Live from the National Weather Service

Arizona Storm Alerts

Active National Weather Service hail, wind, thunderstorm, tornado, tropical and winter storm alerts covering Arizona, with the counties each one names and the office that issued it — plus what the state’s severe-weather season looks like and how each of these events actually damages a roof.

Below that, in its own lane, the smoke and fire family: fire weather, dense smoke, air quality, blowing dust and volcanic ashfall.

0 active alerts · read from the National Weather Service at Aug 26, 1:54 AM EDT · refreshed every 10 minutes

This page is informational and is not a safety resource. It exists to show roofing professionals where storm damage has been reported, and it is refreshed on a ten-minute cycle, so it can lag the Weather Service.

During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Active storm alerts in Arizona

Reproduced exactly as the National Weather Service issued them. Alerts frequently cross state lines, so a county list may name counties in a neighbouring state. Smoke and fire alerts are reported separately, in their own lane below.

No active alerts

The National Weather Service has no active hail, wind, thunderstorm, tornado, tropical or winter storm alerts covering Arizona as of this refresh. This is the normal state most days, and this page fills itself the moment NWS issues something.

Radar over Arizona

Straight from radar.weather.gov and regenerated by NOAA roughly every two minutes.

National Weather Service radar for the Southern Rockies and Desert Southwest, covering Arizona and New Mexico, with southern Colorado and West Texas. — Where precipitation is falling over Arizona right now. The National Weather Service publishes these mosaics by region rather than by state, so the frame runs past the state line and neighbouring states are visible in it. Radar shows precipitation, not damage — a return over a county is not evidence that any particular building was hit.
Radar imagery: the National Weather Service. Served directly from radar.weather.gov, a free US Government service, and regenerated by NOAA roughly every two minutes — your browser picks up new frames on its own. This site does not process, re-colour or re-time the imagery; it is the Weather Service’s own mosaic, unmodified. weather.gov
This radar is informational and is not a safety resource. During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Smoke & fire lane

Smoke & fire alerts in Arizona

The National Weather Service issues a separate family of alerts for fire weather, dense smoke, air quality, blowing dust and volcanic ashfall. This lane reports that family for Arizona, kept apart from the storm alerts above because the two answer different questions.

Wildfire smoke is what drives smoke-damage losses, and it reaches a building through the same vents that keep an attic dry — which is why it belongs on a roofing page at all. Alerts describing particulate already in the air are listed ahead of fire-weather forecasts; that ordering is this lane’s own and is not a Weather Service ranking.

1 active smoke or fire alert · read from the National Weather Service at Aug 26, 1:54 AM EDT · refreshed every 10 minutes

Air Quality Alert

Air qualityUnknownUrgencyUnknownCertaintyUnknown

Issued by NWS Phoenix AZ

In effect from Aug 25, 9:17 AM local · until Aug 26, 9:00 PM local

Counties named in this alert

Maricopa, AZ

Read the full National Weather Service text

NWS headline

Air Quality Alert issued August 25 at 9:17AM MST by NWS Phoenix AZ

NWS description

AQAPSR The Arizona Department of Environmental Quality (ADEQ) has extended an Ozone High Pollution Advisory for the Phoenix Metro Area through Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment should be reduced or done late in the day. For details on this High Pollution Advisory, visit the ADEQ internet site at www.azdeq.gov/forecast/phoenix or call 602-771-2300.

View this alert on weather.gov

The 12 alert types this lane reports

Every one is a National Weather Service product and is listed under the name the Weather Service gives it. Grouping them into families is ours; the names are not.

Fire weather: Fire WarningExtreme Fire DangerRed Flag WarningFire Weather Watch
Dense smoke: Dense Smoke Advisory
Air quality: Air Quality Alert
Blowing dust: Blowing Dust WarningDust Storm WarningBlowing Dust AdvisoryDust Advisory
Volcanic ashfall: Ashfall WarningAshfall Advisory

The Weather Service defines each of these products and this site does not attempt to. What any one of them means, and the criteria an office issues it under, are at weather.gov.

