407
AUUS46 KPDT 101115
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT THU OCT 10 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 2-5 MPH.         N 5-7 MPH.
TRANSPORT WINDS               SW 3-6 MPH.         NE 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI OCT 11        POOR.
OUTLOOK FOR SAT OCT 12        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          191 (POOR).
OUTLOOK FOR FRI OCT 11        74 (POOR).
OUTLOOK FOR SAT OCT 12        155 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-6 MPH.          E 2-5 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         E 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI OCT 11        POOR.
OUTLOOK FOR SAT OCT 12        POOR.

VENTILATION INDEX (CATEGORY)  36 (POOR).          144 (POOR).
OUTLOOK FOR FRI OCT 11        53 (POOR).
OUTLOOK FOR SAT OCT 12        116 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-5 MPH.         NW 4-6 MPH.
TRANSPORT WINDS               NW 4-6 MPH.         N 4-6 MPH.
MIXING HEIGHT                 4000 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI OCT 11        FAIR.
OUTLOOK FOR SAT OCT 12        FAIR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          190 (POOR).
OUTLOOK FOR FRI OCT 11        221 (POOR).
OUTLOOK FOR SAT OCT 12        269 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-5 MPH.          N 3-5 MPH.
TRANSPORT WINDS               SW 3-6 MPH.         N 7-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI OCT 11        POOR.
OUTLOOK FOR SAT OCT 12        POOR.

VENTILATION INDEX (CATEGORY)  30 (POOR).          173 (POOR).
OUTLOOK FOR FRI OCT 11        80 (POOR).
OUTLOOK FOR SAT OCT 12        138 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      321 (FAIR)
ELLENSBURG    245 (POOR)
GOLDENDALE    302 (FAIR)
TRI-CITIES    173 (POOR)
WALLA WALLA   169 (POOR)
YAKIMA        134 (POOR)
BEND          105 (POOR)
PRINEVILLE    113 (POOR)
ENTERPRISE     91 (POOR)
HERMISTON     204 (POOR)
JOHN DAY      178 (POOR)
LA GRANDE     205 (POOR)
MADRAS        176 (POOR)
MEACHAM       134 (POOR)
PENDLETON     206 (POOR)
REDMOND       130 (POOR)
SENECA        351 (FAIR)
THE DALLES    310 (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.
$$