GEN 3.5 METEOROLOGICAL SERVICES

GEN 3.5.1 Responsible service

The Aeronautical Meterorological Authority in Iceland is the Icelandic Transport Authority. The Icelandic Meteorological Office (IMO) is the Meteorological Watch Office (MWO) and along with Isavia the meteorological service provider for aviation in Iceland. The service is provided according to a service contract between the Ministry of Transport and Local Government and Isavia and a collaborating contract between Isavia and IMO.

	Icelandic Met Office Bustadavegi 9 IS-150 Reykjavik, Iceland
Telephone:	+ 354 522 6000
Telefax:	N/A
AFS:	BIRKYMYX
E-mail:	office@vedur.is
Internet:	https://en.vedur.is/weather/aviation/

	Isavia ANS Nautholsvegur 60-66 IS-102 Reykjavik, Iceland
Telephone:	+ 354 424 4000
Telefax:	N/A
AFS:	BIRKZQZQ
E-mail:	isavia@isavia.is
Internet:	https://www.isavia.is/en/corporate/c-preflight-information/aviation-weather https://www.isavia.is/en/corporate/c- preflight-information/aviation-weather

GEN 3.5.1.1 Appropriate Documents

The service is provided in accordance with the provisions contained in the following documents:

Regulation nr. 720/2019. Translation of (EU) 2017/373.

Regulation (EU) 2017/373 - common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight.

ICAO Annex 3 - Meteorological Service for International Air Navigation.
ICAO Doc 7030 - Regional Supplementary Procedures.
ICAO Doc 8896 - Manual of Aeronautical MET Practices.
ICAO Doc 9328 - Manual of Runway Visual Range Observing and Reporting Practices.
ICAO Doc 9377 - Manual on Co-ordination between Air Traffic Services and Aeronautical Meteorological Services.
ICAO Doc 9634 eANP NAT region.
WMO Publication No. 9 Weather Reports.
WMO Technical Regulations No. 49.

Differences to these provisions are detailed in GEN 1.7

GEN 3.5.2 Area of Responsibility

The Icelandic Meteorological Office is the official meteorological office in Iceland and is the Meteorological Watch Office in respect to air navigation services. IMO monitors and issues warnings relating to hazardous weather phenomena in Reykjavik FIR/CTA and collects and distributes meteorological information according to flight.

Isavia is responsible for METARs observations and distribution for other airports than Reykjavik and Keflavik which are in the responsibility of IMO. ISAVIA contribution to the weather service is also by monitoring and distributing information about hazardous weather phenomena.

GEN 3.5.3 Meteorological observations and reports

GEN 3.5.3.1 Surface weather observations

Airports weather reports are either made manually or with aid of automatic instruments:

Routine reports METAR
For the aerodromes at Keflavik, Reykjavik, Akureyri and Egilsstadir are disseminated 24 hours, half hourly from Keflavík, but hourly from other aerodromes.
Keflavik reports are included in Shannon VOLMET broadcasts in Ireland (see VOLMET table).

Special reports
SPECI is issued whenever a significant deterioration or improvement of weather is observed between the routine observations.
If the weather is deteriorating, SPECI is issued immediately but if it is improving, it is issued 10 minutes after the significant improvement. Keflavík Airport is the only airport that does not issue SPECI.
These reports are disseminated in the same way as METARs. SPECI may also be issued on a specific occasion on request by ATS or operator.

METAR and SPECI reports, for the aerodromes at Bildudalur, Isafjordur, Gjogur, Grimsey, Husavik, Hornafjordur, Thorshofn, Vopnafjordur and Vestmannaeyjar are issued hourly during the hours of services at each airport (see AD 2.3.7).
SPECI reports are issued whenever a significant chance of weather is observed. METAR og SPECI reports are distributed via AMHS to ATS, airlines and OPMET databanks. They are also available at the IMO website.

