Deep monsoon moisture over northern Arizona with light steering winds brought locally heavy rain to parts of the area.
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.
Deep monsoon moisture over northern Arizona with light steering winds brought locally heavy rain to parts of the area.
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 Jul 17, 4:07 PM MST, 38 minutes earlier.
Area Forecast Discussion National Weather Service Flagstaff AZ 407 PM MST Wed Jul 17 2024 .SYNOPSIS...Scattered showers and thunderstorms are expected each day through the next week as a moderate monsoon pattern continues across the region. Temperatures will remain above average through the weekend with typical afternoon winds. && .DISCUSSION...Storms have developed again today over the higher terrain, with somewhat greater coverage than yesterday. With the weak steering winds, the slow-moving storms have the potential for heavy rain and some local flash flooding this afternoon and evening. The greatest instability (CAPE) will be along and just south of the Mogollon Rim (again), and some storms will likely build toward the greater instability in Gila and Yavapai Counties later this afternoon against the generally southerly steering flow. Over the next couple days the strong ridge over the Great Basin will slowly move westward, bringing the ambient moisture with it. With this, we'll see little change in the overall convective potential across northern AZ as the axis of the ridge settles in to our west - but the distribution of the precipitation will evolve as the steering flow slowly changes. While the details can not be resolved at this time, isolated to scattered thunderstorms should be expected each day through the forecast period, with a continued threat of heavier precipitation from the Mogollon Rim to the south with this pattern. Under the strong ridge, very warm (even hot) temperatures are forecast to continue into the weekend with maximum temperatures running 5-10 degrees above normal for mid-July through Saturday. We are just below our excessive heat criteria, but the accumulated heat stress will continue to impact those in the valley areas. && .AVIATION...Thursday 18/00Z through Friday 19/00Z...VFR conditions mainly persist through the TAF period, minus brief MVFR conditions in stronger storms. SHRA/TSRA activity will diminish through 06Z, with only a few stray showers likely afterwards. Expect another round of showers/thunderstorms after 18Z across much of northern Arizona. Heavy rain, hail, and gusty/erratic outflow winds will be the primary threats from storm development. OUTLOOK...Friday 19/00Z through Sunday 21/00Z...Expect daily SHRA/TSRA chances mostly in the afternoon/evening hours. Gusty and erratic winds likely from storm development, with NW winds generally less than 15 kts otherwise. VFR conditions will persist outside of MVFR conditions from showers/storms. && .FIRE WEATHER...Thursday and Friday...Isolated to scattered showers and storms (most numerous over the higher terrain) are expected each afternoon and evening. Gusty and erratic outflow winds, small hail, and heavy rainfall remain the main hazards. Winds generally variable 5 to 15 mph, along with near to slightly above normal temperatures. Saturday through Monday...Isolated to scattered showers and storms will continue each afternoon and evening. Gusty and erratic outflow winds, small hail, and heavy rainfall remain the main hazards. Winds generally variable 5 to 15 mph, along with near to slightly above normal temperatures. && .FGZ WATCHES/WARNINGS/ADVISORIES...None. && PUBLIC...BAK AVIATION...Konieczny FIRE WEATHER...BAK For Northern Arizona weather information visit weather.gov/flagstaff
The Flagstaff radar (KFSX), 64 km away, was scanning. The volume nearest the first event began at 23:47 UTC.
3 flash flood. Local standard time, as filed.
A USGS stream gage on the Verde river showed a one foot rise upstream from Camp Verde.
The USGS stream gauge on the Verde Rive downstream of Camp Verde (VCVA3) recorded a 1.68 foot rise from 500 PM to 700 PM. The river returned to normal around 200 AM on the 18th. The heavy rain likely fell over the West Clear Creek drainage.
The USGS stream gauge on the Agua Fira River near Dewey-Humboldt (AFHA3) reported a 2.75 foot rise bettween 700 PM and 745 PM. The river returnred to near normal at 200 AM on the 18th.
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, July 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: 1206099, 1205973, 1206102.