Red Flag Warning
Issued by NWS Riverton, WY

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WWUS85 KRIW 260528
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1128 PM MDT SAT JUL 25 2015

...HIGH FIRE DANGER EXPECTED SUNDAY AND MONDAY...

.PERIODS OF HOT...DRY...WINDY AND UNSTABLE CONDITIONS ARE EXPECTED
SUNDAY AFTERNOON AND AGAIN ON MONDAY AFTERNOON AHEAD OF A DRY
COLD FRONT EXPECTED TO MOVE THROUGH LATE MONDAY AFTERNOON AND
EVENING.

WYZ280-281-285-300-261915-
/O.NEW.KRIW.FW.W.0011.150726T1900Z-150728T0400Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIGHORN MOUNTAINS-CASPER MOUNTAIN-
1128 PM MDT SAT JUL 25 2015

...RED FLAG WARNING IN EFFECT FROM 1 PM SUNDAY TO 10 PM MDT
MONDAY FOR HOT...DRY...WINDY AND UNSTABLE CONDITIONS AHEAD OF A
DRY COLD FRONT PASSAGE FOR FIRE WEATHER ZONES 280...281... 285 AND
300...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM SUNDAY TO 10 PM MDT
MONDAY.

* AFFECTED AREA...FIRE WEATHER ZONES 280...281...285 AND 300.

* WIND...SOUTHWEST WIND INCREASING TO 15 TO 25 MPH THIS AFTERNOON
  WITH WINDS INCREASING FURTHER OVERNIGHT AND INTO MONDAY...PEAKING
  AT 25 TO 35 MPH ON MONDAY AFTERNOON WITH GUSTS AROUND 45 MPH IN
  MORE EXPOSED AND WIND PRONE AREAS. A WIND SHIFT TO THE WEST-
  NORTHWEST WITH A DRY COLD FRONT CAN BE EXPECTED ON MONDAY
  EVENING...FIRST IN ZONE 281 THEN MOVING SOUTHEAST BETWEEN 1800
  AND 2000. EXPECT A PERIOD OF EQUALLY STRONG WIND ALONG WITH AND
  IMMEDIATELY BEHIND FRONTAL PASSAGE.

* HUMIDITY...7 TO 15 PERCENT EACH AFTERNOON RECOVERING ABOVE 30
  PERCENT SUNDAY EVENING AT AROUND 2200. THE RELATIVE HUMIDITY
  WILL HIT CRITICAL LEVELS A BIT EARLIER ON MONDAY...AT AROUND
  1100. THE MID SLOPES OF ZONE 285 WILL HAVE POOR RECOVERY AT
  AROUND 25 PERCENT SUNDAY NIGHT. ALL ZONES WILL HAVE GOOD
  HUMIDITY RECOVERY BEHIND THE COLD FRONT MONDAY NIGHT.

* OTHER...A HIGH HAINES INDEX OF 6 IS EXPECTED SUNDAY AND MONDAY.
  IN ADDITION...HIGH TEMPERATURES WILL BE IN THE 80S AND
  90S...WHICH IS 5 TO 10 DEGREES ABOVE AVERAGE FOR THIS TIME OF
  YEAR.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES MAY
LEAD TO EXTREME FIRE BEHAVIOR.

&&

$$


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