Tornadoes · United States · Arizona · 2025

Unrated tornado, Sahuarita, Arizona, September 16, 2025

This Unrated tornado ran 0.0 miles across Pima County on September 16, 2025, touching down at 4:25 PM MST and reaching 1 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unratedthis tornado

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
Unrated
Date
September 16, 2025
Touchdown
4:25 PM MST (23:25 UTC)
Lifted
4:30 PM MST (23:30 UTC)
On the ground
5 minutes
Path length
0.0 miles (0.0 km)
Path width
1 yards (1 m)
Deaths
0
Injuries
0
County
Pima County
Touchdown point
31.970, -110.903
Lift-off point
31.970, -110.903
Record number
2509161725-01

What the Weather Service recorded

A landspout tornado was spotted near Sahuarita, AZ. The tornado caused no damage or injury. The time and location of the tornado was estimated by radar. The landspout tornado was left unrated due to the remote location and would be difficult to survey.

Multiple photos and videos of a landspout tornado spotted near Sahuarita, AZ. The tornado caused no damage or injury. The time and location of the tornado was estimated by radar. The landspout tornado was left unrated due to the remote location and would be difficult to survey.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
22:39 UTC01:45 UTCFlood AdvisoryTWC
23:36 UTC01:30 UTCFlash Flood WarningTWC
23:57 UTC02:00 UTCFlood AdvisoryTWC
00:45 UTC01:00 UTCFlood AdvisoryTWC
01:00 UTC03:00 UTCFlash Flood WarningTWC

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a General Thunderstorms Risk. The outlook in force was issued at 20:00 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Tuscon, AZ (KTUS), 00:00Z

0.6 hours after it, 22 km from the path. September 17, 2025.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 2025-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 54 joules per kilogram, CIN -14, lifted condensation level 2876 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Tuscon, AZ at 00:00Z on 2025-09-17The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -59 square meters per square second, 0 to 6 km bulk shear 8 knots.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
54 J/kg
Mixed-layer CIN
-14 J/kg
Surface CAPE
324 J/kg
Mixed-layer LCL
2876 m above ground
0-6 km bulk shear
8 kt
0-1 km bulk shear
12 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0
0-3 km lapse rate
10.0 K/km

Open this sounding in Storm Lab

The surface observations

Tucson International Airport (TUS), 17 km from the path, in the two hours either side.

Time (UTC)Temp (°F)Dew point (°F)WindGust (kt)Pressure (mb)Weather
21:25 UTC310° 4 kt1014.6
21:30 UTC280° 5 kt1014.6
21:35 UTC330° 8 kt1014.6
21:40 UTC360° 5 kt1014.6
21:45 UTC 1014.6
21:50 UTC330° 7 kt1014.2
21:53 UTC9853360° 5 kt1014.2
21:55 UTC50° 2 kt1014.2
22:00 UTC 1014.2
22:05 UTC290° 8 kt1014.2
22:10 UTC290° 5 kt1014.2
22:15 UTC280° 8 kt1014.2
22:20 UTC 1013.9
22:25 UTC280° 7 kt1013.9
22:30 UTC280° 7 kt1013.9
22:35 UTC250° 4 kt1013.9
22:40 UTC330° 8 kt1013.9
22:41 UTC9752330° 10 kt1013.9VCTS
22:45 UTC320° 5 kt1013.9
22:50 UTC320° 7 kt1013.5
22:53 UTC9652310° 7 kt1013.5VCTS
22:55 UTC270° 2 kt1013.5
23:00 UTC290° 5 kt1013.5
23:05 UTC330° 4 kt1013.9
23:09 UTC95520° 0 kt1014.2
23:10 UTC 1014.2
23:15 UTC80° 14 kt191014.2
23:20 UTC80° 15 kt1014.2
23:21 UTC925580° 14 kt231014.2
23:22 UTC925570° 15 kt231014.2
23:25 UTC70° 15 kt1014.2
23:30 UTC70° 14 kt1014.2
23:33 UTC925480° 13 kt201014.2VCTS
23:35 UTC80° 10 kt1014.2
23:40 UTC80° 13 kt1014.2
23:45 UTC 1014.2
23:50 UTC89.657.290° 17 kt261014.2TS
23:50 UTC 231014.2
23:53 UTC8858100° 18 kt261014.2TS
23:55 UTC 241014.2
00:00 UTC 211014.6
00:05 UTC 1014.9
00:10 UTC 341014.9
00:15 UTC 271014.9
00:20 UTC130° 16 kt201014.9
00:25 UTC 221014.6HZ
00:30 UTC 1014.6HZ
00:35 UTC110° 10 kt1014.6
00:40 UTC 221014.9
00:45 UTC 261014.9
00:50 UTC 16 kt201014.9
00:53 UTC8754150° 16 kt271014.9VCTS
00:55 UTC 1014.9
01:00 UTC 1014.9
01:05 UTC 241014.9
01:10 UTC 1015.2
01:15 UTC 201015.2
01:20 UTC 1015.2

From the Iowa Environmental Mesonet's archive of airport observations.

The radar

The Tucson radar (KEMX), 27 km away, was scanning. The volume nearest the touchdown began at 23:26 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

This ground now

The live radar over the trackEvery 2025 tornado in ArizonaEvery tornado in Arizona since 1950Warnings in force in Arizona nowThe forecast where you are

The other tornadoes of September 16, 2025

1 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
September 164:11 PM MDTUnratedKit Carson, CO0.050

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.