Scattered thunderstorms moved slowly west across southeast Arizona. One storm produced flash flooding on the Burro Fire burn scar.
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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 TWC wrote it up.
Scattered thunderstorms moved slowly west across southeast Arizona. One storm produced flash flooding on the Burro Fire burn scar.
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 Tucson, AZ wrote its last area forecast discussion before the first event at Jul 9, 9:34 AM MST, 5 hours 26 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 934 AM MST Sun Jul 9 2017 .SYNOPSIS...A big jump in our moisture will bring some strong thunderstorms to the area this afternoon and evening. Otherwise, plenty of moisture for afternoon and evening thunderstorms with a favorable pattern for storm development most days this week. The increase in moisture and rain chances will also result in more seasonable temperature readings. && .DISCUSSION...The 12Z KTWC sounding is a beauty, with precipitable water up to 1.45 inches, and plenty of easily accessible convective potential. Should be an above average monsoon afternoon and evening, complete with decent valley coverages and organized outflows. We will put up an 18z sounding to check our progress and decide if we want to request satellite rapid scan for the mid afternoon to early evening period. Latest HRRR and WRF trends suggest strong storms, especially from Tucson Metro westward this afternoon. Then a possible follow-up off the Mogollon Rim this evening. && .AVIATION...Valid thru 10/18Z. Scattered -TSRA/-SHRA developing near mountains by early this afternoon, then scattered valley and numerous mountain -TSRA/-SHRA area-wide late this afternoon into this evening. MVFR conditions with gusts near 45 kts with the stronger TSRA. Otherwise, VFR conditions with surface wind wly/nwly 8-18 kts. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...We'll see enough moisture for scattered mainly afternoon and evening thunderstorms through the upcoming week. Expect brief strong, gusty and erratic winds due to thunderstorm outflows. Otherwise, 20- foot winds will generally be terrain driven at less than 15 mph. Occasional gusts will occur during the afternoon hours due to daytime heating. Higher min RH values with good overnight recoveries. High temperatures will be close to seasonal normals this week. && .PREV DISCUSSION...It appeared that the deeper moisture needed to support more widespread shower and thunderstorm activity had arrived. Surface dew points were in the mid 50 to mid 60s across southeast Arizona early this morning which was a good sign for rain chances. Latest models keep the upper high centered north the area which will maintain a deep easterly flow and fetch of moisture. That said, rain chances looked pretty good for most of the area through the week. This increase in moisture along with the potential for more widespread shower and thunderstorm activity will keep high temperatures near seasonable readings this week. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Meyer Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
Special Weather Statement National Weather Service Tucson AZ 1204 PM MST SUN JUL 9 2017 AZZ503-504-507-513-091945- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon-Upper Santa Cruz River and Altar Valleys including Nogales-Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 1204 PM MST SUN JUL 9 2017 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL PIMA AND NORTH CENTRAL SANTA CRUZ COUNTIES UNTIL 1245 PM MST... At 1203 PM MST, National Weather Service meteorologists were tracking a strong thunderstorm 18 miles southeast of Green Valley, moving northwest at 15 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Green Valley, Sahuarita, East Sahuarita, Amado, Sonoita, Madera Canyon and Arivaca Junction. LAT...LON 3168 11062 3156 11078 3174 11115 3198 11085 TIME...MOT...LOC 1903Z 140DEG 13KT 3168 11076 French
Special Weather Statement
National Weather Service Tucson AZ
1240 PM MST SUN JUL 9 2017
AZZ508-512-092045-
Chiricahua Mountains including Chiricahua National Monument-Eastern
Cochise County Below 5000 Feet including Douglas/Willcox-
1240 PM MST SUN JUL 9 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN COCHISE COUNTY UNTIL
145 PM MST...
At 1239 PM MST, Doppler radar was tracking a strong thunderstorm 16
miles northeast of Douglas, moving west at 15 mph.
Half inch hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Douglas, Mcneal, Bisbee-Douglas Airport and Pirtleville.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
LAT...LON 3162 10968 3154 10921 3136 10922 3133 10947
3134 10966
TIME...MOT...LOC 1939Z 092DEG 15KT 3146 10931
MeyerSpecial Weather Statement National Weather Service Tucson AZ 212 PM MST SUN JUL 9 2017 AZZ507-513-092200- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon- 212 PM MST SUN JUL 9 2017 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN COCHISE COUNTY... At 211 PM MST, a strong thunderstorm was located near Sierra Vista Southeast, or 11 miles south of Sierra Vista, moving west at 15 mph. Wind gusts up to 50 mph and pea size hail are possible with this storm. Locations impacted include... Sierra Vista, Sierra Vista Southeast, Palominas, Coronado National Memorial, Hereford, Nicksville, Parker Canyon Lake and Ramsey Canyon Preserve. LAT...LON 3157 11046 3145 10997 3133 11001 3133 11046 TIME...MOT...LOC 2111Z 101DEG 11KT 3140 11022 French
The Tucson radar (KEMX), 57 km away, was scanning. The volume nearest the first event began at 21:57 UTC.
1 flash flood. Local standard time, as filed.
Between 1 and 1.5 inches of rain on the Burro Fire burn scar caused flash flooding near Rose Canyon and Scout Ranch.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2017Every state in 2017This day in weather historyWarnings in Arizona, July 2017
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: 707653.