River Flood Warning 2, NWS Riverton, WY

329 
WGUS85 KRIW 240719
FLSRIW
FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
119 AM MDT TUE MAY 24 2011

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN 
NORTH CENTRAL WYOMING...

  MIDDLE FORK POWDER RIVER ABOVE KAYCEE AFFECTING JOHNSON COUNTY.

.RAINFALL AMOUNTS OVERNIGHT WERE GENERALLY LESS THAN A QUARTER
OF AN INCH WITH ONLY ISOLATED AREAS RECEIVING A HALF AN INCH.
THEREFORE...THE MIDDLE FORK OF THE POWDER RIVER IS NO LONGER
EXPECTED TO REACH FLOOD STAGE.  HOWEVER...SOME LOW LYING AREAS
NEAR THE RIVER COULD BE IMPACTED...AS THE RIVER WILL BE NEAR
BANKFULL IN A FEW SPOTS.

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)

THIS WILL BE THE LAST STATEMENT WITH THIS EVENT.

&&

WYC019-240749-
/O.CAN.KRIW.FL.W.0002.000000T0000Z-110525T0400Z/
/KAYW4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NR/
119 AM MDT TUE MAY 24 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE MIDDLE FORK OF THE POWDER RIVER ABOVE KAYCEE.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER IS FORECAST BELOW FLOOD STAGE WITH A MAXIMUM 
  VALUE OF 7.0 FEET TODAY.
* IMPACT...AT 8.0 FEET...FLOOD STAGE. WATER OVER LOW LYING AREAS ALONG
  RIGHT BANK.
* IMPACT...AT 7.0 FEET...BANKFULL STAGE.  PEAK FLOW TRAVEL TIME TO 
  KAYCEE IS AROUND 8 TO 10 HOURS.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
315 PM MDT MON MAY 23 2011

.SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT

AN UPPER LEVEL LOW PRESSURE STORM SYSTEM OVER THE WESTERN PACIFIC
NORTHEAST CONTINUES TO SPIN AND EJECT SHORT WAVE TROUGHS ACROSS
CENTRAL CALIFORNIA...NEVADA...UTAH AND WESTERN COLORADO...MOVING
NORTH THROUGH WESTERN AND CENTRAL WYOMING. PRECIPITABLE WATER FROM
SATELLITE ESTIMATES RANGE FROM 130 TO 200 PERCENT OF NORMAL ACROSS
THE AREA. THE SOUTHERLY FLOW ALOFT IS RATHER WEAK CAUSING SLOW
MOVING SHOWERS AND THUNDERSTORMS. WIDESPREAD DEEP CONVECTION HAS
SPREAD ACROSS SOUTHERN AND CENTRAL WYOMING...WESTERN
COLORADO...NORTHERN AND CENTRAL UTAH...EASTERN NEVADA AND SOUTHERN
IDAHO. LOCALIZED FLOODING OF SMALL STREAMS HAS BEEN REPORTED IN
SOUTHERN FREMONT...SOUTHERN JOHNSON AND EASTERN WASHAKIE COUNTIES.
OTHER RIVERS REMAIN HIGH AND STEADY TO RISING. WITH THE SATURATED
SOILS...SIGNIFICANT SNOW PACK WHICH IS NOW 225 TO 250 PERCENT OF
NORMAL FOR LATE MAY...COMBINED WITH LOCAL HEAVY RAINS CONTINUES
THE THREAT FOR FLASH FLOODING. THE FLASH FLOOD WATCH HAS BEEN
EXTENDED TO 6 AM MDT WEDNESDAY MORNING...EXCEPT IN SWEETWATER
COUNTY WHERE THE WATCH ENDS AT 6 AM TUESDAY MORNING. SWEETWATER
COUNTY IS NOT EXPECTED TO RECEIVE THE HEAVY RAIN ON TUESDAY.
TEMPERATURES WILL REMAIN STEADY OVER THE NEXT FEW DAYS WITH SOME
COOLING ON WEDNESDAY NIGHT. OVERALL WINDS WILL REMAIN LIGHT
OUTSIDE OF THUNDERSTORM ACTIVITY WHICH MAY CAUSE LOCAL GUSTY
WINDS. THE MAIN FOCUS OF THE FORECAST REMAINS TO BE THE LOCATION
AND AMOUNTS OF THE HEAVIEST PRECIPITATION WHICH IS OVERALL
DIFFICULT TO PINPOINT DUE TO THE CONVECTIVE NATURE OF THE
PRECIPITATION. THIS SYSTEM HAS STRENGTHENED AS PREDICTED BY THE
MODELS SINCE YESTERDAY AS THE UPPER LOW BOMBS IN CENTRAL KANSAS
TUESDAY NIGHT AND WEDNESDAY. RIDGING OVER THE AREA WEDNESDAY AND
WEDNESDAY NIGHT SHOULD SIGNIFICANTLY DECREASE PRECIPITATION
COVERAGE AND AMOUNTS. DAYTIME HEATING WITH LOW LEVEL MOISTURE
COULD SUPPORT MORE CONVECTION THAN CURRENTLY FORECAST...MUCH WILL
DEPEND ON TEMPERATURES ALOFT.

