Severe Thunderstorms Spark Flash Flood Warning in Phoenix Area
On September 26, 2025, thunderstorms significantly impacted the Phoenix area, prompting multiple flash flood warnings and delays at Phoenix Sky Harbor International Airport. Weather reports indicated accumulating rain, strong winds, and even hail, making it a day to remember as monsoon season comes to a close.
Thunderstorm Activity Intensifies
According to Tom Frieders, a meteorologist with the National Weather Service (NWS) in Phoenix, the threat of severe thunderstorms extended throughout the day, with multiple rounds expected. Early-morning showers began in northeast Maricopa County before moving westward by mid-morning.
He stated, “Throughout the morning we’ve seen quite a bit of thunderstorm activity, mainly across the north and West Valley.” The NWS also issued various severe thunderstorm warnings as storm activity intensified, particularly in areas heavily affected by rainfall.
Impact of Thunderstorms on Travel
The thunderstorms led to significant travel disruptions at Phoenix Sky Harbor International Airport. The Federal Aviation Administration (FAA) grounded flights on multiple occasions, issuing a ground delay advisory for any flights related to Phoenix. By midday, the FAA projected average delays of up to 75 minutes for arrivals and around 45 minutes for departures.
Heavy Rainfall Accumulations
As the storms rolled through the area, many regions recorded over an inch of rain. Areas such as central and south Phoenix, Glendale, Scottsdale, and Cave Creek reported substantial accumulations. Sky Harbor received nearly an inch of rain within just an hour, surpassing the total monsoon season rainfall previously recorded for the year.
The forecast indicated that some of the hardest-hit spots might end up with over three inches of rain by the end of the day. Residents were advised to be cautious, as the heavy rainfall could lead to quickly evolving flash flooding conditions.
Community Preparedness and Safety
Frieders emphasized the importance of public safety, urging residents to heed warnings: “Flash flooding can evolve real quickly when these storms move in. So, I just want to stress turn around, don’t drown, never drive through flooded roadways.” The NWS issued a flood watch from 8 a.m. to 11 p.m., indicating the potential for hazardous conditions throughout the day.
Looking Ahead: Weather Conditions
As the week progresses, the NWS predicts a decrease in chances for rain by Sunday evening, with clear skies expected for the following week. Temperatures are expected to remain significantly below seasonal averages, allowing residents to enjoy cooler weather as the monsoon season winds down.
As always, the unpredictable nature of weather patterns reminds the community of the importance of staying informed through local news updates and weather services.
Conclusion
The severe thunderstorms and associated flash flood warnings in the Phoenix area serve as a stark reminder of the raw power of nature, particularly as the monsoon season draws to a close. It’s essential for residents to remain prepared and aware of weather developments during these tumultuous times. Stay safe, Phoenix!
Frequently Asked Questions about Flash Flood Warnings
What causes flash flood warnings in Phoenix?
Flash flood warnings are typically issued when heavy rainfall occurs rapidly, leading to dangerous conditions such as swift water flow over roadways.
How can I stay safe during a flash flood?
The best way to stay safe during a flash flood is to avoid driving through flooded areas. Always heed warnings and seek higher ground if necessary.
How often do flash floods occur in Phoenix?
Flash floods can occur frequently during the monsoon season in Phoenix, typically from mid-June to late September, depending on weather conditions.
What should I do if a flash flood warning is issued?
If a flash flood warning is issued, you should avoid areas that are prone to flooding and always stay alert for updates from local weather authorities.
Is there assistance available during flooding events?
Yes, local authorities and emergency services often provide assistance and guidance when severe weather conditions arise. Always reach out for help if needed.
