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by teamj from Houston/Cypress

Last Post 487 days, 20 hours Ago


What does 20% chance of rain mean?
May 2, 2007 | 8:48 PM
Category: Weather
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Does 20% chance for rain mean that:

1.  it will rain 20% of the day;

2.  20% chance it will rain;

3.  20% chance that the viewing area will get rain;

or none of the above?   Can a meteorologist chime in and tell me what it means?

10 Comments |  Add a Comment

Member Comments Total Comments: 10
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stormchaser06 read my blog view my photos
May 3, 2007 | 12:31 AM

Funny you should ask, Mike wrote a blog about that very subject a couple of weeks ago. Here's a link to it:

http://community.myfoxhouston.com/blogs/Isci_the_Weathe
rman/2007/04/18/What_does_X_chance_of_rain_mean
Isci_the_Weatherman read my blog view my photos
May 3, 2007 | 5:46 AM

Thanks stormchaser, you took the words right out of my mouth.
stormchaser06 read my blog view my photos
May 3, 2007 | 6:55 AM

Hope I didn't step on any toes....
Hala read my blog view my photos
May 3, 2007 | 8:09 AM

It means that there is an 80% chance that it won't rain.
hibberd read my blog view my photos
May 3, 2007 | 1:06 PM

It seems as though there's always a 20% chance of rain in Houston!!

Ned
yahyamoro read my blog
May 3, 2007 | 1:27 PM

IT MEANS THERE IS AN 80 % CHANCE OF SNOW , TORNADO OR METEOR SHOWER TO OCCUR ...
warriorray read my blog view my photos
May 3, 2007 | 11:07 PM

why is there never a 2% 0r a 13% chance of rain. you never see numbers like that on the rain chance in the forecast.
Isci_the_Weatherman read my blog view my photos
May 4, 2007 | 5:27 AM

Ha! Sometimes even the difference between 20% and 30% is trivial so I'd hate to explain the difference between 21% and 23%.
mwilson read my blog view my photos
May 4, 2007 | 3:41 PM

It means you probably shouldn't worry about packing your umbrella for the day! ;)
scottw663 read my blog
May 6, 2007 | 10:04 AM

Im pretty sure it means, That there is a 20% chance of rain, but only 40% chance of it actually happening in 30% of the city, and only 9% of the viewers will notice that 1% of the rain will include either hail or frogs. I think that adds up to 100% of the odds.
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teamj

Born & raised in Houston. Married to a great guy for 8 years and we have a free-spirited dog named Bonnie.

Member Since: 3/26/2007


 

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