398
AUUS46 KPDT 171244
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
544 AM PDT WED JUL 17 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 2-6 MPH.          NE 7-10 MPH.
TRANSPORT WINDS               S 4-8 MPH.          E 15-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 18        FAIR.
OUTLOOK FOR FRI JUL 19        FAIR.

VENTILATION INDEX (CATEGORY)  34 (POOR).          522 (FAIR).
OUTLOOK FOR THU JUL 18        478 (FAIR).
OUTLOOK FOR FRI JUL 19        436 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 5-9 MPH.          E 5-7 MPH.
TRANSPORT WINDS               W 5-9 MPH.          SE 10-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 18        GOOD.
OUTLOOK FOR FRI JUL 19        FAIR.

VENTILATION INDEX (CATEGORY)  30 (POOR).          574 (FAIR).
OUTLOOK FOR THU JUL 18        586 (FAIR).
OUTLOOK FOR FRI JUL 19        366 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 1-3 MPH.          E 7-9 MPH.
TRANSPORT WINDS               NE 3-6 MPH.         SE 14-16 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 18        GOOD.
OUTLOOK FOR FRI JUL 19        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          433 (FAIR).
OUTLOOK FOR THU JUL 18        407 (FAIR).
OUTLOOK FOR FRI JUL 19        410 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 5-6 MPH.         E 7-9 MPH.
TRANSPORT WINDS               SE 7-10 MPH.        SE 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 18        FAIR.
OUTLOOK FOR FRI JUL 19        FAIR.

VENTILATION INDEX (CATEGORY)  39 (POOR).          563 (FAIR).
OUTLOOK FOR THU JUL 18        380 (FAIR).
OUTLOOK FOR FRI JUL 19        392 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      603 (GOOD)
ELLENSBURG    641 (GOOD)
GOLDENDALE    463 (FAIR)
TRI-CITIES    366 (FAIR)
WALLA WALLA   507 (FAIR)
YAKIMA        626 (GOOD)
BEND         1050 (GOOD)
PRINEVILLE   1042 (GOOD)
ENTERPRISE    198 (POOR)
HERMISTON     662 (GOOD)
JOHN DAY     1050 (GOOD)
LA GRANDE     539 (FAIR)
MADRAS        486 (FAIR)
MEACHAM       629 (GOOD)
PENDLETON     703 (GOOD)
REDMOND       947 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    563 (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.
$$