000 FNUS56 KPDT 252226 FWFPDT LAND MANAGEMENT FORECAST NATIONAL WEATHER SERVICE PENDLETON OR 330 PM PDT THU APR 25 2002 SMITH ...COOL AND UNSETTLED THIS WEEKEND... DISCUSSION...A LARGE LOW PRESSURE SYSTEM INITIALLY OFF THE GULF OF ALASKA WILL STRENGTHEN AS IT MOVES SOUTH INTO THE PACIFIC NORTHWEST. MOST OF THE PRECIPITATION WILL BE WEST OF THE CASCADES...YET THERE IS ENOUGH STRENGTH AND MOISTURE FOR AREAS OF RAIN (SNOW ABOVE 5000 FEET) SATURDAY. THE SYSTEM WILL TRACK SOUTH INTO CALIFORNIA WITH PRECIPITATION TAPERING OFF BY LATE SUNDAY. ***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS*** ***CWR = CHANCE OF A WETTING RAIN WHICH IS GREATER THAN .10*** ZONE: 630...CENTRAL MOUNTAINS OF OREGON: TONIGHT... WEATHER...INCREASING CLOUDS. MIN TEMP...28-38 MOUNTAINS...30-40 VALLEYS. 24 HR TREND: UP 7-10. MAX RH....60-70 PCT MOUNTAINS...50-60 PCT VALLEYS. 24 HR TREND: UP 5 PCT. 20 FT WIND...NW-N 3-7 MPH...BECOMING DRAINAGE 2-5 MPH AFTER SUNSET. RIDGE TOP WIND...NW 4-8 MPH. CWR...0 PCT. LAL...1. FRIDAY... WEATHER...MOSTLY CLOUDY WITH A CHANCE OF AFTERNOON SHOWERS. MAX TEMP...49-59 MOUNTAINS...56-63 VALLEYS. 24 HR TREND: DOWN 5. MIN RH...31-41 PCT MOUNTAINS...21-31 PCT VALLEYS. 24 HR TREND: UP 10 PCT. 20 FT WIND...NW 3-7 MPH. RIDGE TOP WIND...NW 5-10 MPH. CWR...10 PCT. LAL...1. FRIDAY NIGHT... WEATHER...SHOWERS LIKELY. SNOW LEVEL 4500 FEET. MIN TEMP...33-43 MOUNTAINS...35-45 VALLEYS. 24 HR TREND: UP 5. MAX RH....80-90 PCT MOUNTAINS...70-80 PCT VALLEYS. 24 HR TREND: UP 20 PCT. 20 FT WIND...SW-W 3-7 MPH. RIDGE TOP WIND...W-NW 4-8 MPH. CWR...30 PCT. LAL...1. SATURDAY... WEATHER...SHOWERS LIKELY. SNOW ABOVE 5000 FEET. MAX TEMP...41-51 MOUNTAINS...48-55 VALLEYS. 24 HR TREND: DOWN 8. MIN RH...60-70 PCT MOUNTAINS...50-60 PCT VALLEYS. 24 HR TREND: UP 25-30 PCT. 20 FT WIND...NW 4-9 MPH. RIDGE TOP WIND...NW 6-11 MPH. CWR...40 PCT. LAL...1. ZONES: 632,633,634,635 AND 638...NORTHEAST OREGON MOUNTAINS AND THE HIGHER TERRAIN OF SOUTHEAST WASHINGTON: TONIGHT... WEATHER...INCREASING CLOUDS. MIN TEMP...22-32 MOUNTAINS...28-38 VALLEYS. 24 HR TREND: UP 5. MAX RH...77-87 PCT MOUNTAINS...57-67 PCT VALLEYS. 24 HR TREND: UP 5-8 PCT. 20 FT WIND...NW-N 3-6 MPH...BECOMING DRAINAGE 2-5 MPH AFTER SUNSET. RIDGE TOP WIND...NW 5-10 MPH. CWR...0 PCT. LAL...1. FRIDAY... WEATHER...MOSTLY CLOUDY WITH A CHANCE OF AFTERNOON SHOWERS. MAX TEMP...40-50 MOUNTAINS...48-58 VALLEYS. 24 HR TREND: DOWN 7-10 MIN RH...43-53 PCT MOUNTAINS...28-38 PCT VALLEYS. 24 HR TREND: UP 10-15 PCT. 20 FT WIND...NW-N 3-6 MPH. RIDGE TOP WIND...NW 5-10 MPH. CWR...20 PCT. LAL...1. FRIDAY NIGHT... WEATHER...SHOWERS LIKELY. SNOW LEVEL 4500 FEET. MIN TEMP...29-39 MOUNTAINS...35-45 VALLEYS. 24 HR TREND: UP 5-8. MAX RH...85-100 PCT MOUNTAINS...75-90 PCT VALLEYS. 24 HR TREND: UP 10-15 PCT. 20 FT WIND...SW-W 3-6 MPH. RIDGE TOP WIND...SW-W 4-7 MPH. CWR...40 PCT. LAL...1. SATURDAY... WEATHER...SHOWERS LIKELY. SNOW LEVEL 5000 FEET. MAX TEMP...33-43 MOUNTAINS...40-50 VALLEYS. 24 HR TREND: DOWN 5-8. MIN RH...70-80 PCT MOUNTAINS...75-85 PCT VALLEYS. 