Perry said the devastation is almost incomprehensible. Abbott urged residents to be cautious of those who might try to scam them as they rebuild.
The National Weather Service said Friday that the Granbury tornado was an EF-4, based on the Fujita tornado damage scale. Winds in an EF-4 tornado are between 166 and 200 mph. An EF-5 is the most severe.
Earlier Friday, the Hood County Sheriff's Office said the death toll is unlikely to change, as those who were reported missing were with relatives or friends and are safe.
Workers on Friday cleared debris in nearby Cleburne, where a tornado cut a mile-wide path through part of the city Wednesday and damaged about 600 homes. The weather service said it was an EF-3, which has winds between 136 and 165 mph. No deaths or severe injuries were reported.
Associated Press writer Jamie Stengle in Granbury also contributed to this report.