019
AUUS46 KPDT 261105
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
405 AM PDT SAT APR 26 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 5-10 MPH. NW 6-12 MPH.
TRANSPORT WINDS SW 7-13 MPH. NW 7-12 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN APR 27 FAIR.
OUTLOOK FOR MON APR 28 FAIR.
VENTILATION INDEX (CATEGORY) 66 (POOR). 364 (FAIR).
OUTLOOK FOR SUN APR 27 496 (FAIR).
OUTLOOK FOR MON APR 28 503 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 5-9 MPH. NW 7-14 MPH.
TRANSPORT WINDS NW 7-13 MPH. N 8-12 MPH.
MIXING HEIGHT NEAR SURFACE. 11000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN APR 27 GOOD.
OUTLOOK FOR MON APR 28 FAIR.
VENTILATION INDEX (CATEGORY) 53 (POOR). 678 (GOOD).
OUTLOOK FOR SUN APR 27 586 (FAIR).
OUTLOOK FOR MON APR 28 255 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS W 2-4 MPH. N 7-13 MPH.
TRANSPORT WINDS S 4-6 MPH. N 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN APR 27 GOOD.
OUTLOOK FOR MON APR 28 GOOD.
VENTILATION INDEX (CATEGORY) 47 (POOR). 205 (POOR).
OUTLOOK FOR SUN APR 27 496 (FAIR).
OUTLOOK FOR MON APR 28 461 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 4-8 MPH. NW 6-12 MPH.
TRANSPORT WINDS SW 7-11 MPH. W 8-10 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN APR 27 FAIR.
OUTLOOK FOR MON APR 28 FAIR.
VENTILATION INDEX (CATEGORY) 73 (POOR). 334 (FAIR).
OUTLOOK FOR SUN APR 27 436 (FAIR).
OUTLOOK FOR MON APR 28 428 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 657 (GOOD)
ELLENSBURG 907 (GOOD)
GOLDENDALE 347 (FAIR)
TRI-CITIES 340 (FAIR)
WALLA WALLA 307 (FAIR)
YAKIMA 916 (GOOD)
BEND 618 (GOOD)
PRINEVILLE 596 (FAIR)
ENTERPRISE 166 (POOR)
HERMISTON 385 (FAIR)
JOHN DAY 416 (FAIR)
LA GRANDE 333 (FAIR)
MADRAS 468 (FAIR)
MEACHAM 282 (POOR)
PENDLETON 394 (FAIR)
REDMOND 560 (FAIR)
SENECA 417 (FAIR)
THE DALLES 467 (FAIR)
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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