A shortwave trough moved east through the Southern Plains during the early afternoon hours and aided in the initation of supercell thunderstorms along a cold front located just northwest of the Dallas Fort Worth metroplex.  Numerous supercell thunderstorms developed and produced hail up to the size of baseballs, destructive outflow winds of up to 70 mph and three brief EF-0 tornadoes.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 20:18:00 to 20-MAY-10 20:18:00 (CST-6)
Location: MCGREGOR AFB
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported nickel sized hail at the intersection of Old Lorena Road and Highway 84.

Thunderstorm Wind in MCLENNAN, TEXAS
From 20-MAY-10 20:18:00 to 20-MAY-10 20:18:00 (CST-6)
Location: SOUTH BOSQUE
Magnitude: 61.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported thunderstorm winds blew down a few large trees on Old Lorena Road near Woodway.  Winds were estimated to have gusted as high as 70 mph.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 19:23:00 to 20-MAY-10 19:23:00 (CST-6)
Location: AXTELL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported penny sized hail in the community of Axtell.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 20:25:00 to 20-MAY-10 20:25:00 (CST-6)
Location: WOODWAY
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported golfball sized hail in Woodway.

Hail in BOSQUE, TEXAS
From 20-MAY-10 19:37:00 to 20-MAY-10 19:37:00 (CST-6)
Location: VALLEY MILLS
Magnitude: 1.75 
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported golfball sized hail at Valley Mills High School.

Hail in DALLAS, TEXAS
From 20-MAY-10 11:55:00 to 20-MAY-10 11:55:00 (CST-6)
Location: COCKRELL HILL
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Golfball sized hail was reported at Bishop Dunne High School in Cockrell Hill.

Hail in DALLAS, TEXAS
From 20-MAY-10 13:10:00 to 20-MAY-10 13:10:00 (CST-6)
Location: SEAGOVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A Seagoville police officer reported quarter sized hail.

Hail in ELLIS, TEXAS
From 20-MAY-10 13:59:00 to 20-MAY-10 13:59:00 (CST-6)
Location: IKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

One inch sized hail was reported at the intersection of FM 878 and East Campus Road near Palmer.

Hail in KAUFMAN, TEXAS
From 20-MAY-10 14:30:00 to 20-MAY-10 14:30:00 (CST-6)
Location: KEMP
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Kemp Public Schools reported quarter sized hail along Highway 175.

Hail in NAVARRO, TEXAS
From 20-MAY-10 15:05:00 to 20-MAY-10 15:05:00 (CST-6)
Location: CHATFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ellis County Emergency Management reported one inch hail in the town of Chatfield.

Hail in ELLIS, TEXAS
From 20-MAY-10 16:20:00 to 20-MAY-10 16:20:00 (CST-6)
Location: FORRESTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A resident of Forreston reported that as a thunderstorm moved through town, winds blew down small tree branches and penny sized hail fell.

Hail in NAVARRO, TEXAS
From 20-MAY-10 15:25:00 to 20-MAY-10 15:25:00 (CST-6)
Location: BAZETTE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Half Dollar Sized hail was reported 3 miles northwest of Kerens.

Hail in ERATH, TEXAS
From 20-MAY-10 04:33:00 to 20-MAY-10 04:33:00 (CST-6)
Location: HUCKABAY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Nickel sized hail was reported 2 miles west of Huckaby.

Hail in HOOD, TEXAS
From 20-MAY-10 05:38:00 to 20-MAY-10 05:38:00 (CST-6)
Location: MAMBRINO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime sized hail was reported on FM 2425, approximately 5 miles south of Granbury.

Tornado in ELLIS, TEXAS
From 20-MAY-10 14:20:00 to 20-MAY-10 14:21:00 (CST-6)
Location: ALMA
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Ellis County Emergency Management reported a brief tornado touchdown approximately 2 miles northeast of Alma.  This tornado damaged an abandoned barn and uprooted and twisted a few trees.  The abandoned barn eventually collapsed due to the structural damage caused by the tornado.  This damage is consistent with a tornado producing wind speeds of 80 mph, so it has been rated EF-0.

Hail in ELLIS, TEXAS
From 20-MAY-10 16:30:00 to 20-MAY-10 16:30:00 (CST-6)
Location: ITALY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny and Nickel sized hail was reported in the town of Italy.

Hail in FREESTONE, TEXAS
From 20-MAY-10 16:55:00 to 20-MAY-10 16:55:00 (CST-6)
Location: STREETMAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Freestone county sheriffs reported dime sized hail in the community of Southern Oaks.

