993
AUUS46 KPDT 121225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT THU JUN 12 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 12-24 MPH. W 14-19 MPH.
TRANSPORT WINDS SW 14-24 MPH. W 14-19 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR FRI JUN 13 GOOD.
OUTLOOK FOR SAT JUN 14 FAIR.
VENTILATION INDEX (CATEGORY) 210 (POOR). 766 (GOOD).
OUTLOOK FOR FRI JUN 13 558 (FAIR).
OUTLOOK FOR SAT JUN 14 381 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 5-10 MPH. W 10-14 MPH.
TRANSPORT WINDS W 6-11 MPH. W 12-16 MPH.
MIXING HEIGHT NEAR SURFACE. 10500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI JUN 13 FAIR.
OUTLOOK FOR SAT JUN 14 POOR.
VENTILATION INDEX (CATEGORY) 77 (POOR). 789 (GOOD).
OUTLOOK FOR FRI JUN 13 402 (FAIR).
OUTLOOK FOR SAT JUN 14 223 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 2-4 MPH. NW 10-12 MPH.
TRANSPORT WINDS W 6-8 MPH. W 10-12 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI JUN 13 GOOD.
OUTLOOK FOR SAT JUN 14 GOOD.
VENTILATION INDEX (CATEGORY) 95 (POOR). 531 (FAIR).
OUTLOOK FOR FRI JUN 13 392 (FAIR).
OUTLOOK FOR SAT JUN 14 406 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 9-24 MPH. W 13-18 MPH.
TRANSPORT WINDS SW 13-23 MPH. W 13-18 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR FRI JUN 13 FAIR.
OUTLOOK FOR SAT JUN 14 FAIR.
VENTILATION INDEX (CATEGORY) 234 (POOR). 669 (GOOD).
OUTLOOK FOR FRI JUN 13 488 (FAIR).
OUTLOOK FOR SAT JUN 14 322 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 811 (GOOD)
ELLENSBURG 1015 (GOOD)
GOLDENDALE 801 (GOOD)
TRI-CITIES 673 (GOOD)
WALLA WALLA 611 (GOOD)
YAKIMA 996 (GOOD)
BEND 605 (GOOD)
PRINEVILLE 552 (FAIR)
ENTERPRISE 457 (FAIR)
HERMISTON 754 (GOOD)
JOHN DAY 603 (GOOD)
LA GRANDE 618 (GOOD)
MADRAS 555 (FAIR)
MEACHAM 502 (FAIR)
PENDLETON 779 (GOOD)
REDMOND 563 (FAIR)
SENECA 692 (GOOD)
THE DALLES 790 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page