Numerous thunderstorms moved southwest across southeast Arizona. One storm near Sells caused wind damage.
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 TWC wrote it up.
Numerous thunderstorms moved southwest across southeast Arizona. One storm near Sells caused wind damage.
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 10, 2:26 PM MST, 3 hours 24 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 226 PM MST Mon Jul 10 2017 .SYNOPSIS...Plenty of moisture for afternoon and evening thunderstorms with a favorable pattern for storm development most days this week. Some storms this afternoon and evening will generate heavy rainfall, especially in the mountains. The increase in moisture and rain chances will also result in more seasonable temperature readings. && .DISCUSSION...Deep moisture is in place with precipitable water values around 1.4 to 1.5 inches on sounding and satellite estimate data. Our weak flow this morning is giving way to a very modest northerly flow which has enhanced outflow from the rim a little more than earlier HRRR resolutions suggested. The main concern is still heavy rain, especially in the mountains. FFW earlier for Mt Graham and portions of the Frye fire area. Valleys will still be at the mercy of outflows, and those outflows are doing pretty well with several cell mergers and the Rim activity. Good potential of better shower and thunderstorm coverage this evening and even overnight as outflows try to merge over Pima and Pinal counties. A strong complex developing in northern Sonora just south of Nogales may end up playing a big part in that. Beyond today and tonight, we will maintain enough moisture and a favorable pattern for daily thunderstorm chances. Nothing special, with mountains favored until later in the week when we will watch an easterly wave currently developing on the southeast periphery of the high move across central to northern Mexico. There's going to be a busy day or two as a result but timing is difficult. At this point Wednesday night and Saturday night into Sunday are looking interesting. && .AVIATION...Valid thru 12/00Z. Isolated to scattered -TSRA/-SHRA mainly E and S of KTUS this into this evening with SCT-BKN clouds 7-11k ft AGL. MVFR conditions and gusts near 40 kts possible with the stronger TSRA. Otherwise, VFR conditions with SFC wind wly/nwly 8-14 kts. A few SHRA may persist overnight with SCT SHRA/TSRA occurring again Tuesday afternoon. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Scattered mainly afternoon and evening thunderstorms will prevail this week, with better chances in the mountains. 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. High temperatures will be close to seasonal normals this week and increased moisture will help moderate relative humidity levels. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Meyer/French Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
Special Weather Statement
National Weather Service Tucson AZ
1229 PM MST MON JUL 10 2017
AZZ509-510-102030-
Upper Gila River and Aravaipa Valleys including Clifton/Safford-White
Mountains of Graham and Greenlee Counties including Hannagan Meadow-
1229 PM MST MON JUL 10 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL GRAHAM AND NORTHERN
GREENLEE COUNTIES UNTIL 130 PM MST...
At 1227 PM MST, Doppler radar was tracking strong thunderstorms
along a line from far northeast Graham through northern Greenlee
county, including the Rose Peak and Hannagan Meadow areas. Movement
was south at 15 to 20 mph.
Half inch hail and winds in excess of 45 mph will be possible with
these storms, along with heavy rain.
Locations impacted include...
Point-Of-Pines, Rose Peak, Blue and Arsenic Tubs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3313 10907 3304 10952 3323 10994 3348 10979
3348 10975 3352 10973 3356 10967 3357 10968
3358 10962 3361 10961 3357 10933 3360 10905
3330 10905
TIME...MOT...LOC 1927Z 017DEG 15KT 3357 10964 3345 10937 3351 10909
MeyerSpecial Weather Statement
National Weather Service Tucson AZ
201 PM MST MON JUL 10 2017
AZZ509-510-102200-
Upper Gila River and Aravaipa Valleys including Clifton/Safford-White
Mountains of Graham and Greenlee Counties including Hannagan Meadow-
201 PM MST MON JUL 10 2017
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL GRAHAM AND CENTRAL
GREENLEE COUNTIES UNTIL 300 PM MST...
At 159 PM MST, Doppler radar was tracking strong thunderstorms along
a line extending from 35 miles east of San Carlos Reservoir to 11
miles northeast of Safford to 7 miles northeast of Morenci. Movement
was south at 20 mph.
Half inch hail and winds in excess of 45 mph will be possible with
these storms. Blowing dust is possible with a gust front in front of
the storms, followed by localized areas of heavy rain.
Locations impacted include...
Safford, Clifton, Morenci, Thatcher, Pima, Fort Thomas and Solomon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy rainfall is also occurring with these storms, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3297 11001 3260 10966 3281 10917 3321 10914
3324 10950 3341 10984
TIME...MOT...LOC 2059Z 009DEG 19KT 3326 10985 3297 10959 3313 10923
MeyerSpecial Weather Statement National Weather Service Tucson AZ 348 PM MST MON JUL 10 2017 AZZ507-508-513-102330- Upper San Pedro River Valley including Sierra Vista/Benson-Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon-Eastern Cochise County Below 5000 Feet including Douglas/Willcox- 348 PM MST MON JUL 10 2017 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL COCHISE COUNTY UNTIL 430 PM MST... At 348 PM MST, Doppler radar was tracking a strong thunderstorm 18 miles southeast of Benson, or 24 miles northeast of Sierra Vista, moving south at 5 mph. Winds in excess of 40 mph and blowing dust will be possible with this storm. Locations impacted include... Tombstone. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3189 11017 3194 10997 3170 10980 3160 11009 TIME...MOT...LOC 2248Z 338DEG 6KT 3182 11003 Cerniglia
Special Weather Statement National Weather Service Tucson AZ 549 PM MST MON JUL 10 2017 AZZ504-507-514-110130- Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven-Upper San Pedro River Valley including Sierra Vista/Benson-Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 549 PM MST MON JUL 10 2017 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL PIMA AND NORTHWESTERN COCHISE COUNTIES UNTIL 630 PM MST... At 548 PM MST, Doppler radar was tracking a strong thunderstorm 16 miles northeast of Tanque Verde, or over Redington, moving south at 20 mph. Winds in excess of 40 mph and blowing dust will be possible with this storm. Locations impacted include... Redington and Cascabel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Heavy rainfall will also occur right under the storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3244 11060 3251 11041 3218 11020 3204 11057 TIME...MOT...LOC 0048Z 345DEG 18KT 3237 11048 Cerniglia
The Tucson radar (KEMX), 34 km away, was scanning. The volume nearest the first event began at 00:49 UTC.
1 heavy rain, 1 lightning, 1 thunderstorm wind. Local standard time, as filed.
Heavy rain caused a rollover accident on Interstate 19 just south of the Duval Mine Road exit. No injuries were reported.
Lightning struck a tree in Green Valley and caught it on fire.
Thunderstorm winds blew roofs off a couple houses and collapsed another. Winds also knocked down several power lines. Sells RAWS measured a gust of 62 mph.
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: 708458, 708459, 708456.