550
AUUS46 KPDT 211210
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
410 AM PST FRI FEB 21 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS E 4-9 MPH. N 4-8 MPH.
TRANSPORT WINDS SE 4-9 MPH. NE 4-8 MPH.
MIXING HEIGHT NEAR SURFACE. NEAR SURFACE.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 22 FAIR.
OUTLOOK FOR SUN FEB 23 GOOD.
VENTILATION INDEX (CATEGORY) 25 (POOR). 36 (POOR).
OUTLOOK FOR SAT FEB 22 123 (POOR).
OUTLOOK FOR SUN FEB 23 77 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS N 2-5 MPH. E 2-5 MPH.
TRANSPORT WINDS NE 2-5 MPH. SE 2-5 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 22 POOR.
OUTLOOK FOR SUN FEB 23 FAIR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 36 (POOR).
OUTLOOK FOR SAT FEB 22 74 (POOR).
OUTLOOK FOR SUN FEB 23 87 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 4-8 MPH. S 17-24 MPH.
TRANSPORT WINDS S 4-8 MPH. S 17-20 MPH.
MIXING HEIGHT NEAR SURFACE. 4000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT FEB 22 FAIR.
OUTLOOK FOR SUN FEB 23 FAIR.
VENTILATION INDEX (CATEGORY) 41 (POOR). 162 (POOR).
OUTLOOK FOR SAT FEB 22 209 (POOR).
OUTLOOK FOR SUN FEB 23 126 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 6-12 MPH. S 5-11 MPH.
TRANSPORT WINDS SE 6-12 MPH. S 6-13 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 22 FAIR.
OUTLOOK FOR SUN FEB 23 GOOD.
VENTILATION INDEX (CATEGORY) 30 (POOR). 55 (POOR).
OUTLOOK FOR SAT FEB 22 157 (POOR).
OUTLOOK FOR SUN FEB 23 94 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 114 (POOR)
ELLENSBURG 54 (POOR)
GOLDENDALE 55 (POOR)
TRI-CITIES 30 (POOR)
WALLA WALLA 36 (POOR)
YAKIMA 26 (POOR)
BEND 105 (POOR)
PRINEVILLE 207 (POOR)
ENTERPRISE 37 (POOR)
HERMISTON 36 (POOR)
JOHN DAY 138 (POOR)
LA GRANDE 157 (POOR)
MADRAS 214 (POOR)
MEACHAM 68 (POOR)
PENDLETON 29 (POOR)
REDMOND 179 (POOR)
SENECA 137 (POOR)
THE DALLES 75 (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:
HTTPS://WWW.WEATHER.GOV/PDT/DSSBRIEFING
IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
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