A weakening upper level low pressure system traversed across Arizona on June 4th. As it did, it tapped leftover moisture from what was Tropical Storm Alvin, and triggered some strong thunderstorms.
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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 weakening upper level low pressure system traversed across Arizona on June 4th. As it did, it tapped leftover moisture from what was Tropical Storm Alvin, and triggered some strong thunderstorms. One of the storms produced a brief landspout tornado in Apache County.
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 4, 3:49 AM MST, 6 hours 11 minutes earlier.
Area Forecast Discussion National Weather Service Flagstaff AZ Issued by National Weather Service Tucson AZ 349 AM MST Wed Jun 4 2025 .SYNOPSIS...Scattered showers and thunderstorms will continue through the day today, with a Flash Flood Watch in effect for north-central and northwestern Arizona through this evening. Only a slight chance of showers and thunderstorms continues Thursday along the Utah/Arizona border. Warmer and drier conditions return Friday through the weekend. && .DISCUSSION...After an active day on Tuesday, a few showers and thunderstorms have continued across northern Arizona overnight. With the upper level low centered over the northern Baja early this morning, most of the activity overnight has been closer to the CA/AZ border. The upper low will gradually slide east through the day today. We're already starting to see some cell redevelopment over the Phoenix valley early this morning, and the hi-resolution guidance shows this trend continuing through the morning hours with the aided support from the advancing upper low. Expect increasing showers and storms this morning, with at least scattered coverage through much of the day. A few strong storms producing hail and gusty winds can't be ruled out with bulk shear values ranging from 25-40 kt. The greater threat will be training thunderstorms leading to areas of flash flooding. This is especially true for areas that received a soaking yesterday. Some spots in Coconino/Yavapai counties received 1-3" of rain yesterday, and additional heavy rain could lead to flooding. A Flash Flood Watch remains in effect for these areas today, and has been extended through 11 PM MST to account for lingering storm activity this evening. The trough passage and shower activity will keep temperatures today around 10 degrees cooler than normal. Conditions begin to dry out by later this evening with the only remaining storm chances lingering from around Grand Canyon northward tonight through Thursday afternoon. Isolated heavy rain and flash flooding could still be possible for sensitive areas on Thursday. Thursday will begin to see increasing temperatures, with the real warming arriving Friday. High pressure builds over the region this weekend with temperatures returning to more seasonal readings for early June. Much more typical June weather is in store this weekend and through much of next week. && .AVIATION...Wednesday 04/12Z through Thursday 05/12Z...VFR conditions persist outside of SHRA/TSRA causing periods of MVFR/IFR visibilities and ceilings. Brief FG possible through 16Z across higher terrain. Chances for showers/storms will continue through at least 06Z. Stronger storms will be capable of producing +RA, hail, and gusty/erratic winds. Thursday 05/12Z through Saturday 07/12Z...Mostly VFR conditions expected, outside of lingering -SHRA/-TSRA along and north of I-40 Thursday afternoon/evening. Gusty and erratic winds possible near storms/showers, but otherwise look for SW-W winds 5-15 kts. && .FIRE WEATHER...Scattered showers and thunderstorms will continue across northern Arizona today, and will shift to areas from Grand Canyon northward on Thursday. A few stronger storms could produce hail, heavy rain, and erratic wind gusts. Outside of storms, expect light west to southwest winds 10-15 mph and cool temperatures. Friday through Sunday...A period of dry and warming weather returns Friday through the weekend. Expect decreasing humidity with light winds around 10-15 mph each day. && .FGZ WATCHES/WARNINGS/ADVISORIES... Flood Watch through this evening for AZZ004-006>008-012-015-016- 037-038. && PUBLIC...MCT AVIATION...Konieczny FIRE WEATHER...MCT For Northern Arizona weather information visit weather.gov/flagstaff
The Flagstaff radar (KFSX), 184 km away, was scanning. The volume nearest the first event began at 17:00 UTC.
1 tornado. Local standard time, as filed.
Public reported via social media a video of a landspout tornado out in a rural field about 5 miles NNE of Springerville. No damage was reported. Tornado was rated EFU, but could be an EF0. No damage survey was done. Path is approximated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2025Every state in 2025This day in weather historyThe tornado archive for Arizona, 2025Warnings in Arizona, June 2025
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: 1254845.