River Flood Warning 3, NWS Riverton, WY

126 
WGUS85 KRIW 310405
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1005 PM MDT MON MAY 30 2011

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

  BLACKS FORK NEAR LITTLE AMERICA AFFECTING SWEETWATER COUNTY.

.RAINFALL AND MELTING SNOW OVER THE PAST WEEKEND HAS RESULTED
IN RISES ON AREA RIVERS AND CREEKS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AREA RESIDENTS SHOULD MONITOR THE LATEST WEATHER AND RIVER
CONDITIONS. IF FLOODING IS OBSERVED...MOVE TO HIGHER GROUND.

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

&&

WYC037-311800-
/O.EXT.KRIW.FL.W.0003.110531T0416Z-110531T1800Z/
/LTAW4.1.RS.110531T0416Z.110531T1200Z.110531T1800Z.NO/
1005 PM MDT MON MAY 30 2011

THE FLOOD WARNING CONTINUES FOR
  THE BLACKS FORK NEAR LITTLE AMERICA.
* UNTIL NOON TUESDAY.
* AT  9:00 PM MONDAY THE STAGE WAS 10 FEET.
* MINOR FLOODING IS OCCURRING AND IS FORECAST TO CONTINUE WITH
  A CREST NEAR 10.2 FEET AROUND 6 AM TUESDAY.
* FLOOD STAGE IS 10.0 FEET. 
* THE RIVER IS EXPECTED TO FALL BELOW FLOOD STAGE AROUND NOON ON
  TUESDAY.
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MORE WIDESPREAD FLOODING 
  UPSTREAM AT GRANGER. LEFT BANK OF THE RIVER OVERFLOWS AND CAUSES 
  HIGH WATER AT BOTH UPSTREAM AND DOWNSTREAM LOCATIONS. SOME MINOR 
  FLOODING ALONG BONOMO RANCH SOUTH OF GAGE. 
* IMPACT...AT 9.0 FEET...BANKFULL STAGE. COUNTY ROAD 95 MAY
  BECOME IMPASSABLE. LOW LYING FLOODING PROBLEMS BEGIN UPSTREAM
  AT GRANGER..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.2 FEET
  ON JUN 8 1986.

$$

009 
WGUS85 KRIW 311639
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1039 AM MDT TUE MAY 31 2011

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

  BLACKS FORK NEAR LITTLE AMERICA AFFECTING SWEETWATER COUNTY.

.EXCESS LOCAL LOW ELEVATION RAINFALL AND SNOWMELT RUNOFF IN SOUTHWEST
WYOMING HAS CONTINUED TO CAUSE SIGNIFICANT RISES IN FLOWS ALONG THE
TRIBUTARIES THAT FEED INTO THE BLACKS FORK.  AS A RESULT...THE BLACKS
FORK HAS RISEN 1 FOOT IN THE PAST 24 HOURS. 

THE BLACKS FORK IS EXPECTED TO CREST BY LATE TUESDAY AFTERNOON THROUGH
EARLY TUESDAY NIGHT...THEN TO RECEDE SLOWLY BELOW FLOOD STAGE BY WEDNESDAY 
AFTERNOON.
 
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 9 AM WEDNESDAY MORNING.

&&

WYC037-010439-
/O.EXT.KRIW.FL.W.0003.000000T0000Z-110601T2207Z/
/LTAW4.1.RS.110531T0500Z.110601T0000Z.110601T1607Z.NR/
1039 AM MDT TUE MAY 31 2011

...FLOOD WARNING EXTENDED UNTIL WEDNESDAY AFTERNOON...THE FLOOD 
WARNING CONTINUES FOR THE BLACKS FORK NEAR LITTLE AMERICA...

* UNTIL WEDNESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 10:00 AM TUESDAY THE STAGE WAS 10.3 FEET. 
* THE RIVER IS FORECASTED TO CREST LATE TUESDAY AFTERNOON AT 
  10.3 FEET...THEN THE RIVER IS EXPECTED TO RECEDE SLOWLY TO BELOW
  FLOOD STAGE BY WEDNESDAY AFTERNOON. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 10.0 FEET. 
* IMPACT...AT 13.0 FEET...WATER AT BASE OF WY HWY 374 BRIDGE..
* IMPACT...AT 11.2 FEET...RECORD STAGE--AS A RESULT OF BACKWATER FROM 
  AN ICE JAM (3/13/1997)..
* IMPACT...AT 10.9 FEET...RECORD FLOW---9980 CFS (6/13/1965)..
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MORE WIDESPREAD FLOODING 
  UPSTREAM AT GRANGER. LEFT BANK OF THE RIVER OVERFLOWS AND CAUSES 
  HIGH WATER AT BOTH UPSTREAM AND DOWNSTREAM LOCATIONS. SOME MINOR 
  FLOODING ALONG BONOMO RANCH SOUTH OF GAGE. I-80 BRIDGE TRAFFIC NOT 
  AFFECTED AT ANY STAGE. MORE WIDESPREAD FLOODING UPSTREAM AT 
  GRANGER..
* IMPACT...AT 9.0 FEET...BANKFULL STAGE. COUNTY ROAD 95--100 TO 200 
  YDS FROM GAGE--MAY BECOME IMPASSABLE. LOW LYING FLOODING PROBLEMS 
  BEGIN UPSTREAM AT GRANGER..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.4 FEET
  ON JUN 19 1998.

