1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
Low pressure along the central California coastline coupled with high pressure located over the Texas and Oklahoma panhandles created southwesterly flow over southern Arizona and scattered thunderstorms over Graham, Pinal and Pima Counties.
Read the full account →A strong Pacific storm system moved across Arizona December 28th and 29th with heavy rainfall. The governor of Arizona declared a state of emergency for Coconino and Yavapai Counties which provided $200,000 aid for relief efforts.
Read the full account →A strong Pacific storm system moved across Arizona December 28th and 29th with heavy rainfall. The governor of Arizona declared a state of emergency for Coconino and Yavapai Counties which provided $200,000 aid for relief efforts.
Read the full account →A strong Pacific storm system moved across Arizona December 28th and 29th with heavy rainfall. The governor of Arizona declared a state of emergency for Coconino and Yavapai Counties which provided $200,000 aid for relief efforts.
Read the full account →An unusual early June scenario occurred as a cutoff upper level low off the California coast interacted with residual tropical moisture brought up into Arizona from what was once Tropical Storm Alvin.
Read the full account →An unusual early June scenario occurred as a cutoff upper level low off the California coast interacted with residual tropical moisture brought up into Arizona from what was once Tropical Storm Alvin.
Read the full account →High pressure remained over New Mexico with adequate moisture across southeast Arizona in east to southeast flow. Thunderstorms moved west and northwest across southeast Arizona producing damaging winds and flash flooding from the evening hours of the the 26th into the early…
Read the full account →A severe thunderstorm moved across the city of Tucson during evening, producing strong winds and heavy rain. Tucson police reported several roads closed due to flooding. Tucson International Airport recorded 1.49 inches of rain during this event.
Read the full account →Scattered to numerous showers and thunderstorms moved across portions of the south central deserts, including northwestern Maricopa county and eastern La Paz county, during the morning hours on September 10th.
Read the full account →Southerly flow spread copious amounts of tropical moisture northward and into the south central Arizona deserts during the morning hours on September 9th.
Read the full account →The atmosphere across south central Arizona was very moist and unstable on August 26th, due in part to lingering moisture that had spread in earlier from former tropical storm Ivo.
Read the full account →The atmosphere across south central Arizona was very moist and unstable on August 26th, due in part to lingering moisture that had spread in earlier from former tropical storm Ivo.
Read the full account →A high amplitude ridge was centered over the western U.S. with surface high located in eastern New Mexico. Precipitable water values ranged from 1.25 to 2 inches, and a flash flood watch was in effect for the area.
Read the full account →A high amplitude ridge was centered over the western U.S. with surface high located in eastern New Mexico. Precipitable water values ranged from 1.25 to 2 inches, and a flash flood watch was in effect for the area.
Read the full account →A large convective complex formed over south central Arizona during the early morning hours on August 23rd, a result of a weather disturbance acting on a very humid and unstable airmass.
Read the full account →With the subtropical high pressure system centered over the Four Corners Region, the flow across the region was from the southeast. Thunderstorms developed during the afternoon hours, particularly over Pima County in southeast AZ, and were steered northwestward towards western…
Read the full account →With the subtropical high pressure system situated across northern AZ, the steering flow was from the east. Riding underneath the subtropical high was an easterly disturbance near the International Border, which helped enhance the easterly flow at mid-levels upwards of 25 kts as…
Read the full account →The typical afternoon thunderstorm activity developed across the higher terrain areas of northern and eastern AZ. Most the activity remain anchored over the high terrain with barely any activity observed across the lower elevations given the strong convective inhibition in…
Read the full account →With the subtropical high pressure centered near the Lower Colorado River Valley, the steering flow pattern across much of eastern and central AZ was from the north to northeast.
Read the full account →A strong instability plume set up across the southeastern half of AZ with MLCAPE values upwards of 1000 J/KG. Simultaneously, an upper-level trough moving across the Pacific Northwest resulted in a corridor of strong vertical ascent.
Read the full account →With the subtropical high pressure centered near the Lower Colorado River Valley, the steering flow pattern across much of eastern and central AZ was from the north to northeast.
Read the full account →With the subtropical high pressure centered near the Lower Colorado River Valley, the steering flow pattern across much of eastern and central AZ was from the north to northeast.
Read the full account →With the subtropical high pressure centered near the Lower Colorado River Valley, the steering flow pattern across much of eastern and central AZ was from the north to northeast.
Read the full account →Thunderstorms moved through the Tucson Metro area on the afternoon and evening of September 17th. Two storms moved through the metro, producing heavy rainfall and flash flooding.
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