Enough monsoon moisture remained over northern Arizona for scattered thunderstorms with isolated marginally severe storms.
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 FGZ wrote it up.
Enough monsoon moisture remained over northern Arizona for scattered thunderstorms with isolated marginally severe storms.
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 Aug 26, 8:42 AM MST, 2 hours 23 minutes earlier.
Area Forecast Discussion National Weather Service Flagstaff AZ 842 AM MST Fri Aug 26 2022 .SYNOPSIS...Widespread showers and storms are forecast through Saturday, making flash flooding possible in vulnerable areas. Drier conditions begin Sunday, ushering in widespread higher temperatures. Storm chances are limited next week but remain mentionable for the White Mountains. && .UPDATE...Light showers and thunderstorms have started already this morning as seen on radar. An update was made to the forecast to better reflect this activity. && .PREV DISCUSSION /248 AM MST/...Persistent eastward storm motion today will limit a widespread flash flood threat over northern Arizona. However, moist soils and strong flows on local waterways mean isolated instances of flash flooding remain possible. This is especially true if storms train over sensitive areas. Although widespread monsoonal thunderstorm activity is expected today, a steady and significant daily decrease in activity is expected beginning tomorrow. An infusion of dry northwesterly flow means that by the beginning of next week, hot and dry weather is likely. Lowland desert temperatures are poised to climb into the triple digits, making midday strenuous outdoor activity risky. Any storms that form during this dry stretch next week are most likely to affect the White Mountains. Toward the end of next week, a return to moist southwesterly flow could boost rain chances across northern Arizona. Uncertainty exists over the strength of this return, though. && AVIATION...For the 18Z TAF package...VFR conditions and light winds will prevail. MVFR/VFR and gusty/erratic winds in and near storms around 18Z diminishing by 05Z. Aviation discussion not updated for TAF amendments. && FIRE WEATHER...Scattered showers and thunderstorms are likely for today and Saturday. Lightning, flash flooding, and outflow winds will be the main threats. Sunday through Tuesday...Expect a downward trend of storm coverage with increasing temperatures each day through early next week. Minimum afternoon humidity in the 20 to 30 percent range. && && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...Kobold/BAJ AVIATION...Kobold FIRE WEATHER...Kobold For Northern Arizona weather information visit weather.gov/flagstaff
The Flagstaff radar (KFSX), 55 km away, was scanning. The volume nearest the first event began at 18:02 UTC.
1 funnel cloud, 1 flash flood. Local standard time, as filed.
A funnel cloud was observed along Interstate 40 between mile markers 220 and 240.
The Little Colorado River had a 3 foot rise above Lyman Lake.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2022Every state in 2022This day in weather historyWarnings in Arizona, August 2022
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 2026-09-24. Each event’s entry at NCEI: 1055478, 1055479.