This lane is informational and is not a safety resource. It reports which National Weather Service smoke and fire alerts are active and where, on a ten-minute refresh cycle, so it can lag the Weather Service.

During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Smoke exposure and air quality are health matters, and this page does not address them. It does not tell you whether it is safe to be outdoors or to work, what an air quality index number means for you or for anyone in your household, or what respiratory protection to use. Those questions belong with a clinician and with the agency that issued the alert. The federal air-quality authority is airnow.gov.

What smoke does to a roof assembly

An active alert is a record of conditions, not a finding about any building. These are the standing references on the building-assembly side of a smoke or fire loss.

Smoke odor in roof decking and attic insulationWhy odour outlives the visible repairs — deposition into bare decking and framing, insulation acting as a reservoir, and the difference between cleaning, sealing and removing. The article that covers wildfire smoke reaching an attic through the vents, with the roof itself untouched.Fire damage to a roof assemblyDirect flame against radiant heat, shingle distortion and mat delamination, charred sheathing and loss of section, and why a roof that looks intact from the ground can still be condemned.Roof replacement after a fireHow the repair-or-replace decision is built on a fire loss: partial against full deck replacement, the boundary between charred and heat-affected wood, matching, and the code upgrades a repair can trigger.Ventilation holes and fire department roof damageFire crews cut the roof on purpose. What vertical ventilation is for, how tactical damage is separated from fire damage in a scope, and what an opened deck needs in the meantime.Smoke Mitigation Network — directory listingLaboratory smoke damage testing and documentation, listed under Restoration & Mitigation → Smoke Damage Testing & Assessment. Whether a building is contaminated is established by sampling rather than by looking at it. The listing discloses that it shares ownership with this directory.

Severe weather season in Arizona

Peak season

June–September (monsoon)

Arizona’s damaging weather is concentrated in the North American monsoon, when thunderstorms collapse and send strong outflow winds and blowing dust well ahead of the rain. Those outflow gusts, rather than hail, are what lift roof coverings across most of the state. The high country adds a separate winter season, where the concern shifts to snow loading rather than wind.

Seasons describe a pattern, not a schedule. The National Weather Service issues these products year-round, and the live list above is the only authority on what is actually running in Arizona right now.

What NOAA has recorded in Arizona

The archived record, not the live feed. Severe weather logged by the National Centers for Environmental Information over the covered years, split into the events NOAA keys to a county and the events it keys to a forecast zone.

Between 2016 and 2026, NOAA recorded 1,921 county-level severe-weather events across Arizona: 1,510 thunderstorm wind events, 351 hail reports and 60 tornadoes. Of the 351 hail reports carrying a measured size, 267 were 1.00 in across or larger.

A further 973 events over the same period were recorded against National Weather Service forecast zones rather than counties — 468 high wind events, 382 heavy snow events, 72 winter storms, 50 strong wind events and 1 ice storm. A forecast zone is not a county: it can span several or subdivide one, so these are reported here at state level and appear in no county total on this site.

County-keyed events

1,921

2016–2026

Zone-keyed events

973

statewide, not county-attributable

Hail 1.00 in or larger

267

of 351 sized hail reports

Tornadoes

in the county record

Counties with the heaviest record

Ranked by the number of county-keyed events NOAA recorded, 2016–2026. 15 of Arizona’s counties carry a record in this dataset.

Maricopa County770largest hail 2.00 in (Baseball) · peak gust 87 kt (about 100 mph)
Pima County289largest hail 1.75 in (Golf Ball) · peak gust 69 kt (about 79 mph)
Pinal County178largest hail 2.00 in (Baseball) · peak gust 70 kt (about 81 mph)
Mohave County131largest hail 1.75 in (Golf Ball) · peak gust 73 kt (about 84 mph)
Cochise County116largest hail 2.00 in (Baseball) · peak gust 79 kt (about 91 mph)
Yavapai County108largest hail 1.75 in (Golf Ball) · peak gust 72 kt (about 83 mph)
Yuma County69largest hail 1.00 in (Quarter - Half Dollar) · peak gust 70 kt (about 81 mph)
Coconino County50largest hail 2.50 in (Baseball) · peak gust 61 kt (about 70 mph)

Preliminary — not yet in the permanent archive

256 further preliminary storm reports have been filed against Arizona counties since June 1, 2026. They are counted separately from every archived figure above and are not added to any of them.

