907
AUUS46 KPDT 191129
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
429 AM PDT SAT OCT 19 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 5-10 MPH.         W 8-14 MPH.
TRANSPORT WINDS               S 8-14 MPH.         SW 11-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN OCT 20        FAIR.
OUTLOOK FOR MON OCT 21        GOOD.

VENTILATION INDEX (CATEGORY)  39 (POOR).          396 (FAIR).
OUTLOOK FOR SUN OCT 20        200 (POOR).
OUTLOOK FOR MON OCT 21        644 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-15 MPH.         SW 8-15 MPH.
TRANSPORT WINDS               S 6-15 MPH.         SW 13-23 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN OCT 20        GOOD.
OUTLOOK FOR MON OCT 21        GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          366 (FAIR).
OUTLOOK FOR SUN OCT 20        355 (FAIR).
OUTLOOK FOR MON OCT 21        590 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 12-21 MPH.        S 9-16 MPH.
TRANSPORT WINDS               S 10-14 MPH.        S 15-17 MPH.
MIXING HEIGHT                 4000 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SUN OCT 20        GOOD.
OUTLOOK FOR MON OCT 21        FAIR.

VENTILATION INDEX (CATEGORY)  61 (POOR).          404 (FAIR).
OUTLOOK FOR SUN OCT 20        470 (FAIR).
OUTLOOK FOR MON OCT 21        242 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 10-19 MPH.        W 6-16 MPH.
TRANSPORT WINDS               S 10-19 MPH.        SW 10-21 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SUN OCT 20        GOOD.
OUTLOOK FOR MON OCT 21        GOOD.

VENTILATION INDEX (CATEGORY)  67 (POOR).          514 (FAIR).
OUTLOOK FOR SUN OCT 20        311 (FAIR).
OUTLOOK FOR MON OCT 21        552 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      245 (POOR)
ELLENSBURG    268 (POOR)
GOLDENDALE    320 (FAIR)
TRI-CITIES    544 (FAIR)
WALLA WALLA   513 (FAIR)
YAKIMA        158 (POOR)
BEND          291 (POOR)
PRINEVILLE    279 (POOR)
ENTERPRISE    241 (POOR)
HERMISTON     292 (POOR)
JOHN DAY      310 (FAIR)
LA GRANDE     359 (FAIR)
MADRAS        381 (FAIR)
MEACHAM       412 (FAIR)
PENDLETON     355 (FAIR)
REDMOND       210 (POOR)
SENECA        282 (POOR)
THE DALLES    167 (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.
$$