Daily Dispersion Outlook
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
617 AUUS46 KPDT 231057 DDOPDT DAILY DISPERSION OUTLOOK NATIONAL WEATHER SERVICE PENDLETON OR 357 AM PDT MON SEP 23 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 5-9 MPH. TRANSPORT WINDS S 7-12 MPH. W 5-9 MPH. MIXING HEIGHT NEAR SURFACE. 5000 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR TUE SEP 24 FAIR. OUTLOOK FOR WED SEP 25 GOOD. VENTILATION INDEX (CATEGORY) 64 (POOR). 263 (POOR). OUTLOOK FOR TUE SEP 24 131 (POOR). OUTLOOK FOR WED SEP 25 501 (FAIR). FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP... SELAH...AND NACHES AREA 7:00 AM AFTERNOON SURFACE WINDS W 2-6 MPH. SE 3-7 MPH. TRANSPORT WINDS W 4-8 MPH. NW 3-7 MPH. MIXING HEIGHT NEAR SURFACE. 5500 FT MSL. DISPERSION CATEGORY POOR. POOR. OUTLOOK FOR TUE SEP 24 FAIR. OUTLOOK FOR WED SEP 25 GOOD. VENTILATION INDEX (CATEGORY) 41 (POOR). 163 (POOR). OUTLOOK FOR TUE SEP 24 186 (POOR). OUTLOOK FOR WED SEP 25 962 (GOOD). FOR THE GRANDE RONDE RIVER VALLEY 7:00 AM AFTERNOON SURFACE WINDS SE 1-4 MPH. NW 4-8 MPH. TRANSPORT WINDS SW 3-7 MPH. NW 5-9 MPH. MIXING HEIGHT 4000 FT MSL. 8000 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR TUE SEP 24 GOOD. OUTLOOK FOR WED SEP 25 GOOD. VENTILATION INDEX (CATEGORY) 46 (POOR). 297 (POOR). OUTLOOK FOR TUE SEP 24 630 (GOOD). OUTLOOK FOR WED SEP 25 890 (GOOD). FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS 7:00 AM AFTERNOON SURFACE WINDS S 5-11 MPH. W 4-9 MPH. TRANSPORT WINDS S 9-13 MPH. W 5-10 MPH. MIXING HEIGHT NEAR SURFACE. 5000 FT MSL. DISPERSION CATEGORY POOR. FAIR. OUTLOOK FOR TUE SEP 24 FAIR. OUTLOOK FOR WED SEP 25 GOOD. VENTILATION INDEX (CATEGORY) 99 (POOR). 285 (POOR). OUTLOOK FOR TUE SEP 24 233 (POOR). OUTLOOK FOR WED SEP 25 783 (GOOD). SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES CLE ELUM 477 (FAIR) ELLENSBURG 494 (FAIR) GOLDENDALE 203 (POOR) TRI-CITIES 313 (FAIR) WALLA WALLA 292 (POOR) YAKIMA 175 (POOR) BEND 237 (POOR) PRINEVILLE 157 (POOR) ENTERPRISE 328 (FAIR) HERMISTON 195 (POOR) JOHN DAY 277 (POOR) LA GRANDE 360 (FAIR) MADRAS 42 (POOR) MEACHAM 224 (POOR) PENDLETON 253 (POOR) REDMOND 182 (POOR) SENECA 249 (POOR) THE DALLES 191 (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. $$