Red Flag Warning 25, NWS Riverton, WY

964 
WWUS85 KRIW 271946
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
146 PM MDT SAT AUG 27 2016

...RED FLAG WARNING UNTIL 8 PM MDT TODAY...

.WEST TO SOUTHWESTERLY WIND WILL INCREASE THIS AFTERNOON ACROSS
MUCH OF THE AREA. THESE WINDS WILL COMBINE WITH LOW HUMIDITY AND
DRY FUELS TO CREATE CRITICAL FIRE WEATHER BEHAVIOR TODAY.

WYZ140-286-288-414>416-280200-
/O.CON.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
146 PM MDT SAT AUG 27 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITY...STRONG WIND GUSTS...AND CRITICALLY DRY FUELS
FOR FIRE WEATHER ZONES 286...288... 414...415 AND 416...

* WIND...WEST TO SOUTHWEST 15 TO 20 WITH GUSTS TO 30 MPH IN THE 
  AFTERNOON AND EARLY EVENING. 

* HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

WYZ277>279-280200-
/O.CON.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
146 PM MDT SAT AUG 27 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITY...STRONG WIND GUSTS...AND CRITICALLY DRY FUELS
FOR FIRE WEATHER ZONES 277...278 AND 279...

* WIND...SOUTHWEST 10 TO 15 WITH GUSTS TO 25 MPH IN THE 
  AFTERNOON AND EARLY EVENING HOURS. 

* HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

WYZ280-285-287-289-280200-
/O.CON.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
NATRONA COUNTY/CASPER BLM-SOUTH BIGHORN MOUNTAINS-
OWL CREEK MOUNTAINS-GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
146 PM MDT SAT AUG 27 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING
FOR LOW HUMIDITY...STRONG WIND GUSTS...AND CRITICALLY DRY FUELS
FOR FIRE WEATHER ZONES 280...285... 287 AND 289...

* WIND...WEST TO SOUTHWEST 10 TO 15 WITH GUSTS TO 25 MPH IN THE 
  AFTERNOON AND EARLY EVENING HOURS. 

* HUMIDITY...10 TO 15 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

030 
WWUS85 KRIW 280142
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
742 PM MDT SAT AUG 27 2016

...RED FLAG WARNING FOR YELLOWSTONE AND ABSAROKA MOUNTAINS THROUGH
SUNDAY EVENING...

.WEST TO SOUTHWEST WINDS WILL ONCE AGAIN COMBINE WITH LOW RELATIVE
HUMIDITY AND DRY FUELS FOR CRITICAL FIRE WEATHER BEHAVIOR SUNDAY
AFTERNOON AND EVENING.

WYZ288-414>416-280245-
/O.EXP.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
EAST WIND RIVER MOUNTAINS/SOUTH SHOSHONE NF-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
NORTH ZONE BRIDGER TETON NF AND GRAND TETON NP-
WEST WIND RIVER MOUNTAINS/EAST ZONE BRIDGER TETON NF-
742 PM MDT SAT AUG 27 2016

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

THE RED FLAG WARNING FOR MUCH OF WESTERN WYOMING WILL BE ALLOWED
TO EXPIRE AT 8 PM...AS WINDS HAVE BEGUN TO WEAKEN AND RH WILL
BEGIN TO SLOWLY RISE.

$$

WYZ277>279-280245-
/O.EXP.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
LINCOLN AND UINTA COUNTIES/LOWER ELEVATIONS-
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA-
742 PM MDT SAT AUG 27 2016

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

THE RED FLAG WARNING FOR SOUTHERN WYOMING WILL BE ALLOWED TO
EXPIRE AT 8 PM...AS WINDS HAVE BEGUN TO WEAKEN AND RH WILL BEGIN
TO SLOWLY RISE.

$$

WYZ280-285-287-289-280245-
/O.EXP.KRIW.FW.W.0025.000000T0000Z-160828T0200Z/
NATRONA COUNTY/CASPER BLM-SOUTH BIGHORN MOUNTAINS-
OWL CREEK MOUNTAINS-GRANITE/GREEN/FERRIS/RATTLESNAKE MOUNTAINS-
742 PM MDT SAT AUG 27 2016

