A thunderstorm produced heavy rain near Chino Valley.
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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 thunderstorm produced heavy rain near Chino Valley.
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 10, 9:43 AM MST, 2 hours 17 minutes earlier.
Area Forecast Discussion National Weather Service Flagstaff AZ 943 AM MST Sat Aug 10 2019 .SYNOPSIS...Monsoon moisture will remain in place through the weekend, with a drying trend beginning next week. There is potential for heavy rain producing thunderstorm complexes to form today and tonight over east-central Arizona. && .UPDATE...Drier air has started to move into western Arizona today with surface dewpoints down into the 30s along the Colorado River out west. Deep moisture remains over southeast and east-central Arizona with Pwats of 1.47 and 1.61 in Tucson and Phoenix. A disturbance over Chihuahua can be seen moving northwest on the water vapor loop this morning. The deep moisture and this disturbance will likely trigger thunderstorms or even thunderstorms complexes with heavy rain this afternoon and tonight in southeast or east-central Arizona. The current forecast generally handles this situation well. No major updates to the forecast planned for today. && .PREV DISCUSSION /440 AM MST/...All eyes on the dynamic inverted trough, currently south of Arizona, for this weekend. The trough is sustaining a couple of MCSs this morning, one south of Arizona and another in southwestern New Mexico. Expect this activity, deeper moisture and the trough to move north-northeast through Sunday, as an upper low over NW California shears out through the northern Great Basin. Battling this moisture is persistent southwest flow to our west, due to the Pacific Coast trough. This flow is responsible for dewpoints in the upper 20s along the Colorado River and sharp drying trend in water vapor imagery over western Arizona. Eventually, the dry southwest flow will win. Before then, central and eastern Arizona will become convectively active the next few days. Nocturnal convection is likely, due to the dynamical nature of the slowly ejecting trough. Deep moisture and cloud cover may hamper convection at times, with precipitation going stratiform. The long time frame where moderate to heavy precipitation is possible does warrant a Flash Flood Watch for our southeastern CWA. By Monday, much drier conditons are anticipated, with warming temperatures. Most precipitation chances will be relegated to the White Mtns for much of next week. && .AVIATION...For the 18Z package...Scattered to numerous SHRA/TSRA southeast of a line from Payson to the Four Corners region (ISOLD MVFR in +TSRA) with ISOLD-SCT -SHRA/TSRA elsewhere through the TAF period. Gusty and erratic winds are likely near thunderstorms. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Monsoon moisture will remain in place with a chance of showers and thunderstorms through Sunday. The greatest potential for a wetting rain today through Sunday will be southeast of a line from Payson to Chinle. Light southwesterly breezes today will become more westerly on Sunday. Monday through Wednesday...Drier air will move over Arizona from the west with decreasing chances of storms each day. Haines values will increase each day through the period. && .FGZ WATCHES/WARNINGS/ADVISORIES...Flash Flood Watch through late tonight for AZZ014-017-018. && PUBLIC...MAS/Peterson AVIATION...MAS FIRE WEATHER...NL For Northern Arizona weather information visit weather.gov/flagstaff
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
A thunderstorm produced 1.60 inches of rain with some nuisance flooding and pea sized hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2019Every state in 2019This day in weather historyWarnings in Arizona, August 2019
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: 848722.