GEN 3.5.3.2 Surface wind

Wind speed and direction are measured at all Icelandic airports included in following tables with cup anemometers or Ultrasonic Wind Sensors. All the anemometers are installed about 7-10 meters above ground level. At each airport the anemometer is located so as to give readings representative of conditions on the airfield, as indicated on aerodrome charts. Indicators are located in the appropriate Air Traffic Service Units, but in Reykjavik an indicator is also located in the Meteorological Office. Wind speed is reported in knots.

GEN 3.5.3.3 Visibility

The visibility reported in all observations is the prevailing visibility. It is estimated from known distances in the environment. When the lowest visibility is different from the prevailing visibility, and 1) less than 1 500 m or 2) less than 50 per cent of the prevailing visibility and less than 5 000 m; the lowest visibility observed should also be reported and its general direction in relation to the aerodrome indicated by reference to one of the eight points of the compass. If the lowest visibility is observed in more than one direction, then the most operationally significant direction should be reported. When the visibility is fluctuating rapidly, and the prevailing visibility cannot be determined, only the lowest visibility should be reported, with no indication of direction.

GEN 3.5.3.4 Runway visual range (RVR)

At Akureyri, Egilsstadir, Keflavik and Reykjavik Airports, Instrumented Runway Visual Range Systems (RVR) are installed, as indicated on aerodrome charts. RVR values are included in METARs from when either the horizontal visibility or the runway visual range is observed to be less than 1500 metres.

The lower limit of the systems is at 10 metres.

RVR is reported in increments of 25m up to 400m, 50m between 400 and 800m and 100m to the upper limiting values which is 1500m.

GEN 3.5.3.5 Cloud height

Cloud height is estimated at all airports, but with ceilometer as an aid at Akureyri, Egilsstadir, Keflavik, Reykjavík, Isafjordur, Hornafjordur, Husavik and Vestmannaeyjar.

Cloud types are not given except for TCU and CB clouds.

GEN 3.5.3.6 Temperature / dew point

Air temperature and dew point are measured and reported in METAR from all airports.

GEN 3.5.3.7 QNH

Altimeter setting is reported in hPa which equals millibars.

GEN 3.5.3.8 Wind shear

Low level wind shear is not measured instrumentally at Icelandic Airports. Reports of wind shear from aircraft landing or taking off, or evidence of its existence as deduced from other available information can be included in METARs or MET-Reports (in ATIS) if of long duration. Information is given by voice regarding wind shear (of short or long durations) in the vicinity of aerodromes.

GEN 3.5.3.9 Meteorological upper air observations -
Thermodynamic diagrams

Weather balloons with radiosonde are launched twice every day at Keflavik aerodrome, at 11:00 and 23:00. IMO staff at Keflavik aerodrome perform the launches. Before launch, authorization must be given by the Keflavik air traffic control service.

In the period from 1. September to 10. May, weather measurement balloon with radiosonde is launched once every day at 11:00 at Egilsstadir aerodrome. Egilsstadir Airport staff perform the launch. Before launch, authorization must be given by the Egilsstadir AFIS.

Irregular launches of weather balloons: In certain circumstances, i.e. during eruption, number of launches can be increased at Keflavik and Egilsstadir airport up to four times a day. Prior to launch, authorization must be given in accordance with regular launches. Information on irregular launches at Keflavik and Egilsstadir shall be published in NOTAM.

During volcanic eruption, a mobile radiosonde station can be deployed near the active volcano. Also, it can be deployed for research and training purposes. Weather balloons with radiosonde will be launched by IMO scientists. When the launching site is near an aerodrome, authorization must be given by the respective AFIS/ATC services. Information on mobile radiosonde launches shall be published in NOTAM.

The results of the upper air measurements from BIKF and BIEG are published at the Icelandic Met. Office website;

https://en.vedur.is/weather/aviation/upper-air-observations/

GEN 3.5.3.10 Meteorological Stations

See tables GEN 3.5.3.11 (SYNOP) & GEN 3.5.3.12 (METAR) 3.5.3.12.