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

THE RED FLAG WARNING FOR PORTIONS OF CENTRAL WYOMING WILL BE
ALLOWED TO EXPIRE AT 8 PM...AS WINDS HAVE BEGUN TO WEAKEN AND RH
WILL BEGIN TO SLOWLY RISE.

$$

WYZ140-286-281200-
/O.EXT.KRIW.FW.W.0025.000000T0000Z-160829T0300Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
742 PM MDT SAT AUG 27 2016

...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT SUNDAY FOR LOW
HUMIDITY...BREEZY WINDS...AND CRITICALLY DRY FUELS FOR FIRE
WEATHER ZONES 140 AND 286...

* WIND...WEST TO SOUTHWEST 10 TO 15 WITH FREQUENT GUSTS TO AROUND
  25 MPH. SLIGHTLY HIGHER WINDS IN THE ABSAROKA MOUNTAINS AND ON
  RIDGE TOPS. 

* HUMIDITY...12 TO 17 PERCENT SUNDAY AFTERNOON AND EVENING.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

21

606 
WWUS85 KRIW 280602
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1202 AM MDT SUN AUG 28 2016

...RED FLAG WARNING FOR YELLOWSTONE AND THE ABSAROKA MOUNTAINS
THROUGH THIS EVENING...

.WEST TO SOUTHWEST WINDS WILL ONCE AGAIN COMBINE WITH LOW
RELATIVE HUMIDITY AND DRY FUELS FOR CRITICAL FIRE WEATHER
BEHAVIOR THIS AFTERNOON AND EVENING.

WYZ140-286-282200-
/O.CON.KRIW.FW.W.0025.000000T0000Z-160829T0300Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
1202 AM MDT SUN AUG 28 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR LOW HUMIDITY...BREEZY WINDS...AND CRITICALLY DRY FUELS FOR
FIRE WEATHER ZONES 140 AND 286...

* WIND...WEST TO SOUTHWEST 10 TO 15 WITH FREQUENT GUSTS TO 
  AROUND25 MPH. SLIGHTLY HIGHER WINDS IN THE ABSAROKA MOUNTAINS 
  AND ON RIDGE TOPS. 

* HUMIDITY...12 TO 17 PERCENT THIS AFTERNOON AND EVENING.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

736 
WWUS85 KRIW 281944
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
144 PM MDT SUN AUG 28 2016

...RED FLAG WARNING FOR YELLOWSTONE AND THE ABSAROKA MOUNTAINS
THROUGH THIS EVENING...

.WEST TO SOUTHWEST WINDS WILL ONCE AGAIN COMBINE WITH LOW
RELATIVE HUMIDITY AND DRY FUELS FOR CRITICAL FIRE WEATHER
BEHAVIOR THIS AFTERNOON AND EVENING.

WYZ140-286-290300-
/O.CON.KRIW.FW.W.0025.000000T0000Z-160829T0300Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
144 PM MDT SUN AUG 28 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR LOW HUMIDITY...BREEZY WINDS...AND CRITICALLY DRY FUELS FOR
FIRE WEATHER ZONES 140 AND 286...

* WIND...WEST TO SOUTHWEST 10 TO 15 WITH FREQUENT GUSTS TO 
  AROUND 25 MPH. SLIGHTLY HIGHER WINDS IN THE ABSAROKA MOUNTAINS 
  AND ON RIDGE TOPS. 

* HUMIDITY...12 TO 17 PERCENT THIS AFTERNOON AND EVENING.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS STRONGLY DISCOURAGED.

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.

