On November 7, strong southwest winds, associated with a Great Basin upper level trough, occurred ahead of a cold front moving across southeast Arizona. Gusts of 40 to 55 mph caused minor damage.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TWC wrote it up.
On November 7, strong southwest winds, associated with a Great Basin upper level trough, occurred ahead of a cold front moving across southeast Arizona. Gusts of 40 to 55 mph caused minor damage. The winds also produced a dust storm that caused road closures and minor accidents in Pinal County near Picacho.
The national radar mosaic for the moment the first event began.
1 strong wind, 1 dust storm. Local standard time, as filed.
A modest sized tree was blown down in downtown Tucson near 1st St. and Euclid Ave. shortly after the onset of strong winds that occurred much of the day. The tree blocked one lane of traffic on Euclid for a short time.
Southwest winds sustained at 25 to 30 mph with gusts to 40 mph created a dust storm that reduced visibility to less than a quarter mile in south central Pinal County along Interstate 10 from mile posts 213 to 226 and along Highway 87 north of Picacho. State officials ordered the closure of Highway 87 between mile posts 220 and 223, but minor accidents were reported prior to the closure taking affect. No injuries were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2020Every state in 2020This day in weather historyWarnings in Arizona, November 2020
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 928325, 928350.