464
AUUS46 KPDT 271140
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
440 AM PDT THU JUN 27 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 17-29 MPH.       W 20-25 MPH.
TRANSPORT WINDS               SW 17-27 MPH.       W 19-24 MPH.
MIXING HEIGHT                 2500 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR FRI JUN 28        POOR.
OUTLOOK FOR SAT JUN 29        FAIR.

VENTILATION INDEX (CATEGORY)  547 (FAIR).         1050 (GOOD).
OUTLOOK FOR FRI JUN 28        182 (POOR).
OUTLOOK FOR SAT JUN 29        342 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 8-15 MPH.         W 14-19 MPH.
TRANSPORT WINDS               W 8-16 MPH.         W 15-20 MPH.
MIXING HEIGHT                 2500 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI JUN 28        POOR.
OUTLOOK FOR SAT JUN 29        POOR.

VENTILATION INDEX (CATEGORY)  376 (FAIR).         1031 (GOOD).
OUTLOOK FOR FRI JUN 28        201 (POOR).
OUTLOOK FOR SAT JUN 29        261 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 8-14 MPH.         NW 12-17 MPH.
TRANSPORT WINDS               W 8-14 MPH.         W 12-18 MPH.
MIXING HEIGHT                 6000 FT MSL.        10000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI JUN 28        GOOD.
OUTLOOK FOR SAT JUN 29        GOOD.

VENTILATION INDEX (CATEGORY)  508 (FAIR).         981 (GOOD).
OUTLOOK FOR FRI JUN 28        208 (POOR).
OUTLOOK FOR SAT JUN 29        262 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 16-28 MPH.       W 17-23 MPH.
TRANSPORT WINDS               SW 17-25 MPH.       W 17-22 MPH.
MIXING HEIGHT                 3000 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR FRI JUN 28        POOR.
OUTLOOK FOR SAT JUN 29        FAIR.

VENTILATION INDEX (CATEGORY)  559 (FAIR).         1038 (GOOD).
OUTLOOK FOR FRI JUN 28        166 (POOR).
OUTLOOK FOR SAT JUN 29        294 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      894 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE   1030 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA  1050 (GOOD)
YAKIMA        929 (GOOD)
BEND          503 (FAIR)
PRINEVILLE    682 (GOOD)
ENTERPRISE   1040 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY      984 (GOOD)
LA GRANDE    1045 (GOOD)
MADRAS        631 (GOOD)
MEACHAM       825 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND       680 (GOOD)
SENECA        867 (GOOD)
THE DALLES   1050 (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.
$$