Alert archive / Arizona / Mesoscale Discussions
Mesoscale Discussions in Arizona, 2009
15 mesoscale discussions in 2009. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Mesoscale Discussions
- 15
- Busiest month
- August4 mesoscale discussions
- Busiest day
- October 20, 20092 mesoscale discussions
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 4:03 PM MST | Mesoscale Discussion | SPC | Coconino, Gila, Yavapai | 6 hr |
| Feb 9, 11:03 PM MST | Mesoscale Discussion | SPC | Gila, Graham, Greenlee | 3 hr |
| Jun 29, 4:41 PM MST | Mesoscale Discussion | SPC | Maricopa, Pima, Pinal, Santa Cruz | 2 hr |
| Jun 30, 5:10 PM MST | Mesoscale Discussion | SPC | Gila, Graham, Maricopa, Pinal | 65 min |
| Jul 3, 3:45 PM MST | Mesoscale Discussion | SPC | Gila, Mohave, Pinal, Yavapai | 60 min |
| Jul 17, 3:35 PM MST | Mesoscale Discussion | SPC | Gila, Graham, Greenlee, Pinal | 85 min |
| Aug 21, 3:10 PM MST | Mesoscale Discussion | SPC | Cochise, Graham, La Paz, Maricopa, Pima, Pinal and 2 more | 65 min |
| Aug 21, 7:28 PM MST | Mesoscale Discussion | SPC | La Paz, Maricopa, Yavapai, Yuma | 92 min |
| Aug 23, 12:26 PM MST | Mesoscale Discussion | SPC | La Paz, Mohave | 2 hr |
| Aug 23, 6:47 PM MST | Mesoscale Discussion | SPC | La Paz, Mohave | 88 min |
| Sep 17, 1:59 PM MST | Mesoscale Discussion | SPC | Graham | 91 min |
| Oct 20, 9:30 AM MST | Mesoscale Discussion | SPC | Cochise, Graham, Greenlee | 2 hr |
| Oct 20, 1:33 PM MST | Mesoscale Discussion | SPC | Cochise, Greenlee | 87 min |
| Dec 7, 12:00 PM MST | Mesoscale Discussion | SPC | Mohave | 5 hr |
| Dec 7, 10:48 PM MST | Mesoscale Discussion | SPC | Maricopa | 117 min |
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.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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. Warning verification from the Mesonet's Cow. Rebuilt daily.