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The CHy-Ext.(2019) Pre-session discussion forum is now closed for commenting. 

Follow TECO-Hydro and CHy-Ext.(2019) Live streaming from 11 to 14 February 2019 

The Extraordinary session of the Commission for Hydrology (CHy-Ext.(2019)) will be held in Geneva (Switzerland), on 13 February (p.m.) and 14 February 2019. It will be preceded by a Technical Conference (TECO-Hydro) held from 11 to 13 (a.m.) February 2019 at the same venue. 

paperless.pngDocuments for both meetings

Documents will be posted before and during the session on the session website, in line with WMO greening efforts to promote paper-smart meetings. Therefore, participants are kindly invited to bring internet-enabled portable computers capable of handling Microsoft Word 2010 and Adobe PDF formats so that they can work in paper-smart mode during the session.

Draft ToR of the WMO Hydrological Assembly (prepared by the AWG)

Select your language:


The same documents will be discussed at TECO-Hydro and CHy-Ext.(2019).  In TECO-Hydro there will be an open technical discussion where all details of the WMO reform in general and the alternatives for hydrology and water resources in particular will be explained and debated. Then, in CHy-Ext.(2019) decisions will be agreed among all delegations and recorded in Recommendations to 18th Congress. It is therefore strongly recommended that participants attend both meetings.

All background information will be available in the form of Information documents 2 and 3, to be downloaded in six languages from the "Information Documents" tab above. Recommendations will be recorded as Documents 2 and 3 to be downloaded from the "Document" tab in their respective language.

information.pngInformation and registration desk

Online pre-registration to CHy-Ext.(2019) and TECO-Hydro is strongly recommended.

Pre-registered participants for the TECO-Hydro and CHy-Ext.(2019) will be able to pick up their identification badges at the registration desk already on Sunday, 10 February 2019, from 4 to 6 p.m. Registration desk will remain open throughout the session.

Venue: WMO headquarters building, 7 bis, avenue de la Paix

language.pngWorking languages

During the meetings, simultaneous interpretation in the six WMO official languages (Arabic, Chinese, English, French, Russian and Spanish) will be provided in the main conference room. Additional meeting rooms without interpretation facilities will also be available.

INF.pngMaterial arrangements for the session

Material arrangements for the session are described in the INF1(1) document posted in the Information Documents section of this website.

download.pngHow to download documents?

how to download.png

Visa.pngEntry requirements

All participants who require a valid visa for admission to Switzerland should make their application for visas directly to the nearest diplomatic representation of Switzerland and include a copy of the notification of the meeting with the visa application. It is advisable that such applications be made as soon as possible (minimum 20 days but maximum 3 months before departure). Please inform us through and chy@wmo.intif you require an individual invitation letter for your visa application.

Switzerland applies Schengen regulations for the issuance of visas. This means that all participants requiring a visa to enter Switzerland should apply for their visa directly to the Embassy or Consulate-General of Switzerland in their country. In cases where no Swiss Embassy or Consulate is available, participants should apply to the country designated by Switzerland to handle visa applications.

Under Schengen regulations, it is necessary for each visa applicant to make an appointment and to present him/herself in person, in order to submit and register biometric data. On 11 October 2011, the Schengen member states introduced the Visa Information System (VIS), which is used to store biometric data of Schengen visa applicants. Data remains valid in the VIS system for a period of 5 years.

Additional information in several languages regarding the implementation of the VIS system, registration of biometric data and the rollout timetable for Swiss embassies/consulates implementing the VIS system is available through the following link:

Time needed to obtain a visa may vary from case to case. It is strongly recommended that delegates inform themselves on the relevant appointment system and procedures as early as possible, to ensure that the visa may be issued in a timely manner. Delegates can find this information on relevant national government websites, or they can consult directly with the Swiss Embassy/Consulate in the applicant's country of residence.

In cases where no diplomatic relations exist between a Member and Switzerland, or where a Member considers that some difficulties may be experienced in obtaining visas, delegates can submit a visa request directly to Switzerland. However, under Annex I of the General Regulations of the Organization, this request must be sent by the delegate to the Secretary-General of the World Meteorological Organization who will in turn submit it to Switzerland.

Such requests must contain all the necessary details: name, surname, date and place of birth, father's name, nationality, passport number, date and place of issue, expiry date, profession, place where the visa is to be issued, and duration of stay in Switzerland. Requests should be received by the Secretary-General as far in advance of the meeting as possible.

Additional information regarding entry visas for Switzerland and Swiss representation abroad may be found through the following links:



hotel.pngHotel reservation

Participants are advised that hotel accommodation in Geneva and the surrounding area may be scarce. Participants should inquire with the hotels to see if it is possible to have special UN rates for the dates of their stay. Please find below the list of some of the hotels located in the vicinity of WMO.

1) Hotel Ibis Genève Centre Lac

Rue De Berne 26, Pâquis, 1201 Geneva, Switzerland

2) Hotel Drake-Longchamp

Rue Butini 7, Pâquis, 1202 Geneva, Switzerland

3) Hotel Ibis Genève Centre Nations

Rue du Grand Pré 33-35, 1201 Geneva, Switzerland

4) Hotel Les Nations

Rue du Grand Pré 62, 1202 Geneva, Switzerland

5) Hotel Eden

Rue de Lausanne 135, 1202 Geneva, Switzerland

6) Hotel Mon Repos

Rue de Lausanne 131, 1202 Geneva, Switzerland


For more information, you can consult the Geneva Tourism official website. 

transportation.pngTransportation from airport

Hotels in Geneva provide all guests, upon demand, with a free ticket for public transport. In addition, upon arrival at Geneva airport, free tickets are available from the machine in the baggage conveyor Hall before passing customs.

General information on how to get to WMO from the airport and how to get to the City centre can be found on the WMO website: Here.

information.pngContact information

All enquiries related to the organization of the Technical Conference and the extraordinary session of the Commission for Hydrology (CHy-Ext.(2019)) should be sent to with copy to