A warm front lifted north, through West Virginia, during the day on Wednesday.  Heating and instability increased greatly during the afternoon of the 12th.  Dew points reached into the lower 70s across the lowlands.  Disturbances in the mid and upper levels rippled southeast from the lower Great Lakes initially.  Additional disturbances then moved east overnight into Thursday the 13th.
The first round of showers and thunderstorms formed across in northern Ohio during the early evening of the 12th, then raced southeast into northern West Virginia as the new calendar day began.
Those initial cells did become repetitive in a few spots, such as northern Taylor County north of Grafton.  This did not cause any serious flooding, but helped saturate the ground.
Meanwhile, another larger cluster of showers and thunderstorms moved out of northern Indiana, through Ohio, reaching into West Virginia during the predawn hours.  The southern edge of this complex became oriented west to east, along the fast flow aloft.  As a result, repetitive cells did dump heavy rain from Jackson County through southern Roane, southern Calhoun, southern Gilmer, Braxton, and Webster Counties.  Rain amounts over 2 inches were common in that west to east band.  The most serious of the flooding occurred in Roane County.   By late July, this led to a Presidential disaster declaration.  See FEMA DR-4132 for more details.
A break in the rain occurred during the mid to late morning hours on the 13th.  A few smaller showers and thunderstorms did form over north central West Virginia during this time frame.  The final round of strong to severe showers and thunderstorms streaked east at 50 mph, out of Ohio, reaching West Virginia after 1000E on the 13th.   This final round was also associated with the surface cold front.  Wind gusts of 40 to 45 mph were common.  Yet, the leading edge did become stronger as it headed into southeastern counties of West Virginia.

Flash Flood in GILMER, WEST VIRGINIA
From 13-JUN-13 09:00:00 to 13-JUN-13 14:30:00 (EST-5)
Location: STUMPTOWN
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Creeks in the southern portion of the county flooded roads.  One specific example was Laurel Run washing out a portion of County Route 26/3.  Laurel Run is a feeder stream into the Right Fork of Steer Creek.

Thunderstorm Wind in HARRISON, WEST VIRGINIA
From 12-JUN-13 22:19:00 to 12-JUN-13 22:19:00 (EST-5)
Location: INDUSTRIAL
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down along Patterson Fork Road.

Flash Flood in TAYLOR, WEST VIRGINIA
From 13-JUN-13 12:45:00 to 13-JUN-13 15:00:00 (EST-5)
Location: MC GEE
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The final round of showers and thunderstorms during the midday, finally caused small streams and creeks to flood.  Streams like Wickwire Run, Plum Run, and Whiteday Creek flooded. Roads were flooded but no dwellings were damaged.
On the county border with Marion, Valley Falls State Park measured 3.1 inches of rain for a storm total during a 12 to 15 hour period.  The automatic gauge near Laurel Run measured 2.87 inches in the same time span.

Flash Flood in WEBSTER, WEST VIRGINIA
From 13-JUN-13 10:30:00 to 13-JUN-13 15:00:00 (EST-5)
Location: CAMDEN ON GAULEY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Creeks and runs overflowed onto roads.  Coon Creek Road near Camden on Gauley was closed.  No dwellings were damaged.

Thunderstorm Wind in UPSHUR, WEST VIRGINIA
From 13-JUN-13 11:35:00 to 13-JUN-13 11:35:00 (EST-5)
Location: BUCKHANNON LEWIS ARP
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A gust to 62 mph was measured.

Thunderstorm Wind in HARRISON, WEST VIRGINIA
From 12-JUN-13 23:15:00 to 12-JUN-13 23:15:00 (EST-5)
Location: BRIDGEPORT
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A few trees were blown down on Circle Drive.

