posted on Apr, 26 2011 @ 09:26 AM
OP: Thanks for creating such a thread, since we have been having quite a month with severe wx. I would like to contribute some things that are in the
perspective of someone in the actual field of chasing or spotting. This could help add things on a more factual/scientific basis as well as give
people an idea of how severe wx forecasting works. If you do not mind of course =)
Storm Prediction Center
- This is square one for an idea of what is going on on a day and for the next two days out.
The above map shows the categorical outlook of severe weather on the day in question. The times are always expressed in "Z" which is UTC/GMT etc..
its a pretty basic look at what places are to have severe weather and the chances (risk) for such.
Then we have map links to the probability maps for Tornadoes, Wind and Hail. These are expressed in percent values. To break down how this works: say
you are in a 2% risk for tornadoes. That would mean there is a 2% chance of a tornado within 25 miles of your current location as long as you are in
that covered area. unless you travel into higher risk areas
For more info on SPC and its particulars regarding its products and such you can visit this helpful writeup.
About SPC Products
I will add more later but this is a good basic place to start.
Also to anyone in tornado alley or any place that is affected by severe weather, it might be a good idea to take a Skywarn class if you can. Also do
NOT go out trying to be Reed Timmer if you don't know what you are doing! Safety is number 1.
For the record, I do not work for NOAA or the SPC or NWS.