083
AUUS46 KPDT 181132
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
432 AM PDT FRI OCT 18 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 5-11 MPH.         SW 5-10 MPH.
TRANSPORT WINDS               S 5-11 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT OCT 19        GOOD.
OUTLOOK FOR SUN OCT 20        GOOD.

VENTILATION INDEX (CATEGORY)  59 (POOR).          331 (FAIR).
OUTLOOK FOR SAT OCT 19        421 (FAIR).
OUTLOOK FOR SUN OCT 20        272 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-6 MPH.          S 5-10 MPH.
TRANSPORT WINDS               W 2-6 MPH.          SW 10-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT OCT 19        GOOD.
OUTLOOK FOR SUN OCT 20        GOOD.

VENTILATION INDEX (CATEGORY)  33 (POOR).          258 (POOR).
OUTLOOK FOR SAT OCT 19        379 (FAIR).
OUTLOOK FOR SUN OCT 20        413 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 1-3 MPH.          N 1-2 MPH.
TRANSPORT WINDS               S 2-4 MPH.          SW 5-9 MPH.
MIXING HEIGHT                 4000 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT OCT 19        GOOD.
OUTLOOK FOR SUN OCT 20        GOOD.

VENTILATION INDEX (CATEGORY)  30 (POOR).          149 (POOR).
OUTLOOK FOR SAT OCT 19        405 (FAIR).
OUTLOOK FOR SUN OCT 20        517 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-12 MPH.         W 3-8 MPH.
TRANSPORT WINDS               S 6-12 MPH.         SW 9-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT OCT 19        GOOD.
OUTLOOK FOR SUN OCT 20        FAIR.

VENTILATION INDEX (CATEGORY)  73 (POOR).          270 (POOR).
OUTLOOK FOR SAT OCT 19        563 (FAIR).
OUTLOOK FOR SUN OCT 20        347 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      202 (POOR)
ELLENSBURG    207 (POOR)
GOLDENDALE    249 (POOR)
TRI-CITIES    441 (FAIR)
WALLA WALLA   306 (FAIR)
YAKIMA        191 (POOR)
BEND          197 (POOR)
PRINEVILLE    222 (POOR)
ENTERPRISE     93 (POOR)
HERMISTON     325 (FAIR)
JOHN DAY      210 (POOR)
LA GRANDE     156 (POOR)
MADRAS        312 (FAIR)
MEACHAM       231 (POOR)
PENDLETON     276 (POOR)
REDMOND       153 (POOR)
SENECA        242 (POOR)
THE DALLES    136 (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.
$$