076
AUUS46 KPDT 171200
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
500 AM PDT TUE SEP 17 2024

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 7-17 MPH.        SW 16-24 MPH.
TRANSPORT WINDS               SW 9-17 MPH.        SW 17-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED SEP 18        FAIR.
OUTLOOK FOR THU SEP 19        FAIR.

VENTILATION INDEX (CATEGORY)  103 (POOR).         553 (FAIR).
OUTLOOK FOR WED SEP 18        488 (FAIR).
OUTLOOK FOR THU SEP 19        388 (FAIR).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 5-11 MPH.         W 9-15 MPH.
TRANSPORT WINDS               NW 5-11 MPH.        W 9-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED SEP 18        POOR.
OUTLOOK FOR THU SEP 19        FAIR.

VENTILATION INDEX (CATEGORY)  65 (POOR).          475 (FAIR).
OUTLOOK FOR WED SEP 18        237 (POOR).
OUTLOOK FOR THU SEP 19        169 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-10 MPH.        NW 9-12 MPH.
TRANSPORT WINDS               NW 5-9 MPH.         NW 10-13 MPH.
MIXING HEIGHT                 4000 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED SEP 18        FAIR.
OUTLOOK FOR THU SEP 19        GOOD.

VENTILATION INDEX (CATEGORY)  94 (POOR).          384 (FAIR).
OUTLOOK FOR WED SEP 18        260 (POOR).
OUTLOOK FOR THU SEP 19        353 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 8-15 MPH.        SW 15-20 MPH.
TRANSPORT WINDS               SW 8-15 MPH.        SW 16-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED SEP 18        FAIR.
OUTLOOK FOR THU SEP 19        FAIR.

VENTILATION INDEX (CATEGORY)  122 (POOR).         514 (FAIR).
OUTLOOK FOR WED SEP 18        463 (FAIR).
OUTLOOK FOR THU SEP 19        324 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      578 (FAIR)
ELLENSBURG    686 (GOOD)
GOLDENDALE    632 (GOOD)
TRI-CITIES    475 (FAIR)
WALLA WALLA   574 (FAIR)
YAKIMA        597 (FAIR)
BEND          506 (FAIR)
PRINEVILLE    654 (GOOD)
ENTERPRISE    303 (FAIR)
HERMISTON     624 (GOOD)
JOHN DAY      306 (FAIR)
LA GRANDE     469 (FAIR)
MADRAS        539 (FAIR)
MEACHAM       335 (FAIR)
PENDLETON     641 (GOOD)
REDMOND       648 (GOOD)
SENECA        451 (FAIR)
THE DALLES    997 (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:
HTTP://WWW.WRH.NOAA.GOV/PDT/GFORECAST/GINDEX.PHP?FCST=MIXHGT,VENTCAT,TRANSWIND,VENTINDX&VT=0,72

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
$$