Daily Dispersion Outlook
Issued by NWS Pendleton, OR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8
000
AUUS46 KPDT 031128
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
328 AM PST FRI DEC 3 2021

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-6 MPH.         N 2-6 MPH.
TRANSPORT WINDS               SE 2-6 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT DEC 4         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          39 (POOR).
OUTLOOK FOR SAT DEC 4         298 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          N 5-10 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT DEC 4         GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          44 (POOR).
OUTLOOK FOR SAT DEC 4         313 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-4 MPH.        S 5-10 MPH.
TRANSPORT WINDS               VRB 0-4 MPH.        SW 10-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT DEC 4         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          40 (POOR).
OUTLOOK FOR SAT DEC 4         280 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       34 (POOR)
ELLENSBURG     36 (POOR)
GOLDENDALE     57 (POOR)
TRI-CITIES     61 (POOR)
WALLA WALLA    25 (POOR)
YAKIMA         44 (POOR)
BEND           25 (POOR)
PRINEVILLE     38 (POOR)
ENTERPRISE     25 (POOR)
HERMISTON      42 (POOR)
JOHN DAY       40 (POOR)
LA GRANDE      37 (POOR)
MADRAS         25 (POOR)
MEACHAM        25 (POOR)
PENDLETON      57 (POOR)
REDMOND        25 (POOR)
SENECA         78 (POOR)
THE DALLES     39 (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.

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.