Search results
Results from the WOW.Com Content Network
For example, a 10-year flood has a 1/10 = 0.1 or 10% chance of being exceeded in any one year and a 50-year flood has a 0.02 or 2% chance of being exceeded in any one year. This does not mean that a 100-year flood will happen regularly every 100 years, or only once in 100 years. Despite the connotations of the name "return period".
The race began with an enticing spinnaker run, once out of the Sydney Heads increasing to about 20 knots (37 km/h) for the first 8 hours until around Port Kembla. There was a south bound current running at about 2 knots (3.7 km/h) off the NSW coast so when the southerly change came through it raised peaky seas and as the effect of the low ...
In North America, the only one of the four major team sports to stop play due to rain is baseball, although football and soccer can be delayed if lightning is reported in the area. Individual sports such as golf, tennis and auto racing are also subject to rainouts, in the last case because a wet racetrack poses a risk of hydroplaning for ...
The global models are run at varying times into the future. The Met Office's Unified Model is run six days into the future, [55] the European Centre for Medium-Range Weather Forecasts model is run out to 10 days into the future, [56] while the Global Forecast System model run by the Environmental Modeling Center is run 16 days into the future. [57]
Top: Weather Research and Forecasting model simulation of Hurricane Rita tracks. Bottom: The spread of National Hurricane Center multi-model ensemble forecast. Ensemble forecasting is a method used in or within numerical weather prediction. Instead of making a single forecast of the most likely weather, a set (or ensemble) of forecasts is produced.
Synchronized weather balloon launches have helped meteorologists create forecasts over the past 150 years, and now the old tradition is going high tech. Sensors beam data back down to Earth every ...
Severe weather is one type of extreme weather, which includes unexpected, unusual, severe, or unseasonal weather and is by definition rare for that location or time of the year. [5] Due to the effects of climate change , the frequency and intensity of some of the extreme weather events are increasing, for example, heatwaves and droughts .
Significant track errors still occur on occasion, as seen in this Ernesto (2006) early forecast. The NHC official forecast is light blue, while the storm's actual track is the white line over Florida. A tropical cyclone forecast model is a computer program that uses meteorological data to forecast aspects of the future state of tropical cyclones.