$$
JTFAHEY

281 
WGUS85 KRIW 010250
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
850 PM MDT TUE MAY 31 2011

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

  BLACKS FORK NEAR LITTLE AMERICA AFFECTING SWEETWATER COUNTY.

.EXCESS LOCAL LOW ELEVATION RAINFALL AND SNOWMELT RUNOFF IN SOUTHWEST
WYOMING HAS CONTINUED TO CAUSE SIGNIFICANT RISES IN FLOWS ALONG THE
TRIBUTARIES THAT FEED INTO THE BLACKS FORK OVER THE LAST COUPLE OF DAYS.

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)

&&

WYC037-011630-
/O.CON.KRIW.FL.W.0003.000000T0000Z-110601T2207Z/
/LTAW4.1.RS.110531T0500Z.110601T0200Z.110601T1800Z.NO/
850 PM MDT TUE MAY 31 2011

THE FLOOD WARNING CONTINUES FOR
  THE BLACKS FORK NEAR LITTLE AMERICA.
* UNTIL WEDNESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT  8:00 PM TUESDAY THE STAGE WAS 10.4 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 10.0 FEET.
* FORECAST...THE RIVER APPEARS TO BE AT CREST...AND IS EXPECTED
  TO BEGIN A SLOW FALL AFTER 3 AM WEDNESDAY. THE RIVER IS
  EXPECTED TO FALL BELOW THE 10 FOOT FLOOD STAGE EARLY WEDNESDAY
  AFTERNOON.  HOWEVER...THE RIVER WILL REMAIN NEAR BANKFULL
  THROUGH THE REST OF THE WEEK.
* IMPACT...AT 11.2 FEET...RECORD STAGE--AS A RESULT OF BACKWATER FROM 
  AN ICE JAM (3/13/1997).
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MORE WIDESPREAD FLOODING 
  UPSTREAM AT GRANGER. LEFT BANK OF THE RIVER OVERFLOWS AND CAUSES 
  HIGH WATER AT BOTH UPSTREAM AND DOWNSTREAM LOCATIONS. SOME MINOR 
  FLOODING ALONG BONOMO RANCH SOUTH OF GAGE. COUNTY ROAD 95 BECOMES
  IMPASSABLE NEAR THE RIVER GAGE.
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 10.4 FEET
  ON JUN 19 1998.

$$

442 
WGUS85 KRIW 011520
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
920 AM MDT WED JUN 1 2011

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

  BLACKS FORK NEAR LITTLE AMERICA AFFECTING SWEETWATER COUNTY.

.EXCESS LOCAL LOW ELEVATION RAINFALL AND SNOWMELT RUNOFF IN SOUTHWEST
WYOMING HAS CONTINUED TO CAUSE SIGNIFICANT RISES IN FLOWS ALONG THE
TRIBUTARIES THAT FEED INTO THE BLACKS FORK OVER THE LAST COUPLE OF DAYS.

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)

&&

WYC037-012013-
/O.EXT.KRIW.FL.W.0003.000000T0000Z-110601T2013Z/
/LTAW4.1.RS.110531T0500Z.110601T0600Z.110601T1413Z.NR/
920 AM MDT WED JUN 1 2011

