751
AUUS46 KPDT 051136
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
436 AM PDT SAT OCT 5 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 4-9 MPH.          NE 5-9 MPH.
TRANSPORT WINDS               S 5-8 MPH.          NE 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SUN OCT 6         POOR.
OUTLOOK FOR MON OCT 7         POOR.

VENTILATION INDEX (CATEGORY)  27 (POOR).          80 (POOR).
OUTLOOK FOR SUN OCT 6         85 (POOR).
OUTLOOK FOR MON OCT 7         98 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          SE 3-6 MPH.
TRANSPORT WINDS               W 3-6 MPH.          SE 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SUN OCT 6         POOR.
OUTLOOK FOR MON OCT 7         POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          105 (POOR).
OUTLOOK FOR SUN OCT 6         114 (POOR).
OUTLOOK FOR MON OCT 7         110 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-4 MPH.          S 1-3 MPH.
TRANSPORT WINDS               S 2-4 MPH.          S 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN OCT 6         GOOD.
OUTLOOK FOR MON OCT 7         GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          188 (POOR).
OUTLOOK FOR SUN OCT 6         612 (GOOD).
OUTLOOK FOR MON OCT 7         266 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-9 MPH.          NE 4-8 MPH.
TRANSPORT WINDS               S 6-10 MPH.         NE 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SUN OCT 6         POOR.
OUTLOOK FOR MON OCT 7         FAIR.

VENTILATION INDEX (CATEGORY)  40 (POOR).          105 (POOR).
OUTLOOK FOR SUN OCT 6         125 (POOR).
OUTLOOK FOR MON OCT 7         144 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      113 (POOR)
ELLENSBURG    141 (POOR)
GOLDENDALE    106 (POOR)
TRI-CITIES     66 (POOR)
WALLA WALLA    77 (POOR)
YAKIMA        115 (POOR)
BEND          210 (POOR)
PRINEVILLE    247 (POOR)
ENTERPRISE    102 (POOR)
HERMISTON      63 (POOR)
JOHN DAY      203 (POOR)
LA GRANDE     214 (POOR)
MADRAS        109 (POOR)
MEACHAM       145 (POOR)
PENDLETON     120 (POOR)
REDMOND       180 (POOR)
SENECA        239 (POOR)
THE DALLES    140 (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.
$$