GEN 3.5.3.11 List of Meteorological Stations for International Air Navigation

INDEX NO	SYNOP STATION	COORDINATES	HEIGHTS	REMARKS
1	2	3	4	5
030	Reykjavík ^I.	6408N 02154W	52 m
005	Bolungarvík	6610N 02315W	26 m
063	Akureyri	6541N 01806W	23 m	Observation taken in City
089	Egilsstaðaflugvöllur ^II.	6516N 01424W	23 m
097	Dalatangi	6516N 01335W	9 m
082	Höfn	6416N 01512W	8 m
064	Kirkjubæjarklaustur - Stjórnarsandur ^I.	6348N 01801W	22 m
048	Vestmannaeyjar	6324N 02017W	118 m
018	Keflavik Aerodrome ^III.	6358N 02235W	47 m
Á klst. fresti / Hourly reports Synop skeyti er búið til úr sjálfvirkri athugun og METAR skeyti / Synop report is made from an automatic weather station and a METAR Á hálftíma fresti. Allar aðrar stöðvar athuga á 3ja klst. fresti (t.d. 00. 03. 06. o.s.frv.) / Half hourly reports. All other stations report at synoptic hours (i.e. 00. 03. 06. etc.)

GEN 3.5.3.12 Meteorological Stations & Webcams

Met. observations including webcams available online at IMO en.vedur.is and at Road Service road.is/.

GEN 3.5.3.13 Meteorological observations and reports

Name of station / ICAO Location Indicator	Type and frequency of Observation	Types of MET reports	Observation System and Site(s)	Hours of Operation (UTC)	Climatological information
1	2	3	4	5	6
BIKF - KEFLAVÍK / Keflavik	Half Hourly	METAR	Ultrasonic Wind Sensor Cup Anemometer RWY RVR EQPT Ceilometer	H24	Íslenska / Icelandic www.vedur.is/vedur/flugvedur/vedurfar https://www.vedur.is/vedur/%20flugvedur/vedurfar/ Enska / English en.vedur.is/weather/aviation/climate/ https://en.vedur.is/weather/%20aviation/climate/
BIRK - REYKJAVÍK / Reykjavik	Hourly	METAR SPECI	Cup Anemometer RWY RVR EQPT Ceilometer	H24
BIAR - AKUREYRI / Akureyri	Hourly	METAR SPECI	Cup Anemometer RWY RVR EQPT Ceilometer	H24
BIEG - EGILSSTAÐIR / Egilsstadir	Hourly	METAR SPECI	Cup Anemometer RWY RVR EQPT Ceilometer	H24
BIBD - BÍLDUDALUR / Bildudalur	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer	See AD 2.3.7
BIIS - ÍSAFJÖRÐUR / Isafjordur	Hourly during ATS Operations Hours	METAR SPECI	Ultrasonic Wind Sensor Ceilometer	See AD 2.3.7
BIGJ - GJÖGUR / Gjogur	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer	See AD 2.3.7
BIGR - GRÍMSEY / Grimsey	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer	See AD 2.3.7
BIHU - HÚSAVÍK / Husavik	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer Ceilometer	See AD 2.3.7
BITN - ÞÓRSHÖFN / Thorshofn	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer	See AD 2.3.7
BIVO - VOPNAFJÖRÐUR / Vopnafjordur	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer	See AD 2.3.7
BIHN - HORNAFJÖRÐUR / Hornafjordur	Hourly during ATS Operations Hours	METAR SPECI	Cup Anemometer Ceilometer	See AD 2.3.7
BIVM - VESTMANNAEYJAR / Vestmannaeyjar	Hourly during ATS Operations Hours	METAR SPECI	Ultrasonic Wind Sensor Ceilometer	See AD 2.3.7

GEN 3.5.4 Types of Services

All aeronautical meteorological services are provided by the Icelandic Meteorological Office 24 hours a day. These services are available through direct contact with meteorologist or through the Internet.

Personal briefing by a meteorologist is only available at the IMO headquarters, close to the Reykjavik airport (Bustadavegi 9).
For users at other airports, a personal briefing by a meteorologist is provided by telephone.
Information can be obtained by calling: calling the Tel: + 354 522 6000 Direct direct number: Tel: + 354 522 6310

Weather information for aviation can also be reached on the IMO website.

