GEN 3  SERVICES

GEN 3.5  METEOROLOGICAL SERVICES

1 RESPONSIBLE SERVICE
The meteorological service for Civil Aviation in the Sudan is provided by sudan Meteorological Authority.
Postal address:Director General
Meteorological Authority.
P.O. Box 574,
Sudan, Khartoum
Telephone Numbers:(+249) (1) 83778836 – 83778837
FAX(+249) (1) 83771693
ICAO standard, recommended practices and procedures contained in the following documents are applied, with
the differences noted hereunder:-
Annex 3Meteorological Services for International Air Navigation,
Annex 15Aeronautical Information Services,
DOC 7030Regional Supplementary Procedures,
DOC 9708Air Navigation MID Plan,
DOC 8126Aeronautical Information Services Manual.
2AREA OF RESPONSIBILITY
2.1 Meteorological service is provided within the Khartoum FIR.
     
3.METEOROLOGICAL OBSERVATION AND REPORTS
3..1MET OBSERVATION AND REPORTS
Name of station/ Location indicatorType & frequency of observationTypes Of MET RPTObservation System & Site(s)HRSClimatological information
123456
ATBARA
HSAT 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in town.H241)
DAMAZIN
HSDZ 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimatedH241)
DONGOLA HSDNMETAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated.H241)
EL FASHIR
HSFS 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated.H241)
EL OBEID
HSOB 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airport.H241)
GENEINA
HSGN 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airport.H241)
JUBA
HSSJ 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airport.H241)
KASSALA
HSKA 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in town.H241)
KHARTOUM HSSKMETAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated.H241)
MALAKAL
HSSM 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated.H241)
MEROWE
HSMR 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airportH241)
NYALA
HSNN 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airportH241)
PORTSUDAN HSPNMETAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated.H241)
WAU
HSWW 		METAR SPECIPressure tube anemometer, visibility estimated, cloud base estimated. MET Office in airportH241)
1) Climatologically summaries are available for the Meteorological Authority. These summaries are also based on observations over a period of 30 years.

 
 
 
4TYPES OF SERVICES
A twenty-four hour personal preflight briefing and consultation for flight crewmembers is provided at Khartoum International Airport, together with flight documentation. Flight making intermediate stops at Juba and Port Sudan are normally provided with flight forecast covering the routes up to the next aerodrome that provide the necessary briefing and flight documentation. Enroute information for all flights is usually presented in charts form. Aerodrome reports and forecasts, including trend-type forecasts are provided on a routine basis for the aerodrome listed in table MET 1. SIGMET information is issued by the (MWO) for the protection of parked aircraft, and aircraft in flight with the Sudan FIR. Information shall be issued for the occurrence or expected occurrence of one or more of the following SIGMET phenomena at subsonic cruising levels; active thunderstorms including areas at widespread cumulonimbus clouds, or such clouds along a line with little or space in between, or to cumulonimbus embedded in cloud layers or concealed by haze; severe squall lines; heavy hail; severe turbulence; severe icing; marked mountain waves; and widespread sand or dust storms.
Instruments, supplemented by visual observations are used to measure aerodrome meteorological conditions.
Cloud height is normally estimated.
Runway visual range (RVR) facilities are not available.
Routine aerodrome reports are normally made every 30 minutes at the aerodromes listed on GEN 3.5 - 2. The METAR code is used for distributing the information through the aeronautical fixed Telecommunication Network (AFTN).
5 Notification required from operators

 
Pursuant to ICAO Annex 3, notification from operators in respect of all flights documentation, briefing and other
meteorological information needed by them is normally required as follows:
a) For flights up to 500 nautical miles, at least three hours before expected time of departure.
b) For flights over 500 nautical miles, at least six hours before the expected time of departure.
It is in the interest of all concerned to give the maximum notification. time possible. However, circumstances may not allow even the minimum times detailed above. In such an event the briefing provided may not be supported by documentation. When the forecast is collected well in advance of the estimated time of departure, the briefing officer should be contacted shortly before departure to check that later information does
not necessitate an amendment to the original forecast.
6AIRCRAFT REPORTS
In accordance with Annex 3 paragraph 5.3.1 observations are required at the following ATS reporting points:
NUBAR220000.0N0313824.0E
JUBA045234.0N0313559.0E
KASSALA52148.66N0361900.5E
ORNAT200000N250000E
EPLAS040000N0341148E
ALEBA220000N0352700E
GENEI132859N0222749E
PORTSUDAN192404.24N0371430.17E

AVONO092606N 0335418E

- Reports are also requested to be made at:
MEROWE182659.18N0314907.17E
Special observations shall be made by aircraft operating on international air routes whenever:
a) Severe turbulence or severe icing is encountered; or
b) Moderate turbulence, hail or cumulonimbus clouds are encountered during flight- or
c) Other meteorological conditions, for example, other en-route weather phenomena specified for
SIGMET messages, are encountered which, in the opinion of the pilot in command, may affect the safety or marked by affect the efficiency of the aircraft operations.
 


7. VOLMET SERVICE
Not available
8.   SIGMET AND AIR MET SERVICE
Name of MWO/ location indicatorsHRSFIR or CTA servedType of SIGMET/validitET proceduresAir Met ProcedureATS unit servedAdditional Information
12345678
HSSS24HSSSForecast/4 hoursobservationsKhartoum ACC HSSSThunderstorm/dust storm
9. OTHER AUTOMATED METEOROLOGICAL SERVICES
Not Applicable