Thunderstorms moved northeast across southeast Arizona from late morning into early evening. One storm produced damaging winds in Marana.
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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.
Thunderstorms moved northeast across southeast Arizona from late morning into early evening. One storm produced damaging winds in Marana.
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 21, 3:53 PM MST, 2 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 353 PM MST Wed Sep 21 2022 .SYNOPSIS...Scattered to numerous showers and storms will continue today with a few strong to severe storms and increase risk of flash flooding. Flash Flood Watch remains in effect for southeast Arizona through late this evening. Storms will become more isolated Friday and Saturday before dry conditions return Sunday. && .DISCUSSION...The western half of Pima County has been experiencing the brunt of the thunderstorms this afternoon. The PWATs from the 12z sounding has 1.89in and the atmospheric profile indicates a tropical influence. This moisture profile is mirroring the temperature profile from the 700mb to the 400mb, and it has an onion shape in the lower profile which can result in several wet microbursts this afternoon. Very saturated, good shear, and great upper diffluence to keep storms developing in the area through the early night. It is not surprising on how storms have been training from the southern edge of our CWA due to the upper flow bringing deep moisture from Baja California. Training storms can bring more rain and can cause significant flooding to areas. WPC has elevated our Excess Rainfall Outlook for the rest of the day with the Tucson west under Moderate Risk. As for the rest of the CWA, storms will start to spread a little more east to bring showers and thunderstorms tonight. A Flash Flood Watch is still in effect through 11pm. Tomorrow, the synoptic pattern will shift into a westerly flow and drying our area out. Yet, we can expect afternoon thunderstorms and showers from daytime heating and enough left over moisture from today's round of storms. Over the weekend, the 500mb ridge will move over the region to bring a warmer temperatures for the end of the month. && .AVIATION...Valid through 23/00z. +TSRA/SHRA around KOLS/KTUS continues through the late evening hours and becoming more of SHRA/VCSH through 22/06Z. Ceilings can briefly drop down to MVFR conditions from TSRA/SHRA. Surface winds remain near 10 kts or less, with gusty outflow winds possible with SHRA/TSRA of 30kts. Scattered TSRA/SHRA expected tomorrow between 21/20z-22/03z with very brief MVFR possible under heavier showers. Otherwise, FEW-SCT clouds at 5k-9k feet AGL and BKN-OVC clouds at or above 10k feet AGL. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Widespread showers and storms will be present today and tomorrow before beginning a downward trend through the weekend. Isolated strong to severe storms are possible. 20 foot winds will remain less than 15 kts this week favoring the west to northwest each afternoon through the weekend. Near normal temps are expected through the end of the week. && .TWC WATCHES/WARNINGS/ADVISORIES... Flood Watch until 11 PM MST this evening for AZZ501>515. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
Special Weather Statement
National Weather Service Tucson AZ
221 PM MST Wed Sep 21 2022
AZZ502-504-505-212200-
Tohono O'odham Nation including Sells-Tucson Metro Area including
Tucson/Green Valley/Marana/Vail-South Central Pinal County including
Eloy/Picacho Peak State Park-
221 PM MST Wed Sep 21 2022
...A cluster of strong thunderstorms will impact portions of north
central Pima and southwestern Pinal Counties through 300 PM MST...
At 219 PM MST, Doppler radar was tracking strong thunderstorms over
Santa Rosa and Pisinemo, or 28 miles north of Sells, moving north at
15 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Santa Rosa, Pisinemo, Covered Wells, Anegam, North Komelik, Palo
Verde Stand, Ak Chin, No:ligk, Cababi, Sil Nakya, San Luis - Sells
District, Mountain Village, San Luis, Rincon, Santa Rosa School and
Silver Bell.
This includes Route 86 between mile markers 81 and 106.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 3197 11200 3202 11235 3255 11219 3250 11133
TIME...MOT...LOC 2119Z 201DEG 15KT 3231 11201
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
JRMThe Tucson radar (KEMX), 80 km away, was scanning. The volume nearest the first event began at 22:56 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed power lines on Sanders Rd. causing its closure and the lost of power for more than 2000 customers. Winds also downed several Palo Verde trees near Moore Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2022Every state in 2022This day in weather historyWarnings in Arizona, September 2022
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: 1058234.