The synoptic pattern remained little changed from the previous day with deep moisture in place. An axis of very heavy rainfall pushed north across the Carolinas in the late afternoon and evening as the weak area of low pressure over the southeast lifted slowly northward. Slow-moving storms with highly efficient rainfall affected number of areas in the mountains and foothills of northern North Carolina. Rainfall amount were generally 2 to 4 inches over a several hour period with isolated higher amounts.

Flash Flood in STOKES, NORTH CAROLINA
From 18-MAY-18 14:21:00 to 18-MAY-18 17:21:00 (EST-5)
Location: KING
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads across southwest Stokes County, mainly in the King area were closed or washed out due to flooding. This included Route 52, Brown Road, Briarcreek Road, Chestnut Grove Road, Goff Road and Priddy Road. Damage to a pipe under Briarcreek Road required a replacement. At least two bridges were overtopped but bridge damage was minimal.

Heavy Rain in WATAUGA, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: BOONE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The Boone 1 SE COOP (BOON7) observer recorded 3.40 inches for the 24-hours ending at 700 AM EST on the 19th. This is the 2nd highest daily May rainfall since records began at this station in 1980 and the 4th highest May rainfall all-time at Boone (since 1929) if the previous COOP station is considered.

Flash Flood in SURRY, NORTH CAROLINA
From 18-MAY-18 15:15:00 to 18-MAY-18 18:15:00 (EST-5)
Location: TOAST
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several roads were flooded in the Mount Airy area including Aims Avenue, Bluemont Road, Hogan Creek Road, Snowhill Drive, Old Toast Road and Quaker Road. Trees were reported down mainly due to the saturated soils. One home had water inside the house from the flooding.

Heavy Rain in SURRY, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: MT AIRY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Mt. Airy 2W (MTAN7) recorded 3.50 inches for the 24 hour period ending 700 AM EST on the 19th. This is the highest daily May rainfall at this long-term station, with data back to 1893. The previous May record was 3.02 inches set May 15, 2012.

Heavy Rain in WATAUGA, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: FOSCOE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The observer at Foscoe 1.2 WSW (NC-WT-11) reported rainfall of 7.71 inches for the 24-hour period ending 600 AM EST. Most of the rain fell from 135 PM on the 18th. Flooding reported around the area. This is roughly a  0.04 annual chance rain event for a 24-hour period or a 25-year recurrence interval in this area per NOAA Atlas 14, although the duration of the rainfall was well below the full 24 hours.

Heavy Rain in WATAUGA, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: FOSCOE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The observer at Seven Devils 1.4 ENE (NC-WT-46) reported 6.46 inches for the 24-hour period ending 600 AM EST. This is roughly a  0.1 annual chance rain event for a 24-hour period or a 10-year recurrence interval in this area per NOAA Atlas 14.

Heavy Rain in STOKES, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: KING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at King (KIGN7) recorded 2.70 inches for the 24 hour period ending 700 AM EST on the 19th. This is the highest daily May rainfall at this station, with data back to 1999. The previous May record was 2.17 inches set May 9, 2012.

Heavy Rain in SURRY, NORTH CAROLINA
From 18-MAY-18 07:00:00 to 19-MAY-18 07:00:00 (EST-5)
Location: ELKIN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Elkin (EKNN7) recorded 3.00 inches for the 24 hour period ending 700 AM EST on the 19th. This is the 4th highest daily May rainfall at this station, with continuous data back to 1934.

Flood in ROCKINGHAM, NORTH CAROLINA
From 18-MAY-18 19:15:00 to 19-MAY-18 02:15:00 (EST-5)
Location: SPRAY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Smith River at Eden (EDSN7) crested at 12.55 feet late on the 18th in response to the heavy rains upstream. Minor flood stage is 11 feet. Flooding was confined to lowland areas. This was the highest reading at this gauge since January 25, 2010.

Flash Flood in WATAUGA, NORTH CAROLINA
From 18-MAY-18 19:36:00 to 18-MAY-18 22:36:00 (EST-5)
Location: LOVILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Linville Creek was flooding the bridge at Linville Creek Road.

Flash Flood in WATAUGA, NORTH CAROLINA
From 18-MAY-18 17:08:00 to 18-MAY-18 23:08:00 (EST-5)
Location: BOWERS GAP
Flood cause: Heavy Rain
Property damage: 1.25M
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flooding was reported across southern Watauga County. The Boone Fire Department said a woman driving on a flooded section of Bamboo Road got her SUV swept up by the flood waters. Rescue crews quickly got her to safety with no serious injuries. One foot of water was estimated to be flowing down Seven Devils Road onto Route 105 near Foscoe.  Linville Creek was reported to have flooded over the bridge at Linville Creek Road. The Watauga River at Sugar Grove (SGWN7) crested at 16.15 feet, the highest stage since September, 2004. Several debris flows were reported across the area, blocking roads. Overall damage to road infrastructure was around $1 million.

Flash Flood in STOKES, NORTH CAROLINA
From 18-MAY-18 15:10:00 to 18-MAY-18 18:10:00 (EST-5)
Location: KING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Danbury Creek flooded over Brown Road, closing the road.