821
AUUS46 KPDT 011116
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
416 AM PDT TUE OCT 1 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-8 MPH.         SW 7-12 MPH.
TRANSPORT WINDS               S 3-7 MPH.          SW 11-16 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED OCT 2         FAIR.
OUTLOOK FOR THU OCT 3         FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          172 (POOR).
OUTLOOK FOR WED OCT 2         352 (FAIR).
OUTLOOK FOR THU OCT 3         189 (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 4-10 MPH.
TRANSPORT WINDS               W 2-5 MPH.          SW 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED OCT 2         FAIR.
OUTLOOK FOR THU OCT 3         POOR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          122 (POOR).
OUTLOOK FOR WED OCT 2         279 (POOR).
OUTLOOK FOR THU OCT 3         151 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-11 MPH.         S 8-10 MPH.
TRANSPORT WINDS               S 6-10 MPH.         S 18-20 MPH.
MIXING HEIGHT                 4000 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED OCT 2         GOOD.
OUTLOOK FOR THU OCT 3         FAIR.

VENTILATION INDEX (CATEGORY)  118 (POOR).         561 (FAIR).
OUTLOOK FOR WED OCT 2         543 (FAIR).
OUTLOOK FOR THU OCT 3         117 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 5-10 MPH.        W 5-13 MPH.
TRANSPORT WINDS               S 6-12 MPH.         SW 10-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED OCT 2         FAIR.
OUTLOOK FOR THU OCT 3         FAIR.

VENTILATION INDEX (CATEGORY)  45 (POOR).          215 (POOR).
OUTLOOK FOR WED OCT 2         431 (FAIR).
OUTLOOK FOR THU OCT 3         169 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      689 (GOOD)
ELLENSBURG    364 (FAIR)
GOLDENDALE    342 (FAIR)
TRI-CITIES    210 (POOR)
WALLA WALLA   168 (POOR)
YAKIMA         96 (POOR)
BEND          260 (POOR)
PRINEVILLE    241 (POOR)
ENTERPRISE    326 (FAIR)
HERMISTON     158 (POOR)
JOHN DAY      398 (FAIR)
LA GRANDE     475 (FAIR)
MADRAS        237 (POOR)
MEACHAM       290 (POOR)
PENDLETON     139 (POOR)
REDMOND       245 (POOR)
SENECA        317 (FAIR)
THE DALLES    315 (FAIR)

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.
$$