273
AUUS46 KPDT 151132
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
432 AM PDT THU AUG 15 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 6-12 MPH.        SW 7-14 MPH.
TRANSPORT WINDS               SW 7-14 MPH.        SW 8-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI AUG 16        FAIR.
OUTLOOK FOR SAT AUG 17        FAIR.

VENTILATION INDEX (CATEGORY)  114 (POOR).         512 (FAIR).
OUTLOOK FOR FRI AUG 16        648 (GOOD).
OUTLOOK FOR SAT AUG 17        405 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          NW 5-10 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI AUG 16        FAIR.
OUTLOOK FOR SAT AUG 17        FAIR.

VENTILATION INDEX (CATEGORY)  47 (POOR).          273 (POOR).
OUTLOOK FOR FRI AUG 16        271 (POOR).
OUTLOOK FOR SAT AUG 17        375 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        NW 5-10 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI AUG 16        GOOD.
OUTLOOK FOR SAT AUG 17        GOOD.

VENTILATION INDEX (CATEGORY)  73 (POOR).          248 (POOR).
OUTLOOK FOR FRI AUG 16        428 (FAIR).
OUTLOOK FOR SAT AUG 17        943 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-10 MPH.        W 6-12 MPH.
TRANSPORT WINDS               SW 6-12 MPH.        W 7-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI AUG 16        FAIR.
OUTLOOK FOR SAT AUG 17        FAIR.

VENTILATION INDEX (CATEGORY)  121 (POOR).         367 (FAIR).
OUTLOOK FOR FRI AUG 16        465 (FAIR).
OUTLOOK FOR SAT AUG 17        496 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      317 (FAIR)
ELLENSBURG    445 (FAIR)
GOLDENDALE    509 (FAIR)
TRI-CITIES    500 (FAIR)
WALLA WALLA   348 (FAIR)
YAKIMA        285 (POOR)
BEND          340 (FAIR)
PRINEVILLE    353 (FAIR)
ENTERPRISE     71 (POOR)
HERMISTON     627 (GOOD)
JOHN DAY      270 (POOR)
LA GRANDE     287 (POOR)
MADRAS        322 (FAIR)
MEACHAM       271 (POOR)
PENDLETON     518 (FAIR)
REDMOND       385 (FAIR)
SENECA        280 (POOR)
THE DALLES    704 (GOOD)

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.
$$