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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.


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

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