437
AUUS46 KPDT 211104
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
404 AM PDT SUN JUL 21 2024

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-6 MPH.         NW 4-9 MPH.
TRANSPORT WINDS               S 2-6 MPH.          N 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON JUL 22        FAIR.
OUTLOOK FOR TUE JUL 23        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          418 (FAIR).
OUTLOOK FOR MON JUL 22        667 (GOOD).
OUTLOOK FOR TUE JUL 23        390 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-8 MPH.         NW 4-8 MPH.
TRANSPORT WINDS               NW 5-9 MPH.         NW 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON JUL 22        FAIR.
OUTLOOK FOR TUE JUL 23        POOR.

VENTILATION INDEX (CATEGORY)  40 (POOR).          226 (POOR).
OUTLOOK FOR MON JUL 22        399 (FAIR).
OUTLOOK FOR TUE JUL 23        231 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 1-3 MPH.         N 5-8 MPH.
TRANSPORT WINDS               NE 1-5 MPH.         N 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       12500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON JUL 22        GOOD.
OUTLOOK FOR TUE JUL 23        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          288 (POOR).
OUTLOOK FOR MON JUL 22        495 (FAIR).
OUTLOOK FOR TUE JUL 23        320 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-6 MPH.         N 5-9 MPH.
TRANSPORT WINDS               SE 5-7 MPH.         N 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON JUL 22        FAIR.
OUTLOOK FOR TUE JUL 23        FAIR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          447 (FAIR).
OUTLOOK FOR MON JUL 22        416 (FAIR).
OUTLOOK FOR TUE JUL 23        325 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      180 (POOR)
ELLENSBURG     39 (POOR)
GOLDENDALE    385 (FAIR)
TRI-CITIES    412 (FAIR)
WALLA WALLA   437 (FAIR)
YAKIMA         58 (POOR)
BEND          449 (FAIR)
PRINEVILLE    347 (FAIR)
ENTERPRISE    753 (GOOD)
HERMISTON     374 (FAIR)
JOHN DAY      530 (FAIR)
LA GRANDE     601 (GOOD)
MADRAS        432 (FAIR)
MEACHAM       321 (FAIR)
PENDLETON     480 (FAIR)
REDMOND       487 (FAIR)
SENECA       1050 (GOOD)
THE DALLES    798 (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.
$$