606
AUUS46 KPDT 111125
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
425 AM PDT THU JUL 11 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 5-10 MPH.        W 6-12 MPH.
TRANSPORT WINDS               SW 6-12 MPH.        W 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUL 12        POOR.
OUTLOOK FOR SAT JUL 13        GOOD.

VENTILATION INDEX (CATEGORY)  79 (POOR).          343 (FAIR).
OUTLOOK FOR FRI JUL 12        235 (POOR).
OUTLOOK FOR SAT JUL 13        655 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               NW 6-12 MPH.        NW 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JUL 12        POOR.
OUTLOOK FOR SAT JUL 13        FAIR.

VENTILATION INDEX (CATEGORY)  51 (POOR).          301 (FAIR).
OUTLOOK FOR FRI JUL 12        119 (POOR).
OUTLOOK FOR SAT JUL 13        279 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        NW 7-13 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         NW 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUL 12        GOOD.
OUTLOOK FOR SAT JUL 13        GOOD.

VENTILATION INDEX (CATEGORY)  34 (POOR).          308 (FAIR).
OUTLOOK FOR FRI JUL 12        235 (POOR).
OUTLOOK FOR SAT JUL 13        995 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 4-9 MPH.         W 5-10 MPH.
TRANSPORT WINDS               SW 6-12 MPH.        W 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUL 12        POOR.
OUTLOOK FOR SAT JUL 13        GOOD.

VENTILATION INDEX (CATEGORY)  94 (POOR).          321 (FAIR).
OUTLOOK FOR FRI JUL 12        189 (POOR).
OUTLOOK FOR SAT JUL 13        587 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      481 (FAIR)
ELLENSBURG    635 (GOOD)
GOLDENDALE    340 (FAIR)
TRI-CITIES    288 (POOR)
WALLA WALLA   326 (FAIR)
YAKIMA        386 (FAIR)
BEND          288 (POOR)
PRINEVILLE    310 (FAIR)
ENTERPRISE    295 (POOR)
HERMISTON     325 (FAIR)
JOHN DAY      404 (FAIR)
LA GRANDE     352 (FAIR)
MADRAS        255 (POOR)
MEACHAM       254 (POOR)
PENDLETON     347 (FAIR)
REDMOND       283 (POOR)
SENECA        522 (FAIR)
THE DALLES    464 (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:
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.
$$