Alert archive / West Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Charleston, WV

August 13, 2018Kanawha County, West Virginia

NWS Charleston, WV issued this special weather statement at Aug 13, 2018, 4:02 PM EDT for Kanawha County, West Virginia. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 13, 2018, 4:02 PM EDT (20:02 UTC)
Expired
Aug 13, 2018, 4:45 PM EDT
In force
43 min
Issued by
NWS Charleston, WV

County Kanawha County, WV

The radar

The Charleston,WV radar (KRLX), 19 km from the middle of the area, began a volume at 20:05 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 12:00Z, 8.0 hours before the alert went out and 224 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 12:00Z on 2018-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 122 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 12:00Z on 2018-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 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
122 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1108 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 13, 2:25 PM EDT, 1 hour 37 minutes earlier.

Area forecast discussion, Aug 13, 2:25 PM EDT, 1 hour 37 minutes before
Area Forecast Discussion
National Weather Service Charleston WV
225 PM EDT Mon Aug 13 2018

.SYNOPSIS...
A closed upper low begrudgingly shifts east Tuesday. Mid level
ridging occurs for mid week, followed by another trough and weak
cold front by late in the week.

&&

.NEAR TERM /THROUGH TUESDAY/...
As of 225 PM Monday...

Convection firing along a north/south line at this hour just
west of the I-79 corridor. Slow moving showers and storm are
justifying the marginal risk of excessive from WPC for today,
but so far, the coverage is manageable. Peak heating still to
come in the next few hours, so do expect an overall increase in
the activity, waning with sunset.

Will not eliminate the POPs going into the overnight, and
expanded the area around the entire CWA given the closed upper
low still influencing the region despite the eastward drift.
Should have enough elevated CAPE for any small impulse to kick
up the isolated shower or storm during this time frame.

The closed low continues to move east on Tuesday, with lingering
POPs over the northern tier of counties, but the available mid
level moisture that is the primary source for this activity will
be exiting into Pennsylvania.

Temperatures on the slow uptick for Tuesday with recovering
heights and brief ridging aloft.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
As of 302 AM Monday...

Aforementioned upper low will continue to slowly shift east on
Tuesday with drier northerly flow aloft prevailing across the
region. This should result in much lower precip chances existing
across the area, as compared to much of last week.

A brief period of mid level ridging is then prog to occur Wed
and possibly Thursday. Increase in height fields and associated
subsident airmass will lead to very warm to hot temps for Wed
and Thursday with a few locations possibly flirting with 90s
degrees for max temps. Precip chances will be minimal to nil for
these days, but an isolated shower/storm may develop if max
temps end up being warmer than currently forecast (and
convective temps are reached/exceeded).

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
As of 302 Monday...

Mid level ridging shifts east late this week followed by
another potent mid/upper level trough pushing east across the
Great Lakes and Ohio River Valley. This will lead to renewed
chances of showers and thunderstorms for late this week and the
upcoming weekend.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
As of 125 PM Monday...

Scattered convection will continue through the main
daylight/daytime heating hours. Using VCTS/CB with TEMPO thunder
at the most likely terminals to be affected directly by storms.
The upper level low pressure system will slowly drift to the
east, but will still leave the potential for isolated convection
through the night, but will not represent this at this time. Fog
in the river valleys will form where the sky cover clears enough
tonight, which may be difficult at the CKB location.

Expect lesser coverage of convection forming towards the back
end of the TAF on Tuesday.

FORECAST CONFIDENCE AND ALTERNATE SCENARIOS THROUGH 18Z TUESDAY...

FORECAST CONFIDENCE: Medium.

ALTERNATE SCENARIOS: Timing and location of convection could
vary. Fog formation timing could vary.

EXPERIMENTAL TABLE OF FLIGHT CATEGORY OBJECTIVELY SHOWS CONSISTENCY
OF WFO FORECAST TO AVAILABLE MODEL INFORMATION:
H = HIGH:   TAF CONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.
M = MEDIUM: TAF HAS VARYING LEVEL OF CONSISTENCY WITH MODELS.
L = LOW:    TAF INCONSISTENT WITH ALL MODELS OR ALL BUT ONE MODEL.

UTC 1HRLY       18   19   20   21   22   23   00   01   02   03   04   05
EDT 1HRLY       14   15   16   17   18   19   20   21   22   23   00   01
CRW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    M    H
HTS CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H
BKW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    M
EKN CONSISTENCY  H    H    H    H    H    H    H    H    H    M    H    H
PKB CONSISTENCY  M    H    H    H    H    H    H    H    H    H    H    M
CKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    H

AFTER 18Z TUESDAY...
IFR or worse in fog Tuesday morning. IFR possible in mainly
afternoon and evening thunderstorms throughout the week.

