313
FNUS76 KOTX 180101
FWSOTX
SPOT FORECAST FOR COLD SPRING FIRE...COLVILLE BIA
NATIONAL WEATHER SERVICE SPOKANE WA
601 PM PDT THU SEP 17 2020
FORECAST IS BASED ON FORECAST START TIME OF 1800 PDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
GRADUAL IMPROVEMENT IN THE SMOKE IS EXPECTED FRIDAY INTO SATURDAY
WITH THE ARRIVAL OF A SLOW MOVING FRONTAL SYSTEM. LOOK FOR CHANCES
FOR SHOWERS TO INCREASE FRIDAY NIGHT INTO SATURDAY. RAIN CHANCES
WILL DIMINISH SATURDAY EVENING FOLLOWING THE PASSAGE OF THE FRONT.
A WIND SHIFT FROM SOUTHWEST TO NORTHWEST WINDS ARE ALSO EXPECTED
WITH THE PASSAGE OF THE FRONT LATE SATURDAY AFTERNOON. SUNDAY
WILL LIKELY FEATURE DRY WEATHER, MOSTLY CLEAR SKIES, AND RELATIVELY
LIGHT WINDS.
FRIDAY
SKY/WEATHER.........SMOKY WITH THE POTENTIAL FOR SOME IMPROVEMENT
IN THE AFTERNOON. SCATTERED HIGH CLOUDS IN THE
MORNING WITH INCREASING HIGH CLOUDS IN THE
AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....ELEVATION 900 FT: 84.
ELEVATION 3300 FT: 75.
MIN HUMIDITY........35-45 PERCENT.
WIND (20 FT)........NORTH WINDS 3 TO 5 MPH IN THE MORNING SHIFTING
TO THE SOUTH OR SOUTHEAST AROUND NOON AND
INCREASING TO 6 TO 9 MPH WITH GUSTS TO
AROUND 16 MPH AFTER 1400 PDT.
MIXING HEIGHT.......AS HIGH AS 4500 FT AGL BETWEEN 1400 AND
1800 PDT.
TRANSPORT WINDS.....NORTHEAST 3 TO 5 MPH IN THE MORNING BECOMING
SOUTHEAST 4 TO 8 MPH MID DAY AND INCREASING TO
11 TO 16 MPH BY MID AFTERNOON.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
FRIDAY NIGHT
SKY/WEATHER.........GRADUAL DECREASE IN SMOKE THROUGH THE NIGHT.
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF
SHOWERS.
CWR.................10 PERCENT.
LAL.................1.
MIN TEMPERATURE.....56.
MAX HUMIDITY........73 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH WITH EARLY EVENING
GUSTS TO 14 MPH. SOUTH WIND DECREASING TO
3 TO 6 MPH BY MID TO LATE EVENING.
MIXING HEIGHT.......DECREASING TO NEAR SURFACE BY 2100 PDT.
TRANSPORT WINDS.....SOUTH 10 TO 14 MPH EARLY IN THE EVENING
DECREASING TO 4 TO 7 MPH BY MID TO LATE
EVENING.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
SATURDAY
SKY/WEATHER.........CONTINUED IMPROVEMENT OF SMOKE. PARTLY
SUNNY WITH A 40 PERCENT CHANCE OF SHOWERS
THROUGH THE DAY.
CWR.................15 PERCENT.
LAL.................1.
MAX TEMPERATURE.....ELEVATION 900 FT: 76.
ELEVATION 3300 FT: 68.
MIN HUMIDITY........32-42 PERCENT.
WIND (20 FT)........SOUTH OR SOUTHWEST WINDS 3 TO 7 MPH IN THE
MORNING INCREASING TO 6 TO 10 MPH WITH GUSTS
TO 16 MPH IN THE AFTERNOON. WIND SHIFT TO TO
WEST OR NORTHWEST 6 TO 10 MPH BETWEEN 1500
AND 1700 PDT.
MIXING HEIGHT.......AS HIGH AS 6500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH OR SOUTHWEST 6 TO 10 MPH IN THE MORNING
BECOMING WEST OR NORTHWEST 12 TO 16 MPH
BY LATE IN THE AFTERNOON.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
FORECASTER...GK
REQUESTED BY...WALTER A SEIDEL
TYPE OF REQUEST...WILDFIRE
.TAG 2012257.12/OTX
.DELDT 09/17/20
.FORMATTERVERSION 1.0.26
.EMAIL WSEIDEL@GMAIL.COM
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