Hail in HARRISON, WEST VIRGINIA
From 12-JUN-13 23:10:00 to 12-JUN-13 23:10:00 (EST-5)
Location: WALLACE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy Rain in MASON, WEST VIRGINIA
From 13-JUN-13 05:00:00 to 13-JUN-13 13:30:00 (EST-5)
Location: MAGGIE
Property damage: 400.00K
Crop damage: 0.00K
Reported by: Department of Highways

A small 25 to 30 foot bridge over Potter Creek along County Route 12 was damaged.  The section of the bridge that was damaged was built in 1950.
The heavy rains on the 13th and the swollen waters of Potter Creek caused the road surface over the bridge to sag on the 14th.  The road was closed during the evening of the 14th.
The stream did not flood over the bridge.  According to highway engineers the water level rose to about two-thirds the way up the abutments.  The water scoured, or undercut, the foundations of the abutments.  The whole bridge was scheduled to be replaced.

Thunderstorm Wind in MCDOWELL, WEST VIRGINIA
From 13-JUN-13 12:54:00 to 13-JUN-13 12:54:00 (EST-5)
Location: BERWIND
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were blown down.

Flash Flood in CALHOUN, WEST VIRGINIA
From 13-JUN-13 08:45:00 to 13-JUN-13 14:30:00 (EST-5)
Location: LEATHERBARK
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

The headwater feeder streams and runs into the headwaters of the West Fork of the Little Kanawha flooded roads.  The West Fork of the Little Kanawha did spill out onto Route 16 but did not cause any serious flooding.  Further down the river, the gauge at Rocksdale responded by rising from 5 to over 22 feet.   No flooding to dwellings was reported.

Thunderstorm Wind in BARBOUR, WEST VIRGINIA
From 13-JUN-13 11:20:00 to 13-JUN-13 11:20:00 (EST-5)
Location: BELINGTON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down.

Thunderstorm Wind in KANAWHA, WEST VIRGINIA
From 13-JUN-13 11:10:00 to 13-JUN-13 11:20:00 (EST-5)
Location: INSTITUTE
Magnitude: 43.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Employee

Estimated wind gusts of 45 to 50 mph caused a few tree limbs and trees to fall.  The gust lasted about 3 minutes.

Thunderstorm Wind in NICHOLAS, WEST VIRGINIA
From 13-JUN-13 12:12:00 to 13-JUN-13 12:12:00 (EST-5)
Location: CARL
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Route 20 was closed while the fallen large tree branches were cleared.

Thunderstorm Wind in KANAWHA, WEST VIRGINIA
From 13-JUN-13 12:25:00 to 13-JUN-13 12:25:00 (EST-5)
Location: COAL FORK
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were blown down in Campbell Creek and Georges Creek Hollows.

Thunderstorm Wind in WIRT, WEST VIRGINIA
From 13-JUN-13 10:23:00 to 13-JUN-13 10:30:00 (EST-5)
Location: ELIZABETH
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A downburst was associated with a developing bow echo configuration of showers and thunderstorms.  A narrow path of damage started just down the Little Kanawha River from Elizabeth and ended near a cemetery.   The maximum width of damage was about 400 yards.
Numerous trees were uprooted or snapped.  Two houses were damaged by fallen trees.  A porch has its roof flipped onto the attached house.   A metal shed, not anchored to the ground, was destroyed.  The shed was blown about 70 yards.

Thunderstorm Wind in JACKSON, WEST VIRGINIA
From 13-JUN-13 04:40:00 to 13-JUN-13 04:40:00 (EST-5)
Location: LE ROY
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown down onto roads.

Thunderstorm Wind in LEWIS, WEST VIRGINIA
From 13-JUN-13 11:20:00 to 13-JUN-13 11:20:00 (EST-5)
Location: WESTON BENNETT ARPT
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A portion of a roof to a mobile home on Geelick Road was peeled off.

Thunderstorm Wind in UPSHUR, WEST VIRGINIA
From 13-JUN-13 11:35:00 to 13-JUN-13 11:35:00 (EST-5)
Location: FRENCH CREEK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A gust to 60 mph was reported.

Thunderstorm Wind in JACKSON, WEST VIRGINIA
From 13-JUN-13 05:06:00 to 13-JUN-13 05:06:00 (EST-5)
Location: MEADOWDALE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown down onto roads.

