 |
Area Forecast Disscussion
Pendeleton, OR WFO CWA
000 FXUS66 KPDT 172232 AFDPDT AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PENDLETON OR 330 PM PDT THU MAY 17 2012 .SHORT TERM...TONIGHT THROUGH SUNDAY. AN UPPER LEVEL TROUGH OVER WA/OR HAS HAD LITTLE EFFECT OVER OUR FORECAST AREA EXCEPT SPREAD A LAYER OF HIGH LEVEL CLOUDS OVER EASTERN OREGON AND EXTREME SE WASHINGTON AND HAS BROUGHT COOLER TEMPERATURES AND LOCALLY BREEZY WINDS. LIGHT PRECIPITATION HAS BEEN CONFINED TO SOUTH CENTRAL AND SOUTHEAST OREGON THIS AFTERNOON. THERE MAY BE A FEW SPRINKLES OR A BRIEF SHOWER OVER THE OCHOCO AND STRAWBERRY MOUNTAINS THIS EVENING. OTHERWISE CLOUDS AND WINDS WILL DECREASE OVERNIGHT...ALTHOUGH IT WILL REMAIN BREEZY IN A FEW SPOTS. IT WILL BE A CHILLY NIGHT WITH LOWS IN THE MID 30S TO MID 40S OVER THE COLUMBIA BASIN AND SURROUNDING VALLEYS...AND IN THE MID 20S TO MID 30S ELSEWHERE. THE REST OF THE WEEKEND IS LOOKING DRY WITH THE EXCEPTION OF LIGHT RAIN JUST EAST OF THE WASHINGTON CASCADE CREST ON SUNDAY. A DRY WESTERLY FLOW IS EXPECTED THROUGH THE REMAINDER OF THE SHORT TERM...BUT THE SHORTWAVE RIDGE WILL DO LITTLE TO KEEP MID AND HIGH LEVEL CLOUDS FROM SPREADING ACROSS THE AREA. THIS INCLUDES SUNDAY AFTERNOON DURING THE SOLAR ECLIPSE WHEN MOSTLY CLOUDY SKIES ARE FORECAST FOR EASTERN WASHINGTON AND PARTLY TO MOSTLY CLOUDY SKIES ARE FORECAST FOR EASTERN OREGON. IT WILL BE A GREAT WEEKEND FOR OUTDOOR ACTIVITIES AS THERE WILL BE A GRADUAL WARMING TREND. BY SUNDAY...AFTERNOON HIGHS IN THE 70S TO LOWER 80S ARE EXPECTED. WISTER .LONG TERM...SUNDAY NIGHT THROUGH THURSDAY. AN UPPER LEVEL TROUGH WILL BE MOVING ACROSS THE REGION MONDAY AND TUESDAY. THIS WILL RESULT IN SHOWERS AND COOLER TEMPERATURES. ANOTHER SYSTEM WILL BE MOVING THROUGH LATER WEDNESDAY INTO THURSDAY WITH ADDITIONAL SHOWERS AND COOL TEMPERATURES. EURO AND GFS MODELS HAVE SOME DIFFERENCES IN THE STRENGTH OF THE WED/THU SYSTEM SO HAVE BLENDED THE GUIDANCE FOR NOW. THE EURO IS MUCH COLDER AND DEEPER WITH THE TROUGH. OVERALL TEMPERATURES ARE BELOW NORMAL AND POPS ARE ABOVE NORMAL FOR THIS FORECAST PERIOD. 94 && .AVIATION...00Z TAFS. MAINLY CLEAR SKIES ACROSS THE TAF SITES FOR THE NEXT 24 HOURS. SURFACE WINDS 10-20KT. GUSTS TO 30KT AT DLS. 94 && .PRELIMINARY POINT TEMPS/POPS... PDT 40 65 39 70 / 0 0 0 0 ALW 45 66 44 71 / 0 0 0 0 PSC 43 70 42 73 / 0 0 0 0 YKM 38 66 41 70 / 0 0 0 0 HRI 41 69 40 73 / 0 0 0 0 ELN 40 63 41 69 / 0 0 0 0 RDM 28 62 29 69 / 0 0 0 0 LGD 36 61 35 67 / 0 0 0 0 GCD 35 60 36 64 / 0 0 0 0 DLS 42 66 42 73 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... OR...NONE. WA...NONE. && THREAT INDEX FRIDAY : GREEN SATURDAY : GREEN SUNDAY : GREEN GREEN: NONE OR LIMITED NEED FOR WATCHES, WARNINGS, OR ADVISORIES. YELLOW: A FEW WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT. RED: NUMEROUS WATCHES, WARNINGS, OR ADVISORIES POSSIBLE OR IN EFFECT. FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT... WWW.WEATHER.GOV/PENDLETON $$ 85/94/94