia.

.DAY ONE...Today and Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a slight risk of excessive rainfall on Monday and Monday
night.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions by calling the toll-free spotter hotline, or by other
methods detailed at www.weather.gov/rlx/reports.

KYZ101>103-105-OHZ085>087-WVZ005>011-013>020-027>032-039-040-521-525-
220900-
Greenup-Carter-Boyd-Lawrence KY-Meigs-Gallia-Lawrence OH-Wayne-
Cabell-Mason-Jackson WV-Wood-Pleasants-Tyler-Lincoln-Putnam-Kanawha-
Roane-Wirt-Calhoun-Ritchie-Doddridge-Clay-Braxton-Gilmer-Lewis-
Harrison-Taylor-Upshur-Barbour-Northwest Webster-Northwest Randolph-
500 AM EDT Sun Jul 21 2019

This Hazardous Weather Outlook is for northeast Kentucky, portions
of southeast Ohio, and portions of central West Virginia, northeast
West Virginia, northern West Virginia, southern West Virginia and
western West Virginia.

.DAY ONE...Today and Tonight.

There is a marginal risk of severe thunderstorms today and early
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a slight risk of excessive rainfall on Monday and Monday
night.

There is a marginal risk of severe thunderstorms Monday and Monday
night.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions by calling the toll-free spotter hotline, or by other
methods detailed at www.weather.gov/rlx/reports.

OHZ066-067-075-076-083-084-220900-
Perry-Morgan-Athens-Washington-Jackson OH-Vinton-
500 AM EDT Sun Jul 21 2019

This Hazardous Weather Outlook is for portions of southeast Ohio.

.DAY ONE...Today and Tonight.

There is a marginal risk of severe thunderstorms today and early
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a marginal risk of severe thunderstorms Monday and Monday
night.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions by calling the toll-free spotter hotline, or by other
methods detailed at www.weather.gov/rlx/reports.

VAZ003-004-WVZ024>026-033-034-515>518-220900-
Dickenson-Buchanan-Mingo-Logan-Boone-McDowell-Wyoming-
Northwest Raleigh-Southeast Raleigh-Northwest Fayette-
Southeast Fayette-
500 AM EDT Sun Jul 21 2019

This Hazardous Weather Outlook is for southwest Virginia, and
portions of southeast West Virginia and southern West Virginia.

.DAY ONE...Today and Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a slight risk of excessive rainfall on Monday and Monday
night.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions by calling the toll-free spotter hotline, or by other
methods detailed at www.weather.gov/rlx/reports.

In the hours before

Special weather statement, Jul 21, 9:55 PM EDT, 5 hours 35 minutes before
Special Weather Statement
National Weather Service Charleston WV
955 PM EDT Sun Jul 21 2019

WVZ015-016-018-027>029-220230-
Calhoun-Clay-Roane-Kanawha-Gilmer-Braxton-
955 PM EDT Sun Jul 21 2019

...A STRONG THUNDERSTORM WILL AFFECT CALHOUN...NORTHEASTERN
KANAWHA...SOUTHWESTERN GILMER...SOUTHWESTERN BRAXTON...EASTERN ROANE
AND NORTHWESTERN CLAY COUNTIES...

At 954 PM EDT, a strong thunderstorm was located over Wallback, or 9
miles northwest of Clay, moving northeast at 40 mph.

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

Locations impacted include...
Grantsville, Clay, Clendenin, Arnoldsburg, Big Otter, Wallback, Amma,
Nebo, Shock, Millstone, Procious, Rosedale, Mount Zion, Left Hand,
Ivydale, Stumptown, Frametown, Wilsie, Tariff and Servia.

This includes Interstate 79 between mile markers 20 and 51.

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

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to travel across
flooded roads. Find alternate routes. It takes only a few inches of
swiftly flowing water to carry vehicles away.

LAT...LON 3838 8118 3847 8138 3897 8120 3875 8069
TIME...MOT...LOC 0154Z 216DEG 33KT 3859 8117

21
Special weather statement, Jul 22, 2:06 AM EDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service Charleston WV
206 AM EDT Mon Jul 22 2019

OHZ066-220700-
Perry-
206 AM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN PERRY COUNTY...

At 205 AM EDT, Heavy rains were occurring across parts of Perry
county from repeated thunderstorms. This may cause localized
flooding.

Locations impacted include...
Somerset, Thornport, Harbor Hills, Thornville and Glenford.

Do not drive your vehicle through flooded roadways.

Excessive runoff from heavy rainfall will cause elevated levels on
small creeks and streams, and ponding of water on country roads and
farmland along the banks of creeks and streams.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to travel across
flooded roads. Find alternate routes. It takes only a few inches of
swiftly flowing water to carry vehicles away.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

LAT...LON 3993 8242 3992 8241 3991 8216 3984 8217
      3974 8239 3974 8241 3983 8240 3984 8247
      3993 8246
TIME...MOT...LOC 0605Z 239DEG 49KT 3990 8226

14

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 8:18 PM EDTSpecial Weather StatementRLXLincoln27 min
Jul 21, 8:20 PM EDTSevere Thunderstorm WarningRLXBoone, Kanawha, Lincoln40 min
Jul 21, 9:27 PM EDTSpecial Weather StatementRLXClay33 min
Jul 21, 9:55 PM EDTSpecial Weather StatementRLXCalhoun, Clay35 min
Jul 21, 10:17 PM EDTSevere Thunderstorm WarningRLXCalhoun, Gilmer28 min
Jul 22, 4:41 PM EDTSpecial Weather StatementRLXBarbour, Calhoun, Doddridge, Gilmer, Harrison, Jackson and 5 more49 min
Jul 22, 5:04 PM EDTFlash Flood WarningRLXDoddridge, Harrison, Ritchie4 hr
Jul 22, 5:35 PM EDTSpecial Weather StatementRLXCalhoun, Gilmer, Wirt40 min
Jul 22, 5:45 PM EDTSpecial Weather StatementRLXBraxton, Clay45 min
Jul 22, 5:48 PM EDTSpecial Weather StatementRLXCabell27 min
Jul 22, 6:20 PM EDTSpecial Weather StatementRLXCabell, Lincoln, Wayne55 min
Jul 22, 6:28 PM EDTSpecial Weather StatementRLXMingo, Wyoming32 min
Jul 22, 6:33 PM EDTFlash Flood WarningRLXCabell, Wayne3 hr
Jul 22, 6:42 PM EDTFlash Flood WarningRLXWayne3 hr
Jul 22, 6:51 PM EDTSpecial Weather StatementRLXBraxton, Clay, Lewis24 min
Jul 22, 7:05 PM EDTSpecial Weather StatementRLXBoone, Lincoln25 min
Jul 22, 7:10 PM EDTFlash Flood WarningRLXBoone, Lincoln, Logan, Mingo, Wayne3 hr
Jul 22, 7:36 PM EDTSpecial Weather StatementRLXBoone24 min
Jul 22, 7:45 PM EDTSpecial Weather StatementRLXBarbour, Upshur, Webster45 min
Jul 22, 7:49 PM EDTFlash Flood WarningRLXBoone, Fayette, Kanawha, Logan, Raleigh3 hr
Jul 22, 2:06 AM EDTSpecial Weather StatementRLXPerry54 min
Jul 22, 2:20 AM EDTFlash Flood WarningRLXPerry3 hr
Jul 22, 5:25 PM EDTSpecial Weather StatementRLXCarter, Lawrence65 min

Nearby

Flash Flood Watches in West Virginia, 2019Flash Flood Watches in Kentucky, 2019Every flash flood watch in 2019

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.