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WYC003
Special Weather Statement
...SHARP COLD FRONT TO BRING COOLER TEMPERATURES AND ACTIVE WEATHER TO START 
THE LABOR DAY WEEKEND... AN AREA OF LOW PRESSURE...AND ITS ASSOCIATED COLD 
FRONT...WILL PUSH ACROSS THE COWBOY STATE THIS HOLIDAY WEEKEND. ISOLATED TO 
SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE AHEAD OF THIS 
FRONT TODAY ACROSS CENTRAL WYOMING. A FEW STORMS...SHARP COLD FRONT TO BRING 
COOLER TEMPERATURES AND POSSIBLE MOUNTAIN SNOW THIS LABOR DAY WEEKEND... AN 
AREA OF LOW PRESSURE...AND ITS ASSOCIATED COLD FRONT...WILL PUSH ACROSS THE 
COWBOY STATE THIS HOLIDAY WEEKEND. WIDESPREAD AFTERNOON SHOWERS AND 
THUNDERSTORMS WILL BE POSSIBLE AHEAD OF THIS FRONT TODAY ACROSS THE BIGHORN 
MOUNTAINS. A FEW STORMS COULD

NWS Forecast for: Basin WY Issued by: National Weather Service Riverton, WY Last Update: 6:41 am MDT Sep 5, 2015 ============================================================================ Today: Isolated showers and thunderstorms after 2pm. Some of the storms could produce gusty winds. Mostly sunny, with a high near 84. Breezy, with a light south wind becoming southwest 16 to 21 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 20%. Tonight: Isolated showers and thunderstorms. Some of the storms could produce gusty winds. Mostly cloudy, with a low around 45. Breezy, with a west southwest wind 16 to 21 mph becoming northeast 6 to 11 mph in the evening. Winds could gust as high as 29 mph. Chance of precipitation is 20%. Sunday: Mostly sunny, with a high near 72. Breezy, with a light and variable wind becoming west 16 to 21 mph in the morning. Winds could gust as high as 31 mph. Sunday Night: Partly cloudy, with a low around 43. North wind 6 to 15 mph, with gusts as high as 21 mph. Labor Day: Mostly sunny, with a high near 72. Light and variable wind becoming north northeast around 5 mph in the afternoon. Monday Night: Partly cloudy, with a low around 42. Northeast wind around 7 mph. Tuesday: Mostly sunny, with a high near 77. Northeast wind around 5 mph becoming calm in the afternoon. Tuesday Night: Partly cloudy, with a low around 46. Wednesday: Sunny, with a high near 76. Wednesday Night: Mostly clear, with a low around 48. Thursday: Sunny, with a high near 74. Thursday Night: Mostly clear, with a low around 47. Friday: Sunny, with a high near 79. -------------------------------------------------------------------------------- Basin WY 44.36N 108.05W (Elev. 3999 ft) Visit your local NWS office at: http://www.weather.gov/riw ################################################################# ################################################################# SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 405 AM MDT SAT SEP 5 2015 WYZ003>007-010-011-016>020-022-052100- CODY FOOTHILLS-NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN- SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITIES