Suppression Forecast
Issued by NWS Riverton, WY

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
111
FNUS75 KRIW 141446
FWSRIW

Spot Forecast for St Lawrence...BIA WRA
National Weather Service Riverton WY
846 AM MDT Thu Sep 14 2017

Forecast is based on request time of 0800 MDT on September 14.
If conditions become unrepresentative...contact the National Weather
Service.

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...

.DISCUSSION...Isolated showers will remain possible this morning
and into the afternoon. Skies will remain partly cloudy, with mid
to high clouds over the area. Clouds will increase this afternoon,
with showers developing across the area. Conditions will stay wet
from late this afternoon/early evening through tonight and into
the day Friday. Rain will change over to snow early Friday
morning. Only trace to 1 inch amounts are expected. A rain/snow
mix will be possible during the day Friday. This trend will
continue Friday night, with 2 to 4 inches of snow expected.

...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...

FORECASTER...LaVoie

.TODAY...

Sky/weather.........Partly cloudy (50-60 percent) then becoming
                    mostly cloudy (75-85 percent) after 12pm.
                    Isolated rain showers until late afternoon.
                    Numerous rain showers late in the afternoon.
                    Slight chance of thunderstorms during the
                    afternoon.
Max temperature.....61-64.
Min humidity........38-41 percent.
20-foot winds.......Southwest 5-15 mph shifting to southeast
                    after 12pm. East wind 10 to 20 mph between 4
                    and 6pm. Gusty and erratic winds expected
                    near thunderstorms.
Ridge top winds.....West-southwest 15 to 25 mph shifting to the
                    south late in the afternoon.
LAL.................No Tstms until 1200, then 9-15 strikes.
Chc of wetting rain.47 percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1600 ft AGL until 1200, then 6500 ft AGL.
Transport winds.....West-southwest 16 to 26 mph shifting to the south after
                    3pm.
Smoke dispersal.....Fair increasing to excellent in the afternoon.

.TONIGHT...

Sky/weather.........Cloudy (85-95 percent). Widespread rain showers
                    and slight chance of thunderstorms early in the
                    evening, then rain in the late evening and
                    overnight. Snow early in the morning.
Min temperature.....34-37.
Max humidity........96-99 percent.
20-foot winds.......East-northwest 10-20 mph, becoming 5-10 mph after
                    midnight. Gusts up to 15 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    evening.
Ridge top winds.....South around 15 mph shifting to the north around
                    10 mph early in the morning.
LAL.................9-15 strikes until 2100, then No Tstms.
Chc of wetting rain.88 percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......2000-3000 down to 1000 ft AGL after midnight.
Transport winds.....South-southwest 15 to 25 mph shifting to the
                    northwest 5 to 15 mph between midnight and 6am.
Smoke dispersal.....Fair to poor.

.FRIDAY...

Sky/weather.........Cloudy (95-100 percent). Rain.
Max temperature.....39-42.
Min humidity........83-86 percent.
20-foot winds.......East to southeast 5-10 mph.
Ridge top winds.....North 10 to 15 mph shifting to the west, then
                    shifting to the south-southeast by 12pm.
LAL.................No Tstms.
Chc of wetting rain.87 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1300-1800 ft AGL.
Transport winds.....Northwest around 10 mph becoming southwest 15-20
                    mph after 2pm.
Smoke dispersal.....Poor.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...
Cloudy. Snow likely in the evening, then chance of snow after
midnight. Lows in the mid 20s. Winds generally less than 10 mph.
.SATURDAY...
Partly cloudy. Chance of snow and slight chance of rain. Lows in
the mid 20s. Highs around 40. Winds generally less than 10 mph.
.SUNDAY...
Warmer. Partly cloudy. Lows in the upper 20s. Highs in the lower
50s. Winds generally less than 10 mph.
.MONDAY...
Partly cloudy. Isolated showers. Lows in the mid 30s. Highs in
the upper 50s. Southwest winds around 10 mph.

$$
Forecaster...LaVoie
Requested by...Hal Bromley
Type of request...WILDFIRE
.TAG 1715855.0/RIW
.EMAIL codydispatch@gmail.com



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.