435 
FNUS76 KPDT 200130
FWSPDT

Spot Forecast for Sandpiper...USFWS
National Weather Service Pendleton OR
630 PM PDT Sat Jul 19 2025

Forecast is based on forecast start time of 0600 PDT on July 20. 
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
   transport wind multiplied by the mixing
   height in 100's of feet. Index categories
   are a generalized indicator only.***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Winds will be from the southwest tomorrow and
tomorrow night, with peak winds between 2PM to 7PM. Winds will 
switch from the southwest to the northwest throughout the day on
Monday. A system approaching the area will increase cloud cover
Sunday and Monday, with a slight chance of showers developing
over the fire area the first half of Monday. RHs will be in the
upper teens to lower 20s Sunday afternoon, but in the mid 30s
Monday afternoon. Overnight recovery will be good. 

.SUNDAY...

Sky/weather.........Mostly cloudy (70-80 percent). 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....85-88. 
Min humidity........19-24 percent. 
Wind (20 ft)........Southwest winds 7 to 12 mph.  
Mixing height.......5300 ft AGL. 
Transport winds.....West 9 to 13 mph. 
Ventilation Index...Poor (120) increasing to fair (450) in the 
                    afternoon. 

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0   
Temp............63  64  66  68  72  74  78  80  82  83  84  85  
RH..............62  62  57  51  44  33  29  24  21  20  22  25  
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  
20 FT wind spd..11  11  11  11  11  11  11  11  12  12  12  12  
20 FT wind gust.        13  13  13  14  14  14  14  14  14  14  

.SUNDAY NIGHT...

Sky/weather.........Cloudy (85-95 percent). Slight chance of 
                    showers early in the morning. 
CWR.................0 percent. 
Chance of lightning.4 percent. 
Min temperature.....65-68. 
Max humidity........58-63 percent. 
Wind (20 ft)........Southwest winds 6 to 12 mph.
Mixing height.......600 ft AGL. 
Transport winds.....Southwest 9 to 13 mph. 
Ventilation Index...Poor (190) decreasing to poor (60) overnight. 

.MONDAY...

Sky/weather.........Mostly cloudy (75-85 percent) then becoming 
                    mostly sunny (25-35 percent). Slight chance of 
                    showers. 
CWR.................0 percent. 
Chance of lightning.9 percent. 
Max temperature.....84-87. 
Min humidity........33-38 percent. 
Wind (20 ft)........Southwest winds 5 to 10 mph shifting to the 
                    west after 10AM, then shifting to the northwest
					around 2PM. 
Mixing height.......6400 ft AGL. 
Transport winds.....West 8 to 9 mph shifting to the northwest 8 to 
                    10 mph late in the afternoon. 
Ventilation Index...Poor (80) increasing to fair (370) in the 
                    afternoon. 

$$
Forecaster...Lawhorn
Requested by...Thomas Boggs
Type of request...WILDFIRE
.TAG 2518288.0/PDT
.DELDT 07/19/25
.FormatterVersion 2.0.0
.EMAIL christian_meyer@fws.gov,thomas_boggs@fws.gov