River Flood Warning 8, NWS Riverton, WY

737 
WGUS85 KRIW 242203
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
403 PM MDT FRI JUN 24 2011

...THE FLOOD WARNING CONTINUES FOR THE FOLOWING RIVERS IN WYOMING...

  WIND RIVER NEAR DUBOIS AFFECTING FREMONT COUNTY.
  WIND RIVER NEAR CROWHEART AFFECTING FREMONT COUNTY.
  WIND RIVER AT RIVERTON AFFECTING FREMONT COUNTY.

.ACCELERATED SNOWMELT RUNOFF CONTINUES OVER THE NORTHERN 
WIND RIVER BASIN. RAINSHOWERS ARE STILL EXPECTED TONIGHT 
OVER THE NORTH WIND RIVER BASIN. ONE HALF INCH OF RAIN IS 
STILL FORECASTED OVER THE AREA OVERNIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE SHOULD CONTINUE TO MONITOR POSSIBLE FLUCTUATING RIVER LEVELS.

GRAPHICAL FORECASTS ARE AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=RIW  (ALL LOWER CASE)

THE NEXT STATEMENT WILL BE ISSUED BY 10 PM FRIDAY NIGHT.

&&

WYC013-251003-
/O.EXT.KRIW.FL.W.0007.000000T0000Z-110628T0015Z/
/DUBW4.1.SM.110624T0845Z.110625T1200Z.110627T1815Z.NR/
403 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR DUBOIS.
* UNTIL MONDAY EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT  3:15 PM FRIDAY THE STAGE WAS 5.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 5.0 FEET. 
* FORECAST...CREST NEAR 5.4 FEET BY EARLY SATURDAY MORNING...THEN
  RECEDE TO NEAR 5.1 FEET BY SATURDAY AFTERNOON. THE RIVER WILL FALL 
  BELOW FLOOD STAGE BY LATE SUNDAY MORNING.
* IMPACT...AT 5.5 FEET...LOW LAND FLOODING INTENSIFIES AND BECOMES 
  MOREWIDE SPREAD IN AND AROUND DUBOIS..
* IMPACT...AT 5.5 FEET...RECORD FLOW---1940 CFS (6/8/1972)..
* IMPACT...AT 5.0 FEET...FLOOD STAGE.  MINOR LOW LEVEL FLOODING 
  POSSIBLE UPSTREAM AND DOWNSTREAM. FLOODING OF LOW AREAS IN DUBOIS..
* IMPACT...AT 4.5 FEET...BANKFULL STAGE..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 5.4 FEET 
  ON JUN 16 1974.

$$

WYC013-251003-
/O.EXT.KRIW.FL.W.0008.110625T1800Z-110627T0607Z/
/CROW4.1.SM.110625T1800Z.110625T1800Z.110627T0007Z.NR/
403 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR CROWHEART.
* FROM SATURDAY AFTERNOON TO LATE SUNDAY NIGHT...OR UNTIL THE WARNING
  IS CANCELLED.
* AT  3:15 PM FRIDAY THE STAGE WAS 9.9 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY SATURDAY MORNING 
  AND WILL CREST NEAR 10.3 FEET NEAR NOON ON SATURDAY. 
* FORECAST...TO RECEDE BELOW FLOOD STAGE EARLY SUNDAY MORNING AND 
  CREST NEAR FLOOD STAGE BY NOON SUNDAY.
* FLOOD STAGE IS 10.0 FEET. 
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MINOR LOWLAND AND RANCHLAND 
  FLOODING UPSTREAM AND DOWNSTREAM..
* IMPACT...AT 9.0 FEET...BANKFULL STAGE.  RIVER MAY OVERTOP ITS BANKS 
  ALONG LOW LYING AREAS. WATER NEAR BASE OF GAGE HOUSE DOOR..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.3 FEET
  ON JUN 11 1996.

