Scattered thunderstorms moved east across Pima and Pinal counties during the afternoon and evening. Storms formed a haboob in Pinal County and caused wind damage in Eloy.
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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 east across Pima and Pinal counties during the afternoon and evening. Storms formed a haboob in Pinal County and caused wind damage in Eloy. Flash flooding was also reported in Chuichu and Picture Rocks. A landspout tornado formed south of Chuichu.
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 Sep 16, 9:15 AM MST, 4 hours 40 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 915 AM MST Mon Sep 16 2019 .SYNOPSIS...Expect scattered showers and thunderstorms this afternoon and evening. Mainly dry conditions to prevail Tuesday into this weekend except for isolated thunderstorms Thursday east of Tucson. Seasonably warm daytime temperatures this week. && .DISCUSSION...Mostly clear skies prevail across southeast Arizona at this time, with mainly few to scattered cirriform clouds moving northeast across the area. A deepening upper trough was moving eastward into the Pacific Northwest this morning. Meanwhile, SPC Mesoscale Analysis depicted a north-to-south axis of 500-1500 J/kg MLCAPE values from just north of Phoenix and across the Tohono O'odham Nation. Various high-resolution models suggest that showers and thunderstorms will develop mostly during the 18Z-21Z period in vicinity of this instability axis, or primarily west of the Tucson metro area. Showers and thunderstorms are then progged to move northeastward across portions of the area later this afternoon and this evening. At this time, appears that remaining showers and thunderstorms will dissipate around or shortly after midnight. The inherited official forecast is in outstanding shape and no updates are warranted at this time. Please refer to the additional sections for further detail. && .AVIATION...Valid through 17/18Z. Scattered -TSRA/-SHRA developing KTUS vicinity westward around 18Z- 21Z. Scattered -TSRA/-SHRA moving eastward late this afternoon into this evening before dissipating east of KTUS and closer to New Mexico state line 06Z-12Z Tuesday. Dry conditions rest of Tuesday morning. Otherwise, cloud decks becoming mainly 10k-15k ft MSL early this afternoon and continuing into this evening. Clouds dissipating late tonight. Surface wind variable in direction mainly under 12 kts through valid period. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Scattered thunderstorms developing mainly west of Tucson early this afternoon before moving eastward across portions of the area into this evening. Any thunderstorms ending by daybreak Tuesday. Mainly dry conditions Tuesday into this weekend except for isolated thunderstorms Thursday east of Tucson. Light terrain driven winds to prevail except for breezier conditions on Thursday afternoon across western Pima County. && .PREV DISCUSSION /343 AM MST/...Clear across most of the area early this morning with the area in between weather systems. Mainly high level cloud cover was moving over western Pima county as of this writing out in advance of a upper level trof that was off the PacNW. Adequate moisture around today for isolated to scattered showers and thunderstorms, a few that may briefly become severe, especially west and north of Tucson later this afternoon into early this evening. Although there will be isolated heavy rainers, flash flooding on the low end due to fast movement of storms. Drier air moving across the area on Tuesday as above mentioned upper trof moves by to the north. Enough lingering moisture around for a slight chance of storms, mainly near the mountains, south and east of Tucson. Slight chance of afternoon storm mainly over eastern areas on Wednesday as southwest flow aloft starts to increase again as another Pacific trof enters the PacNW. As this trof moves inland on Thursday it will pick up some moisture from the south for a slight increase in storm chances east of Tucson. Drier westerly flow over the area Friday into the upcoming weekend. Much uncertainty in the later part of the weekend into early next week with respects to tropical moisture moving across the area with GFS much wetter than ECMWF. At this time went with slight chance of showers/storms on Monday. High temperatures generally around normal during the next 7 days. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
Special Weather Statement National Weather Service Tucson AZ 1112 AM MST Mon Sep 16 2019 AZZ502>504-515-161900- Tohono O'odham Nation including Sells-Upper Santa Cruz River and Altar Valleys including Nogales-Baboquivari Mountains including Kitt Peak-Tucson Metro Area including Tucson/Green Valley/Marana/Vail- 1112 AM MST Mon Sep 16 2019 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PIMA COUNTY UNTIL NOON MST... At 1111 AM MST, Doppler radar was tracking a strong thunderstorm 9 miles southwest of Three Points, or 25 miles northwest of Green Valley, moving northeast at 5 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Three Points and San Pedro. 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 3175 11150 3206 11155 3219 11124 3185 11124 TIME...MOT...LOC 1811Z 240DEG 6KT 3199 11141 Zell
Special Weather Statement National Weather Service Tucson AZ 1257 PM MST Mon Sep 16 2019 AZZ503-504-513-162045- 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- 1257 PM MST Mon Sep 16 2019 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PIMA AND NORTH CENTRAL SANTA CRUZ COUNTIES UNTIL 145 PM MST... At 1256 PM MST, Doppler radar was tracking a strong thunderstorm near Tubac, moving east at 10 mph. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Sahuarita, Green Valley, Tubac, Rio Rico, Patagonia Lake State Park, Tumacacori, Amado, Madera Canyon and Arivaca Junction. 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 3145 11113 3181 11123 3190 11092 3147 11079 TIME...MOT...LOC 1956Z 251DEG 9KT 3155 11108 RH
Special Weather Statement National Weather Service Tucson AZ 139 PM MST Mon Sep 16 2019 AZZ505-162130- South Central Pinal County including Eloy/Picacho Peak State Park- 139 PM MST Mon Sep 16 2019 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PINAL COUNTY UNTIL 230 PM MST... At 138 PM MST, Doppler radar was tracking a line of strong thunderstorms near Red Rock and Picacho Peak State Park, or 14 miles northwest of Marana, moving northeast at 10 mph. Winds in excess of 40 mph and blowing dust will be possible with these storms. Locations impacted include... Eloy, Picacho, Picacho Peak State Park and Red Rock. LAT...LON 3251 11137 3273 11165 3284 11151 3251 11120 TIME...MOT...LOC 2038Z 235DEG 7KT 3257 11135 Zell
The Phoenix radar (KIWA), 67 km away, was scanning. The volume nearest the first event began at 20:56 UTC.
2 flash flood, 1 tornado, 1 dust storm, 1 thunderstorm wind. Local standard time, as filed.
Landspout tornado developed in remote terrain to the south of Chuichu ahead of developing thunderstorms.
Wall of dust moved through south central Pinal County and reduced visibility to less than a quarter mile in the Eloy area.
Thunderstorm winds caused damage in Eloy. The sheet metal roof and a wall of a tire shop was blown off near Sunshine Blvd and Frontier St. and a nearby power pole was damaged. A tree was blown onto power lines near 5th and D streets and an empty semi trailer was blown on its side near Santa Cruz Ave. and 1st St.
Flash flooding occurred in the Chuichu area.
Flash flooding caused the road to become impassable at Dead Man's Corner in Picture Rocks.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2019Every state in 2019This day in weather historyThe tornado archive for Arizona, 2019Warnings in Arizona, September 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: 857022, 857027, 857021, 857024, 857025.