Displaying AFOS PIL: FWFPDT
Product Timestamp: 2002-07-21 23:08 UTC

Previous Latest Next
All KPDT Products (21 Jul 2002) All FWF Products (21 Jul 2002) Text as Image Download Text
Bulk Download Bulk Download 
000 
FNUS56 KPDT 212308 CCA
FWFPDT

FIRE WEATHER FORECAST
NATIONAL WEATHER SERVICE PENDLETON OR
330 PM PDT SUN JUL 21 2002       EARLE

...CHANCE FOR DRY THUNDERSTORMS MONDAY AFTERNOON THROUGH TUESDAY 
NIGHT... 

DISCUSSION...HIGH PRESSURE AND A VERY DRY AIR MASS WILL PREVAIL 
THROUGH TUESDAY. HOWEVER...AN UPPER LEVEL LOW PRESSURE AREA WILL 
SPREAD MID AND HIGH LEVEL MOISTURE INTO SOUTHERN OREGON MONDAY WHICH 
WILL PRODUCE A SLIGHT CHANCE OF DRY THUNDERSTORMS OVER FIRE WEATHER 
ZONES 630 AND 632.  THE ELEVATED MOISTURE AND THREAT OF DRY 
THUNDERSTORMS WILL SPREAD NORTH TUESDAY AND TUESDAY NIGHT.  BY 
WEDNESDAY...THE ATMOSPHERE IS EXPECTED TO MOISTEN UP ENOUGH SO THAT 
THE THUNDERSTORMS SHOULD BE PRIMARILY WET.

***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS*** 
***CWR = CHANCE OF A WETTING RAIN WHICH IS GREATER THAN .10***
***WINDS ARE 20 FOOT/10 MINUTE AVERAGE***

HIGH ELEVATION HAINES INDEX OBSERVED SUNDAY MORNING JUL 21.
SALEM...3   MEDFORD...3    SPOKANE...2    BOISE...3

ZONE: 630...CENTRAL MOUNTAINS OF OREGON:

...A CHANCE FOR DRY THUNDERSTORMS MONDAY AND TUESDAY...

TONIGHT...
     WEATHER...CLEAR.
     MIN TEMP...54-60 RIDGES...48-54 VALLEYS.
      24 HR TREND...UP 2-4.
     MAX RH...25-35 PCT RIDGES...45-55 PCT VALLEYS. 
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...N-NW 5-10 MPH...BECOMING DOWNSLOPE/DOWN VALLEY     
                  2-5 MPH AFTER DARK.  
     RIDGE TOP WIND...NE-E 7-12 MPH.
     CWR...0 PCT. 
     LAL...1.
     HAINES...4 (LOW).

MONDAY...
     WEATHER...PARTLY CLOUDY WITH A SLIGHT CHANCE FOR AFTERNOON DRY  
               THUNDERSTORMS.
     MAX TEMP...82-88 RIDGES...90-96 VALLEYS.
      24 HR TREND...UP 1-3.
     MIN RH...10-15 PCT RIDGES...6-12 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH WITH AFTERNOON GUSTS TO   
                  11 MPH...BECOMING N IN THE AFTERNOON.
     RIDGE TOP WIND....NW-N 5-10 MPH.
     CWR...0 PCT.
     LAL...2.
     HAINES...5 (MODERATE).

MONDAY NIGHT...
     WEATHER...PARTLY CLOUDY WITH A SLIGHT CHANCE FOR EVENING DRY    
               THUNDERSTORMS.
     MIN TEMP...56-66.
      24 HR TREND...UP 2-4 RIDGES...UP 10 VALLEYS.
     MAX RH...40-55 PCT.
      24 HR TREND...UP 15 PCT RIDGES...LITTLE CHANGE VALLEYS.
     20 FT WIND...N-NW 5-10 MPH...BECOMING DOWNSLOPE/DOWN VALLEY     
                  2-5 MPH OVERNIGHT.
     RIDGE TOP WIND...NW-N 7-12 MPH.
     CWR...0 PCT.
     LAL...2.
     HAINES...4 (LOW).

TUESDAY...
     WEATHER...PARTLY CLOUDY WITH A CHANCE FOR DRY THUNDERSTORMS.
     MAX TEMP...80-86 RIDGES...88-94 VALLEYS.
      24 HR TREND...DOWN 1-3.
     MIN RH...10-20 PCT.
      24 HR TREND...UP 5 PCT.
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH WITH AFTERNOON GUSTS TO   
                  11 MPH...BECOMING N IN THE AFTERNOON.
     RIDGE TOP WIND....W 5-10 MPH.
     CWR...LESS THAN 10 PCT.
     LAL...6.
     HAINES...5 (MODERATE).

ZONES: 632,633,634,635, 638...NORTHEAST OREGON MOUNTAINS: 

...A CHANCE FOR DRY THUNDERSTORMS MONDAY AFTERNOON AND EVENING SOUTH 
OF THE JOHN DAY RIVER SPREADING THROUGHOUT THE AREA TUESDAY...