$$

WYC013-251003-
/O.EXT.KRIW.FL.W.0009.110625T0041Z-000000T0000Z/
/WDRW4.1.SM.110625T0041Z.110626T0600Z.000000T0000Z.NR/
403 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER AT RIVERTON.
* UNTIL FURTHER NOTICE...OR UNTIL THE WARNING IS CANCELLED.
* AT 3:15 PM FRIDAY THE STAGE WAS 8.8 FEET. 
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 9.0 FEET. 
* FORECAST...RISE ABOVE FLOOD STAGE BY THIS EVENING AND CONTINUE TO 
  RISE TO NEAR 9.8 FEET BY EARLY SATURDAY MORNING.
* FORECAST...CREST NEAR 10.2 FEET BY EARLY SUNDAY MORNING. 
* IMPACT...AT 10.0 FEET...HIGHWAY 789 IS USUALLY SAND LEVEED BY WYDOT 
  ON THE NORTH SIDE OF THE RIVER. THE HIGHWAY REMAINS OPEN.EXTENSIVE 
  AGRICULTURAL FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE.   
  WATER BEGINS TO ENCROACH HOMES ALONG THE RIGHT BANK..
* IMPACT...AT 9.0 FEET...FLOOD STAGE. MINOR FLOODING ALONG THE RIGHT 
  AND LEFT BANKS UPSTREAM OF THE HIGHWAY 789 BRIDGE.  AGRICULTURAL 
  FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE ALONG LEFT BANK 
  INTENSIFIES. .
* IMPACT...AT 8.0 FEET...BANKFULL STAGE. MINOR FLOODING DOWNSTREAM 
  ALONG LEFT BANK NEAR BLACK BRIDGE BEGINS. .
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.1 FEET
  ON JUN 10 1981.

$$

750 
WGUS85 KRIW 250403
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1003 PM MDT FRI JUN 24 2011

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN WYOMING...

  WIND RIVER NEAR DUBOIS AFFECTING FREMONT COUNTY.
  WIND RIVER NEAR CROWHEART AFFECTING FREMONT COUNTY.
  WIND RIVER AT RIVERTON AFFECTING FREMONT COUNTY.

.ACCELERATED SNOWMELT RUNOFF CONTINUES ACROSS THE NORTHERN
WIND RIVER BASIN. ONLY SCATTERED SHOWERS MOVED OVER THE
UPPER WIND RIVER BASIN FRIDAY AFTERNOON AND EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE SHOULD CONTINUE TO MONITOR POSSIBLE FLUCTUATING RIVER LEVELS.

GRAPHICAL FORECASTS ARE AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=RIW  (ALL LOWER CASE)

THE NEXT STATEMENT WILL BE ISSUED AROUND 10 AM SATURDAY MORNING 

&&

WYC013-251603-
/O.CON.KRIW.FL.W.0007.000000T0000Z-110627T0111Z/
/DUBW4.1.SM.110624T0845Z.110625T1200Z.110626T1911Z.NO/
1003 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR DUBOIS.
* UNTIL SUNDAY EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT  9:15 PM FRIDAY THE STAGE WAS 4.9 FEET. 
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 5.0 FEET. 
* FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CREST TO 
  TO NEAR 5.3 FEET BY EARLY SATURDAY MORNING. THE RIVER WILL FALL BELOW 
  FLOOD STAGE BY SATURDAY EARLY AFTERNOON...THEN FLUCTUATE AROUND FLOOD
  STAGE THROUGH SUNDAY AFTERNOON.
* IMPACT...AT 5.5 FEET...LOW LAND FLOODING INTENSIFIES AND BECOMES 
  MOREWIDE SPREAD IN AND AROUND DUBOIS..
* IMPACT...AT 5.0 FEET...FLOOD STAGE.  MINOR LOW LEVEL FLOODING 
  POSSIBLE UPSTREAM AND DOWNSTREAM. FLOODING OF LOW AREAS IN DUBOIS..
* IMPACT...AT 4.5 FEET...BANKFULL STAGE..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 5.2 FEET 
  ON JUN 18 1971.

