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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 - Chehalis Abstand
Chehalis Flughafen 1.9 km
Olympia Regional Airport 19.6 km
Southwest Washington Regional Airport 34.1 km
Sanderson Field Airport 40.0 km
Gray Army Airfield 49.5 km
Bremerton Ntnl Arpt 55.8 km
Tacoma Narrows Airport 55.9 km
Scappoose Industrial Airpark Airport 56.0 km
McChord Field 61.2 km
Hillsboro Airport 68.7 km
Pearson Field 72.5 km
Portland Flughafen 76.2 km
Puyallup Flughafen 80.1 km
Seattle-Tacoma Intl. Airport 87.9 km
Aurora State Airport 88.5 km
King Flughafen 90.6 km
McMinnville Municipal Airport 91.0 km
Portland- Troutdale Airport 92.1 km
Renton Municipal Airport 97.3 km
Coast Guard Air Station Port Angeles 102.7 km
William R. Fairchild Intl. Airport 106.5 km
Snohomish 106.6 km
McNary Field Airport 106.6 km
Astoria Regional Airport 106.8 km
Naval Air Station Whidbey 106.9 km
Bowerman Airport 109.3 km
Friday Harbor Flughafen 112.3 km
Victoria Gonzales 113.5 km
Victoria Uni. Campbell Scientific 114.7 km
Tillamook Airport 121.4 km
Orcas Island Airport 123.7 km
Skagit Regional Airport 124.3 km
Arlington Flughafen 126.9 km
Saturna Island 128.7 km
Saturna/capmon Cs 129.2 km
Victoria Int. Airport 131.6 km
Malahat 132.2 km
Corvallis Municipal Airport 136.4 km
Bellingham Intl. Airport 137.2 km
White Rock Campbell Scientific 143.7 km
Sheringham 149.2 km
Burns Bog 149.5 km
Sands Head 152.6 km
Vancouver Flughafen 154.5 km
Pitt Meadows Campbell Scientific 156.1 km
North Cowichan 156.3 km
Abbotsford Flughafen 157.1 km
Eugene Airport 157.5 km
Vancouver Hrbour 160.5 km
West Vancouver 164.8 km
Newport Municipal Airport 175.9 km
Nanaimo Airport 177.7 km
Entrance Isl. 181.7 km
Stampede 185.5 km
Squamish Flughafen 190.6 km
Quillayute Airport 193.3 km
Agassiz 203.8 km
Blackcombe Mtn Base 209.7 km
Columbia Gorge Regional Airport 209.8 km
Whistler Flughafen 209.9 km
Ballenas Island 211.2 km
Callaghan Valley 211.6 km
Roseburg Regional Airport 213.3 km
Pemberton Flughafen 220.9 km
Hope Aerodrome 228.3 km
Qualicum Airport 228.9 km
Hope 229.4 km
Sisters Island 238.6 km
Southwest Oregon Regional Airport 245.9 km
Redmond Flughafen 246.0 km
Bend Municipal Airport 248.5 km
Powell River 258.4 km
Medford Flughafen 260.3 km
Lytton 261.6 km
Lytton 261.6 km
Lillooet 266.0 km
Prineville Flughafen 269.0 km
Yakima Flughafen 270.9 km
Bowers Airport 271.7 km
Port Alberni 274.4 km
Comox 286.7 km
Crater Lake 302.8 km
Ashcroft 303.9 km
Pangborn Memorial Airport 310.9 km
Merritt 316.8 km
Brookings Airport 319.1 km
Princeton 319.7 km
Campbell River Airport 327.9 km
Sunnyside Muni 334.1 km
Tofino 346.7 km
Kamloops Flughafen 366.2 km
Kamloops 366.4 km
Ephrata Municipal Airport 385.8 km
Lake County Airport 388.2 km
Omak Airport 395.3 km
Summerland 405.4 km
Grant County Intl. Airport 407.5 km
Penticton Flughafen 408.1 km
Fanny Island 411.7 km
Hermiston Municipal Airport 414.7 km

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