948
AUUS46 KPDT 141151
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
451 AM PDT TUE MAY 14 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          W 5-10 MPH.
TRANSPORT WINDS               SW 7-10 MPH.        NW 8-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED MAY 15        FAIR.
OUTLOOK FOR THU MAY 16        GOOD.

VENTILATION INDEX (CATEGORY)  58 (POOR).          473 (FAIR).
OUTLOOK FOR WED MAY 15        478 (FAIR).
OUTLOOK FOR THU MAY 16        887 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          NW 5-9 MPH.
TRANSPORT WINDS               NW 5-9 MPH.         NW 8-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED MAY 15        FAIR.
OUTLOOK FOR THU MAY 16        GOOD.

VENTILATION INDEX (CATEGORY)  40 (POOR).          437 (FAIR).
OUTLOOK FOR WED MAY 15        535 (FAIR).
OUTLOOK FOR THU MAY 16        849 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-8 MPH.          NW 7-12 MPH.
TRANSPORT WINDS               W 5-7 MPH.          N 11-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAY 15        FAIR.
OUTLOOK FOR THU MAY 16        GOOD.

VENTILATION INDEX (CATEGORY)  58 (POOR).          606 (GOOD).
OUTLOOK FOR WED MAY 15        414 (FAIR).
OUTLOOK FOR THU MAY 16        981 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-8 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               SW 7-14 MPH.        NW 8-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED MAY 15        FAIR.
OUTLOOK FOR THU MAY 16        GOOD.

VENTILATION INDEX (CATEGORY)  75 (POOR).          396 (FAIR).
OUTLOOK FOR WED MAY 15        433 (FAIR).
OUTLOOK FOR THU MAY 16        862 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      594 (FAIR)
ELLENSBURG    720 (GOOD)
GOLDENDALE    356 (FAIR)
TRI-CITIES    535 (FAIR)
WALLA WALLA   345 (FAIR)
YAKIMA        448 (FAIR)
BEND          426 (FAIR)
PRINEVILLE    477 (FAIR)
ENTERPRISE    612 (GOOD)
HERMISTON     459 (FAIR)
JOHN DAY      557 (FAIR)
LA GRANDE     599 (FAIR)
MADRAS        380 (FAIR)
MEACHAM       422 (FAIR)
PENDLETON     408 (FAIR)
REDMOND       449 (FAIR)
SENECA        632 (GOOD)
THE DALLES    315 (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.
$$