212
AUUS46 KPDT 031225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT FRI JUL 3 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 7-12 MPH.
TRANSPORT WINDS SW 7-13 MPH. W 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 4 GOOD.
OUTLOOK FOR SUN JUL 5 FAIR.
VENTILATION INDEX (CATEGORY) 146 (POOR). 540 (FAIR).
OUTLOOK FOR SAT JUL 4 766 (GOOD).
OUTLOOK FOR SUN JUL 5 318 (FAIR).
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 NW 4-8 MPH. SW 7-9 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 4 FAIR.
OUTLOOK FOR SUN JUL 5 POOR.
VENTILATION INDEX (CATEGORY) 72 (POOR). 382 (FAIR).
OUTLOOK FOR SAT JUL 4 558 (FAIR).
OUTLOOK FOR SUN JUL 5 232 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS E 0-2 MPH. N 3-6 MPH.
TRANSPORT WINDS W 4-8 MPH. W 8-10 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SAT JUL 4 GOOD.
OUTLOOK FOR SUN JUL 5 FAIR.
VENTILATION INDEX (CATEGORY) 63 (POOR). 441 (FAIR).
OUTLOOK FOR SAT JUL 4 716 (GOOD).
OUTLOOK FOR SUN JUL 5 396 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 5-14 MPH. W 6-11 MPH.
TRANSPORT WINDS SW 8-14 MPH. W 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 4 GOOD.
OUTLOOK FOR SUN JUL 5 FAIR.
VENTILATION INDEX (CATEGORY) 154 (POOR). 456 (FAIR).
OUTLOOK FOR SAT JUL 4 723 (GOOD).
OUTLOOK FOR SUN JUL 5 321 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 433 (FAIR)
ELLENSBURG 597 (FAIR)
GOLDENDALE 630 (GOOD)
TRI-CITIES 517 (FAIR)
WALLA WALLA 463 (FAIR)
YAKIMA 384 (FAIR)
BEND 412 (FAIR)
PRINEVILLE 359 (FAIR)
ENTERPRISE 435 (FAIR)
HERMISTON 547 (FAIR)
JOHN DAY 612 (GOOD)
LA GRANDE 507 (FAIR)
MADRAS 310 (FAIR)
MEACHAM 383 (FAIR)
PENDLETON 488 (FAIR)
REDMOND 361 (FAIR)
SENECA 746 (GOOD)
THE DALLES 580 (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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