990
AUUS46 KPDT 021225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT THU JUL 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 7-16 MPH. W 8-14 MPH.
TRANSPORT WINDS SW 9-16 MPH. SW 10-15 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR FRI JUL 3 GOOD.
OUTLOOK FOR SAT JUL 4 GOOD.
VENTILATION INDEX (CATEGORY) 165 (POOR). 496 (FAIR).
OUTLOOK FOR FRI JUL 3 619 (GOOD).
OUTLOOK FOR SAT JUL 4 689 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 2-5 MPH. SE 3-7 MPH.
TRANSPORT WINDS W 4-8 MPH. W 5-7 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR FRI JUL 3 FAIR.
OUTLOOK FOR SAT JUL 4 FAIR.
VENTILATION INDEX (CATEGORY) 53 (POOR). 204 (POOR).
OUTLOOK FOR FRI JUL 3 435 (FAIR).
OUTLOOK FOR SAT JUL 4 396 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 0-1 MPH. N 2-4 MPH.
TRANSPORT WINDS NW 4-8 MPH. W 7-9 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI JUL 3 GOOD.
OUTLOOK FOR SAT JUL 4 GOOD.
VENTILATION INDEX (CATEGORY) 56 (POOR). 305 (FAIR).
OUTLOOK FOR FRI JUL 3 555 (FAIR).
OUTLOOK FOR SAT JUL 4 513 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 4-16 MPH. W 7-12 MPH.
TRANSPORT WINDS SW 8-15 MPH. W 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI JUL 3 FAIR.
OUTLOOK FOR SAT JUL 4 FAIR.
VENTILATION INDEX (CATEGORY) 134 (POOR). 372 (FAIR).
OUTLOOK FOR FRI JUL 3 590 (FAIR).
OUTLOOK FOR SAT JUL 4 629 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 429 (FAIR)
ELLENSBURG 676 (GOOD)
GOLDENDALE 534 (FAIR)
TRI-CITIES 422 (FAIR)
WALLA WALLA 398 (FAIR)
YAKIMA 218 (POOR)
BEND 309 (FAIR)
PRINEVILLE 369 (FAIR)
ENTERPRISE 333 (FAIR)
HERMISTON 513 (FAIR)
JOHN DAY 512 (FAIR)
LA GRANDE 338 (FAIR)
MADRAS 276 (POOR)
MEACHAM 299 (POOR)
PENDLETON 413 (FAIR)
REDMOND 381 (FAIR)
SENECA 607 (GOOD)
THE DALLES 585 (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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