Red Flag Warning
Issued by NWS Tucson, AZ

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638
WWUS85 KTWC 170934
RFWTWC

URGENT - FIRE WEATHER MESSAGE
National Weather Service Tucson AZ
234 AM MST Sat May 17 2025

AZZ151>154-180000-
/O.UPG.KTWC.FW.A.0013.250518T1700Z-250519T0300Z/
/O.NEW.KTWC.FW.W.0016.250518T1700Z-250519T0300Z/
/O.NEW.KTWC.FW.A.0014.250519T1700Z-250520T0300Z/
Arizona Fire Weather Zone 151
Western half Desert Grasslands FDRA including elevations up to
5500 feet in Southeast corner of Pinal County-
Extreme Eastern Pima County-Western third of Cochise County-
Santa Cruz County-TDC-Arizona Fire Weather Zone 152
Eastern half Desert Grasslands FDRA including elevations up to
5500 feet in Southwest Graham County and Eastern two thirds of
Cochise County-Southern San Carlos Reservation-
Southern Greenlee County below 5000 feet-TDC-
Arizona Fire Weather Zone 153
Northern Graham County-Northern Greenlee County-
White and Gila Mountains-Apache Sitgreaves NF-
Southern San Carlos Reservation above 5000 feet-SDC-
Arizona Fire Weather Zone 154
Forest Woodlands FDRA including the Sky Islands of Southeast
Arizona above 5500 feet-Coronado NF-TDC-
234 AM MST Sat May 17 2025

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MST SUNDAY FOR
STRONG AND GUSTY WINDS, LOW RELATIVE HUMIDITY, AND HIGH FIRE
DANGER FOR FIRE WEATHER ZONES 151, 152, 153, AND 154...

...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING FOR STRONG AND GUSTY WINDS, LOW RELATIVE HUMIDITY,
AND HIGH FIRE DANGER FOR FIRE WEATHER ZONES 151, 152, 153, AND
154...

The National Weather Service in Tucson has issued a Red Flag
Warning for strong and gusty winds, low relative humidity, and
high fire danger, which is in effect from 10 AM to 8 PM MST
Sunday. A Fire Weather Watch has also been issued for Monday
morning through Monday evening.

* AFFECTED AREA...Fire Weather Zones 151, 152, 153 and 154.

* TIMING...For the Red Flag Warning, from 10 AM to 8 PM MST
  Sunday. For the Fire Weather Watch, from Monday morning
  through Monday evening.

* WINDS...West to southwest at 15 to 25 mph with gusts up to 40
  mph on Sunday and west to northwest at 20 to 30 mph with gusts
  up to 45 mph on Monday.

* RELATIVE HUMIDITY...Ranging 9 to 15 percent.

* IMPACTS...Any fires that develop or are ongoing will have the
  potential to spread rapidly.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are expected to develop. A
combination of strong winds...low relative humidity...and dry
vegetation will create the potential for rapid and erratic fire
growth.

Please advise the appropriate officials or fire crews in the
field of the Red Flag Warning for portions of Southeast Arizona.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

Please advise the appropriate officials or fire crews in the
field of the Fire Weather Watch for portions of Southeast
Arizona.

&&

$$

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