THE FLOOD WARNING CONTINUES FOR
  THE BLACKS FORK NEAR LITTLE AMERICA.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT  8:00 AM WEDNESDAY THE STAGE WAS 10.0 FEET. 
* MINOR FLOODING IS OCCURRING.
* FLOOD STAGE IS 10.0 FEET. 
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY 
  THIS MORNING.
* IMPACT...AT 13.0 FEET...WATER AT BASE OF WY HWY 374 BRIDGE..
* IMPACT...AT 11.2 FEET...RECORD STAGE--AS A RESULT OF BACKWATER FROM 
  AN ICE JAM (3/13/1997)..
* IMPACT...AT 10.9 FEET...RECORD FLOW---9980 CFS (6/13/1965)..
* IMPACT...AT 10.0 FEET...FLOOD STAGE. MORE WIDESPREAD FLOODING 
  UPSTREAM AT GRANGER. LEFT BANK OF THE RIVER OVERFLOWS AND CAUSES 
  HIGH WATER AT BOTH UPSTREAM AND DOWNSTREAM LOCATIONS. SOME MINOR 
  FLOODING ALONG BONOMO RANCH SOUTH OF GAGE. I-80 BRIDGE TRAFFIC NOT 
  AFFECTED AT ANY STAGE. MORE WIDESPREAD FLOODING UPSTREAM AT 
  GRANGER..
* IMPACT...AT 9.0 FEET...BANKFULL STAGE. COUNTY ROAD 95--100 TO 200 
  YDS FROM GAGE--MAY BECOME IMPASSABLE. LOW LYING FLOODING PROBLEMS 
  BEGIN UPSTREAM AT GRANGER..
* FLOOD HISTORY...THIS CREST COMPARES TO A PREVIOUS CREST OF 9.9 FEET 
  ON MAY 26 1984.

$$

c.baker

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
351 AM MDT MON MAY 30 2011

.SHORT TERM...TODAY THROUGH WEDNESDAY NIGHT

PRECIPITATION CONTINUES TO FALL ACROSS CENTRAL WYOMING AS A NORTH TO
SOUTH BAND HAS SET UP AHEAD OF AN UPPER LEVEL LOW PRESSURE SYSTEM
CENTERED OVER NORTHERN UTAH EARLY THIS MORNING.  SNOW CONTINUES IN
THE MOUNTAINS BUT THE BASINS REMAIN MOSTLY COLD RAIN WITH A FEW
POCKETS OF SNOW AS TEMPERATURES STAY IN THE LOW TO MID 30S. MANY
LOWER ELEVATION AREAS WILL ALTERNATE BETWEEN RAIN AND SNOW THROUGH
THE MORNING HOURS.  PRECIPITATION WILL DECREASE LATER THIS MORNING
AS DYNAMIC FORCING MOVES OFF TO THE NORTH AND EAST WITH THE MID
LEVEL CIRCULATION.  WRAPAROUND MOISTURE WILL MOVE INTO THE
NORTHWESTERN MOUNTAINS AND LAST THROUGH THE DAY SO HAVE EXTENDED THE
WINTER WEATHER ADVISORIES FOR THOSE AREAS AS WELL AS THE BIGHORN
MOUNTAINS.  ADVISORIES MAY NEED TO BE CONSIDERED FOR THE FAR WESTERN
VALLEYS BUT HAVE HELD OFF AT THIS TIME AS IT SEEMS SIGNIFICANT
IMPACT DUE TO SNOWFALL IS UNLIKELY ATTM.

STRONG WIND WILL DEVELOP ACROSS THE WIND CORRIDOR FROM ROCK SPRINGS
TO CASPER THIS AFTERNOON.  PROXIMITY TO THE CENTER OF THE MID LEVEL
CIRCULATION WITH H7 WINDS OF 50KT AND MARGINALLY FAVORABLE SFC
GRADIENT INDICATE THE POSSIBILITY FOR HIGH WIND BUT INSTABILITY AND
LACK OF DOWNWARD DYNAMIC FORCING ARE MITIGATING FACTORS.  ISOLATED
FAVORED AREAS MAY SEE A BRIEF PERIOD OF HIGH WIND BUT HAVE ELECTED
TO CANCEL THE HIGH WIND WATCH AS WIDESPREAD HIGH WIND SEEMS
UNLIKELY.

COOLER THAN NORMAL TEMPERATURES WILL CONTINUE TODAY AS -2 TO -5C H7
TEMPS SETTLE IN OVER THE AREA.  WITH THE UPPER LOW CIRCLING OVER
WITH -18 TO -22C H5 TEMPS...MID LEVEL LAPSE RATES OF 7 TO 8 C/KM WILL
DEVELOP BRINGING SUFFICIENT INSTABILITY FOR ISOLATED AFTERNOON
THUNDERSTORMS ACROSS THE AREA.

