On July 4 the NWS SPC highlighted a High Risk of Severe thunderstorms over Western Illinois in the 0600 outlook At around 4:05AM CDT weak supercells started to pop up over Northern Arkansas and Southern Missouri, around 4:50AM the "Tornado flare" started with very strong cells appearing across the Future High Risk, in the next outlook a High Risk was issued...a EF0 touched down near Saint Louis...the tornado strengthened to a EF1 and continued to the NE, around 5:05AM the Tornado hit Saint Louis at EF4 intensity, and weakened to a EF3 quickly...the tornado weakened to a EF2 causing extensive roof damage, the tornado continued to weaken to a EF1 around 5:20AM, and then a EF0 around 5:25AM, the tornado quickly grew back into a EF1 then became a waterspout at EF2 intensity, it damaged East St