Hail in JACKSON, WEST VIRGINIA
From 13-JUN-13 05:15:00 to 13-JUN-13 05:15:00 (EST-5)
Location: RAVENSWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail fell along Washington Street along with gusty winds.

Flash Flood in HARRISON, WEST VIRGINIA
From 13-JUN-13 12:05:00 to 13-JUN-13 15:00:00 (EST-5)
Location: MC WHORTER
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Creeks in the southern part of the county flooded including Lost Creek and Isaacs Creek.   Water was reported in 1 home in Lost Creek.

Flash Flood in BRAXTON, WEST VIRGINIA
From 13-JUN-13 09:30:00 to 13-JUN-13 14:00:00 (EST-5)
Location: ROSEDALE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Department of Highways

Creeks and runs flooded roads and damaged culverts.   One such road was Mill Fork Road.  Joes Fork flooded near Dessie.  One gauge near Dingy measured 2.24 inches of rain in 6 hours.  An automatic gauge near Frametown measured 1.68 inches in an hour between 0600 and 0700E.

Thunderstorm Wind in LEWIS, WEST VIRGINIA
From 13-JUN-13 11:17:00 to 13-JUN-13 11:17:00 (EST-5)
Location: BEN DALE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down along Route 19.

Flash Flood in ROANE, WEST VIRGINIA
From 13-JUN-13 08:15:00 to 13-JUN-13 14:00:00 (EST-5)
Location: PENIEL
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: Emergency Manager

A downpour occurred between 0500 and 0700E, followed by a lull, with a final downpour around 1045E to 1115E.
The heaviest band was oriented west to east along the Route 33 corridor on south to the headwaters of the Pocatalico River.  The heaviest rain was on the order of 1.5 to near 2 inches in an hour shortly after dawn.   Near Looneyville, the heaviest measured rate was 1.8 inches between 0545 and 0645E.  Spencer had 1.4 inches between 0500 and 0600E with near 2 inches by 0700E.  All total, the measured amounts including the final midday downpour was 2.8 inches at the National Weather Service cooperative observer in Spencer and the automatic gauge near Spencer.  The gauge at Looneyville had 2.5 inches.  However, total storm amounts over 3 inches were possible between Spencer and Looneyville.
The Spring Creek basin, including Tanner Fork, flooded the county seat of Spencer.  The usual low spots like along Front Street and Church Street were flooded. The low income apartment complex for senior citizens flooded.  Water was over 1 foot deep on the first floor of several of those apartments.  The Route 119 corridor near Walmart flooded.  The creek did not cross over the top of Route 119, but backwater from feeder runs and urban drainage collected in the residential area on the west side. This included the Reynolds and Bell Streets vicinity.  Homes in the Alvord section of town, that usually do not see water, had water.  Blocked culverts in front of the 911 Center contributed to the evacuation of the 911 Center including the office of emergency services.    Water also flooded the ambulance authority building.  The local feed and garden store was flooded.  Water surrounded a pharmacy store.  Several water rescues were performed.
Further south, the lowlands around Walton were flooded by the Pocatalico River, including along River Road.  Water got into the Walton Post Office.  The local middle school had runoff enter the building from the adjacent hillsides.
About 40 people were displaced by the flooding.  A Red Cross shelter was set up in the local armory.  Around 7 people stayed there overnight.
Governor Tomblin declared a state of emergency for Roane County.  National Guard troops were placed on active duty to help do wellness checks and ship supplies.
State individual damage assessment counted 1 manufactured home destroyed.  In terms of single family homes, none were destroyed, 47 had major damage, with another 41 with minor damage.  One multifamily dwelling had major damage, with 14 others sustaining minor damage.

Thunderstorm Wind in FAYETTE, WEST VIRGINIA
From 13-JUN-13 12:27:00 to 13-JUN-13 12:27:00 (EST-5)
Location: DUBREE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down along Route 60.

Thunderstorm Wind in LEWIS, WEST VIRGINIA
From 13-JUN-13 11:20:00 to 13-JUN-13 11:20:00 (EST-5)
Location: JACKSON MILL
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several trees were blown down along Jackson Mill Road.