912 
FNUS75 KPIH 151028
FWSPIH

Spot Forecast for Self Help RX...FS-CTF
National Weather Service Pocatello ID
428 AM MDT Sun Sep 15 2019

Forecast is based on ignition time of 0700 MDT on September 15. 
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (208) 232-9357, if you have questions
or concerns with this forecast.

.DISCUSSION...The upper level high pressure that has brought all the
warming and drying has another day and a half of keeping conditions
that way, with the driest and warmest conditions today. If fuels were
critical, the combination of wind and humidity, plus a Haines of 6
would make this a critical day. This high starts breaking Monday down 
as a fairly strong low moves through the Pacific Northwest. This will 
cool temperatures and raise humidity, but increase the wind. On 
Tuesday, the low will cross through southern Idaho and drop 
temperatures significantly--as much as 25 degrees, with a likewise 
rise in humidity with very windy conditions possible.

.TODAY...

Sky/weather.........Sunny. 
CWR.................Zero. 
LAL.................1. 
Max temperature.....6100ft elevation...80. 
Min humidity........6100ft elevation...12 percent. 
Wind (20 ft)........East 4 to 10 mph, by 0900 decreasing to 1 to 6
                     mph. By 1000 wind becoming west 4 to 10 mph gusts
                     to 18 mph. By 1400, wind becoming southwest 10 
                     to 16 mph gusts to 30 mph. 
Mixing height.......Increasing to 8500-9500ft AGL in the afternoon. 
Transport winds.....South 24 mph. 
Haines Index........6 High. 
Rainfall amount.....None. 

.TONIGHT...

Sky/weather.........Clear then becoming partly cloudy. 
CWR.................Zero. 
LAL.................1. 
Min temperature.....6100ft elevation...58. 
Max humidity........6100ft elevation...36 percent. 
Wind (20 ft)........Southwest 8 to 14 mph gusts to 26 mph, by
                     1900 becoming south 4 to 10 mph gusts to
                     15 mph. By midnight, wind becoming east
                     4 to 10 mph. 
Mixing height.......Inversion top around 6500ft elevation. 
                     Above inversion, mixing height around
                     800ft AGL.
Transport winds.....Southwest 20 mph above inversion, south
                     11 mph under the inversion shifting to
                     east. 
Haines Index........6. 
Rainfall amount.....None. 

.MONDAY...

Sky/weather.........Mostly cloudy then becoming partly cloudy. 
*                     Slight chance of showers in the afternoon. 
CWR.................5 percent. 
LAL.................1. 
Max temperature.....6100ft elevation...77. 
Min humidity........6100ft elevation...23 percent. 
Wind (20 ft)........East 1 to 6 mph, by 1000 becoming west 2 to
                     8 mph gusts to 14 mph. By 1200 wind becoming
                     16 to 24 mph gusts to 46 mph. 
Mixing height.......Increasing to 8000-9000ft AGL in the afternoon. 
Transport winds.....Southwest 31 mph. 
Haines Index........5. 
Rainfall amount.....0.01 inch. 

$$
Forecaster...Messick
Requested by...Roo Phelps
Type of request...PRESCRIBED
.TAG 1915458.0/PIH
.DELDT 09/15/19
.EMAIL rebecca.phelps@usda.gov