Daily Dispersion Outlook
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
083 AUUS46 KPDT 181132 DDOPDT DAILY DISPERSION OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 432 AM PDT FRI OCT 18 2024 *** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR *** FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO 7:00 AM AFTERNOON SURFACE WINDS S 5-11 MPH. SW 5-10 MPH. TRANSPORT WINDS S 5-11 MPH. SW 10-15 MPH. MIXING HEIGHT NEAR SURFACE. 4000 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR SAT OCT 19 GOOD. OUTLOOK FOR SUN OCT 20 GOOD. VENTILATION INDEX (CATEGORY) 59 (POOR). 331 (FAIR). OUTLOOK FOR SAT OCT 19 421 (FAIR). OUTLOOK FOR SUN OCT 20 272 (POOR). FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP... SELAH...AND NACHES AREA 7:00 AM AFTERNOON SURFACE WINDS W 2-6 MPH. S 5-10 MPH. TRANSPORT WINDS W 2-6 MPH. SW 10-17 MPH. MIXING HEIGHT NEAR SURFACE. 4000 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR SAT OCT 19 GOOD. OUTLOOK FOR SUN OCT 20 GOOD. VENTILATION INDEX (CATEGORY) 33 (POOR). 258 (POOR). OUTLOOK FOR SAT OCT 19 379 (FAIR). OUTLOOK FOR SUN OCT 20 413 (FAIR). FOR THE GRANDE RONDE RIVER VALLEY 7:00 AM AFTERNOON SURFACE WINDS E 1-3 MPH. N 1-2 MPH. TRANSPORT WINDS S 2-4 MPH. SW 5-9 MPH. MIXING HEIGHT 4000 FT MSL. 6500 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR SAT OCT 19 GOOD. OUTLOOK FOR SUN OCT 20 GOOD. VENTILATION INDEX (CATEGORY) 30 (POOR). 149 (POOR). OUTLOOK FOR SAT OCT 19 405 (FAIR). OUTLOOK FOR SUN OCT 20 517 (FAIR). FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS 7:00 AM AFTERNOON SURFACE WINDS S 6-12 MPH. W 3-8 MPH. TRANSPORT WINDS S 6-12 MPH. SW 9-12 MPH. MIXING HEIGHT NEAR SURFACE. 4500 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR SAT OCT 19 GOOD. OUTLOOK FOR SUN OCT 20 FAIR. VENTILATION INDEX (CATEGORY) 73 (POOR). 270 (POOR). OUTLOOK FOR SAT OCT 19 563 (FAIR). OUTLOOK FOR SUN OCT 20 347 (FAIR). SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES CLE ELUM 202 (POOR) ELLENSBURG 207 (POOR) GOLDENDALE 249 (POOR) TRI-CITIES 441 (FAIR) WALLA WALLA 306 (FAIR) YAKIMA 191 (POOR) BEND 197 (POOR) PRINEVILLE 222 (POOR) ENTERPRISE 93 (POOR) HERMISTON 325 (FAIR) JOHN DAY 210 (POOR) LA GRANDE 156 (POOR) MADRAS 312 (FAIR) MEACHAM 231 (POOR) PENDLETON 276 (POOR) REDMOND 153 (POOR) SENECA 242 (POOR) THE DALLES 136 (POOR) METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY SOME OF THE FACTORS USED IN BURN DECISIONS. BURN DECISIONS ARE OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE. THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS. A VENTILATION INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS: HTTP://WWW.WRH.NOAA.GOV/PDT/GFORECAST/GINDEX.PHP?FCST=MIXHGT,VENTCAT,TRANSWIND,VENTINDX&VT=0,72 IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE NATIONAL WEATHER SERVICE IN PENDLETON. $$