852
AUUS46 KPDT 291054
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
354 AM PDT WED MAY 29 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 11-20 MPH.       W 18-25 MPH.
TRANSPORT WINDS               SW 10-19 MPH.       W 21-27 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR THU MAY 30        FAIR.
OUTLOOK FOR FRI MAY 31        FAIR.

VENTILATION INDEX (CATEGORY)  258 (POOR).         1050 (GOOD).
OUTLOOK FOR THU MAY 30        429 (FAIR).
OUTLOOK FOR FRI MAY 31        244 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          W 14-19 MPH.
TRANSPORT WINDS               W 5-10 MPH.         W 20-24 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU MAY 30        FAIR.
OUTLOOK FOR FRI MAY 31        FAIR.

VENTILATION INDEX (CATEGORY)  161 (POOR).         1050 (GOOD).
OUTLOOK FOR THU MAY 30        385 (FAIR).
OUTLOOK FOR FRI MAY 31        248 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-11 MPH.        NW 15-18 MPH.
TRANSPORT WINDS               W 10-13 MPH.        W 18-21 MPH.
MIXING HEIGHT                 4500 FT MSL.        9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU MAY 30        GOOD.
OUTLOOK FOR FRI MAY 31        GOOD.

VENTILATION INDEX (CATEGORY)  311 (FAIR).         964 (GOOD).
OUTLOOK FOR THU MAY 30        429 (FAIR).
OUTLOOK FOR FRI MAY 31        404 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 11-19 MPH.       W 17-24 MPH.
TRANSPORT WINDS               SW 13-18 MPH.       W 22-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR THU MAY 30        FAIR.
OUTLOOK FOR FRI MAY 31        FAIR.

VENTILATION INDEX (CATEGORY)  313 (FAIR).         1050 (GOOD).
OUTLOOK FOR THU MAY 30        442 (FAIR).
OUTLOOK FOR FRI MAY 31        289 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM     1050 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE   1050 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA  1050 (GOOD)
YAKIMA       1050 (GOOD)
BEND          588 (FAIR)
PRINEVILLE    924 (GOOD)
ENTERPRISE   1035 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY      960 (GOOD)
LA GRANDE     968 (GOOD)
MADRAS        889 (GOOD)
MEACHAM       972 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND       929 (GOOD)
SENECA        910 (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.
$$