$$

WYC013-251603-
/O.CON.KRIW.FL.W.0008.110625T1800Z-110627T0113Z/
/CROW4.1.SM.110625T1800Z.110625T1800Z.110626T1913Z.NR/
1003 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR CROWHEART.
* FROM SATURDAY AFTERNOON TO SUNDAY EVENING...OR UNTIL THE WARNING IS
  CANCELLED.
* AT  9:15 PM FRIDAY THE STAGE WAS 9.7 FEET. 
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 10.0 FEET. 
* FORECAST...RISE ABOVE FLOOD STAGE BY SATURDAY MORNING AND CREST TO NEAR 
  10.2 FEET BY EARLY SATURDAY AFTERNOON...THEN FLUCTUATE AROUND FLOOD STAGE
  THROUGH SUNDAY AFTERNOON. 
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MINOR LOWLAND AND RANCHLAND 
  FLOODING UPSTREAM AND DOWNSTREAM..
* IMPACT...AT 9.0 FEET...BANKFULL STAGE.  RIVER MAY OVERTOP ITS BANKS 
  ALONG LOW LYING AREAS. WATER NEAR BASE OF GAGE HOUSE DOOR..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.3 FEET
  ON JUN 11 1996.

$$

WYC013-251603-
/O.CON.KRIW.FL.W.0009.000000T0000Z-000000T0000Z/
/WDRW4.1.SM.110625T0238Z.110626T1200Z.000000T0000Z.NR/
1003 PM MDT FRI JUN 24 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER AT RIVERTON.
* UNTIL FURTHER NOTICE...OR UNTIL THE WARNING IS CANCELLED.
* AT 9:15 PM FRIDAY THE STAGE WAS 9.1 FEET. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 9.0 FEET. 
* FORECAST...THE RIVER WILL CONTINUE RISING AND CREST TO NEAR 9.8 
  FEET BY SATURDAY MORNING
* FORECAST...THE RIVER WILL CREST AGAIN AT 10.2 FEET BY SUNDAY MORNING...
  THEN FLUCTUATE BETWEEN 9.0 AND 9.7 FEET THROUGH MONDAY MORNING.  
* IMPACT...AT 10.0 FEET...HIGHWAY 789 IS USUALLY SAND LEVEED BY WYDOT 
  ON THE NORTH SIDE OF THE RIVER. THE HIGHWAY REMAINS OPEN.EXTENSIVE 
  AGRICULTURAL FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE.   
  WATER BEGINS TO ENCROACH HOMES ALONG THE RIGHT BANK..
* IMPACT...AT 9.0 FEET...FLOOD STAGE. MINOR FLOODING ALONG THE RIGHT 
  AND LEFT BANKS UPSTREAM OF THE HIGHWAY 789 BRIDGE.  AGRICULTURAL 
  FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE ALONG LEFT BANK 
  INTENSIFIES. .
* IMPACT...AT 8.0 FEET...BANKFULL STAGE. MINOR FLOODING DOWNSTREAM 
  ALONG LEFT BANK NEAR BLACK BRIDGE BEGINS. .
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.1 FEET
  ON JUN 10 1981.

$$
JTFAHEY

254 
WGUS85 KRIW 251608
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1008 AM MDT SAT JUN 25 2011

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN WYOMING...

  WIND RIVER NEAR DUBOIS AFFECTING FREMONT COUNTY.
  WIND RIVER NEAR CROWHEART AFFECTING FREMONT COUNTY.
  WIND RIVER AT RIVERTON AFFECTING FREMONT COUNTY.

.ACTIVE SNOWMELT RUNOFF WILL CONTINUE SATURDAY AFTERNOON AS TEMPERATURES 
AT THE 9500 FOOT ELEVATION ARE EXPECTED TO REACH THE LOWER 60S.
COOLER AFTERNOON MOUNTAIN TEMPERATURES ARE EXPECTED SUNDAY AND MONDAY
WHICH WILL SLOW DOWN THE SNOWMELT RUNOFF. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE SHOULD CONTINUE TO MONITOR POSSIBLE FLUCTUATING RIVER LEVELS.

GRAPHICAL FORECASTS ARE AVAILABLE AT:
HTTP://WATER.WEATHER.GOV/AHPS2/INDEX.PHP?WFO=RIW  (ALL LOWER CASE)

THE NEXT STATEMENT WILL BE ISSUED AROUND 10 AM SUNDAY MORNING. 