TONIGHT...
     WEATHER...CLEAR.
     MIN TEMP...56-64...EXCEPT 46-54 MID SLOPES.
      24 HR TREND...UP 2-4.
     MAX RH...30-40 PCT RIDGES...45-55 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE. 
     20 FT WIND...BECOMING DOWNSLOPE/DOWN VALLEY 2-5                 
                  MPH...OCCASIONAL N 5-10 MPH IN THE EVENING.
     RIDGE TOP WIND...NE-E 7-12 MPH.              
     CWR...0 PCT.
     LAL...1. 
     HAINES...4 (LOW).

MONDAY...
     WEATHER...BECOMING PARTLY CLOUDY. A SLIGHT CHANCE FOR AFTERNOON 
               DRY THUNDERSTORMS SOUTH OF THE JOHN DAY RIVER.  
     MAX TEMP...82-88 MOUNTAINS...90-96 VALLEYS.
      24 HR TREND...UP 1-3. 
     MIN RH...15-20 PCT MOUNTAINS...8-12 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.  
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH...OCCASIONAL N IN THE     
                  AFTERNOON.
     RIDGE TOP WIND...NW-N 5-10 MPH.
     CWR...0 PCT.
     LAL...2.
     HAINES...5 (MODERATE).

MONDAY NIGHT...
     WEATHER...PARTLY CLOUDY. A SLIGHT CHANCE FOR EVENING DRY       
               THUNDERSTORMS SOUTH OF THE JOHN DAY RIVER.
     MIN TEMP...56-66.
      24 HR TREND...UP 1-3 RIDGES...UP 10 VALLEYS.
     MAX RH...40-55 PCT.
      24 HR TREND...UP 10-15 PCT RIDGES...LITTLE CHANGE VALLEYS.
     20 FT WIND...BECOMING DOWNSLOPE/DOWN VALLEY 2-5                 
                  MPH...OCCASIONAL N 5-10 MPH IN THE EVENING.
     RIDGE TOP WIND...N-NE 5-10 MPH.
     CWR...0 PCT.
     LAL...2.
     HAINES...4 (LOW).

TUESDAY...
     WEATHER...PARTLY CLOUDY WITH A CHANCE OF DRY THUNDERSTORMS.
     MAX TEMP...84-90 MOUNTAINS...92-98 VALLEYS.
      24 HR TREND...UP 1-3.
     MIN RH...15-20 PCT MOUNTAINS...8-12 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH.
     RIDGE TOP WIND....W 5-10 MPH.
     CWR...LESS THAN 10 PCT.
     LAL...6.
     HAINES...5 (MODERATE).

ZONE 631 AND 675...COLUMBIA BASIN OF OREGON AND THE COLUMBIA BASIN 
OF WASHINGTON:

...A SLIGHT CHANCE FOR DRY THUNDERSTORMS TUESDAY...

TONIGHT...
     WEATHER...CLEAR. 
     MIN TEMP...56-66.
      24 HR TREND...UP 2-4.
     MAX RH...40-50 PCT RIDGES...50-60 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...NW-N 5-10 MPH...BECOMING DRAINAGE 1-4 MPH.  
     RIDGE TOP WIND...NE 5-10 MPH
     CWR...0 PCT.
     LAL...1.
     HAINES...4 (LOW).

MONDAY...
     WEATHER...MOSTLY SUNNY.
     MAX TEMP...88-94 RIDGES AND 94-100 VALLEYS. 
      24 HR TREND...UP 2-4.
     MIN RH...15-20 PCT RIDGES...8-14 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...BECOMING NW-N 5-10 MPH.  
     RIDGE TOP WIND...N-NE 5-10 MPH. 
     CWR...0 PCT.
     LAL...1.
     HAINES...5 (MODERATE).

MONDAY NIGHT...
     WEATHER...MOSTLY CLEAR.
     MIN TEMP...60-70.
      24 HR TREND...UP 4-6.
     MAX RH...45-60 PCT.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...N-NE 5-10 MPH...BECOMING DRAINAGE 1-4 MPH.
     RIDGE TOP WIND...N-NE 5-10 MPH.
     CWR...0 PCT.
     LAL...1.
     HAINES...4 (LOW).

TUESDAY...
     WEATHER...PARTLY CLOUDY WITH A SLIGHT CHANCE FOR AFTERNOON 
               DRY THUNDERSTORMS.
     MAX TEMP...90-96 RIDGES AND 96-102 VALLEYS.
      24 HR TREND...UP 1-3.
     MIN RH...15-22 PCT RIDGES...10-16 PCT VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...BECOMING W-NW 5-10 MPH.
     RIDGE TOP WIND....W 5-10 MPH...EXCEPT 10-15 MPH THROUGH THE     
                       COLUMBIA RIVER GORGE LATE.
     CWR...0 PCT.
     LAL...2.
     HAINES...4 (LOW).

