A nearly stationary upper level low pressure area parked near Brookings, Oregon brought abundant moisture across eastern Oregon.  This combined with daytime heating to produce a few severe thunderstorms and locally heavy rainfall.  Lightning caused a few wildfires which were quickly contained.

Hail in UMATILLA, OREGON
From 20-JUL-12 11:15:00 to 20-JUL-12 11:25:00 (PST-8)
Location: ECHO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in UMATILLA, OREGON
From 20-JUL-12 11:35:00 to 20-JUL-12 11:35:00 (PST-8)
Location: STANFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail accompanied by 30 mph wind.

Hail in UMATILLA, OREGON
From 20-JUL-12 12:00:00 to 20-JUL-12 12:11:00 (PST-8)
Location: (MEH)MEACHAM
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail accompanied by 0.31 inches of rainfall.

Hail in UMATILLA, OREGON
From 20-JUL-12 12:32:00 to 20-JUL-12 12:32:00 (PST-8)
Location: BINGHAM SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail reported at Umatilla Forks Campground.

Hail in UMATILLA, OREGON
From 20-JUL-12 12:48:00 to 20-JUL-12 12:48:00 (PST-8)
Location: TOLLGATE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail caused damage to vehicles.

Hail in UMATILLA, OREGON
From 20-JUL-12 12:45:00 to 20-JUL-12 12:45:00 (PST-8)
Location: BINGHAM SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail accompanied by wind strong enough to snap off small branches.

Debris Flow in LOWER COLUMBIA BASIN, OREGON
From 16-JUL-12 20:15:00 to 16-JUL-12 20:15:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Hail in UNION, OREGON
From 17-JUL-12 14:35:00 to 17-JUL-12 14:35:00 (PST-8)
Location: STARKEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORROW, OREGON
From 17-JUL-12 15:15:00 to 17-JUL-12 15:15:00 (PST-8)
Location: LENA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORROW, OREGON
From 17-JUL-12 15:30:00 to 17-JUL-12 15:30:00 (PST-8)
Location: LENA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail accompanied by minor creek flash flooding.

Hail in MORROW, OREGON
From 17-JUL-12 15:46:00 to 17-JUL-12 15:46:00 (PST-8)
Location: HEPPNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail dented vehicles, broke windshields and caused some roof damage.

Hail in UNION, OREGON
From 17-JUL-12 16:00:00 to 17-JUL-12 16:00:00 (PST-8)
Location: PALMER JCT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail up to 1 inch in diameter fell for 20 minutes and covered the ground.

Hail in WALLOWA, OREGON
From 17-JUL-12 16:30:00 to 17-JUL-12 16:30:00 (PST-8)
Location: WALLOWA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WALLOWA, OREGON
From 17-JUL-12 16:35:00 to 17-JUL-12 16:35:00 (PST-8)
Location: WALLOWA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy Rain in MORROW, OREGON
From 17-JUL-12 15:45:00 to 17-JUL-12 16:45:00 (PST-8)
Location: HEPPNER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Shobe Canyon mesonet station reported 1.1 inches of rainfall in 1 hour.

Hail in WALLOWA, OREGON
From 17-JUL-12 16:35:00 to 17-JUL-12 16:35:00 (PST-8)
Location: FLORA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winds gusting to 40 mph preceded the hail.

Hail in UNION, OREGON
From 18-JUL-12 15:25:00 to 18-JUL-12 15:25:00 (PST-8)
Location: PERRY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail size ranged from quarter to less than golf ball.

Hail in UNION, OREGON
From 18-JUL-12 15:30:00 to 18-JUL-12 15:30:00 (PST-8)
Location: LA GRANDE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Dime to golfball sized hail reported.

Funnel Cloud in UNION, OREGON
From 18-JUL-12 15:35:00 to 18-JUL-12 15:35:00 (PST-8)
Location: LA GRANDE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in UNION, OREGON
From 18-JUL-12 15:50:00 to 18-JUL-12 15:50:00 (PST-8)
Location: LA GRANDE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in UNION, OREGON
From 18-JUL-12 16:57:00 to 18-JUL-12 16:57:00 (PST-8)
Location: ALICEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in UNION, OREGON
From 18-JUL-12 17:08:00 to 18-JUL-12 17:08:00 (PST-8)
Location: IMBLER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in UNION, OREGON
From 18-JUL-12 17:40:00 to 18-JUL-12 17:55:00 (PST-8)
Location: COVE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in UNION, OREGON
From 18-JUL-12 18:41:00 to 18-JUL-12 18:41:00 (PST-8)
Location: ELGIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MORROW, OREGON
From 17-JUL-12 16:30:00 to 17-JUL-12 16:30:00 (PST-8)
Location: LEXINGTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in UMATILLA, OREGON
From 16-JUL-12 02:00:00 to 16-JUL-12 04:00:00 (PST-8)
Location: APEX
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rainfall caused flood waters and mud to flow into Helix and damage 16 roads, yards, homes, and basements.

Wildfire in LOWER COLUMBIA BASIN, OREGON
From 19-JUL-12 15:30:00 to 19-JUL-12 20:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 32.00K
Reported by: Newspaper

Flash Flood in UMATILLA, OREGON
From 16-JUL-12 02:00:00 to 16-JUL-12 04:00:00 (PST-8)
Location: APEX
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rainfall caused flood waters and mud to flow into Helix and damage 16 roads, yards, homes, and basements.

Hail in UMATILLA, OREGON
From 20-JUL-12 12:45:00 to 20-JUL-12 12:45:00 (PST-8)
Location: BINGHAM SPGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail still on the ground 3 hours after the storm passed.