Hint the number 100 is used to determine the answer.
2006-07-08 06:58:17 · 14 answers · asked by Jeff H 1 in Science & Mathematics ➔ Weather
The higher the humidity the more moisture in the air. The more moisture in the air the more likely it is to rain. 100 percent means the rain's got to came because it can't hold any more moisture.
2006-07-19 13:45:14 · answer #1 · answered by # one 6 · 0⤊ 0⤋
When we meteorologist give a forecast for the percentage of a chance of rain, we base this on spatial coverage over an area. If it looks like there will be an area with very widely spaced showers, we'll give it 10%-30%, or a slight chance. If it looks like the coverage is going to be greater, you'll see that higher percentage in the forecast. When you see 80%-100% in the forecast, you can pretty much guarantee that the whole area which that forecaster is working for will see rain.
Hope that helps!
2006-07-08 08:19:24 · answer #2 · answered by Jeff L 3 · 0⤊ 0⤋
1. From the rain fall data of past at least 10 years.
2. From the cloud mass observed in the satellite images.
3. In olden days, in TAMIL NADU (INDIA), based on the Tamil Saying - "Thattaan poochchi thaazha paranthaal thappaamal mazhai peyyum" = "If the swarm of dragon fly flies very close to the ground, it will rain definitely" the rain is predicted.
2006-07-14 20:46:35 · answer #3 · answered by K.J. Jeyabaskaran K 3 · 0⤊ 0⤋
Its a personal number really. Each weather model shows somethign different. And its based on the weather forecaster's opinion and knowledge on how likely rain is based on conditions and the models.(A GOOD forecaster doesnt always rely just on the models, its often a deadly mistake). But it isn't too tough, with expierence and knowledge.
2006-07-08 18:51:37 · answer #4 · answered by Joe 2 · 0⤊ 0⤋
This rather sucks. somebody needs to do an "anti"rain dance or some thing... I neglected the Busch race 'cos it became too early for me on a Saturday (6am?). Now the Cup race will probable be rained out and fully ruin my day!
2016-12-08 17:15:44 · answer #5 · answered by ? 4 · 0⤊ 0⤋
They use instruments to determine the percentage out of 100 if it will rain.
I'd like to know the complete answer, because they're usually wrong!
2006-07-08 07:01:57 · answer #6 · answered by miss_gem_01 6 · 0⤊ 0⤋
the likelyhood of rain is determined by measuring temp and pressure of air mass systems which indicate if there will be uplifting of air masses - as air rises water cools condenses and falls
2006-07-08 16:27:49 · answer #7 · answered by limetemple 2 · 0⤊ 0⤋
its predicted in percentages like 50% chance of rain
2006-07-19 23:46:29 · answer #8 · answered by scoutii4x42000 1 · 0⤊ 0⤋
well I know they have certain intruments to predict the rain. But I am not quite sure of it
2006-07-20 14:52:04 · answer #9 · answered by nuwanusa 5 · 0⤊ 0⤋
they see if the humidity is 100 percent if it is it will rain
2006-07-08 07:02:34 · answer #10 · answered by Sams 2 · 0⤊ 0⤋