NWS Phoenix AZXH.W 0009September 7, 2026
Extreme Heat Warning: Parker Valley, Central La Paz, Palo Verde Valley and 1 more, AZ and CA
The National Weather Service office in Phoenix issued an extreme heat warning for Parker Valley, Central La Paz, Palo Verde Valley and 1 more in Arizona, California, which was in force until 8:00 p.m. local time on September 11. It was the 9th extreme heat warning the NWS office in Phoenix issued in 2026. Arizona had 2 extreme heat warnings in September 2026, against 2 in an average September of 2008-2025 (Arizona's extreme heat warnings by year).
ExpiredWarning
In force for 2 days; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Phoenix AZ
- Area
- Parker Valley, Central La Paz, Palo Verde Valley and 1 more
- State
- Arizona
- Level
- Warning
- Issued
- 12:33 a.m. PDT, September 7, 2026
- In force from
- 10:00 a.m. PDT, September 9, 2026
- Expires
- 8:00 p.m. PDT, September 11, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KPSR XH.W 0009
- Official source
- National Weather Service: the notice at its source
Extreme Heat Warnings in Arizona since 2008Every warning type in Arizona
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
* WHAT...Dangerously hot conditions. Afternoon temperatures 102 to 111 expected. Major Heat Risk. * WHERE...In Arizona, Central La Paz and Parker Valley. In California, Chuckwalla Valley and Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ Wednesday to 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.
What the agency told people to do
An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.