Red Flag Warning
Issued by NWS Riverton, WY

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000
WWUS85 KRIW 052123
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
323 PM MDT SAT JUL 5 2014

...HOT AND DRY CONDITIONS WILL LEAD TO DANGEROUS FIRE BEHAVIOR
THIS AFTERNOON AND EVENING...

.AN AREA OF HIGH PRESSURE WILL SHIFT WEST TONIGHT...TAKING THE
HOTTER CONDITIONS WITH IT. IN ADDITION...A DRY COLD FRONT WILL
DROP SOUTH TONIGHT CAUSING A SLIGHT WIND SHIFT BUT LEADING TO
GOOD RH RECOVERY. IT IS FAIRLY UNSTABLE AS THE RIDGE SHIFTS
FURTHER WEST...LEADING TO A HAINES INDEX OF 6 FOR THE
AFTERNOON...THIS WILL ALSO IMPROVE SLIGHTLY TOMORROW TO A 5.

CRITICAL CONDITIONS ARE EXPECTED TO REMAIN IN ZONE 280...AND THE
SOUTHERN PORTION OF ZONE 281 SOUTH OF KAYCEE THROUGH 9PM TONIGHT.

WYZ280-060300-
/O.CON.KRIW.FW.W.0001.000000T0000Z-140706T0300Z/
NATRONA COUNTY/CASPER BLM-
323 PM MDT SAT JUL 5 2014

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR HIGH HAINES INDEX...A DRY COLD FRONT...GUSTY WIND AND VERY LOW
RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 280...

* AFFECTED AREA...FIRE WEATHER ZONE 280.

* WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS UP TO 30 MPH
  ...ESPECIALLY NEAR COLLAPSING VIRGA SHOWERS.

* RELATIVE HUMIDITY...AS LOW AS 7 PERCENT.

* HAINES INDEX...HAINES INDEX OF 6 OR HIGH PROBABILITY OF PLUME
  DOMINATED FIRE GROWTH.

* IMPACTS...THE COMBINATION OF GUSTY WIND WITH HOT AND DRY
  CONDITIONS AND A DRY COLD FRONT WILL INCREASE THE BEHAVIOR OF
  ANY EXISTING FIRES OR MAKE IT EASIER FOR FIRES TO START AND GROW
  OUT OF CONTROL.

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 CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

WYZ281-060300-
/O.CON.KRIW.FW.W.0001.000000T0000Z-140706T0300Z/
JOHNSON COUNTY/CASPER BLM-
323 PM MDT SAT JUL 5 2014

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR HIGH HAINES INDEX...A DRY COLD FRONT...GUSTY WIND AND VERY LOW
RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 281 SOUTH OF KAYCEE...

* AFFECTED AREA...FIRE WEATHER ZONE 281.

* WINDS...NORTHWEST 10 TO 15 MPH WITH GUSTS UP TO 30 MPH
  ...ESPECIALLY NEAR COLLAPSING VIRGA SHOWERS.

* RELATIVE HUMIDITY...AS LOW AS 9 PERCENT.

* HAINES INDEX...HAINES INDEX OF 6 OR HIGH PROBABILITY OF PLUME
  DOMINATED FIRE GROWTH.

* IMPACTS...THE COMBINATION OF GUSTY WIND WITH HOT AND DRY
  CONDITIONS AND A DRY COLD FRONT WILL INCREASE THE BEHAVIOR OF
  ANY EXISTING FIRES OR MAKE IT EASIER FOR FIRES TO START AND GROW
  OUT OF CONTROL.

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 CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

HTTP://WEATHER.GOV/RIVERTON






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