266
AUUS46 KPDT 051158
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
458 AM PDT WED JUN 5 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 5-10 MPH.        W 5-10 MPH.
TRANSPORT WINDS               SW 6-12 MPH.        SW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 6         POOR.
OUTLOOK FOR FRI JUN 7         POOR.

VENTILATION INDEX (CATEGORY)  138 (POOR).         351 (FAIR).
OUTLOOK FOR THU JUN 6         135 (POOR).
OUTLOOK FOR FRI JUN 7         179 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          SE 2-5 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         SW 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JUN 6         POOR.
OUTLOOK FOR FRI JUN 7         POOR.

VENTILATION INDEX (CATEGORY)  69 (POOR).          171 (POOR).
OUTLOOK FOR THU JUN 6         131 (POOR).
OUTLOOK FOR FRI JUN 7         153 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-5 MPH.         N 3-6 MPH.
TRANSPORT WINDS               NW 4-7 MPH.         W 4-7 MPH.
MIXING HEIGHT                 4000 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 6         FAIR.
OUTLOOK FOR FRI JUN 7         FAIR.

VENTILATION INDEX (CATEGORY)  114 (POOR).         233 (POOR).
OUTLOOK FOR THU JUN 6         135 (POOR).
OUTLOOK FOR FRI JUN 7         187 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-10 MPH.        W 4-8 MPH.
TRANSPORT WINDS               SW 6-12 MPH.        SW 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 6         POOR.
OUTLOOK FOR FRI JUN 7         POOR.

VENTILATION INDEX (CATEGORY)  170 (POOR).         320 (FAIR).
OUTLOOK FOR THU JUN 6         133 (POOR).
OUTLOOK FOR FRI JUN 7         154 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      337 (FAIR)
ELLENSBURG    292 (POOR)
GOLDENDALE    300 (POOR)
TRI-CITIES    259 (POOR)
WALLA WALLA   366 (FAIR)
YAKIMA        156 (POOR)
BEND          150 (POOR)
PRINEVILLE    174 (POOR)
ENTERPRISE    325 (FAIR)
HERMISTON     360 (FAIR)
JOHN DAY      239 (POOR)
LA GRANDE     269 (POOR)
MADRAS        142 (POOR)
MEACHAM       240 (POOR)
PENDLETON     268 (POOR)
REDMOND       140 (POOR)
SENECA        321 (FAIR)
THE DALLES    278 (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.
$$