Severe Thunderstorm Warning — Maricopa, AZ; Pinal, AZ was recorded by Global Incident Tracker on Tuesday, 15 September 2026 at 03:07 UTC. The event is classified as a storm incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).

Severe Thunderstorm Warning issued September 14 at 8:07PM MST until September 14 at 8:30PM MST by NWS Phoenix AZ SVRPSR The National Weather Service in Phoenix has issued a * Severe Thunderstorm Warning for... Maricopa County in south central Arizona... Pinal County in southeastern Arizona... * Until 830 PM MST. * At 807 PM MST, a severe thunderstorm was located over Usery Mountain Park, or near East Mesa, moving northeast at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Mesa, Apache Junction, East Mesa, Saguaro Lake, Superstition Mountains, Falcon Field Airport, Lost Dutchman State Park, Goldfield, Usery Mountain Park, Superstition Springs Mall, and Salt River Tubing Recreation Area. This includes the following highways... US Highway 60 between mile markers 188 and 197. AZ Route

Where this happened

The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.

Approximate coordinates of the reported event are 33.436°, -111.610°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.

Understanding storm events

Severe thunderstorms, windstorms, hail and winter storms. Severe storms combine wind, lightning, hail and sudden downpours. Secondary effects — falling trees, power line damage and flash flooding on roads — cause the majority of injuries.

How severity is rated

Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.

Safety guidance for storm situations

  • Move indoors and away from windows; avoid sheltering under trees.
  • Unplug sensitive electronics and avoid using wired equipment during lightning.
  • Assume every downed power line is live and keep well clear.
  • Do not drive through flooded underpasses.
  • Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.

Data and verification

This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.

Keep watching the situation on our live world incident map, browse every storms we track on the Storm tracker, or see today's global picture on the incidents today page.

Timeline and sources

Official warning

Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.

How statuses are decided · the number of reports is never treated as confirmation.

  1. · received · event time 15 Sep 2026, 03:07 UTC
    First report Official warning

    First recorded from U.S. National Weather Service.

    U.S. National Weather Service ↗

  2. · received · event time 15 Sep 2026, 03:18 UTC
    Also reported Official warning

    Also reported by U.S. National Weather Service: "Severe Thunderstorm Warning — Maricopa, AZ; Pinal, AZ"

    U.S. National Weather Service ↗

Times are when this site received each report, in UTC; the event time is shown where the source gave one. 2 reports are attached to this incident. Copies of one syndicated story count as one report.

Conditions at the time

0.4mm
Rainfall that day
41°C
Maximum temperature
26°C
Minimum temperature
32km/h
Peak wind speed

Light rain of 0.4 mm was recorded, and the temperature peaked at 41°C, and winds reached 32 km/h. Conditions are shown for context only — they do not establish a cause.

Weather reanalysis for this location and date via Open-Meteo.