Station Name: ATBARA WMO Station Number: 62680 National I.D. Number: Country: SUDAN WMO Region: REGION I - AFRICA Latitude: 17d 42m N Longitude: 033d 58m E Elevation: 345 m In the following tables, byr = beginning year of normals or extremes data period eyr = ending year of normals or extremes data period NA = Not Applicable, data not submitted or not computed * = value > 0 but < units resolution Ann-NCDC = annual value computed by NCDC from monthly values provided by Members ========================================================== The normals data and climate variable descriptions are presented in these tables as provided by the WMO Member country. ========================================================== Element 01: Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MNDLYMX MNDLYMI Month ---------------------------------- Jan 22.1 29.7 14.4 Feb 23.7 31.9 15.4 Mar 27.5 35.8 19.1 Apr 30.9 39.4 22.3 May 34.1 42.1 26.1 Jun 35.5 42.8 28.2 Jul 34.0 40.7 27.3 Aug 33.5 40.1 26.9 Sep 34.3 41.2 27.3 Oct 32.1 39.3 25.0 Nov 27.4 34.6 20.2 Dec 23.5 30.8 16.1 Annual 29.9 37.4 22.3 Ann-NCDC 29.9 37.4 22.4 ---------------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MAX_VAL DATEMAX Month -------------------------- Jan 36.8 197330 Feb 41.4 197328 Mar 44.2 198808 Apr 46.3 197922 May 46.7 199031 Jun 46.5 199001 Jul 46.4 198727 Aug 45.8 198706 Sep 44.7 197303 Oct 44.5 199004 Nov 40.7 198001 Dec 37.8 199007 Annual 46.719900531 Ann-NCDC NA NA -------------------------- Element 03: Minimum Dry Bulb Temperature (deg C) MIN_VAL (Statistic 05): Minimum Value DATEMIN (Statistic 14): Date (Year/Day) of Occurrence of Minimum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MIN_VAL DATEMIN Month -------------------------- Jan 7.5 198324 Feb 8.0 198209 Mar 10.8 198307 Apr 14.1 196803 May 18.8 196107 Jun 21.6 198425 Jul 19.5 197829 Aug 20.0 197502 Sep 20.0 198619 Oct 16.4 197727 Nov 13.0 198227 Dec 6.5 197124 Annual 6.519711224 Ann-NCDC NA NA -------------------------- Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan Trace Feb Trace Mar Trace Apr 0.4 May 3.5 Jun 1.5 Jul 19.1 Aug 26.8 Sep 6.7 Oct 1.9 Nov 0.0 Dec 0.0 Annual 59.9 Ann-NCDC NA ------------------ Element 08: Maximum 24-Hour Precipitation (mm) MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MAX_VAL DATEMAX Month -------------------------- Jan Trace 199033 Feb Trace 199033 Mar Trace 199033 Apr 7.8 197930 May 17.2 198021 Jun 12.4 196128 Jul 92.1 196113 Aug 64.0 198804 Sep 47.2 197904 Oct 17.8 197718 Nov 0.0 199032 Dec 0.0 199032 Annual 92.119610713 Ann-NCDC NA NA -------------------------- Element 11: Relative Humidity (%) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 36.0 Feb 28.0 Mar 22.0 Apr 20.0 May 20.0 Jun 22.0 Jul 32.0 Aug 36.0 Sep 30.0 Oct 29.0 Nov 35.0 Dec 38.0 Annual 29.0 Ann-NCDC 29.0 ------------------ Element 13: Station Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 972.2 Feb 971.0 Mar 968.9 Apr 967.1 May 966.3 Jun 966.0 Jul 966.6 Aug 967.0 Sep 967.0 Oct 968.3 Nov 970.4 Dec 972.0 Annual 968.6 Ann-NCDC 968.6 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 3.1 Feb 3.6 Mar 3.1 Apr 2.7 May 2.7 Jun 2.2 Jul 2.7 Aug 2.7 Sep 2.2 Oct 2.2 Nov 2.7 Dec 3.1 Annual NA Ann-NCDC 2.8 ------------------ Element 17: Wind Direction (degrees) PREVAIL (Statistic 41): Prevailing ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 360.0 Feb 360.0 Mar 360.0 Apr 360.0 May 360.0 Jun 225.0 Jul 225.0 Aug 225.0 Sep 225.0 Oct 360.0 Nov 360.0 Dec 360.0 Annual NA Ann-NCDC NA ------------------ Element 38: Piche Evaporation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 13.2 Feb 15.6 Mar 19.3 Apr 21.6 May 21.9 Jun 21.7 Jul 19.8 Aug 18.7 Sep 19.9 Oct 18.1 Nov 14.8 Dec 13.0 Annual 18.1 Ann-NCDC NA ------------------ Element 40: Bright Sunshine %OFPOSS (Statistic 37): Percent of Possible ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 89.0 Feb 91.0 Mar 86.0 Apr 86.0 May 80.0 Jun 67.0 Jul 68.0 Aug 71.0 Sep 75.0 Oct 84.0 Nov 91.0 Dec 84.0 Annual 81.0 Ann-NCDC NA ------------------ Element 40: Bright Sunshine Statistic 44: Mean Number of Hours Qualifier: 06: Mean Daily Value Qualifier: NCDC: Mean Monthly Value Computed by NCDC from Mean Daily Values Provided by Member -------------------------- byr: 1961 1961 eyr: 1990 1990 Qualifier: 06 NCDC Month -------------------------- Jan 9.7 300.7 Feb 10.1 282.8 Mar 10.3 319.3 Apr 10.8 324.0 May 10.3 319.3 Jun 8.9 267.0 Jul 8.7 269.7 Aug 8.6 266.6 Sep 9.2 276.0 Oct 10.1 313.1 Nov 10.4 312.0 Dec 9.5 294.5 Annual 9.7 NA Ann-NCDC 9.7 3545.0 -------------------------- Element 95: Number Days with Precipitation GE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 0.1 mm Qualifier: 1.0 mm Qualifier: 10.0 mm ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Qualifier: 0.1 1.0 10.0 Month ---------------------------------- Jan 0.0 0.0 0.0 Feb 0.0 0.0 0.0 Mar 0.0 0.0 0.0 Apr 0.2 0.1 0.0 May 0.7 0.4 0.1 Jun 0.4 0.3 0.0 Jul 1.7 1.3 0.4 Aug 2.8 2.2 0.9 Sep 1.2 0.8 0.2 Oct 0.3 0.3 0.1 Nov 0.0 0.0 0.0 Dec 0.0 0.0 0.0 Annual 7.3 5.4 1.7 Ann-NCDC 7.3 5.4 1.7 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