1,237 first-hand accounts of flood events in Arizona, ranked by impact. Each is a NOAA-written narrative of the moment.
The combination of near record moisture content (PWATs 1.8-2.0 inches), moderate to strong instability (SBCAPE 2000 J/KG), very slow steering flow and an upper-level disturbance resulted in a very conducive environment for the generation of thunderstorms producing very heavy…
Read the full account →Daytime heating combined with divergence aloft associated with an easterly wave near the Arizona/New Mexico border promoted thunderstorm initiation across southeast Arizona during the afternoon of the 30th.
Read the full account →Daytime heating combined with divergence aloft associated with an easterly wave near the Arizona/New Mexico border promoted thunderstorm initiation across southeast Arizona during the afternoon of the 30th.
Read the full account →Daytime heating combined with divergence aloft associated with an easterly wave near the Arizona/New Mexico border promoted thunderstorm initiation across southeast Arizona during the afternoon of the 30th.
Read the full account →The combination of near record moisture content (PWATs 1.8-2.0 inches), moderate to strong instability (SBCAPE 2000 J/KG), very slow steering flow and an upper-level disturbance resulted in a very conducive environment for the generation of thunderstorms producing very heavy…
Read the full account →Isolated showers and thunderstorms initially began across parts of southern Gila County, along with eastern Maricopa County and northeast Pinal County, producing locally heavy rainfall leading to isolated flash flooding.
Read the full account →Isolated showers and thunderstorms initially began across parts of southern Gila County, along with eastern Maricopa County and northeast Pinal County, producing locally heavy rainfall leading to isolated flash flooding.
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 →Isolated showers and thunderstorms initially began across parts of southern Gila County, along with eastern Maricopa County and northeast Pinal County, producing locally heavy rainfall leading to isolated flash flooding.
Read the full account →The remnant mid-level circulation of what was Tropical Cyclone Kay was located over southern California. This led to southerly flow across Arizona, which helped increased moisture and instability with moisture values peaking at around 1.5 and MLCAPE values peaking at around 1000…
Read the full account →Under a classic setup for storm motion from the Northern Arizona high terrain to Southern Arizona lower deserts, with the monsoon 500mb high positioned over Nevada and Utah, a few multicell storm clusters developed and progressed west-southwest through the lower deserts in the…
Read the full account →High pressure situated south of the International Border led to a westerly flow aloft, which caused dry air advection. However, there was still sufficient moisture (PWAT around 1.5 inches) and instability (MLCAPE 1000-2000 J/KG) as well as a subtle disturbance in the…
Read the full account →Thunderstorms on the 19th initiated across southeast Arizona and along the Mogollon Rim during the late morning/early afternoon hours before pushing into the lower elevations of south-central Arizona.
Read the full account →Under a favorable easterly flow, a subtle disturbance in the upper-levels moved across southwest Arizona into southeast California, resulting in diurnally induced thunderstorm activity across the area during the early afternoon hours.
Read the full account →Thunderstorms on the 19th initiated across southeast Arizona and along the Mogollon Rim during the late morning/early afternoon hours before pushing into the lower elevations of south-central Arizona.
Read the full account →The remnant mid-level circulation of what was Tropical Cyclone Kay was located over southern California. This led to southerly flow across Arizona, which helped increased moisture and instability with moisture values peaking at around 1.5 and MLCAPE values peaking at around 1000…
Read the full account →Isolated showers and thunderstorms initially began across parts of southern Gila County, along with eastern Maricopa County and northeast Pinal County, producing locally heavy rainfall leading to isolated flash flooding.
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 →The remnant mid-level circulation of what was Tropical Cyclone Kay was located over southern California. This led to southerly flow across Arizona, which helped increased moisture and instability with moisture values peaking at around 1.5 and MLCAPE values peaking at around 1000…
Read the full account →Under a favorable easterly flow, a subtle disturbance in the upper-levels moved across southwest Arizona into southeast California, resulting in diurnally induced thunderstorm activity across the area during the early afternoon hours.
Read the full account →The remnant mid-level circulation of what was Tropical Cyclone Kay was located over southern California. This led to southerly flow across Arizona, which helped increased moisture and instability with moisture values peaking at around 1.5 and MLCAPE values peaking at around 1000…
Read the full account →The remnant mid-level circulation of what was Tropical Cyclone Kay was located over southern California. This led to southerly flow across Arizona, which helped increased moisture and instability with moisture values peaking at around 1.5 and MLCAPE values peaking at around 1000…
Read the full account →Abundant moisture (PWATs 1.7-2.0) and instability (MUCAPE 2,000 J/kg) provided a favorable environment for strong to severe thunderstorms across south-central Arizona on the 14th.
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.
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