cloud seeding

Weather Modification
(Rain enhancement, and hail
and lightning suppression)


Below is a checklist of Weather-modification themes on postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.). Catalog numbers, years of issue, and notes on the items featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

See also the following Contributors to Meteorology involved in weather modification:

CountryCatalog NumberType of ItemYear of IssueNotes on Content
Weather modification
Botswana394 (Mi393)1987Lightning prevention (traditional medicine)
Botswana395 (Mi394)Rain making (traditional medicine)
Botswana393-396 fdcTwo of four stamps on FDCWeather modification (traditional medicine)
CanadaNone(Meteor. returns) postal card, also back1959Meteorological return card for hailfall (part of the Alberta Hail Project, whose goal was hail suppression through weather modification by cloud seeding)
Chad837 (Mi?)1999Chac-Mool2
China (People's Republic)1388 (Mi1398)1978Weather modification by rocket
China (People's Republic)1384-1388 fdcOne of five stamps on FDC
China (People's Republic)3069 (Mi2197)2000Cloud-seeding aircraft for rain enhancement project
China (People's Republic)3066-3069 fdc1One of four stamps on FDC, also back
China (People's Republic)3066-3069 fdc2One of four stamps on FDC (different)
China (People's Republic)NonePostal card, also detail2007Hail reduction by cloud seeding (translation from Chinese) (by rockets carrying the cloud-seeding material)
China (People's Republic)NonePostal card (different)2009Rockets for cloud seeding; Duerbote County Meteor. Bureau
Comoro Islands392 (BL183A)
i392 (BL183B)
In (right) margin of SS1
In (right) margin of imperforate SS1
1978(possible) African rainmaker
ItalyNonePostcardpost-WWIIHail suppression by rocket
Japan2934 (Mi3895)Five of MS10 (2935a (5x (2934-2935)))2005Ono no Komachi4; (see also Sierra Leone 2459)
Kenya, Uganda, and Tanzania261 (Mi249)1973Hail suppression by meteorological rocket
Kenya, Uganda, and Tanzania259-262 fdc1One of four stamps on FDC (Dar-es-Salaam, Tanzania cancel)
Kenya, Uganda, and Tanzania259-262 fdc2One of four stamps on FDC (Kampala, Uganda cancel)
Kenya, Uganda, and Tanzania259-262 cardPresentation card
LaosC9 (Mi36)1953Calling for Rain Buddha: Used in ceremonies at the end of the dry season to invite the rains back to Laos
LaosC9 proofSigned proof
Laos121 (Mi?)1966Rocket festival: at the end of the dry season, bamboo rockets built and decorated by monks and villagers are carried in procession and then fired into the sky to inform the rain god Phaya Thaen that it is time to bring the rains back to Laos.
Laos121 dsDeluxe sheet (121)
LaosC105 (Mi362)1973Rocket festival: at the end of the dry season, bamboo rockets built and decorated by monks and villagers are carried in procession and then fired into the sky to inform the rain god Phaya Thaen that it is time to bring the rains back to Laos.
Laos1227 (Mi1465)1995Rocket festival: at the end of the dry season, bamboo rockets built and decorated by monks and villagers are carried in procession and then fired into the sky to inform the rain god Phaya Thaen that it is time to bring the rains back to Laos.
Laos1228 (Mi1466)
Laos1229 (Mi1467)
Laos1230 (Mi1468)
Laos1602 (BL192, Mi1903)
i1602
SS1
Imperforate SS1
2003Calling for Rain Buddha: Used in ceremonies at the end of the dry season to invite the rains back to Laos
Laos1602 fdcStamp and (multi-color printed) cachet (design like stamp) on FDC
LiberiaMi2903From MS17 (Mi2893-2909 + label), also margin detail2000(Charles) Wilson's cloud chamber1
LiberiaMi2907Photograph from (Charles) Wilson's cloud chamber1
Mexico1210 (Mi1723)1980Chac-Mool2
Mexico1210 fdcStamp on FDC
Mexico1210 scStamp and (French) text on souvenir card
MexicoKM5721 peso (coin)1994Chac-Mool2
MexicoKM5732 peso (coin)
MexicoKM5745 peso (coin)
Mexico2543dOne of MS5 (2543 (a-e))2007Chac-Mool2
Mexico2543c-d fdcOne of two stamps on FDC
Niuafo'ou (Tonga)101 (Mi?)1988Rainmaker Mountain, Samoa
Romania5441 (Mi?)From MS6 (5441a (6x 5441))2013First artificial rain experiment, based on the work of Ştefania Mărăcineanu
Romania5441-5443 fdcOne of three stamps and (brown printed) cachet on FDC
RomaniaNoneStamped envelope2013First artificial rain experiment, based on the work of Ştefania Mărăcineanu
Russia (USSR)None(Pictorial) cancel and (multi-color printed) cachet on postal card1984Weather modification rockets in launcher
Russia (USSR)NoneCachet (same) on postal card1984Weather modification rockets in launcher
Sierra Leone2459 (BL?)SS12001(Ono no) "Komachi4 Praying for Rain", woodblock print by Suzuki Harunobu, from the early 1760s; see also Japan 2934
South Africa1236 (Mi1322)2001In times of drought, the medicine men of the Xam Bushmen would find a "rain bull" (or its female equivalent, the rain cow) in a pool of water and attach a rope to its horns and pull it out. The belief was that wherever the bull went, rain would follow, so it was led over as large an area as possible to bring rain to that area. That belief comes from the legend of Savuri and the Rain Bull.
South Africa1236-1240 fdcOne of five stamps on FDC
Thailand1054 (Mi1081)1984Artificial rainmaking through addition of silver iodide smoke to the atmosphere in agricultural areas as part of the Thai National Development Program.
Thailand1671 (Mi1714?)One of MS5 (1673a (1669-1673 + label))1996Royal rainmaking project3: airplane seeding clouds
Thailand1669-1673 fdcOne of five stamps on FDC, also detail on back
United Nations79 fdc (Mi? fdc)(ArtCraft) cachet on FDC1960Acetone burner
United States1919 fdc (Mi1488 fdc)(PCS golden-replica) insert from FDC, also front1981"applications to bettering life on Earth, such as weather management"

