606
AUUS46 KPDT 141239
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
439 AM PST TUE JAN 14 2025

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 0-3 MPH.         N 2-5 MPH.
TRANSPORT WINDS               NE 0-3 MPH.         N 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 15        POOR.
OUTLOOK FOR THU JAN 16        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          30 (POOR).
OUTLOOK FOR WED JAN 15        36 (POOR).
OUTLOOK FOR THU JAN 16        76 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 1-4 MPH.         SE 1-3 MPH.
TRANSPORT WINDS               NW 1-4 MPH.         E 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 15        POOR.
OUTLOOK FOR THU JAN 16        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          28 (POOR).
OUTLOOK FOR WED JAN 15        27 (POOR).
OUTLOOK FOR THU JAN 16        39 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-5 MPH.         S 2-5 MPH.
TRANSPORT WINDS               SSE 2-5 MPH.        S 5-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 15        FAIR.
OUTLOOK FOR THU JAN 16        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          46 (POOR).
OUTLOOK FOR WED JAN 15        197 (POOR).
OUTLOOK FOR THU JAN 16        165 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-5 MPH.          NW 1-3 MPH.
TRANSPORT WINDS               S 2-5 MPH.          W 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 15        POOR.
OUTLOOK FOR THU JAN 16        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          30 (POOR).
OUTLOOK FOR WED JAN 15        38 (POOR).
OUTLOOK FOR THU JAN 16        101 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       33 (POOR)
ELLENSBURG     25 (POOR)
GOLDENDALE     25 (POOR)
TRI-CITIES     34 (POOR)
WALLA WALLA    28 (POOR)
YAKIMA         25 (POOR)
BEND           28 (POOR)
PRINEVILLE     31 (POOR)
ENTERPRISE     26 (POOR)
HERMISTON      31 (POOR)
JOHN DAY       27 (POOR)
LA GRANDE      42 (POOR)
MADRAS         26 (POOR)
MEACHAM        25 (POOR)
PENDLETON      25 (POOR)
REDMOND        31 (POOR)
SENECA         28 (POOR)
THE DALLES     32 (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.

$$