Flash Flood Warning 57, NWS Charleston, WV

Area Forecast Discussion
National Weather Service Charleston WV
236 PM EDT MON AUG 15 2016

.SYNOPSIS...
Cold front nearly stationary across Western Ohio, as high
pressure lingers off East Coast. The cold front moves through
Wednesday, followed by another over the weekend.

&&

.NEAR TERM /THROUGH TUESDAY/...
As of 235 PM Monday...

Still looks like an increase in coverage of shra/tsra this afternoon
and evening as vort max tracks out of the S Appalachians and thru
the area. Some of the storms could be on the strong side given the
increase in flow aloft with a hint of low level shear. Damaging
winds would be the primary hazard. Have continued with likely pops
later this afternoon and evening to track this disturbance thru the
area. Given the high PWATS...downpours could produce localized flash
flooding but not enough coverage concerns for a flash flood watch
attm. The most vulnerable areas remain across SE OH and N WV where
1 hr guidance is lowest.

The aforementioned vort max will shift N out of the area by 03z with
clearing overnight. Patchy dense river valley fog is possible over
any locales that receive rain...however...low level flow will
picking up quite a bit to perhaps confine it to the most sheltered
valleys and hollows.

Tuesday will feature a broad strengthening SW flow ahead of the
approaching cold front. As such shra/tsra will be with us
again...most notably across SE OH...close to the better forcing. It
will be a gusty afternoon so despite temps in the low 90s...at least
a breeze will be felt.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
As of 235 pm Monday.

A weak cold front crosses Tuesday night, with a good chance for
showers and thunderstorms. A weak upper level short wave trough
trailing behind the one that initially pushes the front through
Tuesday night, crosses Wednesday, keeping the shower/thunderstorm
going.

The shower/thunderstorm chance decreases Wednesday night as the
trailing short wave passes on to the east, with a slight chance
through Thursday mainly on heating and moisture content still
high, before a dry Thursday night ensues per weak surface high
pressure building in.

Temperatures and dew points close to previous package and latest
guidance, bias corrected at night, with just about a 2C
temperature difference in the low levels behind the front.

&&

.LONG TERM /FRIDAY THROUGH SUNDAY/...
As of 235 pm Monday...

Showers and thunderstorms Friday into Saturday will be mainly
diurnally driven, with high pressure exiting to the east, and
upper level light flow/ridging Friday.

Models remain in good agreement on a stronger upper level short
wave trough pushing a stronger cold front through the area Sunday.
This may keep the shower/thunderstorm chance going Saturday
night, with either the approach of the front and / or a wave ahead
of it. Maintained likely pops from previous package for Sunday,
followed by a trend toward drier and somewhat cooler weather early
next week.

Temperatures close to previous package and latest central guidance
and model guidance blends. Very warm weather early on gives way
to cooler weather later in the period, with highs Sunday tempered
by clouds and precipitation, and on Monday in the actual cooler
air. Looking at a comfortably cool night for sleeping at last Monday
night, day night.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
As of 235 PM Monday...

Scattered convection this afternoon and evening will result in IFR
or worse vsby at times for any terminal that gets hit. Inserted a
few hrs IFR tempo groups for KHTS/KCRW/KBKW centered on 21 to 22Z
where confidence was highest as approaching upper levels system from
the S results in a greater coverage of convection. Elsewhere...have
VCTS for the remainder of the afternoon.

Aforementioned system moves to the N this evening with some clearing
tonight. Low level flow increases out of the SW 20 to 25 kts which
will tend to mitigate dense river valley fog...even for terminals
that receive rain. Did put some MVFR in overnight with best chance
for IFR or worse fog at KEKN.

Broad moderate SW flow on Tuesday will result in gusty winds around
20 kts in the afternoon with a cold front approaching SE OH.

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

FORECAST CONFIDENCE...Medium

ALTERNATE SCENARIOS: Showers and storms this afternoon and evening could
cause brief IFR conditions if they go over any airfields.

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       15   16   17   18   19   20   21   22   23   00   01   02
EDT 1HRLY       11   12   13   14   15   16   17   18   19   20   21   22
CRW CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L
HTS CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L
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    H    H    L
PKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L
CKB CONSISTENCY  H    H    H    H    H    H    H    H    H    H    H    L

AFTER 18Z TUESDAY...
Brief IFR conditions in sct showers and thunderstorms through
Wednesday.

&&

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

&&

SYNOPSIS...TRM/30
NEAR TERM...30
SHORT TERM...TRM
LONG TERM...TRM
AVIATION...30

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON WV
351 AM EDT MON AUG 15 2016

KYZ101>103-105-OHZ066-067-075-076-083>087-VAZ003-004-WVZ005>011-
013>020-024>040-046-047-160800-
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-RALEIGH-FAYETTE-
NICHOLAS-WEBSTER-UPSHUR-BARBOUR-POCAHONTAS-RANDOLPH-
351 AM EDT MON AUG 15 2016

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.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

KISTNER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
202 PM EDT MON AUG 15 2016

WVZ031-032-151900-
TAYLOR-HARRISON-
202 PM EDT MON AUG 15 2016

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL HARRISON AND WESTERN
TAYLOR COUNTIES...

