Red Flag Warning
Issued by NWS Riverton, WY

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000
WWUS85 KRIW 290830
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
230 AM MDT SAT AUG 29 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 THIS 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.

WYZ280-283-289-300-292200-
/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-
230 AM MDT SAT AUG 29 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING 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 THIS AFTERNOON 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 TONIGHT 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.

&&

$$

WYZ275-276-281-282-285-287-292200-
/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-
230 AM MDT SAT AUG 29 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING 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 TODAY...WIDESPREAD
  15 TO 25 MPH WINDS WITH GUSTS AROUND 35 MPH DEVELOPING AFTER
  1500 ELSEWHERE.

* 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.

&&

$$

WYZ277-279-292200-
/O.CON.KRIW.FW.W.0014.150829T1700Z-150830T0300Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
230 AM MDT SAT AUG 29 2015

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING 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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