&&

WYC013-261608-
/O.CON.KRIW.FL.W.0007.000000T0000Z-110626T2125Z/
/DUBW4.1.SM.110624T0845Z.110625T1300Z.110626T1525Z.NO/
1008 AM MDT SAT JUN 25 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR DUBOIS.
* AT  9:15 AM SATURDAY THE STAGE WAS 5.1 FEET. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 5.0 FEET. 
* FORECAST...THE RIVER WILL CONTINUE TO FLUCTUATE NEAR FLOOD STAGE 
  THROUGH SUNDAY AFTERNOON...THEN REMAIN BELOW FLOOD STAGE AFTER SUNDAY
  AFTERNOON. 
* IMPACT...AT 5.5 FEET...LOW LAND FLOODING INTENSIFIES AND BECOMES 
  MOREWIDE SPREAD IN AND AROUND DUBOIS..
* IMPACT...AT 5.0 FEET...FLOOD STAGE.  MINOR LOW LEVEL FLOODING 
  POSSIBLE UPSTREAM AND DOWNSTREAM. FLOODING OF LOW AREAS IN DUBOIS..
* IMPACT...AT 4.5 FEET...BANKFULL STAGE..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 5.1 FEET 
  ON MAY 16 2001.

$$

WYC013-260600-
/O.CON.KRIW.FL.W.0008.110626T0000Z-110626T0600Z/
/CROW4.1.SM.110626T0000Z.110626T0000Z.110626T0000Z.NO/
1008 AM MDT SAT JUN 25 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER NEAR CROWHEART.
* AT 9:15 AM SATURDAY THE STAGE WAS 9.8 FEET. 
* FLOOD STAGE IS 10.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO CREST TO NEAR FLOOD STAGE THIS 
  AFTERNOON...THEN FALL BELOW FLOOD STAGE SATURDAY EVENING.
* FORECAST...THE RIVER IS EXPECTED TO REMAIN BELOW FLOOD STAGE SATURDAY 
  EVENING THROUGH SUNDAY.  
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MINOR LOWLAND AND RANCHLAND 
  FLOODING UPSTREAM AND DOWNSTREAM..
* IMPACT...AT 9.0 FEET...BANKFULL STAGE.  RIVER MAY OVERTOP ITS BANKS 
  ALONG LOW LYING AREAS. WATER NEAR BASE OF GAGE HOUSE DOOR..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.0 FEET
  ON JUN 24 1971.

$$

WYC013-261608-
/O.CON.KRIW.FL.W.0009.000000T0000Z-000000T0000Z/
/WDRW4.1.SM.110625T0238Z.110626T1200Z.000000T0000Z.NO/
1008 AM MDT SAT JUN 25 2011

THE FLOOD WARNING CONTINUES FOR
  THE WIND RIVER AT RIVERTON.
* UNTIL FURTHER NOTICE...OR UNTIL THE WARNING IS CANCELLED.
* AT 9:15 AM SATURDAY THE STAGE WAS 9.5 FEET. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 9.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO CREST NEAR 9.8 FEET BY SUNDAY 
  MORNING...THEN FLUCTUATE NEAR FLOOD STAGE THROUGH MONDAY MORNING. 
* IMPACT...AT 10.0 FEET...HIGHWAY 789 IS USUALLY SAND LEVEED BY WYDOT 
  ON THE NORTH SIDE OF THE RIVER. THE HIGHWAY REMAINS OPEN.EXTENSIVE 
  AGRICULTURAL FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE.   
  WATER BEGINS TO ENCROACH HOMES ALONG THE RIGHT BANK..
* IMPACT...AT 9.0 FEET...FLOOD STAGE. MINOR FLOODING ALONG THE RIGHT 
  AND LEFT BANKS UPSTREAM OF THE HIGHWAY 789 BRIDGE.  AGRICULTURAL 
  FLOODING DOWNSTREAM OF RIVERTON NEAR BLACK BRIDGE ALONG LEFT BANK 
  INTENSIFIES. .
* IMPACT...AT 8.0 FEET...BANKFULL STAGE. MINOR FLOODING DOWNSTREAM 
  ALONG LEFT BANK NEAR BLACK BRIDGE BEGINS. .
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 9.9 FEET 
  ON JUN 16 1995.