Preliminary reports covering 2026-05-31 onward come from National Weather Service storm reports filed as events occur. They have not yet been through the quality-control review that produces the permanent archive, and individual reports may later be revised, combined or withdrawn.

County figures and state figures. County figures count events NOAA recorded against a county (hail, thunderstorm wind and tornadoes). High wind, winter storms, ice storms, blizzards, heavy snow, hurricanes and tropical storms are recorded against National Weather Service forecast zones rather than counties, so they are reported at state level instead. Counts reflect events that were observed and reported.

Source. Archived figures come from the NOAA National Centers for Environmental Information Storm Events Database, covering 2016 through May 31, 2026. Reports after that date come from NOAA Storm Prediction Center preliminary storm reports. Both are US Government works in the public domain. This is a record of past weather; the live alert list at the top of this page is the only authority on what is running in Arizona now.

What these storms do to a roof

The damage mechanisms that matter in Arizona, in the order they generate work here.

Hail

Hail damages an asphalt shingle in two ways at once. The impact knocks granules off the surface, and it can bruise or fracture the asphalt mat underneath without breaking the surface open. Granules are what shield the asphalt from ultraviolet light, so a roof that has lost them ages faster from that point on. A fractured mat is the reason hail damage is often described as latent: the roof may not leak the week of the storm, and the failure shows up later. On metal panels and metal accessories, hail leaves dents, which raises the separate question of whether the damage is cosmetic or has actually compromised the panel or its coating.

Straight-line wind

Wind damage on a shingle roof usually starts as a broken seal rather than a missing shingle. Uplift pressure is highest at the edges — rakes, eaves, ridges and hips — and along any line where the roof plane changes, so that is where tabs lift and the factory sealant strip lets go first. Once the seal is broken, a shingle that still looks fine from the ground is no longer bonded to the course below it and every later wind event works on the same spot. Wind also drives debris, and impact damage from a branch or from another roof’s material is a separate mechanism from uplift.

Snow load and winter storms

Winter loads a roof rather than striking it. Accumulated snow is a sustained weight on the structure, and drifting means the load is rarely spread evenly — it piles against ridges, dormers, valleys and the low side of any change in roof height. Melt-and-refreeze adds the second mechanism: heat escaping through the roof melts snow that then refreezes at the cold eave, and the resulting ice can back water up under the covering, which sheds water flowing downhill but not water standing still.

Why the storm date matters

Property insurance works from a date of loss — a specific storm on a specific day over a specific area, not a general observation that a roof looks worn. That is why the county list and the effective and expiry times on each alert above are the useful part of this page: they are the National Weather Service’s own record that a given event covered a given county at a given time.

It also matters because hail damage is frequently latent. A fractured shingle mat can take a long time to become a leak, so the gap between the storm and the discovery can be considerable — and by then, establishing which storm did it is a records question rather than an observation. An alert naming a county is not evidence that any particular building was damaged; it is evidence of what the weather was doing over that county, which is where an assessment starts rather than where it ends.

Next steps in Arizona

Roofing contractors in ArizonaBrowse the Arizona directory by city and county.Arizona licensing rulesWhether roofers must be licensed here, which board issues it, and the bond and insurance rules.Storm damage roof repair guideHow hail and wind damage is identified, documented and repaired.National storm centerActive alerts across all 50 states and DC, busiest first.

Source: the National Weather Service. Every alert on this page comes from the NWS public alerts feed at api.weather.gov, a free US Government service, and is reproduced as the issuing office wrote it. The office that issued each alert is named on the alert itself.

This site does not edit, summarise or re-grade Weather Service text. Alerts are filtered into two separate lists — the event types that affect roofs, and the smoke, fire and airborne-particulate family — and each list is sorted. Nothing else is changed, and no alert is moved between the two lists to suit a heading.

weather.gov