venture
04-26-2012, 01:50 PM
Breaking away from our normal discussion, this is more generalized over years. This information is from the SPC at: http://www.spc.noaa.gov/wcm/. I'm just going to start at the top of the page and work down discussing it. I'll add a few images here to highlight some stuff.
First part is the tornado for April. We are sitting around 130 so far nationally which is right on our 60 year average. A huge difference from the major record breaking April last year of 758 tornadoes which beat the previous record of 264 (Super Outbreak of 74). Overall trend does show tornadoes increasing during April. Whenit comes to strong tornadoes (EF2+) we are at 17 now which is below average of 36. Last year we had 166 which beat the Super Outbreak in '74 that had 157. The trend here is that strong tornadoes are on a decrease in April.
The next part hit on the High Risk April 14th outbreak. It is pretty amazing how well their forecast did so far out.
http://www.spc.noaa.gov/wcm/2012/outlooks-dy8-dy1.png
Looking at the graphic the northern and extreme southern portions of the high risk didn't verify, but the central part definitely did. All in all, can't really criticize the forecast that much. They nailed an outbreak coming several days out and that is tough to do.
2011 Tornado Summary Maps
This really put last year in perspective. Six EF5s and they show up very well on this map.
http://www.spc.noaa.gov/wcm/2011-jan-dec.png
Average Number of Tornadoes
30 Year Average: 57 (4th) ; 20 Year Average: 62 (3rd) ; 10 Year Average: 54 (8th)
Average Tornado Deaths
30 Year - 3 (tied 6th) ; 20 Year - 4 (tied 4th) ; 10 Year - 2 (tied 10th)
Average Tornadoes per 10K square miles: 9 - ranking us tied for 3rd
Number of tornadoes per county...
http://www.spc.noaa.gov/wcm/ustormaps/tornadoes-by-county.png
Annual Tornado Maps Checkout: http://www.spc.noaa.gov/wcm/annualtornadomaps/
There you can see how things setup each year. Some are very focused in specific regions and others are very evenly spread. Central OK has really been a major focus since 2003/2004.
Running Totals for the Year - so far we are ahead of the curve and above average. Something to keep in mind as we are in peak season now.
http://www.spc.noaa.gov/wcm/ptorngraph.png
Another set over interesting maps...
http://www.spc.noaa.gov/wcm/2011-wbc-anoms.png
http://www.spc.noaa.gov/wcm/2010-wbc-anoms.png
http://www.spc.noaa.gov/wcm/2009-wbc-anoms.png
http://www.spc.noaa.gov/wcm/10ytora.gif
http://www.spc.noaa.gov/wcm/10ysvra.gif
First part is the tornado for April. We are sitting around 130 so far nationally which is right on our 60 year average. A huge difference from the major record breaking April last year of 758 tornadoes which beat the previous record of 264 (Super Outbreak of 74). Overall trend does show tornadoes increasing during April. Whenit comes to strong tornadoes (EF2+) we are at 17 now which is below average of 36. Last year we had 166 which beat the Super Outbreak in '74 that had 157. The trend here is that strong tornadoes are on a decrease in April.
The next part hit on the High Risk April 14th outbreak. It is pretty amazing how well their forecast did so far out.
http://www.spc.noaa.gov/wcm/2012/outlooks-dy8-dy1.png
Looking at the graphic the northern and extreme southern portions of the high risk didn't verify, but the central part definitely did. All in all, can't really criticize the forecast that much. They nailed an outbreak coming several days out and that is tough to do.
2011 Tornado Summary Maps
This really put last year in perspective. Six EF5s and they show up very well on this map.
http://www.spc.noaa.gov/wcm/2011-jan-dec.png
Average Number of Tornadoes
30 Year Average: 57 (4th) ; 20 Year Average: 62 (3rd) ; 10 Year Average: 54 (8th)
Average Tornado Deaths
30 Year - 3 (tied 6th) ; 20 Year - 4 (tied 4th) ; 10 Year - 2 (tied 10th)
Average Tornadoes per 10K square miles: 9 - ranking us tied for 3rd
Number of tornadoes per county...
http://www.spc.noaa.gov/wcm/ustormaps/tornadoes-by-county.png
Annual Tornado Maps Checkout: http://www.spc.noaa.gov/wcm/annualtornadomaps/
There you can see how things setup each year. Some are very focused in specific regions and others are very evenly spread. Central OK has really been a major focus since 2003/2004.
Running Totals for the Year - so far we are ahead of the curve and above average. Something to keep in mind as we are in peak season now.
http://www.spc.noaa.gov/wcm/ptorngraph.png
Another set over interesting maps...
http://www.spc.noaa.gov/wcm/2011-wbc-anoms.png
http://www.spc.noaa.gov/wcm/2010-wbc-anoms.png
http://www.spc.noaa.gov/wcm/2009-wbc-anoms.png
http://www.spc.noaa.gov/wcm/10ytora.gif
http://www.spc.noaa.gov/wcm/10ysvra.gif