| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | 2009 Pacific typhoon season - Seasonal forecasts |  |  |  |  |  |
| 3 | TSR forecasts Date | Tropical storms | Total Typhoons | Intense TCs | ACE Index | Ref |
| 4 | Average (1965–2008) | 26.6 | 16.7 | 8.6 | 300 | - |
| 5 | March 16, 2009 | 25.6 | 16.0 | 6.7 | 247 | - |
| 6 | May 7, 2009 | 27.5 | 17.6 | 9.1 | 319 | - |
| 7 | July 6, 2009 | 28.0 | 18.1 | 10.3 | 359 | - |
| 8 | August 4, 2009 | 26 | 18.2 | 10.6 | 367 | - |
| 9 | Other forecasts Date | Forecast Center | Tropical storms | Total Typhoons | Ref | - |
| 10 | June 30, 2009 | CWB | 24–27 | – | - | - |
| 11 | Actual activity | JMA | 22 | 13 | - | - |
| 12 | Actual activity | JTWC | 24 | 15 | - | - |

Question: On What date did the TSR increase its forecast of tropical storms to 27.5?
Answer: On May 7, TSR increased its forecast to 27.5 tropical storms, 17.6 typhoons and 9.1 "intense" typhoons in 2009.