492
AUUS46 KPDT 011135
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
435 AM PDT TUE APR 1 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 7-12 MPH. W 10-12 MPH.
TRANSPORT WINDS SW 8-11 MPH. W 10-12 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED APR 2 GOOD.
OUTLOOK FOR THU APR 3 POOR.
VENTILATION INDEX (CATEGORY) 43 (POOR). 506 (FAIR).
OUTLOOK FOR WED APR 2 777 (GOOD).
OUTLOOK FOR THU APR 3 349 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 3-6 MPH. W 7-12 MPH.
TRANSPORT WINDS W 3-6 MPH. NW 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED APR 2 FAIR.
OUTLOOK FOR THU APR 3 POOR.
VENTILATION INDEX (CATEGORY) 26 (POOR). 382 (FAIR).
OUTLOOK FOR WED APR 2 406 (FAIR).
OUTLOOK FOR THU APR 3 215 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 1-4 MPH. NW 7-11 MPH.
TRANSPORT WINDS SW 3-6 MPH. W 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED APR 2 FAIR.
OUTLOOK FOR THU APR 3 GOOD.
VENTILATION INDEX (CATEGORY) 41 (POOR). 367 (FAIR).
OUTLOOK FOR WED APR 2 492 (FAIR).
OUTLOOK FOR THU APR 3 490 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 5-10 MPH. W 10-15 MPH.
TRANSPORT WINDS SW 10-15 MPH. W 11-16 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED APR 2 GOOD.
OUTLOOK FOR THU APR 3 FAIR.
VENTILATION INDEX (CATEGORY) 80 (POOR). 546 (FAIR).
OUTLOOK FOR WED APR 2 812 (GOOD).
OUTLOOK FOR THU APR 3 367 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 518 (FAIR)
ELLENSBURG 579 (FAIR)
GOLDENDALE 317 (FAIR)
TRI-CITIES 417 (FAIR)
WALLA WALLA 534 (FAIR)
YAKIMA 470 (FAIR)
BEND 369 (FAIR)
PRINEVILLE 356 (FAIR)
ENTERPRISE 407 (FAIR)
HERMISTON 460 (FAIR)
JOHN DAY 183 (POOR)
LA GRANDE 413 (FAIR)
MADRAS 334 (FAIR)
MEACHAM 463 (FAIR)
PENDLETON 552 (FAIR)
REDMOND 361 (FAIR)
SENECA 143 (POOR)
THE DALLES 498 (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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