1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
An upper-level disturbance lingering over the area in combination with MLCAPE of approximately 1000-1500 J/KG and DCAPE of around 1000 J/KG lead to the development of strong storms across portions of southern and central Arizona during the afternoon hours.
Read the full account →Favorable positioning of the monsoon high pressure system over New Mexico allowed for a surge of moisture into southern Arizona. An upper level disturbance rotating around the high was the focus for thunderstorm development across the region.
Read the full account →High pressure aloft was centered over central Arizona on July 19th. Numerous thunderstorms rotated around this upper high, and affected much of southeast Arizona during the afternoon and evening hours.
Read the full account →A weakening upper level disturbance over Northern Chihuahua, Mexico moved into Southeast Arizona where plenty of moisture was already in place due to tropical storm Blas. Precipitable water was almost double the normal level for mid-July thanks to these features.
Read the full account →Surface low pressure located at the Nevada/California/Arizona border, along with high pressured centered just east of the four corners region helped bring moisture north from Mexico into Southern Arizona.
Read the full account →Scattered thunderstorms developed across the Mogollon Rim and International Border during the afternoon and moved west across southeast Arizona through the evening hours.
Read the full account →Scattered thunderstorms developed across the Mogollon Rim and International Border during the afternoon and moved west across southeast Arizona through the evening hours.
Read the full account →Diurnally and terrain induced thunderstorms developed across portions of southwest Arizona during the later afternoon and early evening hours. The environment was characterized by a very moist air mass (PWATs 2+ inches) and a highly unstable air mass (MLCAPE 1500+ J/KG).
Read the full account →Diurnally and terrain induced thunderstorms developed across portions of southwest Arizona during the later afternoon and early evening hours. The environment was characterized by a very moist air mass (PWATs 2+ inches) and a highly unstable air mass (MLCAPE 1500+ J/KG).
Read the full account →Abundant moisture(PWAT 1.8) and moderate to high instability (MLCAPE 1000-2000 J/KG) led to the development of diurnally induced isolated thunderstorm activity, mainly across portions of southwestern Arizona.
Read the full account →Complex of showers and thunderstorms moved eastward across central Arizona in the early morning hours south of the Mogollon Rim. Another wave of low pressure moved across Arizona for the second day in a row.
Read the full account →Complex of showers and thunderstorms moved eastward across central Arizona in the early morning hours south of the Mogollon Rim. Another wave of low pressure moved across Arizona for the second day in a row.
Read the full account →Complex of showers and thunderstorms moved eastward across central Arizona in the early morning hours south of the Mogollon Rim. Another wave of low pressure moved across Arizona for the second day in a row.
Read the full account →Widespread rain, moderate to heavy at times, developed across the deserts of far southeast California and southwest Arizona during the morning hours on January 15th. Peak rain rates were in excess of one half inch per hour at times and led to episodes of areal flooding.
Read the full account →Locally heavy rain occurred across portions of south-central Arizona during the afternoon and evening hours on February 14th, affecting both northern Maricopa and southern Gila Counties.
Read the full account →Locally heavy rain occurred across portions of south-central Arizona during the afternoon and evening hours on February 14th, affecting both northern Maricopa and southern Gila Counties.
Read the full account →Scattered thunderstorms developed across portions of La Paz County during the early afternoon hours on August 7th; some of the stronger storms produced locally heavy rainfall with peak rain rates in excess of one inch per hour.
Read the full account →Scattered thunderstorms developed across portions of La Paz County in southwest Arizona during the afternoon hours on September 26th. Some of the stronger storms produced heavy rain with peak rain rates in excess of one inch per hour.
Read the full account →Lines of showers and thunderstorms continued to move through the western portions of the greater Phoenix area during the very early morning hours on September 24th and some of the stronger storms produced very heavy rain with peak rain rates well in excess of one inch per hour.
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 →Isolated to scattered monsoon thunderstorms developed across higher terrain locations to the east of Phoenix on September7th. Some of the stronger storms produced locally heavy rains with peak rain rates well in excess of one inch per hour.
Read the full account →Isolated monsoon thunderstorms developed across the southwestern deserts during the evening hours on September 4th and some of them affected areas to the northeast of Yuma and east of the lower Colorado River valley.
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 very large are of low pressure brought wind, rain, and snow to northern Arizona Thanksgiving day and Black Friday. Strong southerly winds brought very moist air over Arizona with rising snow levels.
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