WASHINGTON, December 8, 2013 — Over the weekend, metro area residents were given a plethora of weather forecasts, ranging from freezing rain and sleet to between zero to five inches of snow, yet many doubt the accuracy of future predictions.
Often enough over the past few weeks, weather forecasters have “cried wolf,” warning the DC metro area that major storm fronts would impact the area, only for the predictions to never materialize. Now, as forecasters predict another 5 inches for the DC area tomorrow, many are unsure of what to believe.
Note: Readers are advised to take the best safety precautions available to them.
|The Weather Channel||78.41%|
|National Weather Service||72.48%|
The website also states “It rained or snowed 65% of the time in Washington last month when WeatherBug’s text forecasts called for precipitation, and 6% of the time when they did not.”
According to a Dartmouth study, “Weather forecasters tend to be most accurate during summer while they tend to be least accurate during fall and winter.”
Scientists point to technology as the main culprit, stating the United States does not used advanced enough computers. The American Geophysical Union (AGU) explains “Besides the increasing gap in weather satellite technology, Europe and Japan are also well ahead in computer power available for numerical weather prediction models.
“…much of the inferiority of U.S. global numerical weather prediction can be traced to the third-rate operational computer resources available to the National Weather Service (NWS), an inferiority that can only be characterized as a national embarrassment.
… the NWS weather prediction computers are … inferior to those of other national weather services.”
The AGU, quoting Cliff Mass, lays out the problem and the solution in simple terms, “A big part of the problem is that NOAA management has decided to put priority on the oceans and climate while they short-change weather prediction. This has been a deliberate and long-term policy.
“Unfortunately, the U.S. Congress has not reined them in. The irony is that NOAA understands how important and popular the National Weather Service is and demands that NWS products have NOAA stamped all over it–while draining critical resources the NWS requires to do a proper job.”
Tomorrow’s forecasts also present a murky picture for those trying to make plans to deal with the weather. While there seems to be a consensus that it will snow tomorrow, each agency has variability in both the prediction and the type of information given:
|The Weather Channel||Snow likely. Cold. Temps nearly steady in the low to mid 30s. Winds NW at 5 to 10 mph. 2 to 4 inches of snow expected.|
|AccuWeather||Cloudy and colder with snow and sleet tapering off, accumulating 1-3 inches|
|Weather Underground||Snow during the morning will give way to some clearing during the afternoon. Temps nearly steady in the low to mid 30s. Winds NW at 5 to 10 mph. Snow accumulating 3 to 5 inches.|
|National Weather Service||Snow, mainly before noon. High near 33. North wind 6 to 8 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.|
|CustomWeather||Snow showers. Broken clouds. Chilly. 1.01″ (snow)|
|Foreca||Partly cloudy. Snow showers. [translated]|
|WeatherBug||Snow and sleet in the morning…then a chance of snow in the afternoon. Snow and sleet accumulation of 3 to 5 inches. Highs in the lower 30s. North winds 5 to 10 mph…becoming northwest in the afternoon. Chance of precipitation near 100 percent.|
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