For international flights, the flight documentation comprises a significant weather chart (SWC), upper wind and upper air temperature charts and the latest available aerodrome forecasts for the destination and its alternate aerodromes as well as SIGMET, satellite pictures etc.

For the planning of domestic flights, both VFR and IFR, up to FL 180, summary forecasts of low level flight conditions over Iceland are disseminated in plain language in English, as written before.
Pilots can obtain this information by dialling the telephone number: +354 902 0600 select 5. The time of validity is: 07:00-12:00, 12:00-17:00 and 17:00-23:00.
The low level flight conditions over Iceland contain description and forecasts of the main weather components such as surface winds, winds and temperature at FL050, FL100 and FL180, visibility, weather phenomena, clouds, freezing level, ice and turbulence.

Aerodrome meteorological reports METAR are issued as listed in GEN 3.5.3.11.

GEN 3.5.4.1 Aerodrome Forecasts (TAF)

Name of Station	Type of Services	Hours of Service	Time of Validity	Time of Issue
1	2	3	4	5
Keflavik – BIKF Reykjavik – BIRK Egilsstadir – BIEG Akureyri – BIAR	TAF TAF AMD TAF COR	H24	00 - 24 03 - 03 06 - 06 09 - 09 12 - 12 15 - 15 18 - 18 21 - 21	23 02 05 08 11 14 17 20
Isafjordur – BIIS Bildudalur – BIBD Husavik – BIHU Hornafjordur – BIHN Gjogur – BIGJ Grimsey – BIGR Þórshofn – BITN Vestmannaeyjar – BIVM Vopnafjordur - BIVO	TAF TAF AMD TAF COR	During ATS Hours of Service See AD 2.3.7	During ATS Hours of Service See AD 2.3.7 08 - XX 11 - XX 14 - XX 17 - XX **	* 07:30 10:30 13:30 16:30
* Time of Issue: First TAF issued after the first METAR from the aerodrome, then according to these times. Note that TAF is only issued for ATS Hours of Service. ** Time of Validity: Minimum 2 hours up to 9 hours, depending on ATS Hours of Service.

GEN 3.5.5 Notification required from operators

Prior notification from operators in flight documentation for scheduled flight is in accordance with signed agreement. Prior notification from operators in respect of flight documentation, is normally required for a nonscheduled flight or a changed flight schedule, is usually asked for at least 2 hours before ETD (estimated time departure).

The request shall comprise all necessary details concerning planned flights (ref. ICAO Annex 3, paragraph 2.3.4).

When meteorological information has been collected well in advance of the ETD, the meteorological office should be consulted before departure for a possibly amended briefing.

GEN 3.5.6 Aircraft Reports

Pursuant to Annex 3, Chapter 5, significant meteorological conditions encountered during flight within Reykjavik FIR/ CTA and during the climb-out or approach phases of flight at aerodromes in Reykjavik FIR/ CTA shall be reported to the MET Office in Reykjavik.

No formal MET Reporting Points have been established. Reports shall be in accordance with Regional Supplementary Procedures, Doc 7030.

These reports can be reported at IMO website as PIREP:

https://en.vedur.is/weather/aviation/pirep

GEN 3.5.7 VOLMET Service

Name of Station	Call Sign ID (EM)	Frequency	Broadcast Period	Hours of Service	Aerodromes Included	Contents / Format / Remarks
1	2	3	4	5	6	7
KEFLAVIK	SHANNON VOLMET	3413 KHZ HN (during night) 5505 KHZ H24 8957 KHZ H24 13264 KHZ HJ (during day)	H+00 to H+25 and H+30 to H+55	H24	KEFLAVIK	Nil

Volmet service is provided for the Keflavik airport through Shannon VOLMET in Ireland.

