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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 - Sumter Distance
Sumter Aéroport 1.3 km
Shaw Air Force Base Aéroport 13.4 km
Santee Cooper Regional (Aéroport) 17.4 km
Summerville Aéroport 18.9 km
Woodward Field 24.5 km
Hartsville Regional (Aéroport) 26.9 km
Davidson County (Aéroport) 34.0 km
Stanly County (Aéroport) 35.0 km
Charlotte- Monroe Executive (Aéroport) 35.3 km
Mid-Carolina Regional (Aéroport) 36.0 km
Anson County (Aéroport) 36.2 km
Lowcountry Regional (Aéroport) 37.8 km
Berkeley County (Aéroport) 38.0 km
Charleston (Aéroport) 40.8 km
Beaufort Aéroport 42.9 km
Smith Reynolds (Aéroport) 43.0 km
Charleston Aéroport 45.4 km
Concord-Padgett Regional (Aéroport) 47.5 km
Marine Corps Air Station Beaufort Aéroport 49.8 km
McEntire Joint National Guard Base 50.1 km
Hilton Head (Aéroport) 50.7 km
Mount Airy/Surry 50.7 km
Darlington 52.7 km
Kingstree Aéroport 55.1 km
Orangeburg Municipal (Aéroport) 56.4 km
Lancaster County (Aéroport) 57.8 km
Piedmont Triad Intl. Airport 59.8 km
Virginia Tech Montgomery Executive (Aéroport) 60.6 km
Asheboro Aéroport 60.9 km
Blue Ridge (Aéroport) 62.6 km
Mount Pleasant Regional (Aéroport) 66.5 km
Richmond County (Aéroport) 68.0 km
New River Valley (Aéroport) 68.7 km
Aéroport international Charlotte-Douglas 68.7 km
Florence Aéroport 68.8 km
Jim Hamilton 72.4 km
Greenbrier Valley (Aéroport) 72.5 km
Hillsville 72.6 km
Statesville Muni Ai 74.0 km
Roanoke Aéroport 76.4 km
Rock Hill/York 80.0 km
Fairfield County (Aéroport) 84.7 km
Columbia Metropolitan (Aéroport) 85.3 km
Gastonia Municipal (Aéroport) 91.6 km
Wilkes County (Aéroport) 92.6 km
Lincolnton Aéroport 94.2 km
Hot Springs 95.2 km
Chester Catawba Regional (Aéroport) 95.2 km
Hunter Army Airfield 95.7 km
Camp Mackall 96.8 km
Siler City Muni 99.9 km
Savannah/Hilton Head (Aéroport) 100.2 km
Allendale Aéroport 103.9 km
Burlington- Alamance Regional (Aéroport) 106.3 km
Raleigh 109.2 km
Moore County (Aéroport) 109.5 km
Laurinburg- Maxton (Aéroport) 110.6 km
New Smyrna Beach Municipal (Aéroport) 111.2 km
Mercer County (Aéroport) 111.6 km
Marion Aéroport 113.1 km
Georgetown Aéroport 115.5 km
Barnwell Regional (Aéroport) 116.3 km
Daytona Beach Aéroport 117.4 km
Hickory Regional (Aéroport) 119.1 km
Ormond Beach Municipal (Aéroport) 119.2 km
Mountain Empire (Aéroport) 122.6 km
Danville Regional (Aéroport) 124.0 km
Flagler County (Aéroport) 124.9 km
McKinnon St. Simons 125.4 km
Ashe County (Aéroport) 126.6 km
Aérodrome du nord-est de la Floride 130.5 km
Brunswick Golden Isles (Aéroport) 133.2 km
Base navale de Mayport 134.5 km
Conway Aéroport 136.7 km
Fernandina Beach Municipal (Aéroport) 137.1 km
MidCoast Regional Airport at Wright Army Airfield 140.3 km
Sylvania Aéroport 140.8 km
Foothills Regional (Aéroport) 141.0 km
Shelby Aéroport 141.0 km
Raleigh Executive Jetport 142.6 km
Newberry County (Aéroport) 143.9 km
Jacksonville Executive at Craig (Aéroport) 144.7 km
Aiken Regional (Aéroport) 148.4 km
Pineville Aéroport 148.7 km
Pope Field 150.3 km
Statesboro- Bulloch County (Aéroport) 156.2 km
Myrtle Beach (Aéroport) 157.8 km
Person County (Aéroport) 158.8 km
Simmons Army Airfield 159.4 km
Brookneal 161.2 km
Jacksonville (Aéroport) 161.9 km
Naval Air Station Jacksonville 162.0 km
Naval Air Station Jacksonville 162.0 km
Fayetteville Regional (Aéroport) 164.5 km
Palatka Aéroport 166.8 km
Richlands Aéroport 169.7 km
Claxton Aéroport 171.9 km
Jesup Aéroport 175.6 km
William M Tuck 176.1 km
Rutherfordton 178.0 km