A broad area of upper level cyclonic flow dominated the weather pattern on August 13th with amble moisture and cool air aloft.  This allowed for strong potential instability and wind shear in the atmosphere.  Once daytime heating occurred, scattered storms quickly began to develop across most of the state.  A few thunderstorms quickly became severe with isolated storms bringing damaging hail and winds from York to Somerset County.  In addition, localized flooding resulted from scattered showers and thunderstorms on the afternoon of the 13th.  A very moist airmass supported heavy rainfall rates of 2 inches an hour.  This heavy rain fell over saturated ground resulting in some minor road damage in interior sections of Western Maine.

Flood in OXFORD, MAINE
From 13-AUG-23 16:00:00 to 13-AUG-23 17:00:00 (EST-5)
Location: NORWAY CENTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Shoulder damage washout on local Morrill Road in Norway caused by heavy rain with rates up to 2 inches per hour. Total rainfall was around 2 and a half inches as estimated by radar.

Hail in SOMERSET, MAINE
From 13-AUG-23 13:26:00 to 13-AUG-23 13:29:00 (EST-5)
Location: BINGHAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped hail the size of golf balls in Bingham, Maine.

Hail in KENNEBEC, MAINE
From 13-AUG-23 13:30:00 to 13-AUG-23 13:35:00 (EST-5)
Location: NORTH MONMOUTH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm dropped hail the size of half dollars in Monmouth, Maine.

Thunderstorm Wind in YORK, MAINE
From 13-AUG-23 12:54:00 to 13-AUG-23 12:58:00 (EST-5)
Location: GREAT WORKS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Convective outflow winds from a severe thunderstorm downed powerlines on Agamanticus Road in South Berwick, Maine.

Hail in SOMERSET, MAINE
From 13-AUG-23 14:42:00 to 13-AUG-23 14:45:00 (EST-5)
Location: FAIRFIELD CENTER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped hail the size of half dollars in north of Fairfield, Maine.

Hail in OXFORD, MAINE
From 13-AUG-23 15:14:00 to 13-AUG-23 15:19:00 (EST-5)
Location: NORWAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped hail the size of quarters in Norway, Maine.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 13-AUG-23 16:34:00 to 13-AUG-23 16:37:00 (EST-5)
Location: CENTER MINOT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Convective outflow winds from a severe thunderstorm downed several trees and wires on Garfield Rd. in Minot.

Hail in FRANKLIN, MAINE
From 13-AUG-23 14:34:00 to 13-AUG-23 14:38:00 (EST-5)
Location: DRYDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A severe thunderstorm dropped hail the size of quarters in Wilton, Maine.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 13-AUG-23 15:20:00 to 13-AUG-23 15:24:00 (EST-5)
Location: EAST LIVERMORE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Convective outflow winds from a severe thunderstorm downed multiple trees in southeast of Livermore Falls, Maine.

Thunderstorm Wind in KENNEBEC, MAINE
From 13-AUG-23 14:44:00 to 13-AUG-23 14:47:00 (EST-5)
Location: VIENNA
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Convective outflow winds from a severe thunderstorm downed a tree in Vienna, Maine.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 13-AUG-23 16:32:00 to 13-AUG-23 16:37:00 (EST-5)
Location: SABATTUS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Convective outflow winds from a severe thunderstorm downed a tree on Phelan St. in Sabattus.

Thunderstorm Wind in ANDROSCOGGIN, MAINE
From 13-AUG-23 16:28:00 to 13-AUG-23 16:31:00 (EST-5)
Location: MECHANIC FALLS
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Convective outflow winds from a severe thunderstorm downed a tree on North Street in Mechanic Falls.