$$
JTFAHEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
324 AM MDT FRI JUN 24 2011

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT

ANOTHER ROUND OF THUNDERSTORMS...SOME SEVERE...EXPECTED TODAY AS
THE ATMOSPHERE DESTABILIZES AGAIN THIS AFTERNOON. LIFTED INDICIES
ARE FORECAST TO DROP WELL BELOW ZERO OVER THE ENTIRE STATE AS
EARLY AS 15Z. CAPE VALUES COULD RANGE FROM 1000 TO 2000 J/KG WITH
SURFACE HEATING THIS AFTERNOON. DEWPOINTS WILL REMAIN IN THE 40S
AND 50S IN THE SOUTHERLY FLOW AHEAD OF THE TROUGH...AMPLE
AVAILABLE MOISTURE FOR THIS AREA. AND 40 TO 50 KT OF 0-6KM SHEAR
WILL ENCOURAGE AN ENVIRONMENT FAVORABLE FOR SEVERE THUNDERSTORMS.
PRIMARY THREAT WITH THESE STORMS WILL BE STRONG WIND AND
HAIL...BUT THERE IS AN ADDED THREAT OF FLOODING DUE TO THE FACT
THAT SPRING RUNOFF IS PEAKING. MANY RIVERS ARE RUNNING VERY HIGH
AND CLOSE TO BANKFULL.

SATURDAY AND SUNDAY WILL ALSO BE UNSTABLE. THUNDERSTORMS ARE
EXPECTED ON THESE DAYS AS WELL...THOUGH THE STORMS WILL BE LESS
SEVERE AS THE BETTER INSTABILITY SHIFTS EAST.

.LONG TERM...MONDAY THROUGH FRIDAY

MAINLY DRY CONDITIONS EXPECTED MONDAY AND TUESDAY WITH SEASONABLY
COOL WEATHER LINGERING EAST OF THE DIVIDE MONDAY...AND MORE
SUMMER-LIKE TEMPERATURES IN THE 80S TO NEAR 90 ON TAP FOR THE VALLEYS
AND BASINS ON TUESDAY. THE MAIN WEATHER MAKER IN THIS PERIOD WILL
MOVE ACROSS THE AREA WEDNESDAY NIGHT AND THURSDAY WITH ISOLATED TO
SCATTERED THUNDERSTORMS AHEAD OF THIS SYSTEM WEDNESDAY/WEDNESDAY
NIGHT LIFTING INTO NORTHERN WYOMING ON THURSDAY. MAINLY DRY
CONDITIONS AND SEASONABLY COOL CONDITIONS WILL FOLLOW ON FRIDAY.

MEDIUM-RANGE GLOBAL MODELS ARE IN MUCH BETTER AGREEMENT THIS MORNING
THROUGH THURSDAY WITH INCREASING SPREAD LATE IN THE PERIOD.  UPPER
RIDGE BUILDS INTO THE NORTHERN ROCKIES ON MONDAY AS UPPER LOW DROPS
SOUTH ALONG 130W OFF THE NORTHWEST COAST.  LOW BOTTOMS OUT ALONG 40N
BEFORE PUSHING ONSHORE TUESDAY NIGHT.  BOTH GFS AND ECMWF HAVE UPPER
LOW NEAR RENO BY 00Z THURSDAY...HOT UPPER HIGH CENTERED OVER
OKLAHOMA AND DIFLUENT FLOW IN BETWEEN OVER WYOMING.  UPPER LOW THEN
OPENS UP AND LIFTS NE ACROSS THE NORTHERN GREAT BASIN WEDNESDAY
NIGHT AND ACROSS WYOMING ON THURSDAY.  AFTERWARDS...GFS/GEFS MEAN
SHOW BROAD CYCLONIC FLOW OVER THE NORTHERN ROCKIES WITH UPPER HIGH
REMAINING OVER THE CENTRAL PLAINS.  ECMWF ATTEMPTS TO RETROGRADE
HIGH BACK INTO FOUR CORNERS AREA ON FRIDAY.  FORECAST WEIGHTED
TOWARD GFS/PERSISTENCE IN THIS LATTER PERIOD.

