As the calendar was flipped from April to May, widespread showers occurred during the overnight hours.  The showers were heaviest in the southern coal field counties of West Virginia.  Rain amounts of 1.5 to 2.25 inches occurred by 0800E.  This caused minor flash flooding in a few vulnerable locations.
In the afternoon heating, with temperatures in the mid and upper 70s and dew points in the lower 60s, instability increased. New convection formed after 1400E in northern Kentucky and moved east into West Virginia for the evening hours. Large hail and downpours occurred.  The duration of the downpours was limited. As a result, the additional rain amounts were mostly less than 0.75 inches.  Yet, minor flash flooding occurred in a few of the wettest locations.  The usual ponding of water on streets was more common.
After a lull during the late night through the morning hours of the 2nd, new convection formed in Kentucky and southern West Virginia after 1300E.  A mid level disturbance was approaching from the Tennessee Valley, while a front was along the lower Ohio River into southeast Ohio.  This left southern counties of West Virginia in the unstable air.  Yet, temperatures only warmed to the mid and upper 70s prior to the convection.
Large hail fell in extreme southern West Virginia, mostly in McDowell County.  Rain amounts of 0.50 to 0.75 inches fell in 2 hours over wet steep terrain.  This caused only isolated minor flash flooding in Mingo and Mcdowell Counties during the evening of the 2nd.

Hail in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:12:00 to 02-MAY-16 15:12:00 (EST-5)
Location: PREMIER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in BOONE, WEST VIRGINIA
From 01-MAY-16 18:05:00 to 01-MAY-16 18:05:00 (EST-5)
Location: BRUSHTON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Trees fell onto roads.

Hail in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:00:00 to 02-MAY-16 15:00:00 (EST-5)
Location: GARLAND
Magnitude: 1.10 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

The largest hail was slightly larger than the size of a quarter.

Hail in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:10:00 to 02-MAY-16 15:10:00 (EST-5)
Location: AVONDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in BOONE, WEST VIRGINIA
From 01-MAY-16 05:47:00 to 01-MAY-16 07:00:00 (EST-5)
Location: NORTH FORK
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six Mile Creek overflowed and flooded 6 Mile Road.

Hail in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:32:00 to 02-MAY-16 15:32:00 (EST-5)
Location: KIMBALL
Magnitude: 2.00 
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The largest hail was bigger than a golf ball.

Hail in WYOMING, WEST VIRGINIA
From 02-MAY-16 15:40:00 to 02-MAY-16 15:40:00 (EST-5)
Location: HERNDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in LINCOLN, WEST VIRGINIA
From 01-MAY-16 07:20:00 to 01-MAY-16 09:15:00 (EST-5)
Location: FRY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Straight Fork flooded and closed Route 3 around Griffithsville.  A 70 year old man was rescued from the flood waters, after trying to drive across a flooded bridge. He was not injured and was warmed up in an ambulance.   In addition, streams around Harts also flooded roads. This included Piney Fork near the county line.

Hail in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:29:00 to 02-MAY-16 15:29:00 (EST-5)
Location: CAPELS
Magnitude: 1.75 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Quarter to golf ball size hail fell.

Hail in WYOMING, WEST VIRGINIA
From 02-MAY-16 15:42:00 to 02-MAY-16 15:42:00 (EST-5)
Location: HERNDON HGTS
Magnitude: 2.00 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Large hail fell at the Wagon Wheel ATV Park.

Flash Flood in LOGAN, WEST VIRGINIA
From 01-MAY-16 05:50:00 to 01-MAY-16 08:00:00 (EST-5)
Location: BANCO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Streams in the western portion of the county, such as Garretts Fork, Browns Run, and Crawley Creek overflowed and blocked roads.  Water surrounded a few homes and outbuildings.

Flash Flood in LOGAN, WEST VIRGINIA
From 01-MAY-16 08:35:00 to 01-MAY-16 10:00:00 (EST-5)
Location: BANCO
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Stone Branch flooded Stone Branch Road.

Hail in POCAHONTAS, WEST VIRGINIA
From 02-MAY-16 17:07:00 to 02-MAY-16 17:07:00 (EST-5)
Location: MINNEHAHA SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail the size of quarters fell along Route 39.

Flash Flood in MINGO, WEST VIRGINIA
From 02-MAY-16 17:00:00 to 02-MAY-16 18:45:00 (EST-5)
Location: WHARNCLIFFE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Streams between Wharncliffe and Gilbert flooded roads.  One example was Bens Creek.

Flash Flood in MINGO, WEST VIRGINIA
From 01-MAY-16 07:15:00 to 01-MAY-16 08:15:00 (EST-5)
Location: SELWYN
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Right Fork of Marrowbone Creek flooded.  Water got under a few mobile homes.  A water rescue was performed by the county.  A small private bridge over a driveway was damaged.

