536
AUUS46 KPDT 021225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SUN AUG 2 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 5-13 MPH. W 7-13 MPH.
TRANSPORT WINDS SW 7-13 MPH. W 9-13 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON AUG 3 FAIR.
OUTLOOK FOR TUE AUG 4 FAIR.
VENTILATION INDEX (CATEGORY) 142 (POOR). 470 (FAIR).
OUTLOOK FOR MON AUG 3 369 (FAIR).
OUTLOOK FOR TUE AUG 4 388 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 3-7 MPH. NW 4-8 MPH.
TRANSPORT WINDS NW 4-8 MPH. NW 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON AUG 3 POOR.
OUTLOOK FOR TUE AUG 4 FAIR.
VENTILATION INDEX (CATEGORY) 87 (POOR). 436 (FAIR).
OUTLOOK FOR MON AUG 3 317 (FAIR).
OUTLOOK FOR TUE AUG 4 387 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 3-7 MPH. NW 10-13 MPH.
TRANSPORT WINDS NW 4-8 MPH. NW 11-14 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON AUG 3 GOOD.
OUTLOOK FOR TUE AUG 4 GOOD.
VENTILATION INDEX (CATEGORY) 88 (POOR). 463 (FAIR).
OUTLOOK FOR MON AUG 3 472 (FAIR).
OUTLOOK FOR TUE AUG 4 319 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 5-13 MPH. W 9-12 MPH.
TRANSPORT WINDS SW 7-12 MPH. W 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON AUG 3 FAIR.
OUTLOOK FOR TUE AUG 4 FAIR.
VENTILATION INDEX (CATEGORY) 159 (POOR). 500 (FAIR).
OUTLOOK FOR MON AUG 3 368 (FAIR).
OUTLOOK FOR TUE AUG 4 392 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 797 (GOOD)
ELLENSBURG 1050 (GOOD)
GOLDENDALE 750 (GOOD)
TRI-CITIES 458 (FAIR)
WALLA WALLA 442 (FAIR)
YAKIMA 521 (FAIR)
BEND 431 (FAIR)
PRINEVILLE 471 (FAIR)
ENTERPRISE 471 (FAIR)
HERMISTON 418 (FAIR)
JOHN DAY 522 (FAIR)
LA GRANDE 492 (FAIR)
MADRAS 461 (FAIR)
MEACHAM 437 (FAIR)
PENDLETON 530 (FAIR)
REDMOND 477 (FAIR)
SENECA 519 (FAIR)
THE DALLES 841 (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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