&&

.AVIATION...

VFR CONDITIONS TO PREVAIL THROUGH THE FORECAST PERIOD WITH THE
EXCEPTION OF LOCALIZED MVFR WITH CONVECTION. BEST CHANCE FOR STRONG
TO SEVERE THUNDERSTORMS STILL APPEARS TO BE OVER JOHNSON AND NATRONA
COUNTIES THIS AFTERNOON AND EARLY EVENING. IN THIS REGION...SURFACE
DEW POINTS OF 50-55F IN E-NE SURFACE FLOW WILL PROVIDE FAVORABLE
SHEAR ENVIRONMENT. BETTER CHANCE FOR ROTATING STORMS AND LARGER HAIL
IN THIS ENVIRONMENT THAN THURSDAY. KCPR WILL BE MOST SUSCEPTIBLE TO
THESE STORMS. TO THE WEST...FUNNELED W-SW FLOW ALOFT WILL CONTINUE
TO BRING MID-LEVEL MOISTURE ACROSS THE REGION. THUS...STILL EXPECT
ISOLATED CONVECTION PRIOR TO 18Z WITH SCATTERED CONVECTION AFTER
THAT TIME. DRIER AIR FILTERS IN BETWEEN 23Z/FRI-02Z/SAT...SO
CONVECTION SHOULD DWINDLE QUICKLY FROM WEST-TO-EAST BY MID-EVENING.
WESTERLY SURFACE WINDS IN THE RANGE OF 15-25KTS WILL IMPACT
KPNA...KBPI...AND KRKS TERMINALS THIS AFTERNOON. SHOWER AND
THUNDERSTORM COVERAGE WILL BE LESS WIDESPREAD AND INTENSE SATURDAY.

&&

.HYDROLOGY...

THE WIND RIVER FROM DUBOIS TO RIVERTON CONTINUES TO RISE TO NEAR
FLOOD STAGE. A FLOOD WARNING HAS BEEN ISSUED. THE GREEN RIVER FROM
WARREN BRIDGE TO FONTENELLE CONTINUES TO RISE AND IS EXPECTED TO
BE NEAR FLOOD STAGE BY TUESDAY. THE FORKS OF THE SHOSHONE CONTINUE
TO RISE AS WELL. SMALL CREEKS AND HEADWATER STREAMS THAT ARE
ALREADY FLOWING AT MODERATE TO HIGH LEVELS ARE EXPECTED TO RUN
ABOVE BANKFULL THROUGH SUNDAY.

WARMER MOUNTAIN TEMPERATURES TODAY WILL INCREASE SNOWMELT BELOW
10000 FEET. RUN OFF HAS BEEN BETWEEN 1.5 AND 2 INCHES FROM THIS
SNOW PACK AND IS EXPECTED TO CONTINUE AROUND THIS RATE. SCATTERED
THUNDERSTORMS ARE EXPECTED MAINLY ACROSS NORTHERN AND EASTERN WYOMING
THIS AFTERNOON HOWEVER THESE STORMS WILL MOVE FAIRLY QUICKLY. COOLER
TEMPERATURES WILL PREVAIL ACROSS NORTHERN WYOMING TODAY WHILE
TEMPERATURES WILL REMAIN WARM ACROSS THE SOUTH. THE BEST POTENTIAL
FOR SIGNIFICANT RAIN PRODUCING THUNDERSTORMS WILL BE ACROSS
NATRONA AND JOHNSON COUNTIES THIS AFTERNOON AND EVENING. SHOWER
AND THUNDERSTORM ACTIVITY IS EXPECTED TO BE MORE ISOLATED OVER THE
WEEKEND WITH NEAR OR SLIGHTLY BELOW NORMAL TEMPERATURES ACROSS THE
NORTHERN BASINS AND NEAR OR ABOVE NORMAL TEMPERATURES ACROSS THE
SOUTH.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH THROUGH LATE SATURDAY NIGHT WYZ016-017.

