671
AUUS46 KPDT 201249
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
449 AM PST THU FEB 20 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 8-16 MPH. SW 7-12 MPH.
TRANSPORT WINDS SW 9-17 MPH. SW 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY FAIR. POOR.
OUTLOOK FOR FRI FEB 21 POOR.
OUTLOOK FOR SAT FEB 22 POOR.
VENTILATION INDEX (CATEGORY) 44 (POOR). 193 (POOR).
OUTLOOK FOR FRI FEB 21 38 (POOR).
OUTLOOK FOR SAT FEB 22 98 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 2-6 MPH. S 2-6 MPH.
TRANSPORT WINDS W 4-8 MPH. S 3-5 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR FRI FEB 21 POOR.
OUTLOOK FOR SAT FEB 22 POOR.
VENTILATION INDEX (CATEGORY) 26 (POOR). 30 (POOR).
OUTLOOK FOR FRI FEB 21 33 (POOR).
OUTLOOK FOR SAT FEB 22 54 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 4-7 MPH. E 3-5 MPH.
TRANSPORT WINDS W 7-10 MPH. W 5-9 MPH.
MIXING HEIGHT NEAR SURFACE. 5000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI FEB 21 FAIR.
OUTLOOK FOR SAT FEB 22 FAIR.
VENTILATION INDEX (CATEGORY) 51 (POOR). 127 (POOR).
OUTLOOK FOR FRI FEB 21 232 (POOR).
OUTLOOK FOR SAT FEB 22 197 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 8-17 MPH. SW 7-13 MPH.
TRANSPORT WINDS SW 12-18 MPH. SW 11-15 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR FRI FEB 21 POOR.
OUTLOOK FOR SAT FEB 22 FAIR.
VENTILATION INDEX (CATEGORY) 65 (POOR). 233 (POOR).
OUTLOOK FOR FRI FEB 21 68 (POOR).
OUTLOOK FOR SAT FEB 22 105 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 288 (POOR)
ELLENSBURG 179 (POOR)
GOLDENDALE 124 (POOR)
TRI-CITIES 66 (POOR)
WALLA WALLA 210 (POOR)
YAKIMA 25 (POOR)
BEND 74 (POOR)
PRINEVILLE 118 (POOR)
ENTERPRISE 155 (POOR)
HERMISTON 200 (POOR)
JOHN DAY 138 (POOR)
LA GRANDE 192 (POOR)
MADRAS 128 (POOR)
MEACHAM 245 (POOR)
PENDLETON 270 (POOR)
REDMOND 96 (POOR)
SENECA 182 (POOR)
THE DALLES 181 (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.
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