Hail in ANDERSON, TEXAS
From 20-MAY-10 17:26:00 to 20-MAY-10 17:26:00 (CST-6)
Location: TENNESSEE COLONY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Anderson County Emergency Management reported quarter sized hail in Tennessee Colony.

Hail in HILL, TEXAS
From 20-MAY-10 17:53:00 to 20-MAY-10 17:53:00 (CST-6)
Location: HUBBARD
Magnitude: 1.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hill County Emergency Management reported golfball sized hail in Hubbard.

Hail in ANDERSON, TEXAS
From 20-MAY-10 17:54:00 to 20-MAY-10 17:54:00 (CST-6)
Location: PALESTINE ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Anderson County Emergency Management reported quarter sized hail in Harmony.

Thunderstorm Wind in MCLENNAN, TEXAS
From 20-MAY-10 20:10:00 to 20-MAY-10 20:10:00 (CST-6)
Location: MCGREGOR AFB
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

McGregor Municipal Airport ASOS recorded a peak wind gust of 54 kts as thunderstorms moved through the county.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 18:30:00 to 20-MAY-10 18:30:00 (CST-6)
Location: LEROY
Magnitude: 2.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Baseball sized hail was reported between Leroy and Elm Mott on FM 308.

Thunderstorm Wind in FALLS, TEXAS
From 20-MAY-10 21:03:00 to 20-MAY-10 21:03:00 (CST-6)
Location: BELVINS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators estimated 60 mph thunderstorm outflow winds at the intersection of Highway 7 and County Road 439.

Thunderstorm Wind in MCLENNAN, TEXAS
From 20-MAY-10 20:10:00 to 20-MAY-10 20:10:00 (CST-6)
Location: SOUTH BOSQUE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported an estimated wind gust of 60 mph at the intersection of Highway 84 and Old Lorena Road.

Thunderstorm Wind in FALLS, TEXAS
From 20-MAY-10 21:22:00 to 20-MAY-10 21:22:00 (CST-6)
Location: DURANGO
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators estimated thunderstorm outflow wind gusts up to 70 mph approximately 1 mile east of Belfalls.

Thunderstorm Wind in NAVARRO, TEXAS
From 20-MAY-10 16:24:00 to 20-MAY-10 16:24:00 (CST-6)
Location: CORSICANA MUNI ARPT
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Dallas Fort Worth area broadcast media reported 6 to 12 inch diameter trees were snapped by thunderstorm winds near Corsicana.  A sheet metal roof was also blown off of an old gas station.

Hail in NAVARRO, TEXAS
From 20-MAY-10 15:37:00 to 20-MAY-10 15:37:00 (CST-6)
Location: GOODLOW PARK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel sized hail was reported 5 miles southeast of Powell.

Hail in NAVARRO, TEXAS
From 20-MAY-10 15:39:00 to 20-MAY-10 15:39:00 (CST-6)
Location: GOODLOW PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail was reported 5 miles southeast of Powell.

Hail in NAVARRO, TEXAS
From 20-MAY-10 16:00:00 to 20-MAY-10 16:00:00 (CST-6)
Location: CORSICANA ARPT
Magnitude: 1.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Golfball sized hail was reported along Emhouse Road approximately 3 miles north northwest of Corsicana.

Hail in NAVARRO, TEXAS
From 20-MAY-10 16:10:00 to 20-MAY-10 16:10:00 (CST-6)
Location: CORSICANA
Magnitude: 2.75 
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Hail up to the size of baseballs was reported in Corsicana.

Hail in NAVARRO, TEXAS
From 20-MAY-10 16:25:00 to 20-MAY-10 16:25:00 (CST-6)
Location: ANGUS
Magnitude: 1.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golfball sized hail was reported in Mustang.

Hail in NAVARRO, TEXAS
From 20-MAY-10 16:27:00 to 20-MAY-10 16:27:00 (CST-6)
Location: ANGUS
Magnitude: 2.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Navarro County Emergency Management reported baseball sized hail 1 mile east of Angus.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 20:26:00 to 20-MAY-10 20:26:00 (CST-6)
Location: BEVERLY HILLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported quarter sized hail at the intersection of Panther Way and Hewitt Drive.

Hail in HOOD, TEXAS
From 20-MAY-10 05:40:00 to 20-MAY-10 05:40:00 (CST-6)
Location: GRANBURY MUNI ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel sized hail was reported in Pecan Plantation.

