214
AUUS46 KPDT 051136
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
436 AM PDT SUN MAY 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 10-20 MPH.       SW 15-30 MPH.
TRANSPORT WINDS               SW 15-30 MPH.       SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR MON MAY 6         GOOD.
OUTLOOK FOR TUE MAY 7         GOOD.

VENTILATION INDEX (CATEGORY)  203 (POOR).         444 (FAIR).
OUTLOOK FOR MON MAY 6         1041 (GOOD).
OUTLOOK FOR TUE MAY 7         1050 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 8-15 MPH.         W 15-25 MPH.
TRANSPORT WINDS               NW 15-25 MPH.       NW 22-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR MON MAY 6         GOOD.
OUTLOOK FOR TUE MAY 7         GOOD.

VENTILATION INDEX (CATEGORY)  142 (POOR).         599 (FAIR).
OUTLOOK FOR MON MAY 6         1050 (GOOD).
OUTLOOK FOR TUE MAY 7         1050 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-11 MPH.         SW 8-13 MPH.
TRANSPORT WINDS               SW 10-16 MPH.       W 13-19 MPH.
MIXING HEIGHT                 4000 FT MSL.        5000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON MAY 6         GOOD.
OUTLOOK FOR TUE MAY 7         GOOD.

VENTILATION INDEX (CATEGORY)  165 (POOR).         325 (FAIR).
OUTLOOK FOR MON MAY 6         600 (FAIR).
OUTLOOK FOR TUE MAY 7         1048 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 10-20 MPH.       SW 15-30 MPH.
TRANSPORT WINDS               SW 15-25 MPH.       SW 25-35 MPH.
MIXING HEIGHT                 2000 FT MSL.        3000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR MON MAY 6         GOOD.
OUTLOOK FOR TUE MAY 7         GOOD.

VENTILATION INDEX (CATEGORY)  252 (POOR).         433 (FAIR).
OUTLOOK FOR MON MAY 6         913 (GOOD).
OUTLOOK FOR TUE MAY 7         1047 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      561 (FAIR)
ELLENSBURG    783 (GOOD)
GOLDENDALE    858 (GOOD)
TRI-CITIES    286 (POOR)
WALLA WALLA   353 (FAIR)
YAKIMA        770 (GOOD)
BEND          842 (GOOD)
PRINEVILLE   1049 (GOOD)
ENTERPRISE    362 (FAIR)
HERMISTON     488 (FAIR)
JOHN DAY      331 (FAIR)
LA GRANDE     400 (FAIR)
MADRAS        812 (GOOD)
MEACHAM       336 (FAIR)
PENDLETON     540 (FAIR)
REDMOND      1050 (GOOD)
SENECA        475 (FAIR)
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.
$$