A strong upper level storm system was moving through the southwest US toward the Southern Plains during the morning of the 13th. A warm front developed and moved north in Western North Texas by afternoon, with moist and unstable air to its south. Also a dry line moved into Western north Texas south of the warm front. Thunderstorms developed over western Texas and moved in the southern parts of western north Texas. Supercell thunderstorms quickly developed and moved east through Knox, Baylor, and Archer counties. Very large hail, strong wind gusts, and tornadoes were reported with these storms.  North of the warm front, severe thunderstorms moved east and affected the rest of western north Texas. Large hail was the main threat with these storms.

Hail in BAYLOR, TEXAS
From 13-APR-07 13:31:00 to 13-APR-07 13:31:00 (CST-6)
Location: SEYMOUR
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in BAYLOR, TEXAS
From 13-APR-07 13:37:00 to 13-APR-07 13:37:00 (CST-6)
Location: SEYMOUR
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in BAYLOR, TEXAS
From 13-APR-07 13:37:00 to 13-APR-07 13:37:00 (CST-6)
Location: RED SPRINGS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in BAYLOR, TEXAS
From 13-APR-07 13:45:00 to 13-APR-07 13:45:00 (CST-6)
Location: SEYMOUR
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ARCHER, TEXAS
From 13-APR-07 14:54:00 to 13-APR-07 14:54:00 (CST-6)
Location: LAKESIDE CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WICHITA, TEXAS
From 13-APR-07 14:56:00 to 13-APR-07 14:56:00 (CST-6)
Location: WICHITA FALLS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WICHITA, TEXAS
From 13-APR-07 15:00:00 to 13-APR-07 15:00:00 (CST-6)
Location: WICHITA FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WICHITA, TEXAS
From 13-APR-07 15:02:00 to 13-APR-07 15:02:00 (CST-6)
Location: WICHITA FALLS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Reported at the county EOC.

Hail in KNOX, TEXAS
From 13-APR-07 13:02:00 to 13-APR-07 13:02:00 (CST-6)
Location: MUNDAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in KNOX, TEXAS
From 13-APR-07 13:15:00 to 13-APR-07 13:15:00 (CST-6)
Location: GOREE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KNOX, TEXAS
From 13-APR-07 13:15:00 to 13-APR-07 13:15:00 (CST-6)
Location: TRUSCOTT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in BAYLOR, TEXAS
From 13-APR-07 14:00:00 to 13-APR-07 14:00:00 (CST-6)
Location: SEYMOUR
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ARCHER, TEXAS
From 13-APR-07 14:20:00 to 13-APR-07 14:20:00 (CST-6)
Location: HOLLIDAY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WICHITA, TEXAS
From 13-APR-07 14:30:00 to 13-APR-07 14:30:00 (CST-6)
Location: KADANE CORNER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ARCHER, TEXAS
From 13-APR-07 14:49:00 to 13-APR-07 14:49:00 (CST-6)
Location: HOLLIDAY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in CLAY, TEXAS
From 13-APR-07 15:15:00 to 13-APR-07 15:15:00 (CST-6)
Location: DEAN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLAY, TEXAS
From 13-APR-07 15:44:00 to 13-APR-07 15:44:00 (CST-6)
Location: THORNBERRY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in BAYLOR, TEXAS
From 13-APR-07 13:35:00 to 13-APR-07 13:35:00 (CST-6)
Location: SEYMOUR
Magnitude: 2.75 
Property damage: 3.00M
Crop damage: 0.00K
Reported by: Newspaper

Numerous roofs were damaged due to the large hail. Hundreds of cars sustained major damage, including large dents and windows shattered. The skylights at the courthouse and hospital were shattered. Numerous businesses and homes sustained window damage. Hundreds of trees were also significantly damaged due to the hail and winds. Thousands of residents were also without power for hours.

Tornado in BAYLOR, TEXAS
From 13-APR-07 13:38:00 to 13-APR-07 13:48:00 (CST-6)
Location: SEYMOUR
Tornado F-scale: EF0
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chasers observed a large and potentially damaging tornado to the south and southeast of Seymour.  Fortunately, the tornado occurred in rural areas and no structural damage was reported.  The tornado formed near U.S. Highways 183/283 approximately 6 miles south-southwest of Seymour, and the width of the tornado quickly increased to about one-half mile as it moved to the east-northeast.  The tornado became obscured by rain, but it believed to have dissipated before reaching state highway 114.