&&

.RLX WATCHES/WARNINGS/ADVISORIES...
WV...None.
OH...None.
KY...None.
VA...None.

&&

SYNOPSIS...26/RH
NEAR TERM...26
SHORT TERM...RH
LONG TERM...RH
AVIATION...26
Hazardous weather outlook, Aug 13, 4:38 AM EDT, 11 hours 24 minutes before
Hazardous Weather Outlook
National Weather Service Charleston WV
438 AM EDT Mon Aug 13 2018

KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011-
013>020-024>034-039-040-515>526-140845-
Greenup-Carter-Boyd-Lawrence KY-Perry-Morgan-Athens-Washington-
Jackson OH-Vinton-Meigs-Gallia-Lawrence OH-Dickenson-Buchanan-Wayne-
Cabell-Mason-Jackson WV-Wood-Pleasants-Tyler-Lincoln-Putnam-Kanawha-
Roane-Wirt-Calhoun-Ritchie-Doddridge-Mingo-Logan-Boone-Clay-Braxton-
Gilmer-Lewis-Harrison-Taylor-McDowell-Wyoming-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-
438 AM EDT Mon Aug 13 2018

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

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 13, 1:57 PM EDT, 2 hours 5 minutes before
Special Weather Statement
National Weather Service Charleston WV
157 PM EDT MON AUG 13 2018

WVZ017>019-029-131830-
Calhoun-Ritchie-Wirt-Gilmer-
157 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CALHOUN...SOUTHERN
RITCHIE...NORTHWESTERN GILMER AND NORTHEASTERN WIRT COUNTIES...

At 156 PM EDT, a strong thunderstorm was located 8 miles north of
Grantsville, moving south at 10 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Glenville, Grantsville, Newberne, Smithville, Big Springs, Berea,
Brohard, Tanner, Macfarlan, Burnt House and Munday.

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

LAT...LON 3913 8129 3918 8095 3893 8083 3888 8119
TIME...MOT...LOC 1756Z 338DEG 8KT 3904 8107

ABE
Special weather statement, Aug 13, 2:14 PM EDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Charleston WV
214 PM EDT MON AUG 13 2018

WVZ020-030-031-131845-
Doddridge-Harrison-Lewis-
214 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM WILL AFFECT DODDRIDGE...NORTHERN LEWIS AND
SOUTHWESTERN HARRISON COUNTIES...

At 214 PM EDT, a strong thunderstorm was located near Salem, or 12
miles northwest of Weston, moving southeast at 15 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Weston, Salem, West Union, Jackson Mill, West Milford, Jane Lew,
Camden, Blandville, Avon, Wolf Summit, New Milton, Smithburg, Alum
Bridge, Center Point and Sedalia.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 Interstate 79 near mile marker 95, and between mile markers 101 and
108.
 Route 50 in West Virginia between mile markers 50 and 72.

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

LAT...LON 3930 8085 3942 8057 3909 8031 3896 8061
TIME...MOT...LOC 1814Z 330DEG 12KT 3920 8059

ABE
Special weather statement, Aug 13, 2:28 PM EDT, 1 hour 34 minutes before
Special Weather Statement
National Weather Service Charleston WV
228 PM EDT MON AUG 13 2018

WVZ015-026-131915-
Boone-Kanawha-
228 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL KANAWHA AND NORTHERN
BOONE COUNTIES...

At 228 PM EDT, a strong thunderstorm was located near Julian, or 8
miles north of Madison, moving southeast at 10 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Charleston, Madison, South Charleston, Chesapeake, Marmet, Belle,
Cedar Grove, East Bank, Glasgow, Julian, Danville, Seth, Ashford,
Foster and Racine.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 West Virginia Turnpike between mile markers 82 and 92.
 Route 119 between mile markers 53 and 63, and between mile markers
71 and 75.

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

LAT...LON 3814 8188 3815 8188 3815 8189 3818 8187
      3818 8185 3820 8185 3823 8182 3822 8180
      3824 8181 3833 8172 3822 8140 3797 8172
TIME...MOT...LOC 1828Z 313DEG 11KT 3819 8178

ABE
Special weather statement, Aug 13, 2:38 PM EDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service Charleston WV
238 PM EDT MON AUG 13 2018

WVZ015-016-027-517-519-131930-
Clay-Roane-Kanawha-Northwest Nicholas-Northwest Fayette-
238 PM EDT MON AUG 13 2018

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL NICHOLAS...
NORTHEASTERN KANAWHA...SOUTH CENTRAL ROANE...SOUTHWESTERN CLAY AND
NORTHWESTERN FAYETTE COUNTIES...

At 238 PM EDT, a strong thunderstorm was located near Glen, or 11
miles southwest of Clay, moving southeast at 20 mph.