&&

SHORT TERM...ALLEN
LONG TERM...AEM
AVIATION...CNJ
HYDROLOGY...ALLEN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
1138 AM MDT FRI JUN 24 2011

WYZ001>020-022>030-251102-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
1138 AM MDT FRI JUN 24 2011

...FLOOD WATCH FOR AREAS OF NORTHERN WYOMING TONIGHT THROUGH SUNDAY
NIGHT...

...FLOOD WARNING FOR THE WIND RIVER FROM DUBOIS TO RIVERTON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS THE BIG HORN
BASIN...JOHNSON AND NATRONA COUNTIES WITH LARGE HAIL AND DAMAGING
WIND THE PRIMARY HAZARDS.  LESS INTENSE STORMS ARE POSSIBLE
ELSEWHERE...HOWEVER A FEW OF THESE STORMS COULD BE VERY STRONG WITH
WIND GUSTS IN EXCESS OF 45 MPH...FREQUENT CLOUD TO GROUND
LIGHTNING...SMALL HAIL AND HEAVY DOWNPOURS.

EXCESSIVE SNOWMELT DUE TO WARM TEMPERATURES WILL CAUSE A RISE IN
RIVER LEVEL ON THE WIND RIVER FROM DUBOIS THROUGH RIVERTON.
FLOODING IS LIKELY IN LOW LYING AREAS ADJACENT TO THE WIND RIVER.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

SATURDAY AND SUNDAY...ISOLATED TO SCATTERED THUNDERSTORMS ACROSS
NORTHERN WYOMING.

WEDNESDAY AFTERNOON AND EVENING...ISOLATED TO SCATTERED
THUNDERSTORMS OVER MOST OF WEST AND CENTRAL WYOMING.

THURSDAY...ISOLATED THUNDERSTORMS ACROSS NORTHERN WYOMING.

CREEKS AND RIVERS WILL CONTINUE TO RUN HIGH AND SWIFT AS RECORD
MOUNTAIN SNOWPACK BEGINS TO MELT MORE RAPIDLY WITH THE EXPECTED
WARM-UP INTO THE WEEKEND. SOME LOCATIONS COULD DEVELOP OR CONTINUE TO
EXPERIENCE MINOR FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE WEATHER AND FLOODING.
THANK YOU.

TEAM RIVERTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1102 AM MDT FRI JUN 24 2011

WYZ001>003-012-241745-
ABSAROKA MOUNTAINS WY-CODY FOOTHILLS WY-TETON AND GROS VENTRE
MOUNTAINS WY-YELLOWSTONE NATIONAL PARK WY-
1102 AM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PARK AND EASTERN TETON
COUNTIES IN NORTHWEST WYOMING UNTIL 1145 AM MDT...

AT 1059 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR EAGLE CREEK MEADOWS...OR 24 MILES
SOUTHEAST OF LAKE YELLOWSTONE...MOVING NORTHEAST AT 65 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

THIS STORM WILL BE NEAR...
HWY 14/16/20 MILE MARKER 20 AROUND 1115 AM MDT.
WAPITI AROUND 1125 AM MDT.
STATE HWY 296 MILE MARKER 40 AROUND 1135 AM MDT.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4436 11043 4485 10964 4481 10925 4453 10914
      4394 11026 4409 11044 4422 11039
TIME...MOT...LOC 1702Z 242DEG 57KT 4439 10992

BERC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1149 AM MDT FRI JUN 24 2011

WYZ017-019-020-241830-
GREEN MOUNTAINS AND RATTLESNAKE RANGE WY-NATRONA COUNTY LOWER
ELEVATIONS WY-WIND RIVER BASIN WY-
1149 AM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN NATRONA AND
SOUTHEASTERN FREMONT COUNTIES UNTIL 1230 PM MDT...

