029
AUUS46 KPDT 261238
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
438 AM PST TUE NOV 26 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          SW 5-9 MPH.
TRANSPORT WINDS               NW 2-5 MPH.         W 6-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED NOV 27        FAIR.
OUTLOOK FOR THU NOV 28        POOR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          144 (POOR).
OUTLOOK FOR WED NOV 27        417 (FAIR).
OUTLOOK FOR THU NOV 28        57 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 1-4 MPH.         W 1-4 MPH.
TRANSPORT WINDS               NW 2-4 MPH.         W 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED NOV 27        POOR.
OUTLOOK FOR THU NOV 28        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          91 (POOR).
OUTLOOK FOR WED NOV 27        53 (POOR).
OUTLOOK FOR THU NOV 28        32 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 1-3 MPH.          NW 2-5 MPH.
TRANSPORT WINDS               NW 1-3 MPH.         NW 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED NOV 27        FAIR.
OUTLOOK FOR THU NOV 28        FAIR.

VENTILATION INDEX (CATEGORY)  29 (POOR).          157 (POOR).
OUTLOOK FOR WED NOV 27        184 (POOR).
OUTLOOK FOR THU NOV 28        243 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 1-4 MPH.          SW 4-8 MPH.
TRANSPORT WINDS               W 4-8 MPH.          W 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED NOV 27        FAIR.
OUTLOOK FOR THU NOV 28        POOR.

VENTILATION INDEX (CATEGORY)  41 (POOR).          149 (POOR).
OUTLOOK FOR WED NOV 27        457 (FAIR).
OUTLOOK FOR THU NOV 28        122 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      341 (FAIR)
ELLENSBURG    233 (POOR)
GOLDENDALE    179 (POOR)
TRI-CITIES    127 (POOR)
WALLA WALLA   119 (POOR)
YAKIMA         77 (POOR)
BEND          209 (POOR)
PRINEVILLE    211 (POOR)
ENTERPRISE    164 (POOR)
HERMISTON     147 (POOR)
JOHN DAY      261 (POOR)
LA GRANDE     215 (POOR)
MADRAS        186 (POOR)
MEACHAM       127 (POOR)
PENDLETON     150 (POOR)
REDMOND       217 (POOR)
SENECA        302 (FAIR)
THE DALLES    230 (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.
$$