AT 201 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR
LUMBERPORT...OR NEAR CLARKSBURG...MOVING NORTHEAST AT 20 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS STORM. TORRENTIAL
RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE LOCALIZED
FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

LOCATIONS IMPACTED INCLUDE...
CLARKSBURG...GRAFTON...BRIDGEPORT...SHINNSTON...STONEWOOD...
NUTTER FORT...LUMBERPORT...ANMOORE...ENTERPRISE...FLEMINGTON...
VALLEY FALLS...DESPARD...WOLF SUMMIT...MCGEE...
TYGART LAKE STATE PARK...MEADOWBROOK...ROSEMONT AND MEADLAND.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 79 BETWEEN MILE MARKERS 116 AND 128.
 ROUTE 50 IN WEST VIRGINIA BETWEEN MILE MARKERS 68 AND 82.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3943 8028 3939 8020 3941 8011 3939 8009
      3939 8007 3928 7999 3921 8039 3926 8053
      3937 8052 3945 8039
TIME...MOT...LOC 1801Z 244DEG 18KT 3933 8036

COOPER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
540 PM EDT MON AUG 15 2016

KYZ105-WVZ005-013-024>026-152230-
LAWRENCE-BOONE-LOGAN-MINGO-WAYNE-LINCOLN-
540 PM EDT MON AUG 15 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
LAWRENCE...CENTRAL MINGO...WAYNE...SOUTHWESTERN BOONE...SOUTHWESTERN
LINCOLN AND LOGAN COUNTIES...

AT 539 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR TOMAHAWK TO HODE TO NEAR MOUNT
GAY-SHAMROCK TO NEAR MAN. MOVEMENT WAS NORTH AT 30 MPH.

WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MADISON...LOUISA...LOGAN...CHAPMANVILLE...MAN...FORT GAY...HOLDEN...
ULYSSES...KIAHSVILLE...RANGER...MOUNT GAY-SHAMROCK...CHARLEY...
GILL...EAST LYNN LAKE...CHIEF LOGAN STATE...SPURLOCKVILLE...HARTS...
DUNLOW...VAN AND HODE.

THIS INCLUDES ROUTE 119 BETWEEN MILE MARKERS 13 AND 50.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3817 8267 3821 8229 3817 8204 3799 8169
      3762 8190 3778 8221 3780 8237 3782 8238
      3781 8240 3788 8242 3791 8247 3790 8247
      3792 8248 3793 8250 3794 8249 3795 8250
      3796 8253 3795 8258 3788 8261 3791 8272
TIME...MOT...LOC 2139Z 198DEG 28KT 3785 8264 3787 8240 3784 8219 3772
8196

23

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON WV
555 PM EDT MON AUG 15 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0240 PM     FLASH FLOOD      3 NW PRUNTYTOWN         39.36N  80.11W
08/15/2016                   TAYLOR             WV   911 CALL CENTER

            TREES REPORTED DOWN ALONG US 250. TIME ESTIMATED FROM
            RADAR.

&&

EVENT NUMBER RLX1601290

MAC

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHARLESTON WV
556 PM EDT MON AUG 15 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0240 PM     TSTM WND DMG     3 NW PRUNTYTOWN         39.36N  80.11W
08/15/2016                   TAYLOR             WV   911 CALL CENTER

            TREES REPORTED DOWN ALONG US 250. TIME ESTIMATED FROM
            RADAR.

&&

CORRECTED EVENT

EVENT NUMBER RLX1601290

MAC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON WV
559 PM EDT MON AUG 15 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0523 PM     TSTM WND DMG     WILLIAMSON              37.67N  82.27W
08/15/2016                   MINGO              WV   EMERGENCY MNGR

            ONE TREE DOWN IN WILILAMSON.

&&

EVENT NUMBER RLX1601291

MAC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON WV
635 PM EDT MON AUG 15 2016

WVZ015-016-152330-
KANAWHA-ROANE-
635 PM EDT MON AUG 15 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN ROANE AND
NORTHEASTERN KANAWHA COUNTIES...

AT 633 PM EDT...STRONG THUNDERSTORMS WERE CLUSTERED OVER PORTIONS OF
NORTHEASTERN KANAWHA AND SOUTHEASTERN ROANE COUNTIES AND WERE MOVING
NORTHEAST.

LOCATIONS IMPACTED INCLUDE...
CLENDENIN...AMMA...LEFT HAND AND TARIFF.

THIS INCLUDES INTERSTATE 79 BETWEEN MILE MARKERS 15 AND 32.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...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 3845 8138 3850 8143 3866 8119 3859 8112
TIME...MOT...LOC 2233Z 237DEG 5KT 3851 8135

23