.LONG TERM...THURSDAY THROUGH MONDAY

LATEST MODEL GUIDANCE SUITE HAS CHANGED DRAMATICALLY FROM 24 HOURS
AGO...WITH MUCH COOLER AND INCLEMENT WEATHER NOW PROGGED FOR
MEMORIAL DAY WEEKEND.

MEDIUM RANGE MODELS CONTINUE TO SHOW A NEGATIVELY TILTED TROUGH
PUSHING ACROSS THE NORTHERN ROCKIES THURSDAY. THEN THEY GENERALLY
SHOW A CLOSED CIRCULATION FORMING IN THE BASE OF THIS TROUGH ACROSS
NORTHERN WYOMING/MONTANA LATE THURSDAY. THIS UPPER LEVEL CIRCULATION
THEN SLOWLY PUSHES EAST INTO THE NORTHERN PLAINS FRIDAY.

DIFLUENT FLOW AHEAD OF THE NEGATIVELY TILTED TROUGH...A STRONG
COLD FRONT...AND SOME LEFT FRONT UPPER LEVEL DYNAMICS WILL ALL COMBINE
FOR SHOWERS AND THUNDERSTORMS...ESPECIALLY OVER THE NORTHWEST AND
NORTH...WHERE A BETTER MOISTURE PROFILE WILL BE LOCATED. SOME OF
THE CONVECTION COULD EASILY BE STRONG TO SEVERE...WITH THE
GREATEST CONCERN FOR SEVERE WEATHER OVER THE BIG HORN BASIN...AS
WELL AS JOHNSON COUNTY. MODELS ARE PROGGING LIFTED INDEXES BETWEEN
-2 AND -6 WITH DECENT MID LEVEL LAPSE RATES AHEAD OF THE FRONT
THURSDAY...WHICH IS PROJECTED TO PUSH EAST OF THE AREA QUICKLY
EARLY THURSDAY EVENING. WILL MENTION THE POSSIBILITY OF STRONG TO
SEVERE CONVECTION IN THE HWO.

INSTEAD OF BUILDING AN UPPER RIDGE OVER THE ROCKIES/PLAINS AND A
STRONG...SLOW MOVING UPPER LOW OFF ALONG THE PACIFIC
NORTHWEST/BRITISH COLUMBIA COAST THIS WEEKEND...THE ECMWF AND GFS NO
LONGER BUILD THE RIDGE AND SEND THIS UPPER LOW/TROUGH EAST INTO THE
ROCKIES FOR MEMORIAL DAY WEEKEND. THE ECMWF IS MUCH FLATTER WITH
THIS SYSTEM THAN THE GFS OR ECMWF.  HAVE BROAD BRUSHED LOW
CHANCE/SLIGHT POPS ACROSS THE ENTIRE FORECAST AREA FOR THE UPCOMING
HOLIDAY WEEKEND...AND WILL WAIT FOR BETTER RUN TO RUN CONSISTENCY
BEFORE TRYING TO PIN POINT ANY GIVEN TIME PERIOD. ALSO HAVE
TRENDED SHARPLY COOLER THIS WEEKEND.