&&

$$

023 
WWUS85 KRIW 290122
RFWRIW

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
722 PM MDT SUN AUG 28 2016


WYZ140-286-290230-
/O.CAN.KRIW.FW.W.0025.000000T0000Z-160829T0300Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS/NORTH SHOSHONE NF-
722 PM MDT SUN AUG 28 2016

...RED FLAG WARNING IS CANCELLED FOR FIRE WEATHER ZONES 140 AND
286...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE RED
FLAG WARNING. RELATIVE HUMIDITY AND WINDS ARE NO LONGER EXPECTED
TO MEET WARNING CRITERIA...AND THUS THE RED FLAG WARNING HAS BEEN
CANCELLED.

$$

21

Area Forecast Discussion
National Weather Service Riverton WY
1034 PM MDT FRI AUG 26 2016

.Short Term...Tonight Through Saturday

An upper level low pressure trough passing through western and
central Wyoming will bring scattered showers and thunderstorms...
most numerous over the higher terrain...through the evening hours.
some showers will linger over the higher terrain after midnight...
but drying will be the trend through the late night and morning
hours as dry and warmer air moves in. winds are expected to pick
up by noon out of the west to southwest and become gusty. relative
humidity will drop significantly.

.Long Term...Saturday Night Through Friday

Saturday Night through Monday will be dry...warmer and breezy to
windy. tuesday looks still warmer but not as windy with some
clouds moving north up from the great basin. Some showers and
isolated thunderstorms may develop over the southwest Tuesday
afternoon and Tuesday night. The threat of showers and
thunderstorms should spread north across the west and central
areas Wednesday and Wednesday night. Convection will become more
likely Thursday and Friday. the increased clouds and
precipitation will hold down temperatures Thursday and Friday.

&&

.Aviation.../06Z Issuance/

Cannot rule out patchy fog through 15Z where rain occurred Friday
evening such as at CPR terminal. However confidence is too low and
overall boundary layer is not high enough to include at KCPR for
now. Otherwise expect VFR conditions through the period with
variable high level cloudiness. Breezy west to southwest winds will
be observed Saturday afternoon and evening in many locations.

&&

.Fire Weather...

...Fire Weather Watch noon to 8:00 PM MDT Saturday for much of
western and central Wyoming...

An upper level low pressure trough passing through western and
central Wyoming will bring scattered showers and thunderstorms...
most numerous over the higher terrain...through the evening hours.
some showers will linger over the higher terrain after midnight...
but drying will be the trend through the late night and morning
hours as dry and warmer air moves in. winds are expected to pick
up by noon out of the west to southwest and become gusty. relative
humidity will drop significantly. the weekend and early next week
will be warmer dry and breezy.

&&

.RIW Watches/Warnings/Advisories...
Fire Weather Watch from Saturday afternoon through Saturday
evening for WYZ276>281-283-285>289-414>416.

&&

SHORT TERM...C.Baker
LONG TERM...C.Baker
AVIATION...WM
FIRE WEATHER...C.Baker

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
154 PM MDT FRI AUG 26 2016

WYZ001>020-022>030-271100-
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS-
NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN-
SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS-
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE-
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-
NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY-
SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS-
UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY-
ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY-
154 PM MDT FRI AUG 26 2016

...FIRE WEATHER WATCH FOR MUCH OF CENTRAL AND WESTERN WYOMING IN
EFFECT FROM 12 NOON SATURDAY THROUGH 8 PM SATURDAY EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL
WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SHOWERS AND THUNDERSTORMS ANTICIPATED THROUGH THE DAY...WITH
COVERAGE STEADILY INCREASING THIS AFTERNOON. GUSTY WIND...HEAVY
RAIN...AND SMALL HAIL WILL BE POSSIBLE WITH STORMS TODAY. LIGHT
SNOW WILL BE POSSIBLE ACROSS THE NORTHERN MOUNTAINS OVERNIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY...WARM...DRY AND WIND CONDITIONS WILL BE PRESENT ACROSS
SOUTHERN AND WESTERN WYOMING. THIS MAY RESULT IN ELEVATED TO
POSSIBLY CRITICAL FIRE WEATHER CONDITIONS.

WEDNESDAY AND THURSDAY...SLIGHT CHANCES OF THUNDERSTORMS SOUTH AND
WEST. BREEZY AND WARM CONDITIONS WILL BRING ELEVATED FIRE WEATHER
CONDITIONS ACROSS THE SOUTH AND CENTRAL.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY HAIL SIZES AND WIND GUSTS
OVER 45 MPH.

TEAM RIVERTON