ZONE 681...YAKAMA ALPINE DISTRICT:

...A SLIGHT CHANCE FOR DRY THUNDERSTORMS TUESDAY...

TONIGHT...
     WEATHER...CLEAR.
     MIN TEMP...56-64...EXCEPT 46-54 MID SLOPES.
      24 HR TREND...UP 2-4.
     MAX RH...40-50 PCT RIDGES...55-70 PCT VALLEYS.  
      24 HR TREND...LITTLE CHANGE...EXCEPT DOWN 5-10 PCT MID SLOPES.
     20 FT WIND...DOWNSLOPE 2-5 MPH. 
     RIDGE TOP WIND...NE-E 7-12 MPH.
     CWR...0 PCT. 
     LAL...1.
     HAINES...4 (LOW).

MONDAY...
     WEATHER...BECOMING PARTLY CLOUDY. 
     MAX TEMP...78-84 RIDGES...88-94 VALLEYS.
      24 HR TREND...UP 1-3.
     MIN RH...10-20 PCT.
      24 HR TREND...LITTLE CHANGE. 
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH...OCCASIONAL NE. 
     RIDGE TOP WIND...E-NE 5-10 MPH.
     CWR...0 PCT.
     LAL...1.
     HAINES...4 (LOW).

MONDAY NIGHT...
     WEATHER...PARTLY CLOUDY.
     MIN TEMP...56-66.
      24 HR TREND...LITTLE CHANGE...EXCEPT UP 10 MID SLOPES.
     MAX RH...45-60 PCT.
      24 HR TREND...UP 5 PCT RIDGES...DOWN 10 PCT MID SLOPES.
     20 FT WIND...BECOMING DOWNSLOPE 2-5 MPH...OCCASIONAL NE-E 5-10  
                  MPH IN THE EVENING.
     RIDGE TOP WIND...NW-N 5-10 MPH.
     CWR...0 PCT.
     LAL...1.
     HAINES...4 (LOW).

TUESDAY...
     WEATHER...PARTLY CLOUDY WITH A SLIGHT CHANCE FOR 
               AFTERNOON THUNDERSTORMS...SOME POSSIBLY COULD BE DRY.
     MAX TEMP...78-84 RIDGES...88-94 VALLEYS.
      24 HR TREND...LITTLE CHANGE.
     MIN RH...10-20 PCT.
      24 HR TREND...LITTLE CHANGE.
     20 FT WIND...UPSLOPE/UPVALLEY 3-7 MPH...BECOMING W 7-12 MPH     
                  LATE.
     RIDGE TOP WIND...W 7-12 MPH.
     CWR...LESS THAN 10 PCT.
     LAL...2.
     HAINES...4 (LOW).

EXTENDED FORECAST...WEDNESDAY THROUGH FRIDAY

    WEDNESDAY AND THURSDAY...CHANCE FOR THUNDERSTORMS EACH DAY. LOWS 
      55-65...EXCEPT 45-50 NORMAL COOL MOUNTAIN VALLEYS. HIGHS
      80-90 MOUNTAINS...90S BASIN/VALLEYS.
    FRIDAY...DRY...EXCEPT A SLIGHT CHANCE OF THUNDERSTORMS FIRE ZONE 
      635. LOWS 35-45 MOUNTAINS...50-60 BASIN/VALLEYS. HIGHS IN THE  
      70S MOUNTAINS...85-95 BASIN/VALLEYS.

WIND OUTLOOK:
     WEDNESDAY...NW-N 5-15 MPH.
     THURSDAY...W-NW 5-10 MPH.
     FRIDAY...W-NW 5-15 MPH.


6-10 DAY OUTLOOK...SATURDAY JULY 27 THROUGH WEDNESDAY JULY 31 2002...
     NEAR NORMAL TEMPERATURES AND RAINFALL.

FIRE WEATHER PROBABILITY FORECAST FOR ZONE 632

THIS IS AN EXPERIMENTAL FIVE DAY PROBABILITY FORECAST OF SELECTED 
WEATHER PARAMETERS IN TENS OF PERCENT.  THIS DATA DOES NOT APPLY TO 
AND SHOULD NOT BE USED FOR ANY ZONE...OTHER THAN OREGON ZONE 632.

ISSUED...SUN JUL 21 2002...VALID BEGINNING MON JUL 22 2002.

ZONE        PRECIP      RH       WIND        LIGHTNING
632         00220       87532    00101       38420


1.  CHANCE OF 0.10 OR MORE PRECIP OVER HALF OR MORE OF THE 
    ZONE.
2.  CHANCE OF RH LESS THAN 15% OCCURRING OVER HALF OR MORE OF THE
    ZONE.
3.  CHANCE OF SUSTAINED SURFACE WINDS OF 14 MPH OR GREATER 
    OVER HALF OR MORE OF THE ZONE FOR AT LEAST ONE HOUR.
4.  CHANCE OF RECEIVING ONE OR MORE LIGHTNING STRIKES IN THE ZONE.