Chickasha tornado, 24 May 2011Photo: Jeremy Grams · Source · Public domain. Resized for display; WebP conversion.- Location
- Chickasha–Blanchard–Newcastle, Oklahoma
- Official rating
- EF4 Damage-based rating
- Local time · 24 May 2011
- 17:06–18:01 CDT (UTC−5)
- UTC
- 2011-05-24 22:06 – 2011-05-24 23:01 UTC
- Time on the ground
- 55 minutes
- Track length
- 33 mi
- Maximum width
- 880 yd
- Damage wind category
- EF4 damage category
Event & radar context
Times and damage rating follow the cited NWS review. The sequence includes surrounding scans for context. Velocity is the raw radial component measured by the radar, not total wind speed or storm-relative velocity.
Interpreting the rating
F, EF and IF are different damage-rating scales. Original source labels are preserved. Badge colours group the numerical categories for browsing; they do not imply identical wind thresholds. Radar products do not directly establish the damage rating.
Event facts: National Weather Service review ↗