A complex of severe thunderstorms, including several embedded supercell storms, developed in the vicinity of the Davis and Glass Mountains during the afternoon of the 12th. This activity moved east into the Lower Trans Pecos region of west Texas through the early evening hours. Large hail, severe winds, and at least one tornado accompanied the convective complex. Radar indications suggested that the strongest storms tracked over remote parts of southern Pecos County and northwest Terrell Counties, where several Tornado Warnings were issued based on Doppler radar signatures of intense mesocyclone circulations. Although one tornado was spotted by a sheriff's deputy dispatched to observe the storms, the most dangerous activity remained over open range land.Severe convective development began to spread north along a dryline during the late afternoon and evening hours. A complex of thunderstorms that included at least three supercells affected parts of the Permian Basin, and produced large hail and damaging winds.

Hail in PECOS, TEXAS
From 12-JUN-04 15:00:00 to 12-JUN-04 15:00:00 (CST)
Location: BELDING
Magnitude: 0.75 
Property damage: 0
Crop damage: 0
Reported by: LAW ENFORCEMENT

Large hail was reported in Belding.

Hail in BREWSTER, TEXAS
From 12-JUN-04 16:05:00 to 12-JUN-04 16:10:00 (CST)
Location: ALPINE
Magnitude: 1.75 
Property damage: 0
Crop damage: 0
Reported by: GENERAL PUBLIC

Hail ranging in size from dimes to golfballs was reported in the city of Alpine. No damage was reported.

Tornado in PECOS, TEXAS
From 12-JUN-04 15:55:00 to 12-JUN-04 15:57:00 (CST)
Location: FT STOCKTON
Tornado F-scale: F0
Property damage: 0
Crop damage: 0
Reported by: LAW ENFORCEMENT

A Pecos County Sheriff's deputy observed a tornado just east of U.S. Highway 385. The deputy described the tornado as a well-developed cone-shaped vortex, approximately 150 yards in width, that remained in open range land for about two minutes as it moved east. The deputy searched the area for damage after the tornado dissipated, and reported "shredded" mesquite trees in the tornado's path. Otherwise, no damage to man-made structures occurred.

Hail in TERRELL, TEXAS
From 12-JUN-04 17:00:00 to 12-JUN-04 17:00:00 (CST)
Location: SANDERSON
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

A storm spotter reported nickel to quarter size hail on the Terrell and Pecos County line along U.S. Highway 90.

Hail in BREWSTER, TEXAS
From 12-JUN-04 16:00:00 to 12-JUN-04 16:05:00 (CST)
Location: MARATHON
Magnitude: 0.75 
Property damage: 0
Crop damage: 0
Reported by: GENERAL PUBLIC

Penny size hail was reported in Marathon.

Hail in PECOS, TEXAS
From 12-JUN-04 15:30:00 to 12-JUN-04 15:30:00 (CST)
Location: FT STOCKTON
Magnitude: 1.75 
Property damage: 0
Crop damage: 0
Reported by: LAW ENFORCEMENT

Law enforcement officials reported golfball size hail along U.S. Highway 385 south of Fort Stockton. The officer also observed a funnel cloud to his southwest at the time of the report.

Hail in PECOS, TEXAS
From 12-JUN-04 17:00:00 to 12-JUN-04 17:00:00 (CST)
Location: LONGFELLOW
Magnitude: 1.00 
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

A storm spotter reported nickel to quarter size hail on the Terrell and Pecos County line along U.S. Highway 90.

Hail in BREWSTER, TEXAS
From 12-JUN-04 17:00:00 to 12-JUN-04 17:20:00 (CST)
Location: MARATHON
Magnitude: 0.88 
Property damage: 0
Crop damage: 0
Reported by: GENERAL PUBLIC

A second severe thunderstorm affected Marathon, and produced penny size hail in the city. This storm continued to produce large hail as it moved to the east. A motorist traveling along U.S. Highway 90 encountered nickel size hail east of Marathon.

Thunderstorm Wind in TERRELL, TEXAS
From 12-JUN-04 17:35:00 to 12-JUN-04 17:35:00 (CST)
Location: SANDERSON
Magnitude: 52 EG
Property damage: 0
Crop damage: 0
Reported by: TRAINED SPOTTER

A trained weather spotter estimated severe thunderstorm wind gusts to 60 MPH in Sanderson.