907
AUUS46 KPDT 091310
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
510 AM PST THU JAN 9 2025

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 2-5 MPH.          N 3-6 MPH.
TRANSPORT WINDS               N 2-5 MPH.          NE 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 10        GOOD.
OUTLOOK FOR SAT JAN 11        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          54 (POOR).
OUTLOOK FOR FRI JAN 10        97 (POOR).
OUTLOOK FOR SAT JAN 11        252 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 1-4 MPH.          E 2-5 MPH.
TRANSPORT WINDS               E 2-5 MPH.          SE 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 10        FAIR.
OUTLOOK FOR SAT JAN 11        POOR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          38 (POOR).
OUTLOOK FOR FRI JAN 10        70 (POOR).
OUTLOOK FOR SAT JAN 11        131 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 1-4 MPH.          S 2-5 MPH.
TRANSPORT WINDS               N 3-6 MPH.          S 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 10        FAIR.
OUTLOOK FOR SAT JAN 11        FAIR.

VENTILATION INDEX (CATEGORY)  33 (POOR).          32 (POOR).
OUTLOOK FOR FRI JAN 10        203 (POOR).
OUTLOOK FOR SAT JAN 11        324 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 1-4 MPH.         N 2-5 MPH.
TRANSPORT WINDS               NE 2-5 MPH.         NE 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JAN 10        GOOD.
OUTLOOK FOR SAT JAN 11        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          34 (POOR).
OUTLOOK FOR FRI JAN 10        104 (POOR).
OUTLOOK FOR SAT JAN 11        319 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      100 (POOR)
ELLENSBURG     47 (POOR)
GOLDENDALE    100 (POOR)
TRI-CITIES     61 (POOR)
WALLA WALLA    29 (POOR)
YAKIMA         30 (POOR)
BEND           35 (POOR)
PRINEVILLE     62 (POOR)
ENTERPRISE     29 (POOR)
HERMISTON      65 (POOR)
JOHN DAY       41 (POOR)
LA GRANDE      34 (POOR)
MADRAS         26 (POOR)
MEACHAM        31 (POOR)
PENDLETON      52 (POOR)
REDMOND        58 (POOR)
SENECA         30 (POOR)
THE DALLES    163 (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.
$$