WARMER AND DRIER CONDITIONS CAN BE EXPECTED FOR TUESDAY AS A RIDGE
DEVELOPS OVER THE INTERMOUNTAIN WEST.  THE WARMING TREND CONTINUES
AS H7 TEMPS 8 TO 12 C SETTLE IN OVER THE AREA. THIS WILL BRING
TEMPERATURES THAT MAY APPROACH 80 IN THE CENTRAL BASINS.  TEMPS IN
THE LOW TO MID 60S IN THE MOUNTAINS WILL BRING SIGNIFICANT SNOWMELT
AND LOCAL RIVERS AND STREAMS WILL NEED TO BE WATCHED FOR FLOODING
POTENTIAL.

.LONG TERM...THURSDAY THROUGH MONDAY

THE LONG RANGE MODELS ARE EVEN MORE BULLISH WITH LIFTING A GOOD
PORTION OF THE WESTERN TROUGH NORTHEAST THROUGH IDAHO THURSDAY AND
INTO MONTANA THURSDAY NIGHT. THUS AN INCREASE IN SHOWERS AND
STORMS FOR THE NORTHWEST QUARTER OF WY AND ISOLATED ACTIVITY FOR
EAST OF THE DIVIDE THURS PM AND THURS NIGHT. FRIDAY LOOKS MOSTLY
DRY WITH ONLY ISOLATED MOUNTAIN SHOWERS OR STORMS. THE NEXT UPPER
LEVEL STORM SYSTEM MOVES OVER CALIFORNIA ON SATURDAY TURNING THE
FLOW ALOFT TO SW OVER WY. ISOLATED SHOWERS AND STORMS FOR THE MOUNTAINS
LOOK FINE FOR NOW. THE GFS AND ECMWF DIFFER ON THE TRACK OF THE
SYSTEM NEXT SUNDAY AND MONDAY. NO CLEAR WINNER THAT FAR OUT. IF
MOISTURE DOES BEGIN TO STREAM INTO THE REGION ON SUNDAY THEN
ISOLATED SHOWERS AND STORMS WOULD OCCUR. THEN A LITTLE BETTER
CHANCE OF CONVECTION MONDAY AS THE SYSTEM NEARS THE AREA. WILL SEE
HOW THINGS LOOK TONIGHT FOR BETTER CLARITY IN THE LAST DAYS OF THE
EXTENDED. AS FOR TEMPS...MODELS ARE TRENDING COOLER FOR THURSDAY
SO WENT AHEAD COOLED DOWN HIGHS. MILD TEMPS ON FRIDAY. THEN WARMER
HIGHS NEXT SATURDAY AND SUNDAY AHEAD OF THE NEXT WEATHER SYSTEM.
SLIGHTLY COOLER NEXT MONDAY PROVIDED STORM APPROACHES. THE IMPACT
OF THESE TEMPS WILL SLOW DOWN THE RATE OF HIGH ELEVATION SNOW
MELT THURS AND FRI.

&&

.AVIATION...

MVFR/IFR CONDITIONS WILL PREVAIL ACROSS MOST OF THE REGION THROUGH
15Z THIS MORNING IN SHRASN/FG.  THESE CONDITIONS WILL GRADUALLY
IMPROVE FROM THE SOUTH THROUGH THE DAY.  WEST TO SOUTHWEST WIND WILL
INCREASE ACROSS THE AREA THROUGH THE AFTERNOON WITH W-NW WIND AT
20-35KT VCNTY AND SOUTH OF A KCPR-KRIW-KBPI-KEMM LINE. RAIN AND SNOW
SHOWERS WILL LINGER THROUGH THE EVENING ACROSS THE NORTH AND WEST
WITH GRADUAL IMPROVEMENT OVERNIGHT MONDAY.

&&

.HYDROLOGY...

RAIN AND SNOW TOTALING 1 TO 2 INCHES OF LIQUID PRECIPITATION HAS
FALLEN OVER MUCH OF THE LOWER ELEVATIONS EAST OF THE CONTINENTAL
DIVIDE OVER HE LAST TWO DAYS.  COLD TEMPERATURES ACCOMPANYING THIS
PRECIPITATION HAS ALLOWED ANY SNOW IN THE MOUNTAINS AND FOOTHILLS TO
REMAIN AND NOT FLOW INTO LOCAL STREAMS AND CREEKS.  RISES HAVE BEEN
NOTED IN A FEW AREAS MOST NOTABLY JOHNSON AND SWEETWATER COUNTIES
BUT NOT FLOODING HAS OCCURRED YET.  THE DOWNSIDE IS THERE IS MORE
SNOWPACK TO COME DOWN AT A LATER DATE.  6 TO 12 INCHES OF NEW SNOW
HAS FALLEN IN THE WIND RIVER AND BIGHORN RANGES DURING THIS STORM.
A WARMUP WILL BEGIN TUESDAY BUT SIGNIFICANT SNOWMELT SHOULD HOLD OFF
UNTIL WEDNESDAY WHEN MID MOUNTAIN TEMPERATURES APPROACH THE MID
60S.  AREAS CREEKS AND STREAMS WILL NEED TO BE CONTINUALLY MONITORED
FOR SIGNIFICANT RISES ON WEDNESDAY AND THURSDAY.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...

