The following events were reported: Flash Flood, Hail, Lightning, Thunderstorm Wind. These occurred near station USW00023183, approximately 25.0168 km away, between 2021-08-16 22:40:00 and 2021-08-17 09:00:00. The events included records with hailstones measuring 49.65277777777778 inches.Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 41250.0 and crop damage of 0.0. Episode Narrative: A shortwave trough rotating through the region led to steepening lapse rates and increasingly unstable conditions across central Arizona on the 16th. With abundant moisture and high CAPE values in place, the environment was favorable for the development of strong to severe thunderstorms. Thunderstorms initially developed over the high terrain of eastern Arizona before racing toward the west/southwest into the lower deserts of south-central Arizona as a line of strong to severe thunderstorms. The main impacts associated with these thunderstorms occurred as they moved into the Phoenix metro, producing widespread damaging wind gusts. Multiple observations recorded wind gusts in excess of 60 mph with a few approaching 80 mph. Recently implemented damage threat categories for Severe Thunderstorm Warnings were put to the test with one destructive Severe Thunderstorm Warning being issued for 80 mph wind gusts for much of Phoenix. There were numerous reports of downed trees across the Valley as a result of the severe wind gusts. The strong winds also led to several reports of dense blowing dust in dust prone areas. Additionally, thunderstorms produced locally heavy rainfall that led to several instances of flash flooding. No injuries were reported. A shortwave trough rotating through the region led to steepening lapse rates and increasingly unstable conditions across central Arizona on the 16th. Event Narrative: Multiple trees were reported down along Hunt Highway between Gary Road and Bella Vista Road. A fence was destroyed by a downed tree near Hunt Highway and Gantzel Road. Multiple trees were also reported to be uprooted along Charbray Drive between between Empire Boulevard and Skyline Drive. Timing was estimated using radar. The Phoenix Sky Harbor ASOS recorded a 69 mph gust. Photos on social media showed multiple trees uprooted along Cooper Road between Queen Creek Road and Ocotillo Road. Videos on social media showed multiple trees down along Pecos Road between McQueen Road and Cooper Road in Chandler. Videos also showed a large tree in this area blocking a roadway requiring a large pickup truck to remove it. Photos on social media showed a large tree down on power lines near Lower Buckeye Road between 67th Avenue and 75th Avenue. Timing of 60-65 mph winds was estimated using radar. Photos on social media show a charred pickup truck after catching on fire from being struck by lightning in a neighborhood near Ocotillo Road and Schnepf Road. The Maricopa County Flood Control District Mobile AZ ALERT mesonet station recorded a 60 mph gust. Sossaman Road and Via Del Jardin was closed at Sonoqui Wash due to flooding. A nearby Maricopa County Flood Control District stream gage near Hawes Road recorded flow in the wash climbing above alarm stage at around 2340MST. Flow in the wash continued to increase during the early morning hours on the 17th before cresting above bank full at 7.10 feet and 2237 CFS at 0010MST. Timing was estimated using the stream gage. No damage or injuries were reported. A large uprooted tree was reported to have caused damage to a brick wall and a sprinkler system at a home near Cactus Road and 101st Street. Video on social media showed water rapidly flowing across 12th Street near the Torre Blanca community making the street impassable. A social media photo showed a large uprooted tree down on a carport at an apartment complex. No injuries or damaged cars were reported. Photos on social media showed a large tree approximately 40-50 feet tall snapped in half near 35th Avenue and Peoria Avenue. Photos on social media showed a large uprooted tree along Alma School Road between Ray Road and Chandler Boulevard, causing damage to a block wall along with knocking down a light pole. A weather station located at the Gila River Valley Lookout on South Mountain measured a 75.6 mph gust. Helicopter footage from a local TV station showed a large uprooted tree down on a home near Scottsdale Road and Chaparral Road. Footage also showed another large tree down at a nearby apartment complex, resulting in damage to the pool area and to one of the apartment buildings. Approximately 1 mile to the northeast, a large tree 2 feet in diameter was reported to have snapped in half along 82nd Street across from Saguaro High School. A downed power pole was reported near Ellsworth Road and Brown Road in Mesa. Heavy rain flooded the underpass of I-17 at Greenway Road with at least one driver becoming stuck. Maricopa County Flood Control District stream gage ACDC at 43rd Avenue exceeded alarm stage resulting in downstream impacts at Thunderbird Paseo Park. Timing was estimated from when the gage reach alarm stage and time to travel downstream. Photos on social media showed downed power poles near 44th Street and Indian School Road. Additional photos showed a couple of snapped palm trees down in the same area causing severe damage to a vehicle as well as to the the gate of a driveway. Several downed trees were reported within neighborhoods surrounding Estrella Parkway and Yuma Road. The largest downed tree was approximately 40 feet tall. The City of Goodyear reported that Citrus Road was closed between I-10 and Van Buren Street as well as Yuma Road and Durango Street due to flooding. A 68 mph gust was recorded by a trained weather spotter using a handheld anemometer near Baseline Road and Rural Road. A photo on social media showed a large uprooted tree down on some power lines near 15th Avenue and Glendale Avenue.