Alert archive / Arizona

Weather alerts in Arizona, 2011

1,764 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts
1,764
Warnings
674
Watches
122
Advisories
552
Busiest month
August463 alerts
Busiest day
September 10, 201161 alerts

Over time

By month

The alerts

1,764 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning328
Tornado Warning11
Severe Thunderstorm Watch2
Mesoscale Discussion24
Special Weather Statement392
Flooding
Flash Flood Warning153
Flash Flood Watch12
Areal Flood Advisory364
Winter
Winter Storm Warning13
Winter Storm Watch12
Winter Weather Advisory39
Heat
Excessive Heat Warning17
Excessive Heat Watch12
Heat Advisory9
Cold
Freeze Warning14
Hard Freeze Warning8
Wind Chill Warning2
Freeze Watch9
Hard Freeze Watch2
Wind Chill Watch1
Frost Advisory1
Wind and dust
Dust Storm Warning29
High Wind Warning6
High Wind Watch4
Blowing Dust Advisory3
Lake Wind Advisory16
Wind Advisory107
Fire
Red Flag Warning93
Fire Weather Watch68
Fog and smoke
Dense Fog Advisory13

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. September 10, 201161alerts
  2. July 6, 201156alerts
  3. September 11, 201150alerts
  4. September 12, 201147alerts
  5. July 5, 201140alerts
  6. September 14, 201139alerts
  7. August 4, 201136alerts
  8. September 13, 201136alerts
  9. July 25, 201135alerts
  10. July 4, 201133alerts
  11. August 18, 201133alerts
  12. August 28, 201133alerts

Nearby

Alerts in force nowTornadoes on recordThe radar archive20102012

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.