Slow moving showers and thunderstorms associated with a broad area of low pressure moved across western Maine through the night of June 25th and into the morning of June 26th. Showers and thunderstorms repeatedly developed over the hills and mountains surrounding Andover and Byron in Oxford County, The extreme rainfall rates in hilly and mountainous terrain led to rapid run-off on multiple streams in the region. Maine. Localized heavy rain occurred in these areas with considerable flash flooding being reported. Showers and thunderstorms began in the Andover area around 2:30 am on June 26th.  The storms intensified and spread across the mountains in the surrounding towns to include Byron and Roxbury.  Rainfall rates peaked from 3:30 am to 6:00 am when the bulk of the heavy rainfall fell in the region.  The showers and thunderstorms weakened and moved off to the north with just very light rainfall through 8 am before ending.  Radar estimated rainfall amounts of 2 to 3��� in Bryon and Roxbury with even higher amounts of rain in North Andover. Radar estimated a very localized area of rainfall of up to 6��� of rainfall just north of town in mountainous terrain.   The bulk of this rainfall occurred in less than 3 hours.  The extreme rainfall rates in hilly and mountainous terrain led to rapid run-off on multiple streams in the region.

Flood in OXFORD, MAINE
From 26-JUN-23 06:00:00 to 26-JUN-23 10:00:00 (EST-5)
Location: FRYE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall between 3 and 4 inches fell across the headwaters of the Swift River during the early morning hours of the 26th. The resultant runoff caused the river to rise above flood stage (7Ft) and crest at 8.32 feet around 945 AM based on data from the USGS river gage in Roxbury. State Route 17 is closed in Roxbury due to flooding from Frye Crossover Road to Black Ridge Road.

Flash Flood in OXFORD, MAINE
From 26-JUN-23 03:10:00 to 26-JUN-23 07:30:00 (EST-5)
Location: ANDOVER
Flood cause: Heavy Rain
Property damage: 2.60M
Crop damage: 0.00K
Reported by: Emergency Manager

Considerable flash flooding occurred in Andover on the morning of the 26th after 3 and 6 inches of rain fell along the south facing slopes of the Wyman Mountain. Abbott Brook was redirected and severely impacted Wyman Hill Road and personal property along it. At one stretch along Wyman Hill Rd, Abbott Brook was diverted and is running directly down the middle of the road. More than a dozen residents were impacted, leaving people without road access. The main bridge at Wyman Hill Rd and Cross Rd was washed out. There was also one water rescue in Andover as a vehicle got stuck in the flood waters. The runoff caused the Ellis River to climb above flood stage cresting at 17.29 feet.
Additional roads in Andover that sustained washouts were East B Hill Road and South Arm Road. The major thruway of Route 120 was closed from Route 5 to Roxbury Pond Road due to flooding out of the Ellis River.

Flash Flood in OXFORD, MAINE
From 26-JUN-23 04:30:00 to 26-JUN-23 07:30:00 (EST-5)
Location: HOUGHTON
Flood cause: Heavy Rain
Property damage: 528.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding occurred in Bryon on the morning of the 26th after 3 and 5 inches of rain fell along the south facing slopes of the Wyman Mountain. Garland Pond Road, Dingle Hill Road, #6 Road to Weld, Buckfield Hill Road, Lohnes Farm Road and Route 17 all sustained damage. Garland Pond Road, Dingle HIll Road and #6 Roads were not passable for more than 24 hours.