Spot Forecast
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
511 FNUS75 KRIW 282321 FWSRIW Spot Forecast for King SAR...Yellowstone National Park National Weather Service Riverton WY 521 PM MDT Sat Sep 28 2024 Forecast is based on forecast start time of 0600 MDT on September 29. If conditions become unrepresentative, contact the National Weather Service .DISCUSSION... No real change from the previous forecast. Southwest winds begin to increase by the middle of Sunday morning. Near surface winds will be around 20 mph by late morning, with gusts around 30 mph. These winds increase further after 1200L, with gusts around 45 mph. Expect the strongest winds, potentially near 50 mph, at the highest elevations. Winds decrease some into Sunday night, but sustained winds around 25 or 30 mph continue, with gusts around 35 mph. Winds shift more westerly around sunrise Monday, with gusts around 25 mph. As for temperatures, highs Sunday are in the mid-60s for the higher elevations. A strong cold front moves through Sunday night, with lows around 30 Monday morning. With the winds, wind chill temperatures fall near 20 degrees. Highs Monday around 50 degrees, but wind chill will be in the lower 40s. Monday night will be colder than Sunday night. ...Thunderstorms imply strong gusty and erratic winds... ...Haines index is high level haines both day and night... .SUNDAY... Sky/weather.........Sunny (5-10 percent). Chance of pcpn......0 percent. Max temperature.....Around 67. Min humidity........17 percent. Min apparent temp...30. Surface winds (mph).Southwest winds 15 to 25 mph. Gusts up to 30 mph in the morning increasing to around 43 mph after 12 pm. Wind (20 ft)........Southwest winds 15 to 25 mph. Gusts up to 30 mph increasing to around 45 mph in the afternoon. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........5 10 15 15 10 10 10 5 10 10 10 5 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............39 39 40 49 58 62 65 66 66 66 64 62 RH..............50 50 50 37 27 23 21 21 19 18 17 19 Wind chill (F)..M M M M M M M M M M M M 20 FT wind dir..SW SW S SW SW SW SW SW SW SW W W 20 FT wind spd..13 13 14 14 16 17 18 20 20 20 21 21 20 FT wind gust.17 18 20 21 25 28 30 32 32 33 33 33 Surface wnd dir.SW SW S SW SW SW SW SW SW SW W W Surface wnd spd.16 16 18 18 20 21 23 25 25 25 26 26 Surface wnd gst.21 22 25 26 31 35 38 40 40 41 41 41 .SUNDAY NIGHT... Sky/weather.........Mostly clear (5-10 percent). Chance of pcpn......0 percent. Min temperature.....Around 30. Max humidity........63 percent. Min apparent temp...20. Surface winds (mph).Breezy. Southwest winds 20 to 30 mph. Gusts up to 45 mph decreasing to 30 mph after 3 am. Wind (20 ft)........Breezy. Southwest winds 18 to 26 mph. Gusts up to 45 mph decreasing to 35 mph after 3 am. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........10 5 10 10 5 5 5 5 5 5 5 5 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............59 54 50 47 45 43 41 40 38 37 35 34 RH..............20 26 30 32 33 36 39 42 46 50 56 58 Wind chill (F)..M M M M M M M M M M M M 20 FT wind dir..W W W SW SW SW SW SW SW SW SW SW 20 FT wind spd..19 21 24 26 26 26 25 24 23 22 20 18 20 FT wind gust.33 34 36 37 35 34 32 31 30 29 26 24 Surface wnd dir.W W W SW SW SW SW SW SW SW SW SW Surface wnd spd.24 26 30 33 33 33 31 30 29 28 25 23 Surface wnd gst.41 43 45 46 44 43 40 39 38 36 32 30 .MONDAY... Sky/weather.........Sunny (5-25 percent). Chance of pcpn......0 percent. Max temperature.....Around 50. Min humidity........16 percent. Min apparent temp...20. Surface winds (mph).West winds 15 to 20 mph with gusts to around 28 mph. Wind (20 ft)........West winds 12 to 18 mph with gusts to around 22 mph. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........5 5 10 10 10 10 5 15 20 30 30 30 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............33 32 33 36 40 42 45 48 49 49 49 48 RH..............61 63 58 50 39 31 23 19 18 17 16 17 Wind chill (F)..M M M M M M M M M M M M 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..17 15 13 13 12 13 13 13 14 14 13 13 20 FT wind gust.22 20 19 19 19 19 20 21 22 22 22 21 Surface wnd dir.W W W W W W W W W W W W Surface wnd spd.21 19 16 16 15 16 16 16 18 18 16 16 Surface wnd gst.28 25 24 24 24 24 25 26 28 28 28 26 .FORECAST DAYS 3 THROUGH 5... .TUESDAY... Partly cloudy. Lows in the upper 20s. Highs in the lower 50s. West to southwest winds 10 to 15 mph, with afternoon gusts around 25 mph. .WEDNESDAY... Mostly clear. Lows in the mid 30s. Highs in the lower 50s. West to southwest winds around 18 mph, with afternoon gusts around 30 mph. .THURSDAY... Mostly clear. Lows in the lower 30s. Highs around 50. West to southwest winds around 15 mph, with afternoon gusts around 24 mph. $$ Forecaster...Wittmann Requested by...Jim Warren Type of request...SAR .TAG 2423196.0/RIW .DELDT 09/28/24 .FormatterVersion 2.0.0 .EMAIL marlee_jennings@nps.gov,jim_warren@nps.gov