250
AUUS46 KPDT 061132
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
432 AM PDT SUN OCT 6 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-6 MPH.          W 3-5 MPH.
TRANSPORT WINDS               SW 3-6 MPH.         SW 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON OCT 7         POOR.
OUTLOOK FOR TUE OCT 8         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          79 (POOR).
OUTLOOK FOR MON OCT 7         45 (POOR).
OUTLOOK FOR TUE OCT 8         299 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-4 MPH.          SE 3-6 MPH.
TRANSPORT WINDS               NW 3-6 MPH.         S 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON OCT 7         POOR.
OUTLOOK FOR TUE OCT 8         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          108 (POOR).
OUTLOOK FOR MON OCT 7         86 (POOR).
OUTLOOK FOR TUE OCT 8         258 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-9 MPH.          S 4-8 MPH.
TRANSPORT WINDS               S 5-10 MPH.         SW 7-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON OCT 7         GOOD.
OUTLOOK FOR TUE OCT 8         FAIR.

VENTILATION INDEX (CATEGORY)  50 (POOR).          546 (FAIR).
OUTLOOK FOR MON OCT 7         466 (FAIR).
OUTLOOK FOR TUE OCT 8         270 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-8 MPH.          SW 3-6 MPH.
TRANSPORT WINDS               S 5-8 MPH.          SW 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON OCT 7         POOR.
OUTLOOK FOR TUE OCT 8         FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          133 (POOR).
OUTLOOK FOR MON OCT 7         110 (POOR).
OUTLOOK FOR TUE OCT 8         293 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      126 (POOR)
ELLENSBURG    136 (POOR)
GOLDENDALE    156 (POOR)
TRI-CITIES     70 (POOR)
WALLA WALLA    91 (POOR)
YAKIMA         99 (POOR)
BEND          966 (GOOD)
PRINEVILLE    782 (GOOD)
ENTERPRISE    635 (GOOD)
HERMISTON      59 (POOR)
JOHN DAY      810 (GOOD)
LA GRANDE     547 (FAIR)
MADRAS        521 (FAIR)
MEACHAM       273 (POOR)
PENDLETON      66 (POOR)
REDMOND       698 (GOOD)
SENECA        840 (GOOD)
THE DALLES     78 (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.
$$