"If we get normal or above normal rain, it reduces fire danger levels," Percha said. These fires burned over 100,000 acres on state and federal public lands. Thunderstorms in mid-June last year also produced lightning strikes that caused forest fires in drier regions that were not experiencing significant rainfall. Over 2.3 million cloud-to-ground lightning strikes occurred between June and September 2021, which was 30% under the record average of 3 million, according to the National Weather Service. "Most of our storms are hit or miss so even if you don't have rain, you still have the dust storms, the damaging winds and the lightning as well."Ī new record: Phoenix breaks 1990 heat record in first heat wave of spring "At least the odds are better than usual that we'll see normal to above normal rain," Percha said. 30., according to the weather service - which established the figure in 2008. Monsoon season begins June 15 and ends on Sept. The absolute heaviest rainfall fell near and over mountains across the region. Of course, the year before that was the driest on record," said Marvin Percha, a meteorologist with the National Weather Service in Phoenix.Īverage rainfall during the core monsoon months of June through September across the region in 2021 was 7.93 inches, which was the 20th wettest on record since 1895, according to a review done by the weather service. The National Weather Service in Phoenix predicts that Arizona is going to have a very wet and active monsoon season this summer, with nearly a 70% chance of precipitation expected to reach near or above normal across the Southwest.įollowing the driest monsoon season on record in 2020, one of the wettest monsoons on record across the Southwest occurred in 2021. View Gallery: Arizona monsoon in photos: Dust storms, lightning and flash floods
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