Hail in ELLIS, TEXAS
From 20-MAY-10 13:55:00 to 20-MAY-10 13:55:00 (CST-6)
Location: WAXAHACHIE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported in Waxahachie.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 20:31:00 to 20-MAY-10 20:31:00 (CST-6)
Location: HEWITT
Magnitude: 1.25 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported quarter to half dollar sized hail in Hewitt.

Hail in MILLS, TEXAS
From 20-MAY-10 21:40:00 to 20-MAY-10 21:40:00 (CST-6)
Location: GOLDTHWAITE
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Goldthwaite police officers reported golfball sized hail on highway 183 south of town.

Hail in LIMESTONE, TEXAS
From 20-MAY-10 18:40:00 to 20-MAY-10 18:40:00 (CST-6)
Location: MEXIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Mexia police officers reported quarter sized hail in town.

Tornado in ELLIS, TEXAS
From 20-MAY-10 13:06:00 to 20-MAY-10 13:11:00 (CST-6)
Location: WARD
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

At 206 pm CDT a tornado near Midloathian was reported by an Arlington Airport weather observer in a special observation.  The tornado was last reported by Ellis County Emergency Management at 211 pm CDT.  This tornado was also reported by local county spotters and HAM radio operators.  The tornado occurred over open county and no damage was reported.  This tornado has been rated an EF-0 producing wind speeds between 70 and 85 mph.

Tornado in HILL, TEXAS
From 20-MAY-10 17:55:00 to 20-MAY-10 17:55:00 (CST-6)
Location: HUBBARD
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hill County Emergency Management and storm spotters reported a brief tornado southeast of the community of Hubbard.  This tornado occurred over open country and was only briefly on the ground and produced no damage. The tornado was rated EF-0, producing winds around 70 mph.

Hail in FREESTONE, TEXAS
From 20-MAY-10 18:56:00 to 20-MAY-10 18:56:00 (CST-6)
Location: FAIRFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported quarter sized hail fell for 2 minutes near Fairfield.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 19:23:00 to 20-MAY-10 19:23:00 (CST-6)
Location: CHINA SPG
Magnitude: 1.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported golfball sized hail in China Springs.

Thunderstorm Wind in NAVARRO, TEXAS
From 20-MAY-10 16:24:00 to 20-MAY-10 16:24:00 (CST-6)
Location: CORSICANA MUNI ARPT
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Dallas-Fort Worth area broadcast media reported 6 to 12 inch diameter trees were snapped by thunderstorm winds near Corsicana.  A sheet metal roof was also blown off of an old gas station.

Hail in ELLIS, TEXAS
From 20-MAY-10 14:37:00 to 20-MAY-10 14:37:00 (CST-6)
Location: ENNIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Dallas-Fort Worth Broadcast Media reported quarter sized hail in the town of Ennis.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 19:45:00 to 20-MAY-10 19:45:00 (CST-6)
Location: MART
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter sized hail was reported in the town of Mart.

Hail in FALLS, TEXAS
From 20-MAY-10 21:20:00 to 20-MAY-10 21:20:00 (CST-6)
Location: CHILTON
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported golfball sized hail in Chilton.

Hail in FALLS, TEXAS
From 20-MAY-10 21:20:00 to 20-MAY-10 21:20:00 (CST-6)
Location: NORTH PRAIRIE
Magnitude: 1.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Waco broadcast media reported nickel to golfball sized hail covering the ground 6 miles north of Lott along Highway 77.

Thunderstorm Wind in HOPKINS, TEXAS
From 20-MAY-10 11:35:00 to 20-MAY-10 11:35:00 (CST-6)
Location: WEAVER
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hopkins County local and county Emergency Management officials determined that damage and debris reported near the intersection of Interstate 30 and Highway 67 was caused by straight line winds of approximately 70 mph.  Winds damaged trees, powerlines and power poles near this location.

Thunderstorm Wind in ELLIS, TEXAS
From 20-MAY-10 14:49:00 to 20-MAY-10 14:49:00 (CST-6)
Location: ALMA
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two semi-trucks were blown off of Interstate 45 near Alma by thunderstorm outflow winds.  The occupants of these trucks were not injured.  Winds also damaged some trees within the community of Alma.

Hail in MCLENNAN, TEXAS
From 20-MAY-10 20:31:00 to 20-MAY-10 20:31:00 (CST-6)
Location: HILLSIDE
Magnitude: 1.75 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

HAM radio operators reported golfball sized hail southeast of Hewitt.