Red Flag Warning
Issued by NWS Riverton, WY

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WWUS85 KRIW 300910
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
310 AM MDT SUN AUG 30 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 TODAY...BUT WITH SLIGHTLY HIGHER RELATIVE HUMIDITIES.
HOWEVER...TODAY WILL ALSO BRING AN INCREASE IN THUNDERSTORM
ACTIVITY WITH NATURAL FIRE STARTS POSSIBLE.

WYZ280-281-283-285-289-300-302200-
/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-
310 AM MDT SUN AUG 30 2015

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
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 THIS 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
  TODAY.

* 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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