WINTER WEATHER ADVISORY UNTIL MIDNIGHT MDT TONIGHT
WYZ001-002-008-009-012.

FLOOD WATCH THROUGH THIS EVENING WYZ010-011.

&&

SHORT TERM...BERC
LONG TERM...AR
AVIATION...AEM
HYDROLOGY...BERC

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
400 AM MDT MON MAY 30 2011

WYZ001>020-022>030-311200-
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-
400 AM MDT MON MAY 30 2011

...A FLOOD WARNING REMAINS IN EFFECT FOR THE SALT RIVER AND ITS
TRIBUTARIES IN STAR VALLEY...

...FLOOD WATCH FOR RIVERS AND STREAMS IN JOHNSON COUNTY THROUGH THIS
EVENING...

...WINTER WEATHER ADVISORY FOR MUCH OF THE NORTHWEST MOUNTAINS AND
THE BIGHORN MOUNTAINS THROUGH MIDNIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

SNOWFALL IS EXPECTED TO CONTINUE THROUGH THIS EVENING IN THE
BIGHORNS AND THE NORTHWEST MOUNTAINS INCLUDING YELLOWSTONE NATIONAL
PARK. PLEASE SEE THE LATEST WINTER WEATHER STATEMENT FOR FURTHER
DETAILS ON THIS LATE SPRING STORM.

SOME RAIN WILL FALL WHERE HEAVY RAIN HAS FALLEN RECENTLY. THIS MAY
LEAD TO INCREASED RUNOFF INTO CREEKS AND STREAMS...THUS RAISING THE
WATER LEVELS AT THE LOWER ELEVATIONS.

STRONG WIND WILL DEVELOP THIS AFTERNOON ALONG THE ROCK SPRINGS TO
CASPER CORRIDOR.  WIND OF 30 TO 40 MPH WITH GUSTS OVER 50 MPH
ARE EXPECTED.  LOCALLY FAVORED AREAS MAY SEE WIND APPROACHING HIGH
WIND CRITERIA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A CHANCE OF THUNDERSTORMS OVER THE NORTHWEST QUARTER OF WYOMING
THURSDAY AND THURSDAY NIGHT AS A COLD FRONT MOVES THROUGH THAT
AREA. ISOLATED THUNDERSTORMS ARE POSSIBLE EAST OF THE CONTINENTAL
DIVIDE THURSDAY AFTERNOON AND NIGHT AS THE COLD FRONT PUSHES
THROUGH THIS REGION.

WARMER TEMPERATURES ARE STILL FORECAST FOR WEDNESDAY. THEN COOLER
HIGHS ARE NOW FORECAST FOR THURSDAY AND FRIDAY. THIS WOULD SLOW THE
RATE OF SNOW MELT IN THE HIGHER MOUNTAINS. THEN TEMPERATURES ARE TO
WARM AGAIN SATURDAY AND SUNDAY. STAY TUNED FOR UPDATES AND ADDITIONAL
INFORMATION.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS...PLEASE REPORT ANY FLOODING ALONG RIVERS...CREEKS AND
STREAMS. PLEASE REPORT ANY SNOWFALL AMOUNTS. THANK YOU.

TEAM RIVERTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
101 PM MDT MON MAY 30 2011

WYZ010-301945-
NORTHEAST JOHNSON COUNTY WY-
101 PM MDT MON MAY 30 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN JOHNSON COUNTY UNTIL
145 PM MDT...

AT 1256 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 13 MILES NORTHEAST OF I90 MILE MARKER 60...OR
17 MILES NORTHEAST OF BUFFALO...MOVING EAST AT 10 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING.

THIS STORM WILL BE NEAR...
RURAL NORTHERN JOHNSON COUNTY THROUGH 130 PM MDT
RURAL NORTHEASTERN JOHNSON COUNTY THROUGH 145 PM MDT

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

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

LAT...LON 4439 10648 4452 10657 4457 10640 4456 10611
      4441 10604
TIME...MOT...LOC 1900Z 253DEG 9KT 4446 10641

LIPSON