Hail in WAYNE, WEST VIRGINIA
From 01-MAY-16 17:02:00 to 01-MAY-16 17:02:00 (EST-5)
Location: ELMWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flash Flood in MCDOWELL, WEST VIRGINIA
From 02-MAY-16 15:30:00 to 02-MAY-16 17:30:00 (EST-5)
Location: AVONDALE
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Small streams and runs feeding into the Dry Fork near Avondale flooded.  Streams in the Panther Wildlife Area also overflowed.  Several small mud slides also occurred in this vicinity.

Hail in MASON, WEST VIRGINIA
From 01-MAY-16 16:45:00 to 01-MAY-16 16:45:00 (EST-5)
Location: ELLEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MINGO, WEST VIRGINIA
From 01-MAY-16 16:44:00 to 01-MAY-16 16:44:00 (EST-5)
Location: WILLIAMSON ARPT
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

A few vehicles were dented.

Hail in BOONE, WEST VIRGINIA
From 01-MAY-16 17:07:00 to 01-MAY-16 17:07:00 (EST-5)
Location: SETH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in FAYETTE, WEST VIRGINIA
From 01-MAY-16 18:05:00 to 01-MAY-16 18:05:00 (EST-5)
Location: OAK HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FAYETTE, WEST VIRGINIA
From 01-MAY-16 18:30:00 to 01-MAY-16 18:30:00 (EST-5)
Location: DANESE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LOGAN, WEST VIRGINIA
From 01-MAY-16 18:25:00 to 01-MAY-16 18:25:00 (EST-5)
Location: VERDUNVILLE
Magnitude: 2.00 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WYOMING, WEST VIRGINIA
From 01-MAY-16 18:20:00 to 01-MAY-16 18:20:00 (EST-5)
Location: MULLENS
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WYOMING, WEST VIRGINIA
From 01-MAY-16 18:10:00 to 01-MAY-16 18:10:00 (EST-5)
Location: JESSE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MCDOWELL, WEST VIRGINIA
From 01-MAY-16 19:07:00 to 01-MAY-16 19:07:00 (EST-5)
Location: BEARTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LINCOLN, WEST VIRGINIA
From 01-MAY-16 16:20:00 to 01-MAY-16 16:20:00 (EST-5)
Location: HARTS
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm Wind in WYOMING, WEST VIRGINIA
From 01-MAY-16 16:25:00 to 01-MAY-16 16:25:00 (EST-5)
Location: MULLENS
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A few trees were blown down.

Hail in LINCOLN, WEST VIRGINIA
From 01-MAY-16 17:41:00 to 01-MAY-16 17:41:00 (EST-5)
Location: ALKOL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm Wind in BOONE, WEST VIRGINIA
From 01-MAY-16 17:50:00 to 01-MAY-16 17:50:00 (EST-5)
Location: JULIAN
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down near Julian.

Hail in LOGAN, WEST VIRGINIA
From 01-MAY-16 18:20:00 to 01-MAY-16 18:20:00 (EST-5)
Location: VERDUNVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Funnel Cloud in RALEIGH, WEST VIRGINIA
From 01-MAY-16 18:38:00 to 01-MAY-16 18:38:00 (EST-5)
Location: ODD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Flash Flood in LINCOLN, WEST VIRGINIA
From 01-MAY-16 18:45:00 to 01-MAY-16 19:45:00 (EST-5)
Location: SOD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Streams overflowed and blocked roads.  A washout occurred and closed McCorkle Road or Route 14/3.  It occurred near the mouth of Spring Branch with Grassy Fork.

Flash Flood in LOGAN, WEST VIRGINIA
From 01-MAY-16 20:00:00 to 01-MAY-16 21:00:00 (EST-5)
Location: SWITZER
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

The smaller feeder streams into Island Creek, such as Steele Branch, rose rapidly, overflowed, and flooded roads.

Thunderstorm Wind in BOONE, WEST VIRGINIA
From 01-MAY-16 18:02:00 to 01-MAY-16 18:02:00 (EST-5)
Location: BRUSHTON
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees were blown down.

Hail in MINGO, WEST VIRGINIA
From 02-MAY-16 13:44:00 to 02-MAY-16 13:44:00 (EST-5)
Location: NELCO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Hail the size of quarters fell.

Thunderstorm Wind in WAYNE, WEST VIRGINIA
From 01-MAY-16 15:39:00 to 01-MAY-16 15:39:00 (EST-5)
Location: DUNLOW
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Department of Highways

A few trees were blown down.  One tree fell across the road.