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
000
AUUS46 KPDT 211215
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PST TUE NOV 21 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-7 MPH.         NE-SE 6-12 MPH.
TRANSPORT WINDS               SE 3-7 MPH.         SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED NOV 22        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          28 (POOR).
OUTLOOK FOR WED NOV 22        50 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          E 5-10 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 35-45 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED NOV 22        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          38 (POOR).
OUTLOOK FOR WED NOV 22        25 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         S 15-20 MPH.
TRANSPORT WINDS               NW 4-9 MPH.         SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED NOV 22        POOR.

VENTILATION INDEX (CATEGORY)  39 (POOR).          81 (POOR).
OUTLOOK FOR WED NOV 22        108 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       31 (POOR)
ELLENSBURG     31 (POOR)
GOLDENDALE     33 (POOR)
TRI-CITIES     30 (POOR)
WALLA WALLA    25 (POOR)
YAKIMA         43 (POOR)
BEND          200 (POOR)
PRINEVILLE    127 (POOR)
ENTERPRISE     30 (POOR)
HERMISTON      45 (POOR)
JOHN DAY      113 (POOR)
LA GRANDE      86 (POOR)
MADRAS        215 (POOR)
MEACHAM        47 (POOR)
PENDLETON      29 (POOR)
REDMOND       150 (POOR)
SENECA         90 (POOR)
THE DALLES     36 (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/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

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.