Noaa Forecast Portland (2024)

FAQs

How accurate is NOAA weather? ›

A seven-day forecast can accurately predict the weather about 80 percent of the time and a five-day forecast can accurately predict the weather approximately 90 percent of the time. However, a 10-day—or longer—forecast is only right about half the time.

Snow and Ice Outlook

There are currently no active snow events at this location.

N wind 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: N 2 ft at 5 seconds and NW 4 ft at 8 seconds. Areas of dense fog in the morning, then patchy fog in the afternoon.

Every six hours NHC will issue updated text and graphics — all available on hurricanes.gov — that include track and intensity forecasts for the next five days, storm surge watches and warnings, coastal tropical storm and hurricane watches and warnings for wind, along with the chances of and time of arrival of tropical ...

For a period of fifty-eight days, data was collected from all three companies regarding temperature, humidity, and wind speed. After analyzing the data, it was concluded that AccuWeather produced the most accurate weather forecasts.

According to ForecastWatch, the premier organization for evaluating the accuracy of weather forecasts, The Weather Company is more likely to be the most accurate across all geographic regions studied (U.S., Canada, Central America, South America, Europe, Africa, Middle East and Asia-Pacific) and time periods covered.

On 29 January 1921, sustained winds reached 113 mph with gust estimated to 150 mph occurred at this site, the strongest winds ever observed over Washington State. Extraordinary damage occurred over much of coastal Washington during this event.

Santa Ana Winds occur when air from a region of high pressure over the dry, desert region of the southwestern U.S. flows westward towards low pressure located off the California coast. This creates dry winds that flow east to west through the mountain passages in Southern California.

This airflow is caused by the temperature differences between the sand and water. The air above the hot sand heats up and starts to rise as it becomes less dense, creating a local low air pressure zone. Above the cold-water dish the air cools and becomes denser, leading to a local high air pressure zone.

This year, NOAA predicts a very high likelihood (85% chance) of an above-normal Atlantic hurricane season (2), with 17-25 named storms (average is 14), 8-13 hurricanes (average is 7), and 4-7 major hurricanes (average is 3) (3).

Which country has the most hurricanes? ›

Aside from stronger winds, the dirty side is also where you generally find the heaviest rain, the highest storm surge, and the greatest potential for tornadoes. These effects are amplified because the hurricane's motion adds to the speed of the swirling winds and pushes more water and moisture onshore.

NOAA headquarters

NOAA's dedicated scientists use cutting-edge research and high-tech instrumentation to provide citizens, planners, emergency managers and other decision makers with reliable information they need, when they need it.

With the most complete global real-time and historical data, most robust database of forecast models, most advanced forecast engine globally, proprietary patents, and comprehensive validation results, AccuWeather is the most accurate weather company worldwide.

NOAA Hi-Def Radar is one of the most popular weather apps for good reason: it loads incredibly fast, has useful bookmarking features, and gives you a ton of information about severe weather conditions.

For accuracy and reliability, brands like Davis Instruments and Ambient Weather are highly recommended. Davis Instruments' weather stations, especially the Vantage Vue and Vantage Pro2, are recognized for professional-grade precision. Ambient Weather also offers robust functionality with stations like the WS-2902C.