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FOURTEENTH CONGRESS OF THE REPUBLIC) 
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Second Regular Session 
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SENATE 
S.B.No. 3250 
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Introduced by Senator Miriam Defensor Santiago 
EXPLANATORY NOTE 
Weather modification is the act of manipulating or altering certain aspects of the 
environment to produce desirable changes in weather. 
A good example of weather modification or control is the rain dispersal operation 
undertaken by China for the 2008 Beijing Olympics. The Beijing Municipal Meteorological 
Bureau fired a total of 1,104 rain dispersal rockets within an eight-hour period prior to and ruing 
the opening ceremonies of the Olympic Games in August 8, 2008. The rockets were launched 
from 21 sites, and may have prevented the ceremonies from receiving rainfall in the range of 25 
to 100 millimeters of rain. 
In the Philippines, cloud seeding is undertaken by the Philippine Atmospheric, 
Geophysical and Astronomical Services Administration (PAGASA) during times of drought. In 
2007, President Gloria Macapagal-Arroyo ordered the release of P28 million for cloud seeding 
operations to reduce damage from a dry spell that was hurting Luzon. Cloud seeding activities 
are also undertaken in the country by private firms. 
This bill requires persons undertaking weather modification activities to provide 
information on such activities. 


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FOURTEENTH CONGRESS OF THE REPUBLIC) 
OF THE PHILIPPINES 
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Second Regular Session 
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SENATE 
S.B. No. 
MliY 1s P3 :03 
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BY : __ 
Introduced by Senator Miriam Defensor Santiago 
AN ACT 
TO REQUIRE INFORMATION ON WEATHER MODIFICATION ACTIVITIES 
Be it enacted by the Senate and the House of Representatives of the Philippines in 
Congress assembled: 
SECTION 1. Short Title. - This Act shall be known as the “Weather Modification 
Information Act.” 
SECTION 2. Definitions. - In this Act, the term 
(a) “Administrator” refers to the Administrator of the Philippine Atmospheric, 
Geophysical and Astronomical Services Administration (PAGASA); 
(b) “weather modification activity” includes any action designed or intended to produce, 
by physical or chemical means, changes in the composition or dynamics of the 
atmosphere for the purpose of increasing, decreasing or redistributing precipitation, 
decreasing or suppressing hail or lightning, or dissipating fog or cloud. 
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SECTION 3. Information. - (a) Where any person proposes to engage in weather 
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modification activities in any part of the Philippines, that person shall, in such form and manner 
as may be prescribed, submit to the Administrator such information as may be prescribed 
respecting that person and the weather modification activities in which it is proposed to engage. 
(b) Before commencing any weather modification activity, the person proposing to carry 
out the activity shall inform the Administrator in writing of 
(i) the date and time when and the place where the activity is to be carried out; 
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(ii) the names and addresses of the persons by and for whom the activity is to be carried 
(iii) the purpose of the activity; 
(iv) the equipment, materials and method to be used; and 
(v) the geographic area that may be affected. 
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SECTION 4. Records and Repouts. - (a) Every person who carries out any weather 
modification activity shall, in such form and manner as may be prescribed, maintain a daily 
record of the activity, in which shall be included detailed information relating to 
(i) the location and operation of any equipment used; 
(ii) any meteorological observations made in the geographic area affected or intended to 
be affected by the activity; and 
(5) the chemical nature, physical properties, and quantities of any substances emitted 
into the atmosphere for the purposes of weather modification. 
(b) The person who carries out any weather modification activity shall within fifteen days 
from the end of the month in which the activity was carried out, submit to the Administrator a 
report specifying 
(i) the date when the activity was carried out; 
(ii) the nature and scope of the activity; 
(iii) any meteorological observations that were made; and 
(iv) such other information and observations relevant to the activity as may be specified 
by the Administrator or an authorized representative of the Administrator. 
(c) Any person who has custody of a record referred to in paragraph (a) shall, at such 
reasonable times as may be specified by the Administrator or an authorized representative of the 
Administrator, make that record available for inspection by the Administrator or the 
representative. 
SECTION 5. Disclosure. - Any information obtained by the Administrator or an 
authorized representative of the Administrator pursuant to this Act may be made public or made 
available on request to any member of the public. 
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SECTION 6. Regulations. - The Secretary of Science and Technology may make 
regulations prescribing any matter or thing that by this Act may be prescribed. 
SECTION 7. Offense and Punishment. - (a) Any person who fails to comply with any 
provision of this Act is guilty of an offense and liable on conviction by summary proceedings to 
a fine not exceeding ten thousand pesos or to imprisonment for a term not exceeding six months 
or to both. 
(b) Where any corporation commits an offense under this Act, any officer, director, or 
agent of the corporation who directed, authorized, assented to, or acquiesced in the commission 
of the offense is a party to and guilty of the offense and is liable on conviction by summary 
proceedings to the punishment provided by subsection (a) whether or not the corporation has 
been prosecuted or convicted. 
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modified accordingly. 
SECTION 8. Repealing Clause. - All laws, decrees, orders, rules and regulations, or 
parts thereof inconsistent with the provisions of this Act are hereby repealed, amended, or 
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Approved, 
SECTION 9. Effectivity Clause. - This Act shall take effect after fifteen (15) days 
following its publication in the Oficial Gazette or in two (2) newspapers of general circulation. 
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