IWIC Verification Comparisons 2003-2006
IWIC has had a slight edge in overall accuracy over each of the three primary seasonal forecasting agencies since IWIC seasonal forecasting began in 2003.
Comparison of May 2006 Atlantic Hurricane Season Forecasts
| Category |
IWIC |
TSR |
NOAA |
CSU |
Actual |
| NS |
14 |
14.6 |
13-16 |
17 |
10 |
| H |
8 |
7.9 |
8-10 |
9 |
5 |
| MH |
4 |
3.6 |
4-6 |
5 |
2 |
Comparison of May 2005 Atlantic Hurricane Season Forecasts
(Offseason formations not included)
| Category |
IWIC |
TSR |
NOAA |
CSU |
Actual |
| NS |
15 |
13.9 |
12-15 |
15 |
27 |
| H |
8 |
7.8 |
7-9 |
8 |
15 |
| MH |
4 |
3.6 |
3-5 |
4 |
7 |
Comparison of May 2004 Atlantic Hurricane Season Forecasts
| Category |
IWIC |
TSR |
NOAA |
CSU |
Actual |
| NS |
14 |
12.6 |
12-14 |
14 |
15 |
| H |
8 |
6.8 |
6-8 |
8 |
9 |
| MH |
4 |
2.7 |
2-4 |
3 |
6 |
Comparison of May 2003 Atlantic Hurricane Season Forecasts
(Offseason formations not included)
| Category |
IWIC |
TSR |
NOAA |
CSU |
Actual |
| NS |
13 |
12.4 |
11-15 |
14 |
13 |
| H |
7 |
7.0 |
6-9 |
8 |
7 |
| MH |
3 |
2.8 |
2-4 |
3 |
3 |