411
AUUS46 KPDT 231250
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
450 AM PST SAT NOV 23 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 4-6 MPH.         SW 6-12 MPH.
TRANSPORT WINDS               SW 5-7 MPH.         W 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN NOV 24        POOR.
OUTLOOK FOR MON NOV 25        POOR.

VENTILATION INDEX (CATEGORY)  41 (POOR).          369 (FAIR).
OUTLOOK FOR SUN NOV 24        124 (POOR).
OUTLOOK FOR MON NOV 25        120 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 1-4 MPH.          SW 4-8 MPH.
TRANSPORT WINDS               W 1-4 MPH.          W 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SUN NOV 24        POOR.
OUTLOOK FOR MON NOV 25        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          136 (POOR).
OUTLOOK FOR SUN NOV 24        64 (POOR).
OUTLOOK FOR MON NOV 25        58 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          S 3-6 MPH.
TRANSPORT WINDS               W 4-5 MPH.          W 7-11 MPH.
MIXING HEIGHT                 4000 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN NOV 24        GOOD.
OUTLOOK FOR MON NOV 25        GOOD.

VENTILATION INDEX (CATEGORY)  52 (POOR).          254 (POOR).
OUTLOOK FOR SUN NOV 24        309 (FAIR).
OUTLOOK FOR MON NOV 25        383 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 4-7 MPH.         SW 6-12 MPH.
TRANSPORT WINDS               SW 4-8 MPH.         SW 12-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN NOV 24        FAIR.
OUTLOOK FOR MON NOV 25        FAIR.

VENTILATION INDEX (CATEGORY)  70 (POOR).          385 (FAIR).
OUTLOOK FOR SUN NOV 24        223 (POOR).
OUTLOOK FOR MON NOV 25        283 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      202 (POOR)
ELLENSBURG    110 (POOR)
GOLDENDALE    250 (POOR)
TRI-CITIES    295 (POOR)
WALLA WALLA   341 (FAIR)
YAKIMA         60 (POOR)
BEND          467 (FAIR)
PRINEVILLE    373 (FAIR)
ENTERPRISE    294 (POOR)
HERMISTON     350 (FAIR)
JOHN DAY      374 (FAIR)
LA GRANDE     320 (FAIR)
MADRAS        320 (FAIR)
MEACHAM       330 (FAIR)
PENDLETON     425 (FAIR)
REDMOND       323 (FAIR)
SENECA        477 (FAIR)
THE DALLES    142 (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.
$$