550
AUUS46 KPDT 131147
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
447 AM PDT THU MAR 13 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 17-31 MPH. W 19-28 MPH.
TRANSPORT WINDS SW 14-23 MPH. W 23-32 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR FRI MAR 14 FAIR.
OUTLOOK FOR SAT MAR 15 GOOD.
VENTILATION INDEX (CATEGORY) 157 (POOR). 967 (GOOD).
OUTLOOK FOR FRI MAR 14 524 (FAIR).
OUTLOOK FOR SAT MAR 15 1050 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS SW 11-20 MPH. W 17-24 MPH.
TRANSPORT WINDS SW 12-22 MPH. W 21-22 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR FRI MAR 14 FAIR.
OUTLOOK FOR SAT MAR 15 GOOD.
VENTILATION INDEX (CATEGORY) 99 (POOR). 1025 (GOOD).
OUTLOOK FOR FRI MAR 14 346 (FAIR).
OUTLOOK FOR SAT MAR 15 999 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 12-17 MPH. NW 12-16 MPH.
TRANSPORT WINDS S 10-15 MPH. W 12-17 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI MAR 14 GOOD.
OUTLOOK FOR SAT MAR 15 FAIR.
VENTILATION INDEX (CATEGORY) 105 (POOR). 601 (GOOD).
OUTLOOK FOR FRI MAR 14 751 (GOOD).
OUTLOOK FOR SAT MAR 15 754 (GOOD).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 17-31 MPH. W 18-31 MPH.
TRANSPORT WINDS SW 16-23 MPH. W 22-27 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR FRI MAR 14 FAIR.
OUTLOOK FOR SAT MAR 15 GOOD.
VENTILATION INDEX (CATEGORY) 177 (POOR). 996 (GOOD).
OUTLOOK FOR FRI MAR 14 589 (FAIR).
OUTLOOK FOR SAT MAR 15 1025 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 910 (GOOD)
ELLENSBURG 1050 (GOOD)
GOLDENDALE 1007 (GOOD)
TRI-CITIES 815 (GOOD)
WALLA WALLA 1037 (GOOD)
YAKIMA 1000 (GOOD)
BEND 646 (GOOD)
PRINEVILLE 726 (GOOD)
ENTERPRISE 737 (GOOD)
HERMISTON 1050 (GOOD)
JOHN DAY 474 (FAIR)
LA GRANDE 668 (GOOD)
MADRAS 919 (GOOD)
MEACHAM 706 (GOOD)
PENDLETON 1050 (GOOD)
REDMOND 893 (GOOD)
SENECA 451 (FAIR)
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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