A severe thunderstorm formed and moved westward into Lukeville, AZ. The severe thunderstorm wind caused damage to equipment that caused the loss of power to 56 customers for an unknown duration of time.
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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.
A severe thunderstorm formed and moved westward into Lukeville, AZ. The severe thunderstorm wind caused damage to equipment that caused the loss of power to 56 customers for an unknown duration of time.
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 Aug 24, 1:56 PM MST, 30 minutes earlier.
Area Forecast Discussion National Weather Service Tucson AZ 156 PM MST Sun Aug 24 2025 .SYNOPSIS...Shower and thunderstorm chances continue west of Tucson today, then expand to the remainder of southeast Arizona starting Monday. Expect daily chances for showers and thunderstorms with day to day variability on coverage and intensity through mid week with a drying trend later in the week. Above normal temperatures through Monday then trending down to slightly below normal Tuesday through Thursday. An Extreme Heat Warning in effect until this evening for the greater Tucson area to southeastern Pinal county. && .DISCUSSION...Latest visible satellite imagery shows mostly clear to partly cloudy skies east of Tucson and partly cloudy skies west of Tucson. Scattered showers and thunderstorms have started forming in the past hour or so across central and western Pima County and this is the focus area for today as PWAT values range in the 1.25 inch to 1.5 inch range with MLCAPEs of 1000-1500 J/KG DCAPEs 1500-2000 J/KG. Expect a few strong to potentially severe thunderstorms across the western deserts this afternoon into early evening with strong winds the main concern. Areas of locally heavy rain will also occur with the strongest storms. Otherwise, the rest of the forecast area should remain dry into the early evening. However, as additional moisture filters in from the south and west, there is the potential for some overnight into early morning showers and thunderstorms, especially across western Pima County where the combination of higher moisture levels and lift on the north side of an upper level trough may aid nocturnal and early morning activity. The HRRR has been consistent showing this scearnio for numerous runs now so it's something we'll be watching through the evening. Monday is shaping up to be an active day across our forecast area as deeper moisture will continue to spread to the north and east and the area will still be on the north (leading) side of an upper level trough across Sonora. With PWATs increasing to 1.2 to 1.7 inches for central and western portions of the forecast area (Pima, Pinal, Santa Cruz Counties), this will result in MLCAPE values of 1000-1500 J/KG. The combination of the moisture and instability with lifting from the trough will result in more widespread convection. The highest confidence for storms is to the south and west of Tucson with a bit lower confidence in Tucson/eastern Pima County and points eastward. Note that locales close the NM border will remain mostly dry with less moisture out that way. Storms should initiate generally across Santa Cruz and south central Pima County then move to the west and northwest with outflows helping kick off new storms. Expect both severe wind and localized flash flood threats Monday. Per coordination with SPC and WPC, WPC has placed portions our of area in SLGT risk for Excessive Rainfall on Monday (and Tuesday) with the SPC highlighting a MRGL risk for severe thunderstorms (wind) from Tucson south and westward. Decided against hoisting any flood watch headlines at this time as confidence on widespread flash flooding still a bit low. Tuesday will be highly dependent on what happens Monday. There will still be well above normal moisture across our forecast area with upper level troughing pushing through in the southerly flow aloft. The focus on Tuesday might end up shifting to areas generally east of Tucson which aren't expected to get as much on Monday. Drier southwest flow aloft will start to move in on Wednesday and this should help dimnish areal coverage of activity. Current PoPs are in the 30 to 40 percent range but if the drying trends continue we, we'll have to continue to lower them even more. This drying trend should tend to hold Thursday through Saturday for most of the forecast area (except possibly SE Cochise County) before additional moisture tries to work back in later next weekend. Temperatures will lower to seasonal normal levels Monday and then drop to below normal Tuesday through Thursday before warming back up to several degrees above normal next weekend. && .AVIATION...Valid through 26/00Z. SCT-BKN 9k-12k ft AGL. Widely scattered -SHRA/-TSRA west of KTUS btwn thru 25/03z then isolated -SHRA/-TSRA thru 25/18Z. Aft 25/18Z scattered-numerous SHRA/TSRA from KOLS/KTUS westward. Expect gusty and erratic winds with any TSRA otrw SFC winds will generally be E- SE less than 12 kts through 25/18Z. Thereafter, sfc winds mainly WLY/NWLY with the exception of locales near the NM border. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...Expect daily chances for rain showers and thunderstorms through mid week with diminishing chances later in the week into next weekend. Temperatures will be running above normal again this afternoon with an Extreme Heat Warning in effect for the lower elevations. Winds will generally remain less than 15 mph with the afternoon gustiness this week. Min RHs will be 15-20 percent in the low elevations and 20-30 percent in the mountains through the weekend. Deep monsoon moisture early this week to provide higher wetting rain chances and coverage as well as better min RHs and below normal temperatures. && .TWC WATCHES/WARNINGS/ADVISORIES... Extreme Heat Warning until 8 PM MST this evening for AZZ504>506. && Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
The Yuma radar (KYUX), 186 km away, was scanning. The volume nearest the first event began at 21:25 UTC.
1 thunderstorm wind. Local standard time, as filed.
Severe thunderstorm winds caused the loss of power to 56 customers from the International border to Puerto Blanco Rd for an unknown duration of time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2025Every state in 2025This day in weather historyWarnings in Arizona, August 2025
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: 1291710.