&&

.AVIATION...

VFR CONDITIONS WILL PREVAIL WITH MVFR CONDITIONS OCCURRING IN THE
VICINITY OF TSTMS. SMALL HAIL...HEAVY DOWNPOURS...AND ERRATIC WIND
DIRECTIONS AND WIND GUSTS UP TO 30 KNOTS NEAR STORMS. A FEW
TSTMS WILL CONTINUE OVERNIGHT WITH BRIEF -SHRA AND LOW MVFR CIGS
POSSIBLE. OTHERWISE...SOME AREAS OF BCFG ARE POSSIBLE AFTER
06Z...ESPECIALLY NEAR RIVERS AND IN AREAS THAT RECEIVE +RA THIS
AFTERNOON AND EVE. TSTMS WILL RETURN AFTER 18Z WED.

WINDS WILL GENERALLY BE DRIVEN BY TSTMS UNTIL AFTER 03Z WHEN WINDS
PICK UP FROM THE NORTHWEST AT 10 TO 25 KNOTS ACROSS MUCH OF THE
STATE FOR THE NIGHT...WINDS WILL RETURN TO LIGHT AND VARIABLE BY 18Z
WED...DRIVEN BY LOCAL TSTM AND SHOWER ACTIVITY FOR THE REST OF THE
PERIOD.

&&

.HYDROLOGY...

SNOW MELT AND LOCAL HEAVY RAIN HAS CONTINUED TO PRODUCE LOCAL
SMALL STREAM FLOODING ACROSS THE AREA.

MILD TEMPERATURES WILL FURTHER SNOW MELT THIS AFTERNOON AND EVENING.
ADDITIONALLY...A LOW PRESSURE TROUGH IN THE GREAT BASIN SPREADING
NORTH WILL CONTINUE TO PRODUCE SHOWERS AND THUNDERSTORMS WITH
LOCAL HEAVY RAIN. THESE SHOWERS AND THUNDERSTORMS WILL MOVE
THROUGH THE AREA...PLACING ADDITIONAL RAINFALL ON ALREADY SATURDAY
SOIL...ESPECIALLY ACROSS WESTERN...CENTRAL  AND NORTHERN WYOMING.
THE SNOW MELT AND LOCAL HEAVY RAIN MAY INCREASE WATER LEVELS TO
RESULT IN FLASH FLOODING THROUGH TUESDAY NIGHT.

MILD TO WARM TEMPERATURES WILL REMAIN OVER THE AREA THROUGH MUCH OF
THE WEEK...WITH CONTINUED OPPORTUNITY FOR ADDITIONAL SHOWERS AND
THUNDERSTORMS. CONDITIONS OF AREA STREAMS AND RIVERS WILL CONTINUE
TO BE MONITORED.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH LATE TONIGHT WYZ028>030.

FLASH FLOOD WATCH THROUGH LATE TUESDAY NIGHT WYZ001>020-022>027.

&&

SHORT TERM...C.BAKER
LONG TERM...WM
AVIATION...ALLEN
FIRE WEATHER...TEAM RIVERTON
HYDROLOGY...C.BAKER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
242 PM MDT MON MAY 23 2011

WYZ001>020-022>030-241300-
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-
242 PM MDT MON MAY 23 2011

...FLASH FLOOD WATCH FOR WESTERN AND CENTRAL WYOMING THROUGH 6 AM
WEDNESDAY MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

SHOWERS WILL CONTINUE ACROSS THE AREA TODAY...WITH ISOLATED
THUNDERSTORMS POSSIBLE IN THE AFTERNOON AND EVENING HOURS. THIS
ADDITIONAL RAINFALL...ALONG WITH SNOWMELT...LEADS TO THE POTENTIAL
FOR FLASH FLOODING. RESIDENTS ARE ENCOURAGED TO MONITOR WATER
LEVELS. THUNDERSTORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL...GUSTY
AND ERRATIC WINDS AND BRIEF HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