OF...CODY...POWELL...LOVELL...GREYBULL... THERMOPOLIS...WORLAND...BUFFALO...KAYCEE...DUBOIS...RIVERTON... LANDER...JEFFREY CITY...BAIROIL...CASPER 405 AM MDT SAT SEP 5 2015 ...SHARP COLD FRONT TO BRING COOLER TEMPERATURES AND ACTIVE WEATHER TO START THE LABOR DAY WEEKEND... AN AREA OF LOW PRESSURE...AND ITS ASSOCIATED COLD FRONT...WILL PUSH ACROSS THE COWBOY STATE THIS HOLIDAY WEEKEND. ISOLATED TO SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE AHEAD OF THIS FRONT TODAY ACROSS CENTRAL WYOMING. A FEW STORMS COULD PRODUCE FREQUENT LIGHTNING AND GUSTY WINDS AT TIMES. IN ADDITION...DRY AND BREEZY WINDS AHEAD OF THE APPROACHING FRONT COULD BRING ELEVATED TO EXTREME FIRE DANGER ACROSS CENTRAL WYOMING THIS AFTERNOON. SEE THE RED FLAG WARNING FOR MORE DETAILS. THE MENTIONED COLD FRONT WILL PUSH ACROSS CENTRAL WYOMING THIS EVENING THROUGH THE OVERNIGHT HOURS. THIS WILL BRING MAINLY ISOLATED TO SCATTERED RAIN SHOWERS ACROSS CENTRAL WYOMING THROUGH THE OVERNIGHT HOURS....WITH MOUNTAIN SNOW ABOVE 8500 FEET EXPECTED ACROSS WESTERN WYOMING. ANY LINGERING SHOWERS AND MOUNTAIN SNOW IS THEN EXPECTED TO DIMINISH QUICKLY EARLY SUNDAY MORNING. DRY...BUT WINDY CONDITIONS ARE THEN EXPECTED FOR THE REST OF SUNDAY INTO LABOR DAY. MUCH COOLER TEMPERATURES ARE EXPECTED FOR SUNDAY...WITH HIGHS IN THE 60S AND 70S. MORNING LOWS ON MONDAY WILL BE IN THE 40S...WITH SLIGHTLY WARMER DAYTIME HIGHS IN THE 60S AND 70S FOR CENTRAL WYOMING. $$ -------------------------------------------------------------------------------- Hazardous Weather Outlook HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 332 AM MDT SAT SEP 5 2015 WYZ001>020-022>030-060945- 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- 332 AM MDT SAT SEP 5 2015 ...RED FLAG WARNING FOR PORTIONS OF CENTRAL WYOMING THIS AFTERNOON THROUGH SUNDAY EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT AHEAD OF AN APPROACHING COLD FRONT...AREAS OF CENTRAL WYOMING WILL SEE HUMIDITY DROP INTO THE LOW TO MID TEENS AND GUSTY WINDS WILL DEVELOP. THESE ELEMENTS COMBINED WITH CRITICALLY DRY FUELS WILL RESULT IN EXTREME FIRE BEHAVIOR THROUGH THE EVENING HOURS. ELSEWHERE...A COLD FRONT WILL MOVE INTO THE AREA LATE THIS MORNING...AND MOVE THROUGH THE AREA TONIGHT. THIS FRONT WILL BRING MUCH COOLER TEMPERATURES ACROSS THE AREA...WITH SOME SNOW EXPECTED OVER THE CENTRAL AND WESTERN MOUNTAINS OVERNIGHT. THOSE WITH OUTDOOR INTERESTS SHOULD BE PREPARED FOR CHANGING CONDITIONS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SUNDAY...A RETURN OF LOW HUMIDITY AND GUSTY WIND WILL BRING ANOTHER ROUND OF EXTREME FIRE BEHAVIOR FOR FREMONT AND NATRONA COUNTIES. THE RED FLAG WILL CONTINUE THROUGH SUNDAY EVENING. MONDAY...ELEVATED FIRE WEATHER CONDITIONS FOR FREMONT AND NATRONA COUNTIES. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT WIND GUSTS OVER 40 MPH...AND ANY SNOW ACCUMULATIONS. THANK YOU. $$ TEAM RIVERTON

