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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Stations météo à proximité - Tigard Distance
Aurora State (Aéroport) 10.2 km
Pearson Field 17.7 km
Portland Aéroport 21.6 km
Hillsboro (Aéroport) 21.6 km
Scappoose Industrial Airpark (Aéroport) 23.1 km
McNary Field (Aéroport) 39.9 km
Portland- Troutdale (Aéroport) 41.6 km
McMinnville Municipal (Aéroport) 42.9 km
Southwest Washington Regional (Aéroport) 44.8 km
Chehalis Aéroport 79.9 km
Corvallis Municipal (Aéroport) 80.0 km
Aéroport d'Eugène 93.4 km
Olympia Regional (Aéroport) 94.7 km
Gray Army Airfield 102.2 km
McChord Field 108.7 km
Tacoma Narrows (Aéroport) 113.0 km
Puyallup Aéroport 114.2 km
Tillamook (Aéroport) 116.6 km
Sanderson Field (Aéroport) 118.0 km
Bremerton Ntnl Arpt 125.5 km
Aéroport régional d'Astoria 132.1 km
Seattle-Tacoma (Aéroport) 132.3 km
Aéroport Boeing-Comté de King Aéroport 136.9 km
Renton Municipal (Aéroport) 138.8 km
Roseburg Regional (Aéroport) 147.6 km
Newport Municipal (Aéroport) 151.7 km
Aéroport du Paine Field 158.5 km
Bowerman (Aéroport) 161.4 km
Naval Air Station Whidbey 176.8 km
Arlington Aéroport 177.3 km
Columbia Gorge Regional (Aéroport) 178.6 km
Coast Guard Air Station Port Angeles 180.6 km
William R. Fairchild Intl. Airport 183.4 km
Medford Aéroport 184.3 km
Skagit Regional (Aéroport) 187.1 km
Friday Harbor Aéroport 189.4 km
Roberts Field 190.9 km
Bend Municipal (Aéroport) 191.0 km
Victoria Gonzales 192.2 km
Victoria Uni. Campbell Scientific 193.4 km
Stampede 193.9 km
Orcas Island (Aéroport) 199.3 km
Bellingham (Aéroport) 204.8 km
Southwest Oregon Regional (Aéroport) 205.8 km
Île Saturna 206.0 km
Saturna/capmon Cs 207.2 km
Victoria Int. (Aéroport) 210.1 km
Malahat 210.1 km
White Rock Campbell Scientific 216.9 km
Prineville Aéroport 217.7 km
Siskiyou 220.6 km
Abbotsford Aéroport 221.2 km
Sheringham 222.1 km
Burns Bog 226.1 km
Crater Lake 226.5 km
Pitt Meadows Campbell Scientific 227.8 km
Sands Head 231.2 km
Vancouver Aéroport 232.4 km
North Cowichan 233.4 km
Vancouver Hrbour 238.1 km
West Vancouver 242.7 km
Mont Shasta 250.6 km
Quillayute (Aéroport) 252.6 km
Agassiz 253.5 km
Nanaimo (Aéroport) 254.1 km
Yakima Aéroport 257.5 km
Entrance Isl. 259.0 km
Bowers (Aéroport) 265.9 km
Brookings Aéroport 266.4 km
Squamish Aéroport 268.2 km
Aérodrome de Hope 272.7 km
Hope 273.6 km
Crescent City 276.5 km
Ballenas Island 286.3 km
Qualicum (Aéroport) 301.7 km
Pangborn Memorial (Aéroport) 308.1 km
Sisters Island 311.7 km
Sunnyside Muni 315.7 km
Lake County (Aéroport) 324.4 km
Powell River 332.5 km
Alturas Aéroport 337.8 km
Port Alberni 341.9 km
Princeton 345.7 km
Comox 356.9 km
Ephrata Municipal (Aéroport) 377.6 km
Hermiston Municipal (Aéroport) 390.3 km
Campbell River (Aéroport) 396.3 km
Grant County Intl. Airport 397.4 km
Omak (Aéroport) 399.1 km
Tofino 405.3 km
Tri-Cities (Aéroport) 409.2 km
Summerland 421.3 km
Penticton Aéroport 422.6 km
Osoyoos 425.2 km
Grant County Regional (Aéroport) 427.4 km
Eastern Oregon Regional (Aéroport) 436.3 km
Burns Municipal (Aéroport) 437.5 km
Kelowna (Aéroport) 458.2 km
Meacham 484.3 km
Phare d'Estevan Point 490.2 km