Summary of the events for October 31 1999:An upper level low pressure system moving across southern Oklahoma created enough instablility on its northern side for thunderstorms to develop within areas of rain. These thunderstorms were unusual in that they moved from east to west.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TSA wrote it up.
Summary of the events for October 31 1999:An upper level low pressure system moving across southern Oklahoma created enough instablility on its northern side for thunderstorms to develop within areas of rain. These thunderstorms were unusual in that they moved from east to west. Enough wind shear briefly developed for one of the thunderstorms to produce four tornadoes in Creek county.
The national radar mosaic for the moment the first event began.
4 tornado. Local standard time, as filed.
A tornado briefly touched down 3 miles east of Sapulpa west of the intersection of OK Hwy 117 and US Hwy 75. A shed was destroyed, and windows were blown out of a mobile home.
A brief tornado touchdown occurred 3 miles southwest of Sapulpa. No damage was reported.
A tornado briefly touched down 4 miles north of Kellyville or 2 miles west of the junction of OK Hwys 33 and 66. There was some tree damage.
There was a brief tornado touchdown near OK Hwy 48 south of Mannford, causing some tree damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 1999Every state in 1999This day in weather historyThe tornado archive for Oklahoma, 1999Warnings in Oklahoma, October 1999
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 5723615, 5723613, 5723614, 5723612.