Record high temperature 124.7°F Record low temperature -29.9°F Record high gust 94 mph Record high average 69.5 mph Record daily rain 1.57 in. Record low windchill -50.6°F Record high barometer 33.428 in. Record low barometer 25.160 in.
Daily high pressure 29.870 in. Daily low pressure 29.840 in. Daily low windchill 46.4°F Daily high heat index 61.0°F Daily high gust speed 21.0 mph NNW Daily high average speed 8.7 mph WNW
CURRENT WEATHER AT BASIN, WYOMING 82410
LAST READING AT TIME: 8:10 AM DATE: September 05 2015, time of next update: 8:20 am
Current WeatherHaze Current Temperature 60.6°F (15.9°C), Apparent temp 59.0°F
Maximum Temperature (since midnight)61.0°F at: 12:00 AM Minimum Temperature (since midnight)49.6°F at: 7:04 AM
Average windspeed (ten minute)0.3 mph Wind Direction (ten minute)WNW (283°)
Windchill Temperature 60.6°F Maximum Gust (last hour) 7 mph at: 7:28 AM
Maximum Gust (since midnight)21 mph at: 12:14 AM Maximum 1 minute average (since midnight)8.7 mph at: 3:28 AM
Rainfall (last hour)0.000 in. (0.0 mm) Rainfall (since midnight)0.000 in. (0.0 mm) ---
Rainfall This month 0.00 in. (0.0 mm) Rainfall To date this year 2.638 in. (67.0 mm)
Maximum rain per minute (last hour)0.000 in/min Maximum rain per hour (last 6 hours)0.000 in/hour
Yesterdays rainfall 0.000 in DewPoint 48.4°F (Wet Bulb :54.3°F )
Humidity 64 %, Humidex 62.2°F Barometer corrected to msl29.870 in. (1011.5 hPa)
Pressure change 0.00 in. (last hour) Trend (last hour)STEADY
Pressure change (last 12 hours)+0.09 in Pressure change (last 6 hours)+0.03 in
Current Indoor Temp. 71.2°F
Current Indoor hum. 31%


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Weather report/Warning/Metars

SOUTH BIG HORN COUNTY AIRPORT , WY, United States (KGEY) 44-31N 108-05W 1191M
Sep 05, 2015 - 09:53 AM EDT / 2015.09.05 1353 UTC
Wind: from the NNW (330 degrees) at 5 MPH (4 KT):0
Visibility: 10 mile(s):0
Sky conditions: clear
Temperature: 54.0 F (12.2 C)
Dew Point: 46.0 F (7.8 C)
Relative Humidity: 74%
Pressure (altimeter): 29.91 in. Hg (1012 hPa)
ob: KGEY 051353Z AUTO 33004KT 10SM CLR 12/08 A2991 RMK AO2 SLP106 T01220078
cycle: 14
Amundsen-Scott South Pole Station, Antarctica (NZSP) 90-00S 00-00E 2835M
Sep 05, 2015 - 07:50 AM EDT / 2015.09.05 1150 UTC
Wind: from the E (100 degrees) at 14 MPH (12 KT):0
Visibility: greater than 7 mile(s):0
Sky conditions: partly cloudy
Weather: ice crystals
Temperature: -76 F (-60 C)
Windchill: -115 F (-82 C):2
Pressure (altimeter): 28.64 in. Hg (969 hPa)
ob: NZSP 051150Z 10012KT 9999 IC FEW040 SCT080 M60/ A2864 RMK CLN AIR 09014KT ALL WNDS GRID 
cycle: 12
Alert Airport, Canada (CYLT) 82-31N 062-17W
Sep 05, 2015 - 05:00 AM EDT / 2015.09.05 0900 UTC
Wind: from the SSW (200 degrees) at 15 MPH (13 KT):0
Visibility: 15 mile(s):0
Sky conditions: overcast
Temperature: 33 F (1 C)
Windchill: 23 F (-5 C):1
Dew Point: 28 F (-2 C)
Relative Humidity: 80%
Pressure (altimeter): 29.81 in. Hg (1009 hPa)
ob: CYLT 050900Z 20013KT 15SM OVC070 01/M02 A2981 RMK AC8 LAST OBS/NEXT 081200 UTC SLP098
cycle: 9



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Created by "Weather Display" software version 10.37P at this start time/date 6:25:14 PM 11/24/2011
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