693
AUUS46 KPDT 161155
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
455 AM PDT MON SEP 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                 SW 4-8 MPH.         W 6-8 MPH.
TRANSPORT WINDS               SW 4-8 MPH.         W 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 17        GOOD.
OUTLOOK FOR WED SEP 18        FAIR.

VENTILATION INDEX (CATEGORY)  50 (POOR).          162 (POOR).
OUTLOOK FOR TUE SEP 17        558 (FAIR).
OUTLOOK FOR WED SEP 18        504 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-12 MPH.        N 5-9 MPH.
TRANSPORT WINDS               NW 6-12 MPH.        N 6-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 17        GOOD.
OUTLOOK FOR WED SEP 18        FAIR.

VENTILATION INDEX (CATEGORY)  68 (POOR).          420 (FAIR).
OUTLOOK FOR TUE SEP 17        602 (GOOD).
OUTLOOK FOR WED SEP 18        268 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 8-16 MPH.        NW 10-14 MPH.
TRANSPORT WINDS               NW 9-13 MPH.        E 12-15 MPH.
MIXING HEIGHT                 4000 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 17        FAIR.
OUTLOOK FOR WED SEP 18        GOOD.

VENTILATION INDEX (CATEGORY)  114 (POOR).         320 (FAIR).
OUTLOOK FOR TUE SEP 17        357 (FAIR).
OUTLOOK FOR WED SEP 18        336 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-7 MPH.          W 6-8 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         NW 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 17        GOOD.
OUTLOOK FOR WED SEP 18        FAIR.

VENTILATION INDEX (CATEGORY)  53 (POOR).          171 (POOR).
OUTLOOK FOR TUE SEP 17        620 (GOOD).
OUTLOOK FOR WED SEP 18        477 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      409 (FAIR)
ELLENSBURG    523 (FAIR)
GOLDENDALE    184 (POOR)
TRI-CITIES    171 (POOR)
WALLA WALLA   128 (POOR)
YAKIMA        412 (FAIR)
BEND          484 (FAIR)
PRINEVILLE    321 (FAIR)
ENTERPRISE    287 (POOR)
HERMISTON     122 (POOR)
JOHN DAY      266 (POOR)
LA GRANDE     348 (FAIR)
MADRAS        397 (FAIR)
MEACHAM       196 (POOR)
PENDLETON     255 (POOR)
REDMOND       229 (POOR)
SENECA        367 (FAIR)
THE DALLES    350 (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.
$$