24 HR TREND: UP 25-30 PCT. 20 FT WIND...NW 4-9 MPH. RIDGE TOP WIND...NW 6-11 MPH WITH GUSTS TO 22 MPH. CWR...20 PCT. LAL...1. ZONE 631 AND 675...COLUMBIA BASIN OF OREGON AND THE COLUMBIA BASIN OF WASHINGTON: TONIGHT... WEATHER...INCREASING CLOUDS. MIN TEMP...33-43. 24 HR TREND: UP 5. MAX RH...62-72 PCT. 24 HR TREND: UP 5-8 PCT. 20 FT WIND...NW-N 3-7 MPH...BECOMING DRAINAGE 1-3 MPH AFTER SUNSET. RIDGE TOP WIND...NW-N 4-8 MPH. CWR...0 PCT. LAL...1. FRIDAY... WEATHER...MOSTLY CLOUDY WITH A CHANCE OF AFTERNOON SHOWERS OVER THE COLUMBIA GORGE. MAX TEMP...55-60 RIDGES...56-63 VALLEYS. 24 HR TREND: DOWN 5-7. MIN RH...33-43 PCT RIDGES...25-35 PCT VALLEYS. 24 HR TREND: UP 10-12 PCT. 20 FT WIND...W-NW 4-8 MPH. RIDGE TOP WIND...NW 4-9 MPH. CWR...20 PCT. LAL...1. FRIDAY NIGHT... WEATHER...CLOUDY WITH A CHANCE OF SHOWERS. MIN TEMP...36-46. 24 HR TREND: UP 2-5. MAX RH...75-85 PCT. 24 HR TREND: UP 10-15 PCT. 20 FT WIND...NW 3-7 MPH. RIDGE TOP WIND...NW-N 3-7 MPH. CWR...20 PCT. LAL...1. SATURDAY... WEATHER...CLOUDY WITH A CHANCE OF SHOWERS. MAX TEMP...50-55 RIDGES...53-60 VALLEYS. 24 HR TREND: DOWN 5. MIN RH...53-63 PCT RIDGES...45-55 PCT VALLEYS. 24 HR TREND: UP 20-25 PCT. 20 FT WIND...NW 4-8 MPH. RIDGE TOP WIND...NW 4-9 MPH. CWR...30 PCT. LAL...1. ZONE 681...YAKAMA ALPINE DISTRICT: TONIGHT... WEATHER...INCREASING CLOUDS. MIN TEMP...25-35. 24 HR TREND: UP 5. MAX RH...62-72 PCT MOUNTAINS...53-63 PCT VALLEYS. 24 HR TREND: UP 7-10. 20 FT WIND...N 3-7 MPH. RIDGE TOP WIND...W-NW 4-8 MPH. CWR...0 PCT. LAL...1. FRIDAY... WEATHER...MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. MAX TEMP...36-46 RIDGES...40-50 VALLEYS 24 HR TREND: DOWN 5-10. MIN RH...45-55 PCT MOUNTAINS...35-45 PCT VALLEYS. 24 HR TREND: UP 15 PCT. 20 FT WIND...NW 3-7 MPH...INCREASING TO 5-10 MPH. RIDGE TOP WIND...W-NW 5-10 MPH. CWR...20 PCT. LAL...1. FRIDAY NIGHT... WEATHER...SHOWERS LIKELY. SNOW LEVEL 4500 FEET. MIN TEMP...33-43. 24 HR TREND: UP 8. MAX RH...85-100 PCT MOUNTAINS...85-95 PCT VALLEYS. 24 HR TREND: UP 25-30 PCT. 20 FT WIND...W-NW 3-7 MPH. RIDGE TOP WIND...NW 4-8 MPH. CWR...50 PCT. LAL...1. SATURDAY... WEATHER...MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. SNOW LEVEL 5000 FEET. MAX TEMP...36-46 RIDGES...40-50 VALLEYS 24 HR TREND: LITTLE CHANGE. MIN RH...65-75 PCT MOUNTAINS...55-65 PCT VALLEYS. 24 HR TREND: UP 20 PCT. 20 FT WIND...W-NW 5-10 MPH. RIDGE TOP WIND...NW 5-10 MPH. CWR...30 PCT. LAL...1. EXTENDED FORECAST...SUNDAY THROUGH TUESDAY... WEATHER: SUNDAY...MOSTLY CLOUDY WITH A CHANCE OF SHOWERS OVER THE OREGON MOUNTAINS. LOWS 25-35 IN THE MOUNTAINS...AND 35-45 IN THE VALLEYS/BASIN. HIGHS 45-55 IN THE MOUNTAINS...AND 55-65 IN THE VALLEYS/BASIN. MONDAY AND TUESDAY...DRY. LOWS IN THE 30S IN THE MOUNTAINS...AND 35-45 IN THE VALLEYS/BASIN. HIGHS MAINLY IN THE 50S IN THE MOUNTAINS AND 60S IN THE VALLEYS/BASIN. WIND OUTLOOK: SUNDAY...W-NW 4-8 MPH. MONDAY AND TUESDAY...W-NW 5-15 MPH. 6-10 DAY OUTLOOK...WEDNESDAY MAY 1 THROUGH SUNDAY MAY 5... BELOW NORMAL TEMPERATURES AND NORMAL PRECIPITATION.