341
AUUS46 KPDT 311131
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
431 AM PDT FRI MAY 31 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 2-5 MPH.          N 3-6 MPH.
TRANSPORT WINDS               SW 3-6 MPH.         NE 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT JUN 1         GOOD.
OUTLOOK FOR SUN JUN 2         FAIR.

VENTILATION INDEX (CATEGORY)  36 (POOR).          167 (POOR).
OUTLOOK FOR SAT JUN 1         596 (FAIR).
OUTLOOK FOR SUN JUN 2         532 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-4 MPH.         SE 3-6 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         S 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT JUN 1         FAIR.
OUTLOOK FOR SUN JUN 2         FAIR.

VENTILATION INDEX (CATEGORY)  43 (POOR).          212 (POOR).
OUTLOOK FOR SAT JUN 1         595 (FAIR).
OUTLOOK FOR SUN JUN 2         469 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 1-3 MPH.          N 2-4 MPH.
TRANSPORT WINDS               N 3-6 MPH.          W 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT JUN 1         FAIR.
OUTLOOK FOR SUN JUN 2         GOOD.

VENTILATION INDEX (CATEGORY)  80 (POOR).          147 (POOR).
OUTLOOK FOR SAT JUN 1         438 (FAIR).
OUTLOOK FOR SUN JUN 2         777 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-5 MPH.          N 3-7 MPH.
TRANSPORT WINDS               S 3-7 MPH.          N 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT JUN 1         FAIR.
OUTLOOK FOR SUN JUN 2         FAIR.

VENTILATION INDEX (CATEGORY)  47 (POOR).          222 (POOR).
OUTLOOK FOR SAT JUN 1         575 (FAIR).
OUTLOOK FOR SUN JUN 2         557 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      226 (POOR)
ELLENSBURG    211 (POOR)
GOLDENDALE    270 (POOR)
TRI-CITIES     85 (POOR)
WALLA WALLA   112 (POOR)
YAKIMA        217 (POOR)
BEND          183 (POOR)
PRINEVILLE     46 (POOR)
ENTERPRISE    103 (POOR)
HERMISTON     151 (POOR)
JOHN DAY      201 (POOR)
LA GRANDE     129 (POOR)
MADRAS        222 (POOR)
MEACHAM       117 (POOR)
PENDLETON     247 (POOR)
REDMOND       139 (POOR)
SENECA        281 (POOR)
THE DALLES    240 (POOR)

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.
$$