Extended Range Tornado Activity Forecasts (ERTAF)
ERTAF 2017 has concluded!
An information page with explanation of
statistics below can be found here.
|
FCSTDATE |
FCST2START |
FCST2END |
FCST3START |
FCST3END |
CLIMO2 |
CLIMO3 |
ACT2 |
ACT3 |
PN2 |
PN3 |
ACT2C |
ACT3C |
FCST2 |
FCST3 |
VERF2 |
VERF3 |
| 3/5/2017 | 3/12/2017 | 3/18/2017 | 3/19/2017 | 3/25/2017 | 16.1 | 12.7 | 1 | 12 | 6% | 100% | BA | A | A | A | 0 | 1 |
| 3/12/2017 | 3/19/2017 | 3/25/2017 | 3/26/2017 | 4/1/2017 | 12.7 | 23.7 | 12 | 56 | 100% | 236% | A | AA | AA | AA | 0 | 1 |
| 3/19/2017 | 3/26/2017 | 4/1/2017 | 4/2/2017 | 4/8/2017 | 23.7 | 28.8 | 56 | 72 | 236% | 250% | AA | AA | AA | AA | 1 | 1 |
| 3/26/2017 | 4/2/2017 | 4/8/2017 | 4/9/2017 | 4/15/2017 | 28.8 | 37.3 | 72 | 21 | 250% | 56% | AA | BA | AA | BA | 1 | 1 |
| 4/2/2017 | 4/9/2017 | 4/15/2017 | 4/16/2017 | 4/22/2017 | 37.3 | 35.8 | 21 | 11 | 56% | 31% | BA | BA | A | BA | 0 | 1 |
| 4/9/2017 | 4/16/2017 | 4/22/2017 | 4/23/2017 | 4/29/2017 | 35.8 | 52.9 | 11 | 25 | 31% | 25% | BA | BA | BA | BA | 1 | 1 |
| 4/16/2017 | 4/23/2017 | 4/29/2017 | 4/30/2017 | 5/6/2017 | 52.9 | 50.2 | 25 | 62 | 25% | 123% | BA | A | BA | A | 1 | 1 |
| 4/23/2017 | 4/30/2017 | 5/6/2017 | 5/7/2017 | 5/13/2017 | 50.2 | 60.6 | 62 | 40 | 123% | 66% | A | BA | BA | A | 0 | 0 |
| 4/30/2017 | 5/7/2017 | 5/13/2017 | 5/14/2017 | 5/20/2017 | 60.6 | 49 | 40 | 122 | 66% | 249% | BA | AA | BA | A | 1 | 0 |
| 5/7/2017 | 5/14/2017 | 5/20/2017 | 5/21/2017 | 5/27/2017 | 49 | 59 | 122 | 61 | 249% | 103% | AA | A | AA | AA | 1 | 0 |
| 5/14/2017 | 5/21/2017 | 5/27/2017 | 5/28/2017 | 6/3/2017 | 59 | 63 | 61 | 14 | 103% | 14% | A | BA | A | A | 1 | 0 |
| 5/21/2017 | 5/28/2017 | 6/3/2017 | 6/4/2017 | 6/10/2017 | 63 | 61.7 | 14 | 19 | 14% | 19% | BA | BA | A | AA | 0 | -1 |
| 5/28/2017 | 6/4/2017 | 6/10/2017 | 6/11/2017 | 6/17/2017 | 61.7 | 56.7 | 19 | 72 | 19% | 127% | BA | AA | A | AA | 0 | 1 |
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All tornado report data is from the Storm Prediction Center and should be considered preliminary pending final review. |
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Verification Legend |
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-1 |
0 |
1 |
|
More than 50%
of Normal Error |
No More than
50% of Normal Error |
Correct % of Normal
Threshold |
An information page with explanation of column headers can be found here.
Contributors: John Allen | Brad Barrett | Victor Gensini | David Gold | Alan Marinaro | Paul Sirvatka | Mike Ventrice