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Extreme Heat Warning issued September 8 at 1:09AM MST until September 11 at 8:00PM MST by NWS Phoenix AZ

2026-09-09T17:00:00.000Z · Recorded

The source states this happened, and its date is not in the future. The word the source used for it is update.

* 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. 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 · https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.225bea99f80706e3c62bbe4f3e3d291985452803.005.1

Standing

This record: source verified · publisher: verified

How it arrived

Captured — Requested from the publisher's own endpoint by a source adapter and captured at the moment of the request.

What the source measured

• severity Severe · stated by National Weather Service
• certainty Likely · stated by National Weather Service
• urgency Expected · stated by National Weather Service
• messageType Update · stated by National Weather Service
• alertStatus Actual · stated by National Weather Service
• expires 2026-09-08T15:00:00-07:00 · stated by National Weather Service

Values the publisher recorded. Richseen adds no score, confidence or ranking to them.

Where

National Weather Service named an area rather than a point, so this is listed and not drawn.Area, in the source’s words: Parker Valley; Central La Paz; Palo Verde Valley; Chuckwalla Valley

Subject

No canonical Atlas object resolved for this record.