005
AUUS46 KPDT 041225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT TUE AUG 4 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SE 2-6 MPH. N 6-10 MPH.
TRANSPORT WINDS SE 3-6 MPH. NE 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED AUG 5 FAIR.
OUTLOOK FOR THU AUG 6 FAIR.
VENTILATION INDEX (CATEGORY) 29 (POOR). 396 (FAIR).
OUTLOOK FOR WED AUG 5 231 (POOR).
OUTLOOK FOR THU AUG 6 399 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 1-7 MPH. E 3-6 MPH.
TRANSPORT WINDS NW 5-9 MPH. E 4-7 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED AUG 5 FAIR.
OUTLOOK FOR THU AUG 6 FAIR.
VENTILATION INDEX (CATEGORY) 47 (POOR). 345 (FAIR).
OUTLOOK FOR WED AUG 5 275 (POOR).
OUTLOOK FOR THU AUG 6 295 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 3-7 MPH. N 6-11 MPH.
TRANSPORT WINDS N 5-9 MPH. N 6-10 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED AUG 5 GOOD.
OUTLOOK FOR THU AUG 6 GOOD.
VENTILATION INDEX (CATEGORY) 62 (POOR). 413 (FAIR).
OUTLOOK FOR WED AUG 5 313 (FAIR).
OUTLOOK FOR THU AUG 6 475 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 2-5 MPH. N 8-11 MPH.
TRANSPORT WINDS SE 5-9 MPH. N 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED AUG 5 FAIR.
OUTLOOK FOR THU AUG 6 GOOD.
VENTILATION INDEX (CATEGORY) 47 (POOR). 435 (FAIR).
OUTLOOK FOR WED AUG 5 338 (FAIR).
OUTLOOK FOR THU AUG 6 497 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 317 (FAIR)
ELLENSBURG 346 (FAIR)
GOLDENDALE 524 (FAIR)
TRI-CITIES 345 (FAIR)
WALLA WALLA 379 (FAIR)
YAKIMA 290 (POOR)
BEND 214 (POOR)
PRINEVILLE 310 (FAIR)
ENTERPRISE 284 (POOR)
HERMISTON 359 (FAIR)
JOHN DAY 318 (FAIR)
LA GRANDE 398 (FAIR)
MADRAS 373 (FAIR)
MEACHAM 281 (POOR)
PENDLETON 395 (FAIR)
REDMOND 297 (POOR)
SENECA 424 (FAIR)
THE DALLES 553 (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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