579
AUUS46 KPDT 011225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT AUG 1 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 12-24 MPH. W 26-33 MPH.
TRANSPORT WINDS SW 14-25 MPH. W 26-33 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR SUN AUG 2 FAIR.
OUTLOOK FOR MON AUG 3 FAIR.
VENTILATION INDEX (CATEGORY) 232 (POOR). 1046 (GOOD).
OUTLOOK FOR SUN AUG 2 475 (FAIR).
OUTLOOK FOR MON AUG 3 278 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 4-11 MPH. W 21-26 MPH.
TRANSPORT WINDS NW 7-13 MPH. W 22-27 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN AUG 2 FAIR.
OUTLOOK FOR MON AUG 3 POOR.
VENTILATION INDEX (CATEGORY) 128 (POOR). 1050 (GOOD).
OUTLOOK FOR SUN AUG 2 444 (FAIR).
OUTLOOK FOR MON AUG 3 283 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS W 2-6 MPH. NW 17-19 MPH.
TRANSPORT WINDS W 6-11 MPH. W 17-19 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN AUG 2 FAIR.
OUTLOOK FOR MON AUG 3 GOOD.
VENTILATION INDEX (CATEGORY) 96 (POOR). 550 (FAIR).
OUTLOOK FOR SUN AUG 2 456 (FAIR).
OUTLOOK FOR MON AUG 3 436 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 10-22 MPH. W 22-31 MPH.
TRANSPORT WINDS SW 13-22 MPH. W 24-32 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR SUN AUG 2 FAIR.
OUTLOOK FOR MON AUG 3 FAIR.
VENTILATION INDEX (CATEGORY) 232 (POOR). 962 (GOOD).
OUTLOOK FOR SUN AUG 2 509 (FAIR).
OUTLOOK FOR MON AUG 3 312 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 898 (GOOD)
ELLENSBURG 1050 (GOOD)
GOLDENDALE 1050 (GOOD)
TRI-CITIES 1050 (GOOD)
WALLA WALLA 1050 (GOOD)
YAKIMA 1050 (GOOD)
BEND 639 (GOOD)
PRINEVILLE 802 (GOOD)
ENTERPRISE 537 (FAIR)
HERMISTON 1043 (GOOD)
JOHN DAY 867 (GOOD)
LA GRANDE 639 (GOOD)
MADRAS 736 (GOOD)
MEACHAM 562 (FAIR)
PENDLETON 973 (GOOD)
REDMOND 798 (GOOD)
SENECA 1027 (GOOD)
THE DALLES 1050 (GOOD)
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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