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Portland weather alerts

3 active alerts for Portland, Oregon right now: 3 Frost Advisories.

26 in the last 30 days 26 in 12 months (since Aug 30) most common: Frost Advisory Get alerts on your phone →

Active alerts for Multnomah County

NWS issues alerts by county; Portland is in Multnomah County. Refreshed every few minutes; times in PDT.

Minor Expected Starts in 19 hr

Frost Advisory

Issued Wed, Oct 21, 6:55 PM PDT by NWS Portland OR Until Fri, Oct 23, 9:00 AM PDT (in 1 day)

Area: Central Oregon Coast Range Lowlands; Central Oregon Coast Range; Tualatin Valley; Willapa Hills; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills

* WHAT...Temperatures as low as 33 to 36 degrees will result in frost formation. * WHERE...In Oregon, Tualatin Valley, Central Oregon Coast Range, and Central Oregon Coast Range Lowlands Counties. In Washington, Cowlitz County Lowlands, North Clark County Lowlands, South Washington Cascade Foothills, and Willapa Hills Counties. * WHEN...For the first Fros...

What it means: Frost is expected on the ground. Cover sensitive plants overnight.

Full alert with map and forecast →
Minor Expected Starts in 2 day

Frost Advisory

Issued Wed, Oct 21, 6:55 PM PDT by NWS Portland OR Until Sat, Oct 24, 9:00 AM PDT (in 2 days)

Area: Central Oregon Coast Range Lowlands; Central Oregon Coast Range; Tualatin Valley; Willapa Hills; Cowlitz County Lowlands; North Clark County Lowlands; South Washington Cascade Foothills

* WHAT...Temperatures as low as 33 to 36 degrees will result in frost formation. * WHERE...In Oregon, Tualatin Valley, Central Oregon Coast Range, and Central Oregon Coast Range Lowlands Counties. In Washington, Cowlitz County Lowlands, North Clark County Lowlands, South Washington Cascade Foothills, and Willapa Hills Counties. * WHEN...For the first Fros...

What it means: Frost is expected on the ground. Cover sensitive plants overnight.

Full alert with map and forecast →
Minor Expected Starts in 2 day

Frost Advisory

Issued Wed, Oct 21, 6:55 PM PDT by NWS Portland OR Until Sat, Oct 24, 9:00 AM PDT (in 2 days)

Area: Clatsop County Coast; Tillamook County Coast; Central Coast of Oregon; Lower Columbia River; Inner Portland Metro; East Portland Metro; Outer Southeast Portland Metro; West Columbia River Gorge of Oregon above 500 ft;...

* WHAT...Temperatures as low as 34 to 36 degrees will result in frost formation. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...From 11 PM Friday to 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

What it means: Frost is expected on the ground. Cover sensitive plants overnight.

Full alert with map and forecast →

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Where

Multnomah County on the map

Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.

Last 30 days

Recent alerts for Multnomah County

AlertIssuedEndedIssued by
Frost Advisory Oct 13, 7:48 AM Oct 13, 8:00 AM Portland OR
Frost Advisory Oct 13, 4:39 AM Oct 13, 8:00 AM Portland OR
Frost Advisory Oct 12, 10:58 PM Oct 13, 8:00 AM Portland OR
Frost Advisory Oct 12, 10:21 AM Oct 13, 8:00 AM Portland OR
Frost Advisory Oct 12, 10:05 AM Oct 13, 8:00 AM Portland OR
Frost Advisory Oct 12, 10:02 AM Oct 13, 2:00 AM Portland OR
Frost Advisory Oct 11, 10:39 PM Oct 12, 8:00 AM Portland OR
Frost Advisory Oct 11, 10:00 AM Oct 12, 8:00 AM Portland OR
Frost Advisory Oct 11, 8:51 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 11, 1:01 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 10, 10:13 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 10, 10:11 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 10, 4:30 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 10, 12:41 AM Oct 11, 9:00 AM Portland OR
Frost Advisory Oct 9, 10:37 AM Oct 11, 9:00 AM Portland OR
Special Weather Statement Oct 5, 6:52 AM Oct 5, 10:00 AM Portland OR
Wind Advisory Sep 25, 10:50 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 25, 9:19 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 25, 8:03 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 25, 7:44 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 25, 1:50 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 25, 12:11 AM Sep 25, 11:00 AM Portland OR
Wind Advisory Sep 24, 6:00 PM Sep 25, 11:00 AM Portland OR

Pattern

What Multnomah County gets alerted for

Every alert that named Multnomah County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Frost Advisory
18
Wind Advisory
7
Special Weather Statement
1

Plain English

What these alerts mean

A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.

Frost Advisory

Frost is expected on the ground. Cover sensitive plants overnight.

Special Weather Statement

A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.

Wind Advisory

Sustained winds of 30 mph or more, or gusts to 45 mph, are expected. Use caution driving high-profile vehicles.

Nearby

Alerts near Portland

Cities

Vancouver, WA3 Beaverton, OR6 Tigard, OR6 Gresham, OR3 Hillsboro, OR6 Salem, OR2

Neighbouring counties in Oregon

Clackamas County5 Hood River County1 Washington County6 Columbia County3 Yamhill County4 Wasco County1 All of Oregon →

Questions

About Portland alerts

How do I get Portland weather alerts on my iPhone?

Install Forecast Bar, add Portland as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Multnomah County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.

Where do these alerts come from?

From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names Multnomah County, the county Portland sits in. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.

What is the difference between a watch, a warning and an advisory?

A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.

Can I get this data as JSON?

Yes. /weather-alerts/or/portland.json returns the active alerts, the last 30 days and the 12-month counts for Portland, refreshed every minute. Please cache responses and credit National Weather Service as the source.

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Never find out about a Multnomah County alert from this page again

Add Portland in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.

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