FNUS76 KPQR 311240 FWSPQR SPOT FORECAST FOR CLACKAMAS COUNTY SAR...CLACKAMAS CTY SHERIFF NATIONAL WEATHER SERVICE PORTLAND OR 540 AM PDT SAT JUL 31 2010 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...A WEAK WEATHER DISTURBANCE IS PRODUCING SOME THUNDERSTORM ACTIVITY EAST OF THE CASCADES THIS MORNING...BUT A STRAY THUNDERSTORM CANNOT BE RULED OUT NEAR THE SEARCH AREA AS THE SYSTEM SLOWLY MOVES ACROSS THE CASCADES TODAY. THIS SYSTEM IS ALSO DEEPENING THE MARINE LAYER...AND SOME LOW CLOUDS AND FOG ARE POSSIBLE IN THE ROARING RIVER DRAINAGE ESPECIALLY BELOW 3000 TO 3500 FT ELEVATION. THESE CLOUDS WILL BE STUBBORN TO BURN OFF TODAY...BUT SHOULD CLEAR OUT BY 1400. ONCE LOW CLOUDS BURN OFF VISIBILITY AND CEILINGS ARE LIKELY TO BE UNRESTRICTED. SIMILAR WEATHER IS EXPECTED SUNDAY...PERHAPS A SLIGHTLY EARLIER BURN OFF -TIME FOR THE LOW CLOUDS. MONDAY THE MARINE LAYER IS EXPECTED TO BE SHALLOWER...SO IT IS LESS LIKELY FOR LOW CLOUDS TO REACH THE SEARCH AREA MONDAY MORNING AND SKIES ARE EXPECTED TO BE MAINLY CLEAR. TEMPERATURES WILL RUN SLIGHTLY BELOW MIDSUMMER NORMALS TODAY AND SUNDAY...WARMING TO NEAR NORMAL MONDAY. .TODAY... SKY/WEATHER.........MORNING LOW CLOUDS AND DRIZZLE EXTENDING UP THE RIVER DRAINAGES...BURNING OFF BY 1400. OTHERWISE PARTLY TO MOSTLY SUNNY WITH A SLIGHT CHANCE OF THUNDERSTORMS. CHANCE OF PCPN......20 PERCENT. CHANCE OF THUNDER...10 PERCENT. MAX TEMPERATURE.....68-74. MIN HUMIDITY........45-55 PERCENT. WIND (20 FT)........LIGHT EARLY...THEN WEST 5 TO 10 MPH. GUSTS TO 20 MPH DEVELOPING DURING THE AFTERNOON OVER THE RIDGES. IF THUNDERSTORMS DEVELOP...WINDS WILL BE GUSTY AND ERRATIC NEAR ANY THUNDERSTORMS. VISIBILITY..........LESS THAN 1 MILE IN LOW CLOUDS. OTHERWISE VISIBILITY UNRESTRICTED. CEILING.............LESS THAN 500 FT IN LOW CLOUDS. OTHERWISE ANY CEILINGS LIKELY 10000 FT OR HIGHER. LOW CLOUD TOPS......3500-4000 FT ABOVE SEA LEVEL. TIME (PDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM TEMP............48 51 57 61 65 70 RH..............91 90 73 55 47 51 20 FT WIND......CALM CALM W 5 W 7 W 9 W 10 MAX GUST..... 10 20 20 .TONIGHT... SKY/WEATHER.........CLEAR TO PARTLY CLOUDY EARLY...THEN LOW CLOUDS FILLING INTO THE RIVER DRAINAGES AFTER MIDNIGHT. CHANCE OF PCPN......5 PERCENT. CHANCE OF THUNDER...NEAR ZERO. MIN TEMPERATURE.....AROUND 45. MAX HUMIDITY........90-100 PERCENT. WIND (20 FT)........WEST 5 TO 10 MPH. EVENING GUSTS TO 20 MPH OVER THE RIDGES. WINDS DIMINISHING AND BECOMING DOWN-DRAINAGE 0-3 MPH BY MIDNIGHT. VISIBILITY..........UNRESTRICTED THROUGH MIDNIGHT. BECOMING LESS THAN 1 MILE IN ANY LOW CLOUDS TOWARD DAYBREAK. CEILING.............UNLIMITED THROUGH MIDNIGHT. 0-500 FT CEILINGS BECOMING INCREASINGLY LIKELY TOWARD DAYBREAK IN THE ROARING RIVER DRAINAGE. LOW CLOUD TOPS......3000-3500 FT ABOVE SEA LEVEL. TIME (PDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM TEMP............66 60 55 48 47 46 RH..............57 66 80 90 90 95 20 FT WIND......W 10 W 7 W 2 SE 2 SE 2 CALM MAX GUST.....20 15 5 5 .SUNDAY... SKY/WEATHER.........AREAS OF MORNING LOW CLOUDS...OTHERWISE MOSTLY SUNNY. MAX TEMPERATURE.....70-76. MIN HUMIDITY........40-50 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING WEST 4-8 MPH WITH AFTERNOON GUSTS TO 15 MPH. VISIBILITY..........GENERALLY UNRESTRICTED...EXCEPT LOCALLY LESS THAN 1 MILE IN THE MORNING IN LOWER PORTIONS OF THE ROARING RIVER DRAINAGE. CEILING.............GENERALLY UNLIMITED...EXCEPT LOCALLY LESS THAN 500 FT IN THE MORNING IN LOWER PORTIONS OF THE ROARING RIVER DRAINAGE. LOW CLOUD TOPS......2500-3000 FT ABOVE SEA LEVEL. .SUNDAY NIGHT... SKY/WEATHER.........MAINLY CLEAR. MIN TEMPERATURE.....45-48. MIN HUMIDITY........80-95 PERCENT. WIND (20 FT)........WEST 4-8 MPH WITH EVENING GUSTS TO 15 MPH... BECOMING CALM OR DOWN-DRAINAGE 0-3 MPH BY MIDNIGHT. VISIBILITY..........UNRESTRICTED. CEILING.............UNLIMITED. .OUTLOOK FOR MONDAY.... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....72-80. MIN HUMIDITY........30-40 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING WEST 4-8 MPH WITH AFTERNOON GUSTS TO 15 MPH. VISIBILITY..........UNRESTRICTED. CEILING.............UNLIMITED. $$ FORECASTER...WEAGLE REQUESTED BY...SCOTT NAPOLI REASON FOR REQUEST...SAR .TAG 20100731.CLACK.01/PQR