1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
Moderate to heavy rainfall amounts were reported over two days after a plume of subtropical air moved into Arizona. The heaviest amounts occurred over the higher terrain generally east and north of Phoenix, resulting in flooded roads and other low-lying areas.
Read the full account →Ridge of high pressure continued to migrate eastward across northern Sonora, Mexico. Scattered convection again developed during the late morning hours, and light winds aloft lead to erratic storm motion.
Read the full account →Scattered thunderstorms with locally heavy rainfall developed over south central Arizona during the afternoon hours on July 28th. Some of the storms produced locally heavy rainfall which fell on the Sunflower Burn area located in far northeastern Maricopa county.
Read the full account →Severe thunderstorms with very heavy rain began over central Mohave County around 12:30 am and ended around 2:30 am MST. Washes rapidly filled in the vicinity of Kingman and several roads were washed out.
Read the full account →A moisture-rich environment was in place on the 24th with PWAT values climbing upwards of 2 across south-central Arizona. A weak disturbance embedded in the flow aided in shower and thunderstorm development to persist out of southeast Arizona and into central portions of the…
Read the full account →A mid-level high pressure was situated across southern Nevada, with the local area under an northeasterly flow regime. At upper-levels, a disturbance moving northward out northern Baja California resulted in a diffluent flow, favorable for vertical ascent.
Read the full account →Favorable monsoonal conditions promoted the development of severe thunderstorms across the region on the 18th. Abundant moisture (PWATs of 1.7-2.0) and instability (MUCAPE 1,000-2,000 J/kg) was in place across south-central and southwest Arizona, while increased easterly…
Read the full account →Abundant moisture (PWATs 1.75-2.00 inches) and instability (MLCAPE 1000+ J/KG) combined with an approaching upper-level trough to result in an environment favorable for strong convective activity.
Read the full account →Under an easterly wind flow, subtle disturbances in the upper-levels moved across the state, helping to instigate thunderstorm activity across portions of south-central and southwestern Arizona during the late afternoon and early evening hours.
Read the full account →A mid-level high pressure was situated across southern Nevada, with the local area under an northeasterly flow regime. At upper-levels, a disturbance moving northward out northern Baja California resulted in a diffluent flow, favorable for vertical ascent.
Read the full account →Favorable monsoonal conditions promoted the development of severe thunderstorms across the region on the 18th. Abundant moisture (PWATs of 1.7-2.0) and instability (MUCAPE 1,000-2,000 J/kg) was in place across south-central and southwest Arizona, while increased easterly…
Read the full account →Favorable monsoonal conditions promoted the development of severe thunderstorms across the region on the 18th. Abundant moisture (PWATs of 1.7-2.0) and instability (MUCAPE 1,000-2,000 J/kg) was in place across south-central and southwest Arizona, while increased easterly…
Read the full account →A mid-level high pressure was situated across southern Nevada, with the local area under an northeasterly flow regime. At upper-levels, a disturbance moving northward out northern Baja California resulted in a diffluent flow, favorable for vertical ascent.
Read the full account →A shortwave trough approaching the area from the west along with moderate levels of instability (MLCAPE 1000 J/KG) and unseasonably high moisture content above the 90th percentile (PWAT 1-1.3) resulted in a favorable environment for the development of strong thunderstorms.
Read the full account →A slow moving cutoff low was situated over southern Arizona, providing forced ascent. Two rounds of convection occurred, with the first round affecting portions of south-central Arizona during the very early morning hours (0000-0400MST) and the second round affecting far…
Read the full account →A slow moving cutoff low was situated over southern Arizona, providing forced ascent. Two rounds of convection occurred, with the first round affecting portions of south-central Arizona during the very early morning hours (0000-0400MST) and the second round affecting far…
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
Read the full account →A slow moving low pressure system brought several rounds of showers and thunderstorms across portions of south-central and southwestern Arizona throughout the day on the 15th.
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