Alert archive / Oregon / Wind Advisories in 2025

Wind Advisory 4, NWS Portland, OR

December 7, 202512 counties in Oregon; 5 counties in Washington

NWS Portland, OR issued this wind advisory at Dec 7, 2025, 12:50 PM PST for 12 counties in Oregon; 5 counties in Washington. It took effect at Dec 8, 2025, 7:00 AM PST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Dec 7, 2025, 12:50 PM PST (20:50 UTC)
In effect from
Dec 8, 2025, 7:00 AM PST
Expired
Dec 9, 2025, 4:00 AM PST
In force
21 hr
Issued by
NWS Portland, OR

Counties Benton County, OR, Clackamas County, OR, Clatsop County, OR, Columbia County, OR, Lane County, OR, Lincoln County, OR, Marion County, OR, Multnomah County, OR, Polk County, OR, Tillamook County, OR, Washington County, OR, Yamhill County, OR, Clark County, WA, Cowlitz County, WA, Pacific County, WA, Skamania County, WA, Wahkiakum County, WA

The radar

The Portland,OR radar (KRTX), 30 km from the middle of the area, began a volume at 20:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Salem/Mcnary, OR (KSLE), launched 12:00Z, 8.8 hours before the alert went out and 59 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Salem/Mcnary, OR at 12:00Z on 2025-12-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salem/Mcnary, OR at 12:00Z on 2025-12-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 326 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
326 m²/s²
0-3 km storm-relative helicity
585 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Portland, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 7, 1:29 AM PSTRiver Flood WarningPQRTillamook3 days
Dec 7, 1:29 AM PSTRiver Flood WarningPQRClackamas, Multnomah69 hr
Dec 7, 1:50 AM PSTGale WarningPQR3 days
Dec 7, 2:19 PM PSTCoastal Flood AdvisoryPQRClatsop, Tillamook28 hr
Dec 7, 1:29 AM PSTRiver Flood WarningPQRWahkiakum5 days

Nearby

Wind Advisories in Oregon, 2025Wind Advisories in Washington, 2025Every wind advisory in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.