396
AUUS46 KPDT 201137
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
437 AM PDT SAT JUL 20 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-6 MPH.          N 5-9 MPH.
TRANSPORT WINDS               SW 5-9 MPH.         N 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN JUL 21        FAIR.
OUTLOOK FOR MON JUL 22        FAIR.

VENTILATION INDEX (CATEGORY)  35 (POOR).          418 (FAIR).
OUTLOOK FOR SUN JUL 21        476 (FAIR).
OUTLOOK FOR MON JUL 22        512 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 1-4 MPH.          E 3-6 MPH.
TRANSPORT WINDS               NW 4-7 MPH.         SE 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN JUL 21        POOR.
OUTLOOK FOR MON JUL 22        FAIR.

VENTILATION INDEX (CATEGORY)  34 (POOR).          364 (FAIR).
OUTLOOK FOR SUN JUL 21        603 (GOOD).
OUTLOOK FOR MON JUL 22        240 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 1-3 MPH.         N 5-9 MPH.
TRANSPORT WINDS               N 2-4 MPH.          NW 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       12500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN JUL 21        GOOD.
OUTLOOK FOR MON JUL 22        GOOD.

VENTILATION INDEX (CATEGORY)  37 (POOR).          665 (GOOD).
OUTLOOK FOR SUN JUL 21        389 (FAIR).
OUTLOOK FOR MON JUL 22        340 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-7 MPH.          N 5-9 MPH.
TRANSPORT WINDS               S 5-9 MPH.          NE 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN JUL 21        FAIR.
OUTLOOK FOR MON JUL 22        FAIR.

VENTILATION INDEX (CATEGORY)  32 (POOR).          414 (FAIR).
OUTLOOK FOR SUN JUL 21        418 (FAIR).
OUTLOOK FOR MON JUL 22        355 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      428 (FAIR)
ELLENSBURG    458 (FAIR)
GOLDENDALE    400 (FAIR)
TRI-CITIES    341 (FAIR)
WALLA WALLA   367 (FAIR)
YAKIMA        351 (FAIR)
BEND          429 (FAIR)
PRINEVILLE    228 (POOR)
ENTERPRISE    550 (FAIR)
HERMISTON     429 (FAIR)
JOHN DAY      419 (FAIR)
LA GRANDE     710 (GOOD)
MADRAS        564 (FAIR)
MEACHAM       405 (FAIR)
PENDLETON     484 (FAIR)
REDMOND       453 (FAIR)
SENECA        320 (FAIR)
THE DALLES    353 (FAIR)

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.
$$