222
AUUS46 KPDT 081301
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
501 AM PST WED JAN 8 2025

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-5 MPH.         NW 3-6 MPH.
TRANSPORT WINDS               SE 3-6 MPH.         W 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 9         POOR.
OUTLOOK FOR FRI JAN 10        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          32 (POOR).
OUTLOOK FOR THU JAN 9         43 (POOR).
OUTLOOK FOR FRI JAN 10        88 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 1-3 MPH.         NE 1-4 MPH.
TRANSPORT WINDS               SW 2-5 MPH.         N 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 9         POOR.
OUTLOOK FOR FRI JAN 10        POOR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          28 (POOR).
OUTLOOK FOR THU JAN 9         31 (POOR).
OUTLOOK FOR FRI JAN 10        62 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 8-13 MPH.         S 3-6 MPH.
TRANSPORT WINDS               S 10-15 MPH.        S 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 9         POOR.
OUTLOOK FOR FRI JAN 10        FAIR.

VENTILATION INDEX (CATEGORY)  94 (POOR).          93 (POOR).
OUTLOOK FOR THU JAN 9         32 (POOR).
OUTLOOK FOR FRI JAN 10        224 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-7 MPH.          W 2-5 MPH.
TRANSPORT WINDS               S 5-10 MPH.         SW 4-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 9         POOR.
OUTLOOK FOR FRI JAN 10        FAIR.

VENTILATION INDEX (CATEGORY)  34 (POOR).          43 (POOR).
OUTLOOK FOR THU JAN 9         31 (POOR).
OUTLOOK FOR FRI JAN 10        95 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      101 (POOR)
ELLENSBURG     43 (POOR)
GOLDENDALE     33 (POOR)
TRI-CITIES     29 (POOR)
WALLA WALLA    37 (POOR)
YAKIMA         25 (POOR)
BEND           32 (POOR)
PRINEVILLE     27 (POOR)
ENTERPRISE     62 (POOR)
HERMISTON      31 (POOR)
JOHN DAY       25 (POOR)
LA GRANDE      64 (POOR)
MADRAS         35 (POOR)
MEACHAM        37 (POOR)
PENDLETON      28 (POOR)
REDMOND        28 (POOR)
SENECA         36 (POOR)
THE DALLES     34 (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.
$$