Alert archive / Arizona / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 210, NWS Tucson, AZ

August 21, 2026Santa Cruz County, Arizona

NWS Tucson, AZ issued this severe thunderstorm warning at Aug 21, 2026, 1:34 PM MST for Santa Cruz County, Arizona. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 21, 2026, 1:34 PM MST (20:34 UTC)
Expired: Aug 21, 2026, 2:01 PM MST
In force: 27 min
Issued by: NWS Tucson, AZ
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Santa Cruz County, AZ

The radar

The Tucson radar (KEMX), 46 km from the middle of the area, began a volume at 20:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 8.6 hours before the alert went out and 236 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 621 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 2563 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Aug 21, 10:32 AM MST, 3 hours 2 minutes earlier.

Area forecast discussion, Aug 21, 10:32 AM MST, 3 hours 2 minutes before

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In the hours before

Local storm report, Aug 21, 12:01 PM MST, 1 hour 33 minutes before

Preliminary Local Storm Report
National Weather Service Tucson AZ
1201 PM MST Fri Aug 21 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0655 PM     Tstm Wnd Dmg     6 SSW Tucson            32.13N 110.94W
08/19/2026                   Pima               AZ   Local Official

            Damage to parking structures due to strong
            wind gusts.

&&

MJS

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 21, 12:25 PM MST	Severe Thunderstorm Warning	TWC	Cochise	50 min
Aug 21, 1:30 PM MST	Severe Thunderstorm Warning	TWC	Pima	31 min
Aug 21, 2:27 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	48 min
Aug 21, 3:02 PM MST	Areal Flood Advisory	TWC	Pima	118 min
Aug 21, 3:18 PM MST	Flash Flood Warning	TWC	Pima	5 hr
Aug 21, 4:16 PM MST	Severe Thunderstorm Warning	TWC	Pima, Pinal	44 min
Aug 21, 4:34 PM MST	Dust Storm Advisory	TWC	Pima, Pinal	56 min
Aug 21, 4:41 PM MST	Areal Flood Advisory	TWC	Pima, Pinal	98 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.