670
AUUS46 KPDT 161141
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
441 AM PDT TUE JUL 16 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-9 MPH.          NW 4-8 MPH.
TRANSPORT WINDS               S 5-10 MPH.         W 6-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUL 17        FAIR.
OUTLOOK FOR THU JUL 18        FAIR.

VENTILATION INDEX (CATEGORY)  63 (POOR).          266 (POOR).
OUTLOOK FOR WED JUL 17        195 (POOR).
OUTLOOK FOR THU JUL 18        515 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 1-4 MPH.          E 3-6 MPH.
TRANSPORT WINDS               NW 4-7 MPH.         SW 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JUL 17        FAIR.
OUTLOOK FOR THU JUL 18        GOOD.

VENTILATION INDEX (CATEGORY)  39 (POOR).          218 (POOR).
OUTLOOK FOR WED JUL 17        475 (FAIR).
OUTLOOK FOR THU JUL 18        587 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 1-3 MPH.          NW 4-7 MPH.
TRANSPORT WINDS               SW 2-4 MPH.         W 11-14 MPH.
MIXING HEIGHT                 4000 FT MSL.        12000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUL 17        GOOD.
OUTLOOK FOR THU JUL 18        GOOD.

VENTILATION INDEX (CATEGORY)  35 (POOR).          577 (FAIR).
OUTLOOK FOR WED JUL 17        414 (FAIR).
OUTLOOK FOR THU JUL 18        335 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-8 MPH.          NW 5-7 MPH.
TRANSPORT WINDS               S 6-10 MPH.         W 6-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUL 17        FAIR.
OUTLOOK FOR THU JUL 18        FAIR.

VENTILATION INDEX (CATEGORY)  71 (POOR).          321 (FAIR).
OUTLOOK FOR WED JUL 17        212 (POOR).
OUTLOOK FOR THU JUL 18        375 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      297 (POOR)
ELLENSBURG    327 (FAIR)
GOLDENDALE    305 (FAIR)
TRI-CITIES    196 (POOR)
WALLA WALLA   248 (POOR)
YAKIMA        270 (POOR)
BEND         1050 (GOOD)
PRINEVILLE    891 (GOOD)
ENTERPRISE    797 (GOOD)
HERMISTON     238 (POOR)
JOHN DAY     1014 (GOOD)
LA GRANDE     744 (GOOD)
MADRAS        392 (FAIR)
MEACHAM       431 (FAIR)
PENDLETON     306 (FAIR)
REDMOND       414 (FAIR)
SENECA        887 (GOOD)
THE DALLES    161 (POOR)

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.
$$