456
AUUS46 KPDT 221238
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
436 AM PST FRI NOV 22 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 5-10 MPH.        W 5-10 MPH.
TRANSPORT WINDS               NE 6-10 MPH.        W 8-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT NOV 23        FAIR.
OUTLOOK FOR SUN NOV 24        POOR.

VENTILATION INDEX (CATEGORY)  32 (POOR).          95 (POOR).
OUTLOOK FOR SAT NOV 23        355 (FAIR).
OUTLOOK FOR SUN NOV 24        211 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         SW 2-5 MPH.
TRANSPORT WINDS               NW 5-9 MPH.         NW 5-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT NOV 23        FAIR.
OUTLOOK FOR SUN NOV 24        POOR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          52 (POOR).
OUTLOOK FOR SAT NOV 23        274 (POOR).
OUTLOOK FOR SUN NOV 24        90 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 15-25 MPH.        S 12-25 MPH.
TRANSPORT WINDS               S 20-30 MPH.        S 20-30 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SAT NOV 23        FAIR.
OUTLOOK FOR SUN NOV 24        GOOD.

VENTILATION INDEX (CATEGORY)  196 (POOR).         436 (FAIR).
OUTLOOK FOR SAT NOV 23        398 (FAIR).
OUTLOOK FOR SUN NOV 24        349 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 6-10 MPH.        S 8-15 MPH.
TRANSPORT WINDS               S 8-15 MPH.         S 10-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT NOV 23        FAIR.
OUTLOOK FOR SUN NOV 24        FAIR.

VENTILATION INDEX (CATEGORY)  93 (POOR).          264 (POOR).
OUTLOOK FOR SAT NOV 23        337 (FAIR).
OUTLOOK FOR SUN NOV 24        272 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       93 (POOR)
ELLENSBURG     59 (POOR)
GOLDENDALE     65 (POOR)
TRI-CITIES     70 (POOR)
WALLA WALLA   260 (POOR)
YAKIMA         40 (POOR)
BEND          749 (GOOD)
PRINEVILLE    731 (GOOD)
ENTERPRISE    211 (POOR)
HERMISTON      44 (POOR)
JOHN DAY      330 (FAIR)
LA GRANDE     426 (FAIR)
MADRAS        579 (FAIR)
MEACHAM       142 (POOR)
PENDLETON     161 (POOR)
REDMOND       865 (GOOD)
SENECA        345 (FAIR)
THE DALLES     63 (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.
$$