Red Flag Warning
Issued by NWS Riverton, WY

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WWUS85 KRIW 300255
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
855 PM MDT SAT AUG 29 2015

...CRITICAL FIRE WEATHER PATTERN THIS WEEKEND...

.A CRITICAL WEATHER PATTERN CONTINUES AS SOUTHWEST FLOW INCREASES
AHEAD OF AN APPROACHING COLD FRONT. WIND SPEEDS ARE LIKELY TO BE
STRONGER ON SUNDAY...BUT WITH SLIGHTLY HIGHER RELATIVE HUMIDITIES.
HOWEVER...SUNDAY WILL ALSO BRING AN INCREASE IN THUNDERSTORM
ACTIVITY WITH NATURAL FIRE STARTS POSSIBLE.

WYZ275-276-282-287-300400-
/O.EXP.KRIW.FW.W.0014.000000T0000Z-150830T0300Z/
NORTH BIG HORN BASIN/WORLAND BLM-CODY FOOTHILLS-
SOUTH BIG HORN BASIN/WORLAND BLM-OWL CREEK MOUNTAINS-
855 PM MDT SAT AUG 29 2015

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WIND...LOW HUMIDITY...HOT TEMPERATURES...AND A HAINES INDEX
OF 6...

WIND SPEEDS HAVE DECREASED AND THE RELATIVE HUMIDITY HAS
INCREASED. THUS THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

WYZ277-279-300400-
/O.EXP.KRIW.FW.W.0014.000000T0000Z-150830T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
855 PM MDT SAT AUG 29 2015

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WIND...LOW HUMIDITY...HOT TEMPERATURES...AND A HAINES INDEX
OF 6...

WIND SPEEDS HAVE DECREASED AND THE RELATIVE HUMIDITY HAS
INCREASED. THUS THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

WYZ414>416-300400-
/O.EXP.KRIW.FW.W.0014.000000T0000Z-150830T0300Z/
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
855 PM MDT SAT AUG 29 2015

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WIND...LOW HUMIDITY...WARM TEMPERATURES...HIGH HAINES
INDEX...AND DRY THUNDERSTORMS...

WIND SPEEDS HAVE DECREASED AND THE RELATIVE HUMIDITY HAS
INCREASED. THUS THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

WYZ280-281-283-285-289-300-301100-
/O.CON.KRIW.FW.W.0014.000000T0000Z-150831T0300Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
UPPER WIND RIVER BASIN/WIND RIVER BASIN-SOUTH BIGHORN MOUNTAINS-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-CASPER MOUNTAIN-
855 PM MDT SAT AUG 29 2015

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SUNDAY FOR
GUSTY WIND...LOW HUMIDITY...HOT TEMPERATURES...AND A HAINES INDEX
OF 6...

* WIND...SOUTHWEST INCREASING TO 15 TO 25 MPH WITH GUSTS AROUND 35
  MPH BY 1800 SUNDAY AFTERNOON.

* MAXIMUM TEMPERATURES...88 TO 93.

* HUMIDITY...RELATIVE HUMIDITY WILL RETURN TO THE MID TEENS
  AROUND NOON ON SUNDAY.

* HAINES INDEX...6

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED DRY THUNDERSTORMS
  ON SUNDAY WITH AN LAL OF 6.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  OUTDOOR BURNING IS NOT RECOMMENDED AND CAMPFIRES NEED TO BE
  OUT COLD.

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 WILL
CREATE EXTREME FIRE BEHAVIOR.

&&

$$


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