Red Flag Warning
Issued by NWS Riverton, WY

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WWUS85 KRIW 282052
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
252 PM MDT FRI AUG 28 2015

...CRITICAL FIRE WEATHER PATTERN SETTING UP FOR THE WEEKEND...

.A CRITICAL PATTERN DEVELOPING AS SOUTHWEST FLOW AHEAD OF AN
APPROACHING COLD FRONT LEADS TO WIDESPREAD HOT..DRY...UNSTABLE AND
BREEZY CONDITIONS ACROSS MUCH OF THE STATE ON SATURDAY AFTERNOON.
IT WILL ACTUALLY BE WINDIER ON SUNDAY BUT WITH SLIGHTLY HIGHER
RELATIVE HUMIDITIES...BUT IN ADDITION...THERE WILL ALSO BE
INCREASED THUNDERSTORM ACTIVITY WITH NATURAL FIRE STARTS
POSSIBLE.

WYZ280-283-289-300-290930-
/O.CON.KRIW.FW.W.0014.150829T1700Z-150831T0300Z/
NATRONA COUNTY/CASPER BLM-UPPER WIND RIVER BASIN/WIND RIVER BASIN-
GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-CASPER MOUNTAIN-
252 PM MDT FRI AUG 28 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO 9 PM
MDT SUNDAY FOR STRONG WIND...LOW HUMIDITY...HIGH HAINES INDEX...
HOT TEMPERATURES...DRY THUNDERSTORMS AND A DRY COLD FRONT
PASSAGE...

* WIND...SOUTHWEST 10 TO 15 MPH EARLY AFTERNOON ON SATURDAY AND 15
  TO 25 MPH WITH GUSTS AROUND 35 MPH IN MORE EXPOSED AND WIND
  PRONE AREAS...BECOMING MORE WIDESPREAD AFTER 1500. GUSTY WINDS
  WILL DEVELOP SOONER ON SUNDAY AT 20 TO 25 MPH WITH GUSTS TO 40
  MPH AHEAD OF A COLD FRONT... WHICH WILL PASS AROUND 2100 SUNDAY
  NIGHT.

* HUMIDITY...7 TO 15 PERCENT...RECOVERING ABOVE 30 PERCENT AFTER
  2200 SATURDAY NIGHT AND FALLING BACK TO AROUND 15 PERCENT AFTER
  1200 ON SUNDAY.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED DRY THUNDERSTORMS
  ON SUNDAY

* HAINES INDEX...6 EACH AFTERNOON

* 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 WILL
CREATE EXTREME FIRE BEHAVIOR.

&&

$$

WYZ275-276-281-282-285-287-290930-
/O.CON.KRIW.FW.W.0014.150829T1700Z-150830T0300Z/
NORTH BIG HORN BASIN/WORLAND BLM-CODY FOOTHILLS-
JOHNSON COUNTY/CASPER BLM-SOUTH BIG HORN BASIN/WORLAND BLM-
SOUTH BIGHORN MOUNTAINS-OWL CREEK MOUNTAINS-
252 PM MDT FRI AUG 28 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM MDT
SATURDAY FOR STRONG WIND...LOW HUMIDITY AND A HAINES INDEX OF 6...

* WIND...SOUTHWEST 10 TO 15 MPH WITH OCCASIONAL GUSTS TO 25 MPH
  EARLY AFTERNOON IN DEEPER BASINS AND SHELTERED AREAS ON
  SATURDAY...WIDESPREAD 15 TO 25 MPH WINDS WITH GUSTS AROUND 35
  MPH DEVELOPING AFTER 1500

* HUMIDITY...7 TO 15 PERCENT.

* HAINES INDEX...6

* 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 WILL
CREATE EXTREME FIRE BEHAVIOR.

&&

$$

WYZ277-279-290930-
/O.CON.KRIW.FW.W.0014.150829T1700Z-150830T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
252 PM MDT FRI AUG 28 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM MDT
SATURDAY FOR STRONG WIND...LOW HUMIDITY AND A HAINES INDEX OF 6...

* WIND...SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 35 MPH IN ZONE 277
  AND IN MORE EXPOSED AND WIND PRONE AREAS OF 279...BECOMING MORE
  WIDESPREAD AFTER 1500

* HUMIDITY...10 TO 15 PERCENT.

* HAINES INDEX...6

* 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 WILL
CREATE EXTREME FIRE BEHAVIOR.

&&

$$



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