GEN 3.5.8 SIGMET Service

GEN 3.5.8.1 General

For the safety of air traffic, IMO maintains an area meteorological watch and warning service. This service consists of a continuous weather watch within the Reykjavik FIR/CTA and the issuance of appropriate information (SIGMET). Warnings for the meteorological aerodromes are only included in the official weather warnings for Iceland, issued by the IMO, except for Aerodrome Warnings for Keflavík Air. IMO.

GEN 3.5.8.2 Area meteorological watch service

The area meteorological watch service performed by the Icelandic Meteorological Office, includes dissemination of meteorological information to the ATS Units within the Reykjavik FIR/CTA and issuing SIGMETs.

A SIGMET message is issued when any of the following phenomena is occurring or expected to occur within the Reykjavik FIR/CTA:

SIGMET Tegund / SIGMET Type	Tilgreind fyrirbæri á flugleið / Specified en-route phenomena	Orð sem táknar fyrirbærið í SIGMETi / Term to be used for phenomena in SIGMET	Bókstafur fyrir fyrirbæri í raðnúmeri / First Letter in sequence number for phenomena
WC	Tropical cyclone	TC (+ name)	C
WC	Fyrir sendingu WC prófunarskeyta / For WC exchange test purposes	TC (+ name)	X
WV	Volcanic ash	VA	A
WV	Fyrir sendingu WV prófunarskeyta / For WV exchange test purposes	VA	Y
WS	Þrumuveður / Thunderstorm	TS (GR)	T
	Mikil kvika / Severe turbulence	SEV TURB	U
	Mikil ísing / Severe icing	SEV ICE	I
	Frostrigning / Freezing rain	FZRA	F
	Miklar fjallabylgjur / Severe mountain waves	SEV MTW	M
	Víðáttumikið moldrok / Heavy dust storm	HVY DS	D
	Víðáttumikill sandbylur / Heavy sandstorm	HVY SS	S
	Geislavirkt ský / Radioactive cloud	RDOACT CLD	R
	Fyrir sendingu WS prófunarskeyta / For WS exchange test purposes		Z

The three-character sequence number has a first letter identifying the phenomenon (see table above), followed by two numeric characters corresponding to the number of SIGMET issued for that phenomenon since 00.01 UTC on the day concerned.

The period of validity is up to four hours, except up to six hours for Volcanic Ash SIGMETs.

SIGMETs are usually renewed 30 minutes before expiry, if necessary.
The Icelandic Meteorological Office is responsible for the distribution and transmission of the Reykjavik FIR/CTA SIGMETs .

Based on request from users, SIGMETs over oceanic ares are not issued unless an observation of the phenomena has been reported.

Name of MWO / Location Indicator	Hours	FIR or CTA served	Type of SIGMET validity	Specific Procedures	ATS Unit served	Additional Information
1	2	3	4	5	6	7
Reykjavik-BIRK	H24	Reykjavik FIR/ CTA	Weather SIGMETs for Reykjavik FIR/ CTA Volcano SIGMETs for Reykjavik FIR/ CTA consisting of preeruption warnings, and also warnings during the eruptions	NIL	Reykjavik ACC RCC TWR	Languages: English and Icelandic Charts Available: S, U, P, W, T MET information/ flight folders are available from flight dispatchers, for example at Keflavik Airport. If requested, flight folder and weather briefing by a meteorologist is available by telephone at IMO Reykjavik tel: +354 5226000 5226310
Note: Charts Available: S = surface analysis (current chart); U = upper air analyses (3 = 300 h Pa); P = prognostic upper air chart ; W = significant weather chart ; T = tropopause chart

SIGMETs are broadcasted through ATIS at Keflavik and Reykjavik airport as applicable.

Reykjavik Oceanic Control Center transmit SIGMET, affecting the respective flight to pilot flying in BIRD CTA, through CPDLC, Iceland Radio or on control frequencies.

GEN 3.5.9 Other automated meteorological services

Aeronautical operational meteorological data is available via the Internet.

At the Icelandic Meteorological Office, https://en.vedur.is/
weather/aviation/ with observational data and forecasts and at Northavimet https://www.northavimet.com

Password Access can be obtained from Northavimet.