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 221117
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
417 AM PDT FRI MAR 22 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 2-5 MPH.          NE 7-12 MPH.
TRANSPORT WINDS               E 3-7 MPH.          NE 8-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT MAR 23        FAIR.
OUTLOOK FOR SUN MAR 24        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          225 (POOR).
OUTLOOK FOR SAT MAR 23        588 (FAIR).
OUTLOOK FOR SUN MAR 24        352 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-4 MPH.         NE 4-8 MPH.
TRANSPORT WINDS               N 3-6 MPH.          E 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT MAR 23        FAIR.
OUTLOOK FOR SUN MAR 24        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          175 (POOR).
OUTLOOK FOR SAT MAR 23        494 (FAIR).
OUTLOOK FOR SUN MAR 24        339 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 2-5 MPH.          S 14-19 MPH.
TRANSPORT WINDS               SE 4-8 MPH.         S 19-23 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT MAR 23        FAIR.
OUTLOOK FOR SUN MAR 24        FAIR.

VENTILATION INDEX (CATEGORY)  43 (POOR).          756 (GOOD).
OUTLOOK FOR SAT MAR 23        362 (FAIR).
OUTLOOK FOR SUN MAR 24        369 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-8 MPH.         NE 4-10 MPH.
TRANSPORT WINDS               SE 5-10 MPH.        E 6-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT MAR 23        FAIR.
OUTLOOK FOR SUN MAR 24        FAIR.

VENTILATION INDEX (CATEGORY)  33 (POOR).          265 (POOR).
OUTLOOK FOR SAT MAR 23        480 (FAIR).
OUTLOOK FOR SUN MAR 24        274 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      370 (FAIR)
ELLENSBURG    300 (POOR)
GOLDENDALE    264 (POOR)
TRI-CITIES    229 (POOR)
WALLA WALLA   156 (POOR)
YAKIMA        187 (POOR)
BEND         1039 (GOOD)
PRINEVILLE   1050 (GOOD)
ENTERPRISE    420 (FAIR)
HERMISTON     263 (POOR)
JOHN DAY     1050 (GOOD)
LA GRANDE     716 (GOOD)
MADRAS        663 (GOOD)
MEACHAM       689 (GOOD)
PENDLETON     237 (POOR)
REDMOND      1025 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    228 (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.