AT 1145 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR JEFFREY CITY...MOVING EAST AT 40 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

THIS STORM WILL BE NEAR...
U.S. HWY 287 MILE MARKER 20 AROUND 1155 AM MDT.
U.S. HWY 287 MILE MARKER 10 AROUND 1205 PM MDT.
SPLIT ROCK AROUND 1210 PM MDT.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4291 10728 4253 10707 4239 10793 4260 10809
TIME...MOT...LOC 1749Z 255DEG 35KT 4250 10785

BERC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1206 PM MDT FRI JUN 24 2011

WYZ002>004-241845-
ABSAROKA MOUNTAINS WY-CODY FOOTHILLS WY-NORTH BIG HORN BASIN WY-
1206 PM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PARK COUNTY UNTIL 1245 PM
MDT...

AT 1203 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR BUFFALO BILL STATE PARK...OR 7 MILES WEST
OF CODY...MOVING EAST NORTHEAST AT 35 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

THIS STORM WILL BE NEAR...
HWY 14/16/20 MILE MARKER 50 AROUND 1210 PM MDT.
CODY  1215 PM MDT.
U.S. HWY 14A MILE MARKER 10 AROUND 1225 PM MDT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4479 10870 4449 10859 4420 10943 4459 10940
TIME...MOT...LOC 1805Z 250DEG 34KT 4450 10916

BERC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1231 PM MDT FRI JUN 24 2011

WYZ019-020-241915-
GREEN MOUNTAINS AND RATTLESNAKE RANGE WY-NATRONA COUNTY LOWER
ELEVATIONS WY-
1231 PM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN NATRONA COUNTY UNTIL
115 PM MDT...

AT 1226 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 10 MILES NORTHEAST OF SPLIT ROCK...OR 23 MILES
EAST OF JEFFREY CITY...MOVING EAST AT 35 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

THIS STORM WILL BE NEAR...
U.S. HWY 220 MILE MARKER 70 AROUND 100 PM MDT.
U.S. HWY 220 MILE MARKER 80 AROUND 110 PM MDT.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4286 10686 4248 10676 4246 10746 4271 10753
TIME...MOT...LOC 1831Z 261DEG 31KT 4257 10735

BERC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1233 PM MDT FRI JUN 24 2011

WYZ003-004-241915-
CODY FOOTHILLS WY-NORTH BIG HORN BASIN WY-
1233 PM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BIG HORN COUNTY IN NORTH
CENTRAL WYOMING...AND EASTERN PARK COUNTY IN NORTHWEST WYOMING UNTIL
115 PM MDT...

AT 1230 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM NEAR STATE HWY 120 MILE MARKER 70...OR 12 MILES
SOUTHEAST OF CODY...MOVING EAST AT 25 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

THIS STORM WILL BE NEAR...
HWY 14/16/20 MILE MARKER 70 AROUND 100 PM MDT.
HWY 14/16/20 MILE MARKER 80 AROUND 115 PM MDT.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4492 10847 4422 10845 4423 10913 4463 10905
TIME...MOT...LOC 1833Z 262DEG 22KT 4437 10893

BERC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
112 PM MDT FRI JUN 24 2011

WYZ019-020-022-242000-
CASPER MOUNTAIN WY-GREEN MOUNTAINS AND RATTLESNAKE RANGE WY-NATRONA
COUNTY LOWER ELEVATIONS WY-
112 PM MDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL NATRONA COUNTY UNTIL 200
PM MDT...

AT 107 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES NORTHWEST OF U.S. HWY 220 MILE MARKER
90...OR 25 MILES SOUTHWEST OF CASPER...MOVING EAST AT 40 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

THIS STORM WILL BE NEAR...
BESSEMER BEND AROUND 125 PM MDT.
RED BUTTES VILLAGE AROUND 135 PM MDT.
CASPER AROUND 145 PM MDT.
THE EASTRIDGE MALL AROUND 150 PM MDT.

THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 176 AND
194.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

BRIEF HEAVY RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES
AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A
FLOODED ROADWAY.

REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4300 10609 4256 10608 4254 10686 4282 10694
TIME...MOT...LOC 1910Z 255DEG 36KT 4269 10675

MCDONALD