2006-12-30 08:23:24 · 6 answers · asked by Ray 1 in Science & Mathematics ➔ Weather
It's really to give you a confidence index... if there is a 90% of rain people are likely to bring their umbrella, with a 10% chance of rain, you probably will not.
To be honest, in some cases we just use probability to cover ourselves for isolated events. For example, some days may look dry but because the atmosphere isn't always well-behaved, we will add a small chance for a shower.
2006-12-30 13:39:21 · answer #1 · answered by WxEtte 5 · 1⤊ 0⤋
According to a REAL meteorologist Who happens to be Meteorologist-in-Charge of the National Weather Service
Shreveport Weather Forecast Office
Shreveport, LA 71109,
"Meteorologists do use probability in their jobs. The probability of measurable rain, for example, is determined by a forecaster's confidence that a weather system will produce rainfall, multiplied by the amount of the area the forecaster thinks will be affected by the rainfall. For example, with a cold front moving through, the forecaster's confidence that it will produce rainfall is 80% (0.80), but only half (0.50) the area will be affected. The product of 0.80 times 0.50 is 0.40 or a 40% chance of rain."
Lee Harrison
Meteorologist-in-Charge
2006-12-30 14:13:56 · answer #2 · answered by cherokeeflyer 6 · 0⤊ 0⤋
The Meteorologist probably just guess that
2006-12-30 14:01:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
they might say "there will be a 40% chance of rain today"
2006-12-30 08:27:46 · answer #4 · answered by jake 5 · 0⤊ 0⤋
You can`t fool Mother Nature !!!
2006-12-30 08:38:20 · answer #5 · answered by jamesanderson22 5 · 0⤊ 1⤋
have u ever went 2 school?
2006-12-30 09:42:18 · answer #6 · answered by Anonymous · 1⤊ 2⤋