Weather-Wise.org

Weather Queries .NOAA’s Climate Prediction Center (CPC) takes a different approach to
averages. In its monthly and seasonal outlooks, it defines three ranges of temperature (or precipitation) that are equally likely. For example (note that I am making these numbers up), suppose that the average temperature for April in Stratford, Connecticut, is 49°F. From past records, the CPC determines that there is equal likelihood (a 1/3 chance) that the average April temperature will be below 47°, between 47° and 51° (near normal), and above 51°.

ANTARCTIC RESCUEThe most difficult part of forecasting for Antarctica is the lack of data. Antarctica has few weather reporting stations because it has no permanent residents; there are not towns, cities, or commercial airports and most visitors come to conduct research or support the researchers.

D-Day Weather RevisitedThe European Centre for Medium-Range Weather Forecast (ECMWF) used modern assimilation techniques and weather data from the National Weather Service to reconstruct the weather leading up to and including Jun 6,1994. ECMWF's recent analysis reanalysis of the original forecasts illustrates the difficulties the 1944 forecasters faced-due to stormy weather in the Atlantic and fronts in the English Channel-and their subsequent accuracy.