On May 24 an isolated severe storm formed near Abilene and produced damaging winds and flash flooding in the city.  On May 25, an isolated gargantuan, southwest moving  supercell, moved southwest across southern Brown County, San Saba County and Mason County during the evening hours.  As it did, it left a path of destruction of damaging winds and large hail.  The largest hail was near Richland Springs.  Then another line of storms resulted in a few severe storms across the Big Country during the evening hours.

Thunderstorm Wind in SAN SABA, TEXAS
From 25-MAY-18 19:50:00 to 25-MAY-18 19:55:00 (CST-6)
Location: RICHLAND SPGS
Magnitude: 74.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The San Saba Emergency Manager reported uprooted trees in Richland Springs and winds estimated at 80 to 90 mph, between 850 and 900 PM.   A National Weather Service Survey Team found lots of evidence of damaging straight line winds around 80 to 85 mph.  In addition to the damaging thunderstorm winds, softball sized hail fell in a 9 mile by 2 mile swath northeast and southwest of Richland Springs.  This swath of hail  extended northeast towards Locker, Spring Creek and Algerita and southwest across Richland Springs.
This combination of wind and hail damaged or destroyed numerous vehicles, broke windows, damaged siding and roofs on many homes.  One trailer was destroyed by the damaging thunderstorm winds.  All of the debris was aligned from northeast to southwest.  We observed many oak trees that were completely defoliated. There were many broken tree branches and some trees were uprooted.  Livestock were also killed by the damaging winds and large hail stones.

Hail in MASON, TEXAS
From 25-MAY-18 20:55:00 to 25-MAY-18 20:57:00 (CST-6)
Location: MASON CO ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A National Weather Service employee reported that hail fell between 955 PM and 959 PM and it covered the ground.

Thunderstorm Wind in JONES, TEXAS
From 25-MAY-18 20:03:00 to 25-MAY-18 20:05:00 (CST-6)
Location: STAMFORD
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in CALLAHAN, TEXAS
From 25-MAY-18 21:11:00 to 25-MAY-18 21:13:00 (CST-6)
Location: CLYDE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported tractor trailers were blown over on top of of cars.

Flood in TAYLOR, TEXAS
From 24-MAY-18 20:06:00 to 24-MAY-18 20:06:00 (CST-6)
Location: ABILENE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Abilene Police Department reported street flooding in the area around the Mall of Abilene and south to the Buttonwillow area.

Thunderstorm Wind in TAYLOR, TEXAS
From 24-MAY-18 19:30:00 to 24-MAY-18 19:32:00 (CST-6)
Location: WYLIE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported sections of residential fencing blown over and large tree limbs taken off trees on Rebecca Lane and Royal Court Circle in Abilene. Winds were estimated in excess of 60 mph along with half inch hail.

Thunderstorm Wind in TAYLOR, TEXAS
From 24-MAY-18 20:06:00 to 24-MAY-18 20:08:00 (CST-6)
Location: ABILENE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Abilene Police Department reported a utility pole down in the Button Willow area of Abilene.

Hail in BROWN, TEXAS
From 25-MAY-18 19:09:00 to 25-MAY-18 19:11:00 (CST-6)
Location: ZEPHYR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported tons of pea size hail with three inch drifts.

Thunderstorm Wind in BROWN, TEXAS
From 25-MAY-18 19:10:00 to 25-MAY-18 19:12:00 (CST-6)
Location: BROWNWOOD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Brownwood Police Department reported power lines, power poles, and trees down across Brownwood and Early.

Thunderstorm Wind in BROWN, TEXAS
From 25-MAY-18 19:11:00 to 25-MAY-18 19:13:00 (CST-6)
Location: ZEPHYR
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

An amateur radio operator reported tree damage in Zephyr.