Winds in excess of 40 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Clay, Clendenin, Gauley Bridge, Glen, Amma, Bickmore, Procious,
Swiss, Indore, Bentree, Left Hand, Pond Gap and Drennan.

This includes Interstate 79 between mile markers 16 and 29.

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

LAT...LON 3854 8144 3862 8125 3831 8091 3815 8127
TIME...MOT...LOC 1838Z 331DEG 16KT 3835 8124

ABE
Special weather statement, Aug 13, 3:38 PM EDT, 24 minutes before
Special Weather Statement
National Weather Service Charleston WV
338 PM EDT MON AUG 13 2018

WVZ027-028-030-039-519-521-522-525-526-132030-
Southeast Webster-Clay-Northwest Randolph-Northwest Webster-Northwest
Nicholas-Upshur-Lewis-Braxton-Southeast Randolph-
338 PM EDT MON AUG 13 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WEST CENTRAL
RANDOLPH...NORTH CENTRAL NICHOLAS...SOUTHEASTERN LEWIS...BRAXTON...
SOUTHERN UPSHUR...NORTHERN WEBSTER AND NORTHEASTERN CLAY COUNTIES...

At 337 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Rock Cave to 9 miles east of Clay.
Movement was southeast at 10 mph.

Winds in excess of 40 mph and half inch hail are possible with these
storms.

Locations impacted include...
Summersville, Sutton, Gassaway, Addison (Webster Springs),
Camden-On-gauley, Birch River, Rock Cave, Holly River State,
Harrison, Cowen, Flatwoods, Alexander, Eden, Muddlety, Helvetia,
Pickens, Cleveland, Boggs, Little Birch and Hacker Valley.

This includes Interstate 79 between mile markers 47 and 75.

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

LAT...LON 3872 7999 3826 8080 3854 8105 3898 8043
TIME...MOT...LOC 1937Z 310DEG 10KT 3883 8034 3843 8092

KMC
Special weather statement, Aug 13, 4:02 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston WV
402 PM EDT MON AUG 13 2018

WVZ015-132045-
Kanawha-
402 PM EDT MON AUG 13 2018

...STRONG THUNDERSTORMS WITH HEAVY DOWNPOURS WILL AFFECT
NORTHEASTERN KANAWHA COUNTY...

At 400 PM EDT, an area of strong thunderstorm were located from near
Sissonville to  Elkview. The storms were moving to the southeast at
around 5 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Charleston, Sissonville, Pinch, Coal Fork and Elkview.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 Interstate 79 between mile markers 1 and 12.
 Interstate 77 in West Virginia between mile markers 96 and 98, and
between mile markers 102 and 114.
 West Virginia Turnpike between mile markers 94 and 95.

Torrential rainfall is occurring with these storms, and may cause
localized flooding. 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 in urban areas,
highways, streets and underpasses, as well as other poor drainage
areas and low lying spots.

LAT...LON 3849 8173 3857 8156 3830 8125 3827 8154
TIME...MOT...LOC 2000Z 154DEG 1KT 3844 8158

KMC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 8:46 PM EDTSpecial Weather StatementRLXRandolph44 min
Aug 12, 9:41 PM EDTSpecial Weather StatementRLXPocahontas49 min
Aug 13, 1:57 PM EDTSpecial Weather StatementRLXRitchie33 min
Aug 13, 2:14 PM EDTSpecial Weather StatementRLXDoddridge31 min
Aug 13, 2:28 PM EDTSpecial Weather StatementRLXBoone47 min
Aug 13, 2:38 PM EDTSpecial Weather StatementRLXClay52 min
Aug 13, 2:49 PM EDTSevere Thunderstorm WarningRLXCalhoun, Clay, Roane26 min
Aug 13, 3:38 PM EDTSpecial Weather StatementRLXBraxton, Nicholas, Webster52 min
Aug 13, 3:49 PM EDTSevere Thunderstorm WarningRLXBarbour, Taylor41 min
Aug 13, 4:23 PM EDTSpecial Weather StatementRLXJackson37 min
Aug 13, 4:56 PM EDTSpecial Weather StatementRLXKanawha34 min
Aug 13, 5:08 PM EDTSpecial Weather StatementRLXJackson37 min
Aug 13, 5:23 PM EDTSpecial Weather StatementRLXPleasants37 min
Aug 13, 5:34 PM EDTFlash Flood WarningRLXJackson87 min
Aug 13, 5:40 PM EDTSevere Thunderstorm WarningRLXPleasants50 min
Aug 13, 6:26 PM EDTSpecial Weather StatementRLXGilmer49 min

Nearby

Special Weather Statements in West Virginia, 2018Every special weather statement 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.