Storm signal no. 4 in PH history

Michael Bueza
Since 1991, there have been 14 previous instances when Signal No. 4 was raised in the country

MANILA, Philippines (UPDATED) – Typhoon Yolanda (international codename Haiyan) continues to intensify as it approaches the Philippines, and is expected be a very destructive super typhoon.

It triggered the announcement of Public Storm Warning Signal Number 4 over eastern Visayas on Thursday, November 7. This is the first time the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) hoisted Signal No. 4 outside Luzon.

The term “Signal No. 4” was first used by PAGASA only 22 years ago.

Originally, the weather bureau’s public storm warning system was up to Signal No. 3 only, hoisted over areas expected to be hit by winds exceeding 100 kilometers per hour.

To classify more powerful storms that carry very strong winds, PAGASA created a 4th warning signal in 1991.

DESTRUCTION. Powerful typhoons have caused floods and loss of lives in the past. AFP file photos

In the current system, an area expected to be hit by a storm with winds 185 km/h and above in the next 12 hours would be placed under Public Storm Warning Signal No. 4.

For Signal Numbers 1 to 3, the following conditions should be met:

  • Signal number 1 – winds of 30 to 60 km/h is expected in the next 36 hours
  • Signal number 2 – winds of 61 to 100 km/h is expected in the next 24 hours
  • Signal number 3 – winds of 101 to 185 km/h is expected in the next 18 hours

Below is a list of 14 previous storms since 1991 that prompted the hoisting of Public Storm Warning Signal No. 4.

Typhoon (with
international name)
Maximum Wind Speed (JWTC data)Areas Placed Under
Signal #4
Aftermath
Trining (Ruth)
Oct 24 to 31, 1991 
215 km/h Batanes
Calayan & Babuyan group of islands
northern Cagayan 
83 dead
22 missing
55 injured
P3.719-B worth of damage
Goring (Koryn)
Jun 23 to 27, 1993 
195 km/h Isabela
Aurora
Quirino 
51 dead
5 missing
109 injured
P2.775-B worth of damage 
Rosing (Angela)
Oct 30 to Nov 4, 1995 
215 km/h Camarines Norte
Camarines Sur
Catanduanes
northern Albay
Quezon (including Polillo Islands)
Rizal
Metro Manila
Southern Tagalog provinces
Lubang Island
Bataan
Bulacan
936 dead
376 missing
4,152 injured
P10.799-B worth of damage 
Iliang (Zeb)
Oct 11 to 16, 1998 
205 km/h Batanes
Cagayan
Isabela
northern Aurora
Quirino
46 dead
29 missing
63 injured
P5.375-B worth of damage 
Loleng (Babs)
Oct 15 to 25, 1998 
155 km/h Catanduanes 303 dead
29 missing
751 injured
P6.787-B worth of damage 
Harurot (Imbudo)
Jul 19 to 23, 2003 
165 km/h Cagayan
Isabela
northern Aurora 
64 dead
2 missing
154 injured
P3.234-B worth of damage 
Igme (Mindulle)
Jun 25 to Jul 2, 2004 
175 km/h Batanes
Calayan & Babuyan group of islands
northern Cagayan
Apayao
Ilocos Norte 
55 dead
20 missing
47 injured
P2.447-B worth of damage 
Yoyong (Nanmadol)
Dec 1 to 4, 2004 
165 km/h Isabela
Aurora
Quirino
northern Quezon (including Polillo Islands)
Camarines Norte
Catanduanes 
73 dead
24 missing
168 injured
P560.829 M worth of damage 
Paeng (Cimaron)
Oct 27 to 31, 2006
185 km/h southern Cagayan
Isabela
Quirino
northern Aurora 
32 dead
23 missing
62 injured
P1.292-B worth of damage 
Queenie (Chebi)
Nov 8 to 12, 2006 
185 km/h Isabela
Aurora
Quirino 
1 dead
10 injured
no significant damage caused 
Reming (Durian)
Nov 28 to Dec 3, 2006 
195 km/h southern Quezon
Camarines Norte
Camarines Sur
Catanduanes
Albay (including Burias Island)
Marinduque 
734 dead
762 missing
2,360 injured
P5.448-B worth of damage 
Juan (Megi)
Oct 15 to 21, 2010 
230 km/h Cagayan
Isabela
Ifugao
Mountain Province 
31 dead
4 missing
42 injured
P11.528-B worth of damage 
Mina (Nanmadol)
Aug 21 to 29, 2011 
185 km/h Calayan & Babuyan group of islands
northern Cagayan 
36 dead
8 missing
37 injured
P2.089-B worth of damage 
Odette (Usagi)
Sept 16 to 21, 2013 
205 km/h Batanes 3 dead
2 missing 
P60-M worth of damage (agricultural crops only) 


– Rappler.com

Sources: PAGASA, Joint Typhoon Warning Center (JWTC), Wikipedia, gov.ph, philstar.com

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Michael Bueza

Michael is a data curator under Rappler's Tech Team. He works on data about elections, governance, and the budget. He also follows the Philippine pro wrestling scene and the WWE. Michael is also part of the Laffler Talk podcast trio.