000
WWUS85 KRIW 180744
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
144 AM MDT TUE JUN 18 2013

...HOT DRY WINDY AND UNSTABLE ON WEDNESDAY AHEAD OF A DRY COLD
FRONTAL PASSAGE WEDNESDAY EVENING...

.SOUTHWEST FLOW WILL INCREASE AHEAD OF AN APPROACHING TROUGH ON
WEDNESDAY. THE SOUTHWEST WIND WILL DRAW IN EXTREMELY DRY AIR FROM
THE AMERICAN SOUTHWEST WITH MINIMUM RELATIVE HUMIDITIES BELOW 10
PERCENT POSSIBLE ACROSS MUCH OF CENTRAL WYOMING. IN ADDITION...
WINDS COULD ALSO GUST FROM 25 TO 35 MPH IN THE AFTERNOON AS THE
ATMOSPHERE BECOMES UNSTABLE DURING THE HEAT OF THE DAY...MIXING
DOWN THE GUSTY WINDS AS WELL AS PRODUCING A HAINES INDEX OF
6...WHICH COULD ENCOURAGE ANY FIRES THAT DO START TO BECOME PLUME
DOMINATED. THE APPROACHING TROUGH WILL SEND THROUGH A DRY COLD
FRONT WEDNESDAY EVENING...MAINTAINING GUSTY WINDS WHILE SUDDENLY
SWITCHING THE WIND DIRECTION TO THE WEST. THE FRONT WILL OFFER NO
PRECIPITATION...HOWEVER TEMPERATURES WILL DROP BEHIND THE FRONT
AND RELATIVE HUMIDITY WILL RECOVER ABOVE 40 PERCENT WEDNESDAY NIGHT.

WYZ280-281-285-300-182200-
/O.NEW.KRIW.FW.A.0001.130619T1700Z-130620T0300Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIGHORN MOUNTAINS-CASPER MOUNTAIN-
144 AM MDT TUE JUN 18 2013

...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING FOR STRONG WIND...VERY LOW HUMIDITY...A HAINES
INDEX OF 6...AND A DRY COLD FRONTAL PASSAGE FOR FIRE WEATHER
ZONES 280...281...285 AND 300...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH FOR STRONG WIND...VERY LOW HUMIDITY...A HAINES
INDEX OF 6...AND A DRY COLD FRONTAL PASSAGE...WHICH IS IN EFFECT
FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 280...281...285 AND 300.

* WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...VERY DRY AIR WILL LIKELY BE IN PLACE ACROSS SOUTHERN
  PORTIONS OF THE WATCH AREA EARLY WEDNESDAY...SPREADING NORTH IN
  THE EARLY AFTERNOON TO NORTHERN ZONES. WINDS WILL INCREASE LATE
  IN THE MORNING AND MAY GUST OVER 25 MPH BY NOON ON WEDNESDAY.
  WINDS WILL REMAIN GUSTY THROUGH THE DAY. A SUDDEN WIND SHIFT IS
  EXPECTED IN THE EVENING AS A DRY COLD FRONT APPROACHES FROM THE
  WEST.

* RELATIVE HUMIDITY...AS LOW AS 6 PERCENT.

* TEMPERATURES...HIGHS IN THE LOW 90S.

* IMPACTS...CRITICALLY DRY FUELS...VERY LOW HUMIDITY...GUSTY
  WIND...A DRY COLD FRONTAL PASSAGE AND A HAINES INDEX OF 6 MAY
  CAUSE ANY FIRES THAT START TO QUICKLY GROW OUT OF CONTROL ON
  WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

HTTP://WEATHER.GOV/RIVERTON

000
WWUS85 KRIW 180744
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
144 AM MDT TUE JUN 18 2013

...HOT DRY WINDY AND UNSTABLE ON WEDNESDAY AHEAD OF A DRY COLD
FRONTAL PASSAGE WEDNESDAY EVENING...

.SOUTHWEST FLOW WILL INCREASE AHEAD OF AN APPROACHING TROUGH ON
WEDNESDAY. THE SOUTHWEST WIND WILL DRAW IN EXTREMELY DRY AIR FROM
THE AMERICAN SOUTHWEST WITH MINIMUM RELATIVE HUMIDITIES BELOW 10
PERCENT POSSIBLE ACROSS MUCH OF CENTRAL WYOMING. IN ADDITION...
WINDS COULD ALSO GUST FROM 25 TO 35 MPH IN THE AFTERNOON AS THE
ATMOSPHERE BECOMES UNSTABLE DURING THE HEAT OF THE DAY...MIXING
DOWN THE GUSTY WINDS AS WELL AS PRODUCING A HAINES INDEX OF
6...WHICH COULD ENCOURAGE ANY FIRES THAT DO START TO BECOME PLUME
DOMINATED. THE APPROACHING TROUGH WILL SEND THROUGH A DRY COLD
FRONT WEDNESDAY EVENING...MAINTAINING GUSTY WINDS WHILE SUDDENLY
SWITCHING THE WIND DIRECTION TO THE WEST. THE FRONT WILL OFFER NO
PRECIPITATION...HOWEVER TEMPERATURES WILL DROP BEHIND THE FRONT
AND RELATIVE HUMIDITY WILL RECOVER ABOVE 40 PERCENT WEDNESDAY NIGHT.

WYZ280-281-285-300-182200-
/O.NEW.KRIW.FW.A.0001.130619T1700Z-130620T0300Z/
NATRONA COUNTY/CASPER BLM-JOHNSON COUNTY/CASPER BLM-
SOUTH BIGHORN MOUNTAINS-CASPER MOUNTAIN-
144 AM MDT TUE JUN 18 2013

...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING FOR STRONG WIND...VERY LOW HUMIDITY...A HAINES
INDEX OF 6...AND A DRY COLD FRONTAL PASSAGE FOR FIRE WEATHER
ZONES 280...281...285 AND 300...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A FIRE
WEATHER WATCH FOR STRONG WIND...VERY LOW HUMIDITY...A HAINES
INDEX OF 6...AND A DRY COLD FRONTAL PASSAGE...WHICH IS IN EFFECT
FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING.

* AFFECTED AREA...FIRE WEATHER ZONES 280...281...285 AND 300.

* WINDS...SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* TIMING...VERY DRY AIR WILL LIKELY BE IN PLACE ACROSS SOUTHERN
  PORTIONS OF THE WATCH AREA EARLY WEDNESDAY...SPREADING NORTH IN
  THE EARLY AFTERNOON TO NORTHERN ZONES. WINDS WILL INCREASE LATE
  IN THE MORNING AND MAY GUST OVER 25 MPH BY NOON ON WEDNESDAY.
  WINDS WILL REMAIN GUSTY THROUGH THE DAY. A SUDDEN WIND SHIFT IS
  EXPECTED IN THE EVENING AS A DRY COLD FRONT APPROACHES FROM THE
  WEST.

* RELATIVE HUMIDITY...AS LOW AS 6 PERCENT.

* TEMPERATURES...HIGHS IN THE LOW 90S.

* IMPACTS...CRITICALLY DRY FUELS...VERY LOW HUMIDITY...GUSTY
  WIND...A DRY COLD FRONTAL PASSAGE AND A HAINES INDEX OF 6 MAY
  CAUSE ANY FIRES THAT START TO QUICKLY GROW OUT OF CONTROL ON
  WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

&&

$$

HTTP://WEATHER.GOV/RIVERTON