1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
A strong ridge over the central United States and a trough draped across the West Coast put Arizona in a position to receive a moist southerly wind flow.
Read the full account →A slow-moving low pressure system brought several rounds of showers and thunderstorms over multiple days through much of the region. Activity on the 25th was mostly concentrated across higher terrain areas of eastern AZ, fueled by MLCAPE values approaching 2000 J/kg.
Read the full account →A very moist (PWATs 2.0+ inches) and unstable (MLCAPE 2000-3000 J/KG) air mass led to be a very conducive environment for vigorous thunderstorm activity across portions of southwest Arizona.
Read the full account →An influx of tropical moisture from tropical storms Pricilla and Raymond allowed for deep moisture as well as showers and thunderstorms to form from October 11th through October 14th.
Read the full account →An influx of tropical moisture from tropical storms Pricilla and Raymond allowed for deep moisture as well as showers and thunderstorms to form from October 11th through October 14th.
Read the full account →An influx of tropical moisture from tropical storms Pricilla and Raymond allowed for deep moisture as well as showers and thunderstorms to form from October 11th through October 14th.
Read the full account →A nearly stationary upper-level trough combined with tropical moisture remnants from Tropical Storms Priscilla and Raymond, which developed off the eastern Pacific, led to scattered to widespread thunderstorm activity across much of south-central AZ.
Read the full account →On the 4th, deep moisture was in place with near record level PWAT values of 1.8-2.0 inches observed by regional soundings. Instability was marginal with MLCAPE around 1000 J/kg, but it was sufficient for thunderstorms to develop across Gila county in the afternoon.
Read the full account →A number of rounds of thunderstorms were triggered by a westward moving upper level weather system across southeast Arizona from the afternoon of July 22 into the early morning of July 23.
Read the full account →An influx of tropical moisture from tropical storms Pricilla and Raymond allowed for deep moisture as well as showers and thunderstorms to form from October 11th through October 14th.
Read the full account →An influx of tropical moisture from tropical storms Pricilla and Raymond allowed for deep moisture as well as showers and thunderstorms to form from October 11th through October 14th.
Read the full account →Between the evening of November 17th and the evening of the 20th, a slow-moving upper-level low pressure system progressed through the Desert Southwest.
Read the full account →Between the evening of November 17th and the evening of the 20th, a slow-moving upper-level low pressure system progressed through the Desert Southwest.
Read the full account →Thunderstorms moved through the Tucson Metro area on the evening of September 18th and produced locally heavy rainfall that caused washes to flow with water. Two swift water rescues occurred along the Alamo wash due to people attempting to cross in their cars.
Read the full account →Thunderstorms moved through the Tucson Metro area on the evening of September 18th and produced locally heavy rainfall that caused washes to flow with water. Two swift water rescues occurred along the Alamo wash due to people attempting to cross in their cars.
Read the full account →An upper-level trough moving through the area providing strong upper-level ascent combined with MLCAPE values between 1500-3000 J/kg and PWAT values between 1.8-2.0 (associated with the remnants of Tropical Cyclone Lorena) resulted in numerous showers and thunderstorms across…
Read the full account →A breach in a berm along Rucker Creek near the northeast edge of Elfrida caused flash flooding in part of town on August 23. Additional rainfall in town and upstream of the breach exacerbated the flooding later that day.
Read the full account →Multiple rounds of thunderstorms developed and moved across southeast Arizona from mid morning of August 16 through the early evening of August 17.
Read the full account →A number of rounds of thunderstorms were triggered by a westward moving upper level weather system across southeast Arizona from the afternoon of July 22 into the early morning of July 23.
Read the full account →A number of rounds of thunderstorms were triggered by a westward moving upper level weather system across southeast Arizona from the afternoon of July 22 into the early morning of July 23.
Read the full account →A nearly stationary upper-level trough combined with tropical moisture remnants from Tropical Storms Priscilla and Raymond, which developed off the eastern Pacific, led to scattered to widespread thunderstorm activity across much of south-central AZ.
Read the full account →A nearly stationary upper-level trough combined with tropical moisture remnants from Tropical Storms Priscilla and Raymond, which developed off the eastern Pacific, led to scattered to widespread thunderstorm activity across much of south-central AZ.
Read the full account →A nearly stationary upper-level trough combined with tropical moisture remnants from Tropical Storms Priscilla and Raymond, which developed off the eastern Pacific, led to scattered to widespread thunderstorm activity across much of south-central AZ.
Read the full account →A nearly stationary upper-level trough combined with tropical moisture remnants from Tropical Storms Priscilla and Raymond, which developed off the eastern Pacific, led to scattered to widespread thunderstorm activity across much of south-central AZ.
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