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Tornados in Arizona are relatively weak. Typically, Arizona tornadoes will usually however around an EF-0 ( MPH) to an EF-1 ( MPH). Tornado leaves damage across northern Arizona. In northern Arizona, ten homes were damaged after a tornado ripped through a Coconino County.
Arizona sees damage from tornado, dust storm on Monday – Up to 10 homes were damaged by the AZ tornado, and 82K residents lost power
On October 5—6, , a destructive series of thunderstorms struck Arizona , resulting in the state’s largest tornado outbreak and its costliest weather disaster on record. Spawned by a nearby cold-core low , successive hailstorms in Phoenix and surrounding locations on October 5 caused damage to thousands of homes, businesses, and vehicles. Thunderstorms on both days caused significant flash flooding which inundated businesses, stranded vehicles, and closed roadways.
Some impacts occurred in California, Nevada, and Utah as well as the cold-core remained stationary over several days. In , researchers examined the overlap between large-scale environments responsible for producing tornadoes in Northern Arizona. They utilized 38 days between — that involved the formation of classic supercell thunderstorms and confirmed tornadoes across the state.
Of those 38 days, researchers found a similar meteorological progression in half of them. The overlapping setup involved the approach of a cold-core low and a favorable placement of the warm sector across Arizona.
The approach of these mid- to upper-level lows, detached from the jet stream , allowed for southerly wind vectors to overspread the state. This not only afforded the wind shear necessary for tornadic development, but also provided a supply of warm, moist subtropical air. On October 5, , the dominant pattern across the United States bore resemblance to the setups described in previous research. An omega block existed across the country, so named for its uncharacteristically persistent weather conditions across the country on the scale of days to weeks.
This omega block was characterized by a high-pressure area over the Central United States and two separate cold-core lows over California and West Virginia. By the morning of October 6, forecasters anticipated only a marginal risk of severe weather across Arizona. This prolonged the duration of an unstable environment across Arizona, [9] and the SPC once again issued a Slight risk across Arizona accordingly. While large hail and damaging winds were expected to be the primary threats, an isolated tornado risk was also outlined.
Rounds of supercells developed across Northern Arizona, [12] producing 11 confirmed tornadoes, the most on record in one day in Arizona and, along with an additional tornado in Utah , the highest number of tornadoes on record in a single event west of the Continental Divide. One noteworthy aspect of the event is that every tornadic supercell began to show signs of rotation south of the Mogollon Rim , but none of them produced confirmed tornadoes until after they tracked over that geological feature.
This strongly suggests that the mountainous terrain had a significant influence on the development of tornadoes that day. During the afternoon hours of October 5, a series of severe hailstorms affected Maricopa County, Arizona. One storm produced hail up to 1. These tennis ball sized hail stones damaged hundreds of roofs and vehicles, in addition to damaging dozens of aircraft at the Scottsdale Airport. Widespread golf ball to baseball sized hail, up to 3 in 76 mm in diameter, damaged thousands of roofs and vehicles.
In northwestern Phoenix and Glendale, this hailstorm compounded the effects of the earlier event. One person was injured by large hail on a football practice field. Thirty-four skylights at the St. Mary’s Food Bank in Phoenix were punctured, allowing heavy rainfall to flow into the structure.
Approximately 20 percent of the food inventory was ruined, equating to about 1. The stalled cold-core low produced heavy rainfall across the broader Nevada, Utah, Arizona, and California region. Over the course of five days, up to 5 in mm of rain fell across Southern Utah.
In advance of the flood, campers were airlifted to safety. Three tribal pack animals were killed in the village. The canyon was indefinitely closed to tourists following damage to the trail and campground. President Barack Obama declared the Havasupai Canyon a major disaster area and offered federal aid to assist in local recovery efforts. George, Utah , and taken to the hospital in critical condition; they were later expected to make a full recovery.
From Wikipedia, the free encyclopedia. Weather event. A home damaged by an EF2 tornado in Bellemont, Arizona. American Meteorological Society. Retrieved January 12, Storm Prediction Center. National Weather Service. October 5, Arizona Space Grant. National Centers for Environmental Information. Retrieved February 4, Journal of Structural Engineering.
Retrieved January 16, November Tornado outbreaks of Categories : F3 tornadoes by date F3 tornadoes by location Hailstorms Tornado outbreaks natural disasters in the United States in Arizona October events in the United States. Hidden categories: Articles with short description Short description matches Wikidata. Namespaces Article Talk. Views Read Edit View history. Help Learn to edit Community portal Recent changes Upload file. Download as PDF Printable version. Add links. EF3 tornado.
MST 11 hours, 7 minutes. Hundreds of ponderosa pine trees were snapped or blown down along the path. An alligator juniper tree that was 2. Trees were blown down across State Route 87 for 2 miles 3. Many trees were snapped or blown down.
Two forest roads were completely blocked by fallen trees. Over houses and several businesses were damaged, including at least 21 houses that were significantly damaged or destroyed.
Massive tree damage was also reported with thousands of trees snapped, and campers isolated as a result. Seven people were injured. A long track, wedge tornado paralleled the track of the previous EF2 tornado 1 mile 1. Multiple semi trucks and trailers were flipped on Interstate 40 , and 28 rail cars were derailed.
Forest damage was severe and many roads were blocked, and thousands of trees were downed in a circular pattern in a large swath. A few trees in the worst affected areas sustained debarking, and power poles were also snapped.
Some structures were damaged. Extensive forest damage occurred, with more forest roads being blocked due to fallen trees. This tornado passed 2 miles 3. The path of this tornado may have been made up of three different tornadoes instead of one longer-tracked tornado due to some evidence of extensive cycling.
A tornado was determined via aerial photography and surveys. A tornado along a short path was determined via damage surveys and aerial imagery. Tornado was observed as it remained over grasslands east of Interstate A large tornado tracked over an unpopulated region. Three metal truss transmission towers were destroyed — one of which was flattened — on the Navajo Nation.
The total path length of the tornado is unknown since it passed over a very rural area. A tornado was visually observed as it crossed Interstate Minimal damage occurred. A tornado was observed on the eastern side of Flagstaff. Little damage occurred. About 30 juniper trees were snapped or uprooted in a remote forested area.