RELATIVELY MILD TEMPERATURES WILL ALLOW FOR SOME SNOWMELT IN THE
MOUNTAINS. THIS IN ADDITION TO PERIODIC CHANCES OF RAINFALL THIS WEEK
SHOULD KEEP MOST RIVERS AND CREEKS RUNNING HIGH...AND THE POTENTIAL
FOR SOME MINOR FLOODING. PEOPLE LIVING OR CAMPING NEAR RIVERS
AND CREEKS SHOULD MONITOR THE LATEST FORECAST...AND BE PREPARED FOR
THE POSSIBILITY OF SIGNIFICANT RISES.

A STORM SYSTEM ON THURSDAY HAS THE POTENTIAL TO PRODUCE STRONG TO
SEVERE THUNDERSTORMS...WITH THE STRONGEST STORMS EXPECTED ACROSS THE
NORTH. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY HAZARDS...
AS WELL AS...THE HEAVY RAINFALL FROM THE STORMS ON ALREADY SATURATED
GROUNDS COULD CAUSE FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS...PLEASE REPORT ANY FLOODING ALONG RIVERS...CREEKS AND
STREAMS...AS WELL AS ANY RAINFALL AMOUNTS. THANK YOU.

TEAM RIVERTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
326 PM MDT MON MAY 23 2011

WYZ017-232215-
WIND RIVER BASIN WY-
326 PM MDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN FREMONT COUNTY UNTIL 415
PM MDT...

AT 320 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES NORTH OF GAS HILLS RD MILE MARKER 30...OR
21 MILES SOUTHEAST OF SHOSHONI...MOVING NORTH AT 20 MPH.

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

A FLASH FLOOD WATCH IS IN EFFECT FOR THIS AREA UNTIL 6 AM WEDNESDAY.
REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER
SERVICE AT 1-800-211-1448.

THIS STORM WILL BE NEAR...
U.S. HWY 20/26 MILE MARKERS 80 TO 90...AND NEAR MONETA AROUND 405 PM
MDT. THE STORM WILL BE NEAR LYSITE AROUND 415 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.

LAT...LON 4334 10794 4328 10756 4289 10777 4294 10801
TIME...MOT...LOC 2123Z 194DEG 15KT 4301 10786

AR

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
357 PM MDT MON MAY 23 2011

WYZ020-232300-
NATRONA COUNTY LOWER ELEVATIONS-
357 PM MDT MON MAY 23 2011

...THUNDERSTORMS IN WESTERN NATRONA COUNTY...

NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE NORTH NORTHEAST ACROSS
THE WESTERN HALF OF NATRONA COUNTY THROUGH 5 PM. MOST OF THE STORMS
WILL BE WEST OF A LINE FROM ALCOVA TO NATRONA TO RED WALL.

SOME OF THESE STORMS WILL PRODUCE SMALL HAIL...WIND GUSTS TO 35
MPH...BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING. A FLASH FLOOD WATCH
IS IN EFFECT FOR NATRONA COUNTY UNTIL 6 AM WEDNESDAY.

REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER
SERVICE IN RIVERTON.

TAKE SHELTER INSIDE WHEN STORM APPROACH YOUR LOCATION.

AR

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
405 PM MDT MON MAY 23 2011

WYZ007-008-017-020-232245-
BIGHORN MOUNTAINS WEST WY-NATRONA COUNTY LOWER ELEVATIONS WY-OWL
CREEK AND BRIDGER MOUNTAINS WY-WIND RIVER BASIN WY-
405 PM MDT MON MAY 23 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN NATRONA AND EASTERN
FREMONT COUNTIES UNTIL 445 PM MDT...

