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FNUS76 KOTX 091630

FWSOTX



Spot Forecast for Keller Ridge RX...Colville Agency

National Weather Service Spokane WA

930 AM PDT Thu May 9 2024



Forecast is based on ignition time of 1000 PDT on May 09. 

If conditions become unrepresentative...contact the National Weather

Service.



.DISCUSSION...



Ridge of high pressure will build in over the Keller Ridge Rx

project into Saturday. This will promote warming temperatures and

drying conditions. Winds today will be from the east becoming

terrain driven on Friday. Good mixing with smoke transport to the

west and north through Friday. A dry cold front will move over the

project late Sunday. Expect southerly winds on Saturday then

southwesterly and westerly on Sunday with higher gusts near ridge

tops.



.TODAY...



Sky/weather.........Sunny. 

CWR.................0 percent. 

LAL.................1. 

Max temperature.....Valley Bottom...76.

                    Ridge Top...73.

Min humidity........23-26 percent. 

Wind (20 ft)........East-Southeast winds 5 to 8 mph. 

Mixing height.......Increasing to 7000 ft AGL between 1400 and

                    1800 PDT. 

Transport winds.....East 9 to 12 mph. 

Haines Index........3 Very Low. 



.TONIGHT...



Sky/weather.........Clear. 

CWR.................0 percent. 

LAL.................1. 

Min temperature.....Around 51. 

Max humidity........49 percent. 

Wind (20 ft)........East winds 4 to 7 mph in the evening

                    becoming downslope/downvalley 2 to 4 mph

                    after 2000. 

Mixing height.......5500 ft agl in the evening decreasing to

                    near surface after 2000 PDT. 

Transport winds.....East around 7 mph in the evening becoming

                    north around 3 mph after 2100 PDT. 

Haines Index........4 Low. 



.FRIDAY...



Sky/weather.........Sunny. 

CWR.................0 percent. 

LAL.................1. 

Max temperature.....Valley Bottom...81.

                    Ridge Top...78. 

Min humidity........21-23 percent. 

Wind (20 ft)........Downslope/Downvalley winds 1 to 3 mph early

                    in the morning becoming southeast winds

                    around 4 to 7 mph after 0900 PDT.

Mixing height.......4500 ft AGL in the morning increasing to

                    7000 ft AGL in the afternoon. 

Transport winds.....South-Southeast around 7 mph. 

Haines Index........5 Moderate. 



$$

Forecaster...SVH

Requested by...Lonnie Cawston

Type of request...PRESCRIBED

.TAG 2413353.2/OTX

.DELDT 05/09/24

.FormatterVersion 2.0.0

.EMAIL deborah.caudell@bia.gov