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XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX NWS Forecast for: Basin WY Issued by: National Weather Service Riverton, WY Last Update: 4:58 pm MST Feb 22, 2017 ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ Tonight: A slight chance of rain and snow before 8pm, then a chance of snow. Mostly cloudy, with a low around 26. Light west northwest wind becoming north northwest 6 to 11 mph in the evening. Chance of precipitation is 30%. Thursday: Snow, mainly after 2pm. High near 34. Breezy, with a northwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible. Thursday Night: Snow. Low around 18. Northwest wind 7 to 10 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible. Friday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 31. Northwest wind 6 to 11 mph becoming light north in the morning. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible. Friday Night: Mostly cloudy, with a low around 15. Northeast wind around 5 mph becoming calm. Saturday: Partly sunny, with a high near 29. South wind 3 to 6 mph. Saturday Night: Partly cloudy, with a low around 7. South southeast wind 3 to 5 mph. Sunday: Mostly sunny, with a high near 28. Sunday Night: Partly cloudy, with a low around 10. Monday: Partly sunny, with a high near 32. Monday Night: A chance of snow. Mostly cloudy, with a low around 14. Tuesday: A slight chance of snow. Partly sunny, with a high near 32. Tuesday Night: A slight chance of snow. Mostly cloudy, with a low around 14. Wednesday: Mostly sunny, with a high near 34. Basin WY 44.36N 108.05W (Elev. 3999 ft) Visit your local NWS office at: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Special Weather Statement Special Weather Statement National Weather Service Riverton WY 104 PM MST Wed Feb 22 2017 WYZ004-231200- North Big Horn Basin- 104 PM MST Wed Feb 22 2017 ...Very strong north wind and light snow or flurries on Thursday... A major storm system developing over southern Wyoming later tonight and Thursday will help create very strong north winds across the north end of the Big Horn Basin on Thursday with periods of light snow or flurries. Accumulations will be very little with generally a skiff to an inch in most areas. However...north wind will blow 25 to 40 mph with gusts over 50 mph possible. $$ Team Riverton Hazardous Weather Outlook Hazardous Weather Outlook National Weather Service Riverton WY 149 PM MST Wed Feb 22 2017 WYZ001>020-022>030-231200- 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- 149 PM MST Wed Feb 22 2017 ...Flood Warning remains in effect for the Big Horn River roughly between Manderson and Greybull into Thursday... ...Blizzard Warnings for South Pass...Green Mountains and Rattlesnake Range area and Eastern Sweetwater County including Interstate 80 developing tonight and continuing into Friday morning... ...Winter Storm Warnings across much of the central and southern Wyoming late tonight through Friday morning... ...Winter Weather Advisories for the Big Horn Mountains...Cody Foothills and Hot Springs County Thursday through Friday morning... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and Tonight Ice jam flooding continues across portions of the Big Horn Basin especially along the Big Horn River in Big Horn County. A significant winter storm will develop tonight over southern portions, bringing moderate to heavy snow across eastern, central and southern portions of the forecast area. Please see the highlights for further details. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Thursday and Friday...Significant snow will fall during the day Thursday across Johnson, Natrona, Fremont and Sweetwater counties, before subsiding by mid day Friday. The heaviest snow is expected across Natrona...Fremont and Eastern Sweetwater Counties. Gusty north to northeast winds will develop Thursday morning, from Buffalo to Casper to South Pass to Rock Springs, causing areas of blowing and drifting snow and blizzard conditions in some areas. Winds will gradually subside Thursday night. Light to moderate snow will also return across the far western mountains. Sunday night through Monday night...Significant snow possible across western valleys and mountains. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any river or creek flooding, as well as snowfall amounts. Thank you! $$ Team Riverton Flood Warning Flood Warning National Weather Service Riverton WY 1250 PM MST WED FEB 22 2017 WYC003-232030- /O.EXT.KRIW.FA.W.0007.000000T0000Z-170223T2030Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Big Horn- 1250 PM MST WED FEB 22 2017 The National Weather Service in Riverton has extended the * Flood Warning for... An Ice Jam in... Central Big Horn County in central Wyoming... * Until 130 PM MST Thursday * At 1240 PM MST, Emergency Management in Greybull reported that there were open channels of flowing water on both sides of the Big Horn River. There is also flowing water on top of the ice upstream of the highway bridge. The ice is thinning considerably along the main channel upstream and downstream of the highway bridge. Emergency Management also reported that the main channel is open with flowing water along the Big Horn River at Basin. Ice jams are occurring downstream between Basin and Greybull. * The stage at the Big Horn River at Greybull at 12 pm this afternoon was around 91.0 feet. The river is expected to fluctuate around 91.0 feet through Thursday morning. Flood stage at the Big Horn River is at 92.0 feet. * Much cooler temperatures are expected by Thursday and Friday which should decrease the number of ice jams along the Big Horn River from downstream of Basin to Greybull. PRECAUTIONARY/PREPAREDNESS ACTIONS... River ice is very unpredictable, and may move and jam with little notice. Any ice jam can cause flooding, as the ice dams the river, causing rapid increases in river levels in a short period of time. People living near the Big Horn River should monitor the situation closely and be ready to move to higher ground if flooding occurs. && LAT...LON 4456 10804 4439 10799 4439 10807 4455 10813 $$ Fahey Hydrologic Outlook Hydrologic Outlook WYC003-240406- Hydrologic Outlook National Weather Service Riverton WY 906 AM MST WED FEB 22 2017 ...Colder temperatures through early next week will slow down ice jam flooding along the Big Horn River... High temperatures along the Big Horn River are expected to cool down into the upper 20s to lower 30s from Thursday through Monday of next week. Low temperatures along the the Big Horn River are expected to be between 10 to 20 degrees from Thursday through Tuesday of next week. Flooding from ice jamming expected to slow down with the cooler temperatures through early next week. Also, no significant new ice is expected to form on the the Big Horn River with forecasted low temperatures next week. People who live next to the Big Horn River should still be vigilant of the possibility of flooding due to ice jams. Ice jams are very unpredictable and can occur very quickly with little or no notice. Move to higher ground if flooding is occurring due to ice jams. Graphical forecasts are available at: Visit and select the rivers & lakes tab for graphical forecasts and additional information. $$ jtfahey ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

