1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
During the early morning hours on September 23rd, copious tropical moisture began to spread north and into south-central Arizona. A weather system dropping south out of Nevada began to act on the moisture, resulting in the development of numerous showers and thunderstorms.
Read the full account →Broad southeast flow associated with the circulation of Tropical Storm Kay, which was located just west of the Baja California Peninsula, set up across Arizona. This helped in advecting moisture into the area with PWAT's in excess of 1.5.
Read the full account →Multiple rounds of thunderstorms developed and drifted slowly across southeast Arizona from the early morning hours of August 10 through the late night/early morning hours of August 12.
Read the full account →High pressure across the southern Plains and low pressure across the Great Basin led to a southerly flow across the region, advecting deep moisture.
Read the full account →Severe thunderstorms moved across Southeastern Arizona causing strong winds, hail ranging from 0.75 to 1.0 inches in diameter, and locally heavy rainfall that led to flash flooding. A swift water rescue occurred near Tombstone involving 5 individuals with no injuries.
Read the full account →A line of thunderstorms moved northeastward through the Tucson Metro area causing damage to a roof, tree branches downed, and a palm tree uprooted.
Read the full account →Locally heavy rainfall occurred over the far north and northeast portions of the greater Phoenix area beginning during the evening hours on January 5th.
Read the full account →Scattered thunderstorms developed across the central deserts during the late afternoon and evening hours on September 26th. Some of the stronger storms produced locally heavy rain with peak rain rates in excess of one inch per hour.
Read the full account →Tropical moisture paired with a couple upper low systems led to the development of widespread rain and isolated thunderstorms across south-central Arizona over the course of the 19th through the 21st.
Read the full account →A powerful Pacific low pressure system moving into the desert southwest resulted in significant rains along with embedded thunderstorms that developed across portions of La Paz County during the evening hours on November 28th.
Read the full account →A powerful Pacific low pressure system moving slowly east across Arizona interacted with deep moisture to produce widespread moderate to heavy rain across the central deserts during the morning hours on November 29th.
Read the full account →Copious amounts of tropical moisture spread northward and into south-central Arizona during the morning hours on September 23rd. The moisture combined with a strong upper low west of Phoenix to generate widespread showers and thunderstorms.
Read the full account →During the early morning hours on September 23rd, copious tropical moisture began to spread north and into south-central Arizona. A weather system dropping south out of Nevada began to act on the moisture, resulting in the development of numerous showers and thunderstorms.
Read the full account →In a classical monsoonal regime, with deep-layered east to southeast flow, high instability (MLCAPE in excess of 1000-1500 J/KG) along with abundant moisture (PWAT 1.8+ inches) resulted in an environment favorable for thunderstorms.
Read the full account →Isolated to scattered monsoon thunderstorms developed across portions of the central deserts to the southwest of Phoenix during the evening hours on September 1st.
Read the full account →Isolated to scattered monsoon thunderstorms developed across portions of La Paz County, in the deserts of southwest Arizona, during the evening hours on September 1st.
Read the full account →Deep moisture, some of it tropical in nature, interacted with a pair of upper level low pressure systems and led to the development of widespread rain and isolated thunderstorms across south-central Arizona during the evening hours on the 20th.
Read the full account →Copious amounts of tropical moisture spread northward and into south-central Arizona during the morning hours on September 23rd. The moisture combined with a strong upper low west of Phoenix to generate widespread showers and thunderstorms.
Read the full account →A nearly stationary thunderstorm on the afternoon of August 16th, 2025 caused flash flooding in the Tucson Metro. Water flooded the streets from curb to curb, roughly 6 inches of moving water, occurred in multiple locations.
Read the full account →A strong Pacific upper level low pressure system moved into Arizona during the morning hours on October 13th and triggered the development of widespread moderate to heavy showers across the south-central deserts.
Read the full account →Thunderstorms with very heavy rain developed over portions of the greater Phoenix metropolitan area during the late evening hours on August 10th; the storms and heavy rain persisted into the morning hours on August 11th.
Read the full account →Copious amounts of tropical moisture spread north and into the south-central deserts during the morning hours on October 2nd; the moisture was associated with the remnants of former hurricane Rosa.
Read the full account →Strong to severe thunderstorms developed in an unstable atmosphere in the afternoon of the 22nd. Storms initially developed over the high terrain of northern and eastern Arizona as well as near the Table Top mesa area south of Phoenix.
Read the full account →An upper level trough and lead-on shortwave trough moved through Arizona during the day on the 18th. Moderate to high instability and high moisture content supported scattered strong thunderstorms.
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