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Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE RIVERTON WY
1226 PM MDT FRI MAY 6 2016

WYZ001>020-022>030-071100-
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-
1226 PM MDT FRI MAY 6 2016

...FLOOD WATCH OWL CREEK AND BRIDGER MOUNTAINS AND CANYONS...LANDER
FOOTHILLS...AND WIND RIVER BASIN SATURDAY MORNING THROUGH
THE DAY SUNDAY...

...WINTER STORM WARNING UNTIL 6 AM MDT SUNDAY FOR THE WIND RIVER
AND ABSAROKA MOUNTAINS...


THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL
WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SMOKE FROM THE ALBERTA FIRES WILL BLANKET MUCH OF NORTHERN WYOMING
TODAY. OTHERWISE...ISOLATED TO SCATTERED THUNDERSTORMS THIS
AFTERNOON. A FEW COULD BE STRONG WITH HEAVY RAIN...SMALL
HAIL...FREQUENT LIGHTNING...AND GUSTY WINDS...ESPECIALLY ACROSS
EASTERN FREMONT AND ALL OF NATRONA COUNTIES AS WELL AS ACROSS FAR
WESTERN WYOMING. HEAVY SNOWFALL WILL DEVELOP ABOVE 9000 FEET IN
THE WIND RIVER AND ABSAROKA MOUNTAINS ABOVE 9000 FEET.

TONIGHT...RAIN SHOWERS...HEAVY AT TIMES...INCREASE IN COVERAGE
ACROSS THE REGION...WITH SNOW LEVELS AROUND 9000 FEET. HEAVY RAIN
ON MOUNTAIN SNOWPACK MAY START TO ELEVATE FLOODING CONCERNS AS
SNOW LEVELS LOWER TO NEAR 8500 FEET SATURDAY MORNING. OVER THE
WIND RIVER AND ABSAROKA MOUNTAINS EXPECT HEAVY SNOWFALL TO
CONTINUE ABOVE 9000 FEET.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SATURDAY MODERATE TO HEAVY RAIN AT TIMES CONTINUES ACROSS THE
REGION...WITH HEAVY SNOW FALLING AT LEVELS FLUCTUATING BETWEEN
8500 AND 9500 FEET. SEE THE FLASH FLOOD WATCH PRODUCT FOR MORE
DETAILS ON POTENTIAL FLOODING OF SMALL STREAMS AND CREEKS IN THE
LANDER FOOTHILLS...WIND RIVER BASIN...AND OWL CREEK AND BRIDGER
MOUNTAINS AND CANYONS. SEE THE WINTER STORM WARNING FOR MORE
DETAILS ON THE HEAVY SNOWFALL EXPECTED IN THE WIND RIVER AND
ABSAROKA MOUNTAINS ABOVE 9000 FEET EXPECTED SATURDAY AND ALSO SUNDAY.

SUNDAY...LINGERING RAIN SHOWERS EAST OF THE DIVIDE WITH LESSER
COVERAGE WEST. SNOW WILL CONTINUE IN THE WIND RIVER AND ABSAROKA
MOUNTAINS.

MONDAY NIGHT THROUGH TUESDAY...A CHANCE OF RAIN SHOWERS WITH SNOW
IN THE MOUNTAINS.


.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY FLOODING...HAIL...WIND GUSTS
OVER 45 MPH AS WELL AS ANY HEAVY SNOW ACCUMULATION IN THE HIGHER
MOUNTAINS.

$$



Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE RIVERTON WY
116 PM MDT FRI MAY 6 2016

...HEAVY RAIN BEGINNING TONIGHT...LASTING THROUGH SATURDAY
AFTERNOON MAY CAUSE FLOODING OF SMALL STREAMS AND CREEKS OVER THE
OWL CREEK AND BRIDGER MOUNTAINS...ALONG THE LANDER FOOTHILLS...
AND ACROSS THE SOUTHERN END OF THE WIND RIVER BASIN...

.RAINFALL WILL START ACROSS THE SOUTHERN HALF OF THE BIGHORN
BASIN AND INTO THE WIND RIVER BASIN AND ALONG THE LANDER
FOOTHILLS BY THIS AFTERNOON...INCREASING IN INTENSITY BY THIS
EVENING...CONTINUING THROUGH SATURDAY NIGHT WITH RAINFALL HEAVY AT
TIMES...THEN TAPERING OFF SOME ON SUNDAY. TOTAL RAINFALL AMOUNTS
THROUGH SUNDAY MORNING ARE FORECASTED TO BE 2 TO 3 INCHES WITH
SOME AREAS ALONG THE LANDER FOOTHILLS AND EASTERN WIND RIVER
MOUNTAINS RECEIVING UP TO 4 AND A HALF INCHES.

SNOW LEVELS WITH THIS EVENT WILL START OUT ABOVE 10000 FEET THIS
AFTERNOON...DROPPING TO AROUND 8500 FEET BY SATURDAY MORNING...
THEN BOUNCING BETWEEN 8500 AND 9500 FEET THROUGH SUNDAY MORNING.

RAINFALL AND SNOWMELT RUNOFF WILL COMBINE FORCES SATURDAY MORNING
TO CAUSE RAPID RISES OF SMALL STREAMS AND CREEKS ALONG THE LANDER
FOOTHILLS AS WELL ALONG THE LOWER ELEVATIONS OF THE SOUTHERN WIND
RIVER BASIN AND THROUGH WIND RIVER CANYON. SMALL STREAMS AND
CREEKS ARE EXPECTED TO RUN AT HIGH LEVELS THROUGH SUNDAY MORNING.
ADDITIONALLY...MUD SLIDES AND ROCK FALL WILL BE AN ISSUE IN
CANYON AREAS...ESPECIALLY THROUGH WIND RIVER CANYON.

WYZ017-018-071815-
/O.CON.KRIW.FA.A.0001.160507T1200Z-160509T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WIND RIVER BASIN-LANDER FOOTHILLS-
INCLUDING THE CITIES OF...RIVERTON...SHOSHONI...LANDER
116 PM MDT FRI MAY 6 2016

...FLOOD WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY AFTERNOON...

THE FLOOD WATCH CONTINUES FOR

* A PORTION OF CENTRAL WYOMING...INCLUDING THE FOLLOWING AREAS...
   LANDER FOOTHILLS AND WIND RIVER BASIN.

* FROM SATURDAY MORNING THROUGH SUNDAY AFTERNOON

* HEAVY RAIN LEADING TO EXCESSIVE RAINFALL AND SNOWMELT RUNOFF
  WILL CAUSE RAPID RISES IN SMALL CREEKS AND STREAMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.

YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.

&&

$$




National Weather Service
Central Region Headquarters
Kansas City, Missouri
Last Modified: March 29, 2004
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