Alert archive / West Virginia / Flood Watches in 2018

Flood Watch 10, NWS Charleston, WV

September 8, 201826 counties in West Virginia; 9 counties in Ohio; 4 counties in Kentucky

NWS Charleston, WV issued this flood watch at Sep 8, 2018, 3:34 AM EDT for 26 counties in West Virginia; 9 counties in Ohio; 4 counties in Kentucky. It took effect at Sep 8, 2018, 8:00 PM EDT. It was in force for 32 hr.

The area

The counties it named.

The facts

Issued
Sep 8, 2018, 3:34 AM EDT (07:34 UTC)
In effect from
Sep 8, 2018, 8:00 PM EDT
Expired
Sep 10, 2018, 4:15 AM EDT
In force
32 hr
Issued by
NWS Charleston, WV
Flood severity
None
All 39 counties

Boyd County, KY, Carter County, KY, Greenup County, KY, Lawrence County, KY, Athens County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Morgan County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Barbour County, WV, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge 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, Mingo County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 57 km from the middle of the area, began a volume at 07:38 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.6 hours before the alert went out and 199 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, Cncnati-Daytn, OH at 00:00Z on 2018-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 216 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, Cncnati-Daytn, OH at 00:00Z on 2018-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
216 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
769 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this 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 flood watch went out at Sep 8, 1:40 AM EDT, 1 hour 54 minutes earlier.

Area forecast discussion, Sep 8, 1:40 AM EDT, 1 hour 54 minutes before
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Hazardous weather outlook, Sep 7, 4:42 AM EDT, 22 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Charleston WV
Issued by National Weather Service Pittsburgh PA
442 AM EDT Fri Sep 7 2018

OHZ066-067-075-076-083>085-WVZ009>011-017-019-020-031-032-080845-
Perry-Morgan-Athens-Washington-Jackson OH-Vinton-Meigs-Wood-
Pleasants-Tyler-Wirt-Ritchie-Doddridge-Harrison-Taylor-
442 AM EDT Fri Sep 7 2018

This Hazardous Weather Outlook is for much of the middle Ohio
Valley.

.DAY ONE...Today and Tonight.

While there is a low probability for widespread hazardous weather,
slow moving thunderstorms can produce isolated flash flooding,
mainly this afternoon and this evening. Hence, there is a marginal
risk for flash flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Isolated flash flooding from slow moving showers and thunderstorms
is possible again Saturday, mainly during the afternoons and
evenings. However, there is a slight risk for excessive rainfall
Saturday night, as the remnants of once tropical storm Gordon, and a
front, combine to bring potentially more widespread heavy rainfall.

There is a moderate risk for excessive rainfall Sunday through
Sunday night, and the heavy rainfall could continue into into Monday,
as the system only slowly pushes through.

A flash flood watch may be needed this weekend, if confidence for
heavy rainfall continues to increase.

.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-OHZ086-087-WVZ005>008-013>016-018-026>030-039-040-
515>526-080845-
Greenup-Carter-Boyd-Lawrence KY-Gallia-Lawrence OH-Wayne-Cabell-
Mason-Jackson WV-Lincoln-Putnam-Kanawha-Roane-Calhoun-Boone-Clay-
Braxton-Gilmer-Lewis-Upshur-Barbour-Northwest Raleigh-
Southeast Raleigh-Northwest Fayette-Southeast Fayette-
Northwest Nicholas-Southeast Nicholas-Northwest Webster-
Southeast Webster-Northwest Pocahontas-Southeast Pocahontas-
Northwest Randolph-Southeast Randolph-
442 AM EDT Fri Sep 7 2018

This Hazardous Weather Outlook is for northeast Kentucky, extreme
southeast Ohio, and much of West Virginia.

.DAY ONE...Today and Tonight.

While there is a low probability for widespread hazardous weather,
slow moving thunderstorms can produce isolated flash flooding,
mainly this afternoon and this evening. Hence, there is a marginal
risk for flash flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

While there is a low probability for widespread hazardous weather,
slow moving showers and thunderstorms can produce isolated flash
flooding this weekend, and even Monday. There is a marginal risk for
excessive rainfall Saturday, and then a slight risk for excessive
rainfall Sunday, when the remnants of once tropical storm Gordon add
to an already moist air mass.

.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-WVZ024-025-033-034-080845-
Dickenson-Buchanan-Mingo-Logan-McDowell-Wyoming-
442 AM EDT Fri Sep 7 2018

This Hazardous Weather Outlook is for southwest Virginia and
southern West Virginia.

.DAY ONE...Today and Tonight.

While there is a low probability for widespread hazardous weather,
slow moving thunderstorms can produce isolated flash flooding,
mainly this afternoon and this evening. Hence, there is a marginal
risk for flash flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

While there is a low probability for widespread hazardous weather,
slow moving showers and thunderstorms can produce isolated flash
flooding this weekend. There is a marginal risk for flash flooding,
overnight Saturday night, and again Sunday through Sunday night, when
the remnants of once tropical storm Gordon add to an already moist
air mass.

.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.

TRM

In the hours before

Local storm report, Sep 7, 10:12 PM EDT, 5 hours 22 minutes before
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Special weather statement, Sep 7, 10:23 PM EDT, 5 hours 11 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 8:02 PM EDTFlash Flood WarningRLXJackson, Mason93 min
Sep 8, 2:11 PM EDTSpecial Weather StatementRLXRoane34 min
Sep 8, 3:51 PM EDTSpecial Weather StatementRLXNicholas54 min
Sep 8, 5:16 PM EDTSpecial Weather StatementRLXFayette59 min
Sep 8, 5:57 PM EDTSevere Thunderstorm WarningRLXFayette, Kanawha38 min
Sep 7, 10:23 PM EDTSpecial Weather StatementRLXJackson52 min

Nearby

Flood Watches in West Virginia, 2018Flood Watches in Ohio, 2018Flood Watches in Kentucky, 2018Every flood watch in 2018

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.