From one of the typhoon watch sites: (what goes through Phils may well come here)
"There are three (3) past seasons since 1980 showing similarities on the El NiÃ±o/Southern Oscillation (ENSO) & Madden-Julian Oscillation (MJO) Indices. These are namely the 1988, 1995, and 1998 Seasons [Fig. 1]. The typhoon activity in 1988and 1995 were normal during the start of the active season (June to July),however, 1998 was somewhat unique because the first Philippine tropical cyclone formed later than usual, July 8 by the name of AKANG (see 1998 Season). That '98 event was very similar to this years' 2010 Philippine typhoon season. Although the first Philippine TC, by the name of AGATON (OMAIS), developed during the peak of the El NiÃ±o (dry) event in March 2010, it was followed by BASYANG (CONSON) on July
11 - about four months later.
Although not exactly the same, this 2010 Season will be worth watching especially during the last quarter. The similarities of the last quarter trend during an El NiÃ±o event shifting to La NiÃ±a are alarming as past data reveal destructive typhoons landfalling and crossing the Philippines, particularly over Luzon and Visayas. This pattern has been observed using the MJO Indices of 1988, 1995, & 1998. In 1988, Typhoons UNSANG (RUBY) and YONING (SKIP) crossed Central Luzon and Visayas respectively; while in 1995, Typhoon PEPENG (ZACK) crossed the Visayas and Super Typhoon ROSING (ANGELA) caused extreme destruction upon crossing Bicol Region, Southern Tagalog Provinces, Central Luzon including Metro Manila; then finally in 1998, two (2) Super Typhoons: ILIANG (ZEB) crossed Northern Luzon and followed in just a couple of days by LOLENG (BABS) traversing Southeastern & Central Luzon in a slow pace. Now, looking at these destructive typhoons,
all of them took place between October 01 to November 30"