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Long-duration excessive heat event likely to cause public health impacts with the greatest impacts starting Friday onward.
Increasing areas of Major HeatRisk with localized Extreme HeatRisk expected over the weekend.
Isolated thunderstorms mainly over high terrain areas are possible today, with chances beginning to decrease thereafter.
NOAA/NWS Phoenix Heat Page
CHANGES FROM PREVIOUS BRIEFING
• Increased the Phoenix metro area to Extreme HeatRisk on Friday through at least Sunday.
• Increased the High Terrain areas to Major HeatRisk on Saturday through at least Sunday.
• Increased Southwest Arizona AND Southeast California to Extreme HeatRisk on Saturday through at least Sunday.
WEATHER RISK OUTLOOK
Risk levels incorporate potential impacts from weather hazards and likelihood of occurrence. The weather hazard with the greatest risk will be listed first in the matrix.
Forecast Update.jpg)
