Deep moisture and a mesoscale convective vortext brought severe thundertorms over northern Arizona.
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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.
Deep moisture and a mesoscale convective vortext brought severe thundertorms over northern Arizona.
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 Jun 27, 3:42 AM MST, 4 hours 1 minute earlier.
Area Forecast Discussion National Weather Service Flagstaff AZ 342 AM MST Thu Jun 27 2024 .SYNOPSIS...The daily chance for afternoon and evening showers and thunderstorms will continue today. Activity decreases for Friday and Saturday, and then slowly ramps up again from Sunday into next week. && .DISCUSSION...One final day of monsoonal showers and storms are expected today. Activity should be concentrated along and northeast of the Mogollon Rim. Meanwhile, a trough is moving eastward across the NW U.S. This trough is what's shifting the high driving our monsoonal precipitation. While the high shifts, afternoon winds will be increasing this afternoon and tomorrow with gusts 20-30 mph. Friday will be significantly drier than recent days. CAMs do still show some isolated activity to the east, including over the Navajo and Hopi Nations. Overall moisture availability is significantly lower with these, so showers will predominately generate virga and thunderstorms will be high based. Drier weather will presist into Saturday, but isolated shower and storm activity is expected over the White Mountains. During this period of drier weather, daytime temperatures are expected to warm some. Sunday going into next week sees high pressure building back. This will translate into gradually increasing shower and storm chances pushing back west for the end of the weekend, into next week. Each day next week will bring shower and storm chances, but with fluctuations in coverage and intensity. && .AVIATION...Thursday 27/12Z through Friday 28/12Z...SHRA/TSRA possible north and east of a P23-KSEZ-E24 line 19Z-03Z. SHRA may linger near E91/KRQE through 09Z. Brief MVFR conditions and gusty, erratic winds possible in and around TS. SW winds 10-15 kts with gusts up to 20-25 kts before 03Z, then becoming light and variable. OUTLOOK...Friday 28/12Z through Sunday 30/12Z...TSRA/SHRA possible east of a KPGA-KINW-KJTC line, 19Z Friday-03Z Saturday. Another round of TSRA/SHRA possible in vicinity of KSOW/KJTC on Saturday. Winds SW 10-15 ks on Friday, subsiding to 5-10 kts on Saturday. && .FIRE WEATHER...Today and Friday...Scattered showers and storms along and north of the Mogollon Rim this afternoon, with isolated storms possible again on Friday over eastern Arizona. Gusty, erratic winds, heavy rainfall, and hail possible in any stronger storms. Warm temperatures with breezy southwest winds 10-20 mph each day. Saturday through Monday...Isolated storms remain in the White Mountains on Saturday, with coverage then gradually increasing across the state for Sunday and Monday. Warm temperatures with southwest winds 10-15 mph each day. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && PUBLIC...RKR AVIATION...Humphreys FIRE WEATHER...Humphreys For Northern Arizona weather information visit weather.gov/flagstaff
The Flagstaff radar (KFSX), 61 km away, was scanning. The volume nearest the first event began at 14:44 UTC.
2 thunderstorm wind, 1 flash flood. Local standard time, as filed.
The ADOT wind sensor at Two Guns measured a peak wind gust of 63 MPH at 743 AM from a thunderstorm.
A wind gust of 63 MPH was reported at the Winslow Airport at 823 AM.
Heavy rain brought 1 to 2 foot deep flash flood and debris through the very popular Antelope Canyon area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2024Every state in 2024This day in weather historyWarnings in Arizona, June 2024
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: 1193229, 1194830, 1193207.