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Hurricane Priscilla Remnants Bring Widespread Rain to Southwest, Phoenix Experiences Wettest October | Phoenix Weather: Storms Followed by Potential Record Heat | Preparing for Snowmelt and Basement Flooding Risks | Metro Detroit Weather Outlook: Warm Start, Stormy Mid-Week, and Cooler Temperatures to Follow | Sault Ste. Marie Weather Forecast: March 2026 | Western Washington Braces for Heavy Snow and Rain | Tennessee Weather Rollercoaster: False Spring, Storms, and the Equinox | How to Prepare for Severe Weather in San Antonio | Strong Storms Forecasted for Cincinnati and Rochester | Hurricane Priscilla Remnants Bring Widespread Rain to Southwest, Phoenix Experiences Wettest October | Phoenix Weather: Storms Followed by Potential Record Heat | Preparing for Snowmelt and Basement Flooding Risks | Metro Detroit Weather Outlook: Warm Start, Stormy Mid-Week, and Cooler Temperatures to Follow | Sault Ste. Marie Weather Forecast: March 2026 | Western Washington Braces for Heavy Snow and Rain | Tennessee Weather Rollercoaster: False Spring, Storms, and the Equinox | How to Prepare for Severe Weather in San Antonio | Strong Storms Forecasted for Cincinnati and Rochester
Weather / Severe Weather
Hurricane Priscilla Remnants Bring Widespread Rain to Southwest, Phoenix Experiences Wettest October
The remnants of Hurricane Priscilla have brought widespread rain and thunderstorms to the Southwest, significantly impacting weather conditions across California, Arizona, and Nevada. Phoenix experienced its fourth-wettest October on record...
Key Insights
- **Record Rainfall in Phoenix:** Phoenix experienced its fourth-wettest October on record, with Sky Harbor recording nearly 2 inches of rain on October 12.
- **Widespread Showers and Thunderstorms:** The remnants of Hurricane Priscilla caused widespread showers and thunderstorms across the Southwest, including Southern California and Arizona.
- **Flash Flooding:** Several areas experienced flash flooding, leading to road closures, water rescues, and property damage.
- **Travel Disruptions:** Flooding and standing water caused significant travel disruptions, including closures of major roadways and delays in light rail service.
- **Marine Heatwave Persists:** A pan-North Pacific marine heatwave continues to influence weather patterns, potentially increasing atmospheric water vapor and affecting storm intensity.
In-Depth Analysis
### Background Hurricane Priscilla, after being downgraded to a tropical storm, moved north off the coast of Baja California Sur. While it did not make landfall, its remnants brought significant moisture and instability to the Southwest. This resulted in a series of weather events, including heavy rainfall, thunderstorms, and flash flooding.
### Impact on California In California, the remnants of Priscilla interacted with an offshore low-pressure system, bringing scattered showers and thunderstorms, particularly to Southern California. The lower deserts of Southeastern California and the eastern slopes of the SoCal mountains faced the potential for heavy downpours and flash flooding.
### Phoenix Record Rainfall Phoenix experienced record-breaking rainfall, making it the fourth-wettest October on record. Since midnight on October 12, Sky Harbor recorded nearly 2 inches of rain, surpassing the previous daily record set in 1957. The total rainfall for the month exceeded 3 inches.
### Flooding and Road Closures Several areas in Arizona faced severe flooding. The U.S. 60 freeway near Globe was closed due to flooding, and Casa Grande experienced roadway closures due to high volumes of stormwater. Multiple water rescues were conducted in Buckeye, where people were stranded in floodwaters.
### Travel Disruptions Standing water and crashes led to significant travel disruptions. The Loop 202 in Chandler was closed due to standing water, and Valley Metro light rail service experienced delays due to flooded routes. Scottsdale also faced road closures due to flooding.
### Marine Heatwave Influence The persistent marine heatwave in the North Pacific is contributing to higher humidity and increased atmospheric water vapor. This may intensify storm activity and lead to more significant precipitation events in the region.
### Looking Ahead While Arizona is expected to dry out as Priscilla's remnants move out of the state, meteorologists are monitoring Tropical Storm Raymond, which could bring more showers to the region early next week.
FAQ
- **Q: What areas are most affected by the flooding?
- **Q: What is the impact of the marine heatwave?
- **Q: Are there more storms expected?
Takeaways
- Stay informed about weather updates and flood warnings.
- Avoid driving through flooded roadways.
- Prepare for potential travel disruptions.
- Monitor local news for road closures and safety advisories.
- Be aware of the increased risk of flash flooding in affected areas.
Discussion
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Sources
Hurricane Priscilla remnants to bring widespread Southwest rain/thunderstorms (including far SoCal); more widespread precipitation possible with colder NorCal system by mid-Oct
Weekend storms brought record-breaking rainfall to Phoenix
Remnants of Hurricane Priscilla storm Arizona brings widespread rain and road closures
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