Flood Watch Issued for Phoenix and Arizona as Pacific Low-Pressure System Approaches

A flood watch has been issued for a large portion of Arizona, including the metro Phoenix area, spanning from Wednesday morning through Thursday afternoon. Forecasters warn that flash flooding will be likely in many locations as a Pacific low-pressure system moves into the region and destabilizes the atmosphere.

While weather discussions have circulated regarding the possibility of tornadoes in Arizona, meteorologists emphasize that flash flooding and the potential for microbursts remain the primary concerns. Officials noted that a similar meteorological setup last October produced a major microburst in Tempe.

First Alert Weather Days have been declared for Wednesday and Thursday due to expected showers and ongoing thunderstorms. The incoming rain is projected to disrupt commute times across two days, bringing up to one inch of precipitation to parts of town, though most areas are expected to receive lesser amounts. Mountainous regions in the northern and eastern portions of the Valley could experience heavier rainfall totals.

The unsettled weather stems from a cut-off Pacific low-pressure system lingering off the coast of California, which is drawing moisture inland toward Arizona. According to the latest maps from the Storm Prediction Center, most of the state faces a chance of thunderstorms on Wednesday, with eastern Arizona confronting a slightly elevated 15 percent chance of severe weather that extends into the far East Valley. Timing remains a critical factor as the system advances.

The incoming storms will also bring a notable shift in temperatures. Following high temperatures in the low 90s on Tuesday in the Valley, daily highs are anticipated to drop into the 70s by the end of the week.