A shortwave trough of low pressure moved across Arizona to produce scattered storms. One storm produced a very we developed land spout tornado.
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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 FGZ wrote it up.
A shortwave trough of low pressure moved across Arizona to produce scattered storms. One storm produced a very we developed land spout tornado.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Flagstaff, AZ wrote its last area forecast discussion before the first event at Oct 21, 10:42 AM MST, 3 hours 24 minutes earlier.
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</html>The Flagstaff radar (KFSX), 62 km away, was scanning. The volume nearest the first event began at 21:04 UTC.
1 tornado. Local standard time, as filed.
A well developed landspout tornado was reported along Interstate 40 near mile marker 235.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2018Every state in 2018This day in weather historyThe tornado archive for Arizona, 2018Warnings in Arizona, October 2018
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: 790003.