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 29.811 in. Daily low pressure 29.663 in. Daily low windchill 21.6°F Daily high heat index 32.2°F Daily high gust speed 11.6 mph WNW Daily high average speed 7.8 mph WNW
LAST READING AT TIME: 6:10 PM DATE: February 23 2017, time of next update: 6:20 pm
Current WeatherNight time/Dry Current Temperature 28.6°F (-1.9°C), Apparent temp 22.2°F
Maximum Temperature (since midnight)32.2°F at: 12:23 AM Minimum Temperature (since midnight)28.6°F at: 5:27 PM
Average windspeed (ten minute)4.9 mph Wind Direction (ten minute)NW (326°)
Windchill Temperature 23.1°F Maximum Gust (last hour)10 mph at: 5:49 PM
Maximum Gust (since midnight)12 mph at: 1:34 PM Maximum 1 minute average (since midnight)7.8 mph at: 2:51 PM
Rainfall (last hour)0.000 in. (0.0 mm) Rainfall (since midnight)0.000 in. (0.0 mm) ---
Rainfall This month 0.04 in. (1.0 mm) Rainfall To date this year 0.118 in. (3.0 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 16.4°F (Wet Bulb :25.1°F )
Humidity 60 %, Humidex 21.8°F Barometer corrected to msl29.811 in. (1009.5 hPa)
Pressure change +0.03 in. (last hour) Trend (last hour)RISING SLOWLY
Pressure change (last 12 hours)+0.12 in Pressure change (last 6 hours)+0.09 in
Current Indoor Temp. 76.6°F
Current Indoor hum. 18%

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Weather report/Warning/Metars

SOUTH BIG HORN COUNTY AIRPORT , WY, United States (KGEY) 44-31N 108-05W 1191M
Feb 23, 2017 - 07:53 PM EST / 2017.02.24 0053 UTC
Wind: from the WNW (300 degrees) at 16 MPH (14 KT):0
Visibility: 10 mile(s):0
Sky conditions: overcast
Temperature: 28.9 F (-1.7 C)
Windchill: 17 F (-8 C):1
Dew Point: 19.0 F (-7.2 C)
Relative Humidity: 66%
Pressure (altimeter): 29.83 in. Hg (1010 hPa)
ob: KGEY 240053Z AUTO 30014KT 10SM OVC090 M02/M07 A2983 RMK AO2 SLP133 T10171072
cycle: 1
Amundsen-Scott South Pole Station, Antarctica (NZSP) 90-00S 00-00E 2835M
Feb 23, 2017 - 06:50 PM EST / 2017.02.23 2350 UTC
Wind: from the ENE (070 degrees) at 16 MPH (14 KT):0
Visibility: less than 1 mile:0
Sky conditions: overcast
Weather: light snow grains; blowing snow
Temperature: -34 F (-37 C)
Windchill: -63 F (-53 C):2
Pressure (altimeter): 28.78 in. Hg (974 hPa)
ob: NZSP 232350Z 07014KT 1200 -SG BLSN OVC025 M37/ A2878 RMK CLN AIR 05012KT ALL WNDS GRID SDP/HDN
cycle: 0
Alert Airport, Canada (CYLT) 82-31N 062-17W
Feb 23, 2017 - 03:00 PM EST / 2017.02.23 2000 UTC
Wind: from the NNE (020 degrees) at 6 MPH (5 KT):0
Visibility: 2 mile(s):0
Sky conditions: overcast
Weather: light snow; mist
Temperature: -27 F (-33 C)
Windchill: -43 F (-42 C):2
Dew Point: -34 F (-37 C)
Relative Humidity: 67%
Pressure (altimeter): 30.21 in. Hg (1023 hPa)
ob: CYLT 232000Z 02005KT 2SM -SN BR OVC020 M33/M37 A3021 RMK SC8 LAST OBS/NEXT 241300 UTC SLP238
cycle: 20

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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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The Weather Station, information and web page provided at is in memory of "Our Parents": CLIVE AND RUTH STOELK, of Basin, Wyoming and LEONARD AND LUCILLE HENDERSON, of Greybull, Wyoming. Thank you for looking. We hope you find this weather information helpful