Issued by NWS Riverton, WY
FNUS75 KRIW 301557
Spot Forecast for Station 7 RX...Natrona County Fire
National Weather Service Riverton WY
957 AM MDT Thu Mar 30 2017
Forecast is based on ignition time of 0900 MDT on March 30.
If conditions become unrepresentative...contact the National Weather
.DISCUSSION...Brisk southwest winds will blow through this afternoon before
shifting to the north by 5 pm when a cold frontal passage takes place.
After the front moves through, colder air will filter into the area this evening
in time for a strong moisture laden Pacific storm to produce significant
amounts of precipitation to the burn area. The cold rain will begin tonight
around 7 pm, continuing tonight. Rain, heavy at times will occur Friday.
Rain will turn to snow Friday night before ending.
...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...
Sky/weather.........Partly cloudy (50-60 percent) then becoming
mostly cloudy (65-75 percent). Slight chance of
light rain showers late this morning. Slight chance of
rain showers late in the afternoon.
Min humidity........30-33 percent.
20-foot winds.......Southwest winds 10 to 19 mph with gusts to
around 30 mph. Winds shifting to northerly at 12 to 22 mph
Chc of wetting rain.1 percent.
Smoke dispersal.....Good increasing to excellent in the afternoon.
Sky/weather.........Cloudy (80-90 percent). Chance of rain in the
evening by 1900, then rain likely after midnight.
Min temperature.....Around 40.
Max humidity........85-88 percent.
20-foot winds.......North northeast 12 to 22 mph.
Chc of wetting rain.23 percent.
Sky/weather.........Cloudy (80-90 percent). Rain, heavy at times.
Min humidity........69-72 percent.
20-foot winds.......Northeast winds 15 to 18 mph with gusts to
around 35 mph.
Ridge top winds.....Northeast 20 to 25 mph.
Chc of wetting rain.75 percent.
.FORECAST DAYS 3 THROUGH 5...
Rain and snow likely in the evening, then chance of snow after
midnight. Lows in the upper 20s. Northeast winds around 11 mph.
Partly cloudy. Slight chance of snow. Lows in the upper 20s.
Highs in the upper 40s. Winds generally less than 10 mph.
Partly cloudy with slight chance of showers and snow showers.
Lows in the lower 30s. Highs in the mid 50s. Winds generally less
than 10 mph.
Mostly cloudy. Chance of showers and snow showers. Lows in the
upper 30s. Highs in the mid 50s. Northwest winds around 13 mph.
Requested by...Eric Christenson
Type of request...PRESCRIBED