AT 402 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR U.S. HWY 20/26 MILE MARKER 70...OR 30 MILES
EAST OF SHOSHONI...MOVING NORTH AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

THIS STORM WILL CROSS U.S. HWY 20/26 MILE MARKER 70 THROUGH 415 PM.
THEN THE STORM WILL MOVE TO NEAR LOST CABIN GAS PLANT AND LOST CABIN
AROUND 445 PM MDT.

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

A FLASH FLOOD WATCH IS IN EFFECT FOR THESE AREAS UNTIL 6 AM
WEDNESDAY. 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 4346 10777 4346 10738 4303 10741 4302 10765
TIME...MOT...LOC 2203Z 175DEG 15KT 4312 10754

AR

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
453 PM MDT MON MAY 23 2011

WYZ003>006-240200-
CODY FOOTHILLS-NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-
SOUTHWEST BIG HORN BASIN-
453 PM MDT MON MAY 23 2011

...THUNDERSTORMS TO OCCUR IN THE BIG HORN BASIN THIS EVENING...

NUMEROUS SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE BIG HORN
BASIN THIS EVENING. THE STORMS WILL BE MOVING FROM SOUTH TO NORTH
THROUGH THE BASIN.

SOME OF THE STRONGER STORMS WILL PRODUCE SMALL HAIL...WIND GUSTS
TO 35 MPH...HEAVY RAIN AND DANGEROUS LIGHTNING. A FLASH FLOOD
WATCH IS IN EFFECT FOR THE BIG HORN BASIN UNTIL 6 AM WEDNESDAY.

REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER
SERVICE IN RIVERTON. TAKE SHELTER INSIDE WHEN STORMS APPROACH YOUR
LOCATION.

AR

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
456 PM MDT MON MAY 23 2011

WYZ020-022-240100-
CASPER MOUNTAIN-NATRONA COUNTY LOWER ELEVATIONS-
456 PM MDT MON MAY 23 2011

...THUNDERSTORMS CONTINUE IN NATRONA COUNTY...

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP OVER NATRONA COUNTY.
MOST OF THE STORMS ARE MOVING NORTH AT 20 MPH. EXPECT THIS ACTIVITY
TO OCCUR THROUGH 7 PM.

SOME OF THE STRONGER STORMS WILL PRODUCE SMALL HAIL...WIND GUSTS TO
35 MPH...HEAVY RAIN AND DANGEROUS LIGHTNING. A FLASH FLOOD WATCH IS
IN EFFECT FOR NATRONA COUNTY UNTIL 6 AM WEDNESDAY.

REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER
SERVICE IN RIVERTON. TAKE SHELTER INSIDE WHEN STORM APPROACH YOUR
LOCATION.

AR

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
546 PM MDT MON MAY 23 2011

WYZ020-022-240030-
CASPER MOUNTAIN-NATRONA COUNTY LOWER ELEVATIONS-
546 PM MDT MON MAY 23 2011

...STRONG THUNDERSTORMS IN EAST HALF OF NATRONA COUNTY...

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP OVER THE EAST
HALF OF NATRONA COUNTY. MOST OF THE STORMS ARE MOVING NORTH AT 20
MPH. EXPECT THIS ACTIVITY TO OCCUR THROUGH 7 PM. THIS INCLUDES
CASPER...MILLS...EVANSVILLE...BAR NUNN AND MIDWEST.

SOME OF THE STRONGER STORMS WILL PRODUCE SMALL HAIL...WIND GUSTS TO
35 MPH...HEAVY RAIN AND DANGEROUS LIGHTNING. A FLASH FLOOD WATCH IS
IN EFFECT FOR NATRONA COUNTY UNTIL 6 AM WEDNESDAY.

HIGHWAY 20 26 WEST OF CASPER TO POWDER RIVER WILL EXPERIENCE HEAVY
RAIN AND SMALL HAIL THAT MAY COVER THE GROUND. THE HIGHWAY MAY BE
COVERED IN HAIL AND QUITE SLICK WEST OF CASPER.

REPORT ANY FLOODING TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER
SERVICE IN RIVERTON. TAKE SHELTER INSIDE WHEN STORM APPROACH YOUR
LOCATION.

AR