2009 Pacific typhoon season
Seasonal forecasts

TSR forecasts Date
Tropical storms
Total Typhoons
Intense TCs
ACE Index
Ref
Average (1965–2008)
26.6
16.7
8.6
300
-
March 16, 2009
25.6
16.0
6.7
247
-
May 7, 2009
27.5
17.6
9.1
319
-
July 6, 2009
28.0
18.1
10.3
359
-
August 4, 2009
26
18.2
10.6
367
-
Other forecasts Date
Forecast Center
Tropical storms
Total Typhoons
Ref
-
June 30, 2009
CWB
24–27
–
-
-
Actual activity
JMA
22
13
-
-
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.