1(Charles) Wilson's cloud chamber was used to investigate certain atmospheric and cloud phenomena. Some of the results of the cloud chamber experiments later found application in the theory of cloud seeding and weather modification.
2Chac-Mool is the name given to a particular type of Mesoamerican stone statue found in various parts of central America, sometimes in temple complexes. It is recognizable as a reclining human figure with the head turned to one side and a flat bowl or tray on its stomach. The name was coined by photographer Augustus le Plongeon after he excavated one at Chichen Itza in 1875. Chac-Mool is not to be confused with the Mayan god of rain and thunder Chaac. The cultural significance of Chac-Mool is not known. It may have been a divinity related to water or rain and it has been speculated that people might have placed coins (or other objects?) into the bowl as an offering and a request for rain.
3King Bhumibol Adelyadej (depicted in all the stamps of Thailand 1669-1673) has been involved with the rainmaking project since the 1950s. The first field operations took place in 1969 in Khao Yai National Park. Since then the King has continued to develop the technique, for which he received in 2005 a European Union patent under the name "Weather Modification by Royal Rainmaking Technology".
4Ono no Komachi (ca 825-900) was a Japanese poetess. Legend has it that she lived during a severe and prolonged drought. At long last she composed a prayer for rain in the form of a poem written on a card which she put into a miniature boat. She then released the boat into a pond in the Imperial Garden. That scene is illustrated in a woodblock print from the early 1760s by Suzuki Harunobu, (Ono no) Komachi Praying for Rain, which is reproduced in Sierra Leone 2459. Thanks to the power of Komachi's poetry, the rain started and continued for three days. Harunobu's print shows the rain already falling, even as Komachi is pushing her little vessel away from the shore.


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