Station Name: Sofia WMO Station Number: 15614 National I.D. Number: Country: BULGARIA WMO Region: REGION VI - EUROPE Latitude: 42d 39m N Longitude: 023d 23m E Elevation: 595 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 MAX_VAL (Statistic 04): Maximum Value MIN_VAL (Statistic 05): Minimum Value ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Statistic: MEAN MAX_VAL MIN_VAL Month ---------------------------------- Jan -1.5 17.3 -23.1 Feb .7 21.6 -17.5 Mar 4.8 25.7 -15.5 Apr 10.4 30.3 -4.6 May 14.6 31.8 -2.2 Jun 18.0 37.2 2.5 Jul 19.8 38.3 5.3 Aug 20.7 38.1 3.5 Sep 16.1 34.6 -2.0 Oct 10.7 31.7 -5.6 Nov 5.1 24.0 -15.3 Dec .6 19.1 -16.2 Annual 10.0 38.3 -23.1 Ann-NCDC 10.0 NA NA ---------------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.2 Feb 5.0 Mar 9.8 Apr 15.3 May 20.1 Jun 23.5 Jul 25.9 Aug 25.7 Sep 22.6 Oct 16.6 Nov 9.6 Dec 4.0 Annual 16.3 Ann-NCDC 15.0 ------------------ Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan -4.9 Feb -2.9 Mar .3 Apr 4.7 May 9.4 Jun 12.4 Jul 13.8 Aug 14.3 Sep 10.6 Oct 5.7 Nov 1.3 Dec -2.7 Annual 5.2 Ann-NCDC 5.2 ------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 31.0 Feb 34.0 Mar 37.0 Apr 49.0 May 78.0 Jun 75.0 Jul 56.0 Aug 49.0 Sep 38.0 Oct 35.0 Nov 53.0 Dec 44.0 Annual 576.0 Ann-NCDC 579.0 ------------------ Element 11: Relative Humidity (%) 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 77.0 92.0 59.0 Feb 74.0 90.0 54.0 Mar 69.0 90.0 46.0 Apr 63.0 87.0 42.0 May 67.0 87.0 47.0 Jun 67.0 86.0 49.0 Jul 63.0 84.0 47.0 Aug 62.0 82.0 46.0 Sep 65.0 86.0 49.0 Oct 70.0 88.0 51.0 Nov 77.0 92.0 55.0 Dec 79.0 94.0 58.0 Annual 68.0 88.0 50.0 Ann-NCDC 69.4 88.2 50.2 ---------------------------------- Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1021.4 Feb 1019.0 Mar 1017.6 Apr 1014.2 May 1014.9 Jun 1014.6 Jul 1014.6 Aug 1015.2 Sep 1018.4 Oct 1021.3 Nov 1020.7 Dec 1021.1 Annual 1017.8 Ann-NCDC 1017.8 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.5 Feb 5.0 Mar 5.9 Apr 7.7 May 11.0 Jun 13.5 Jul 14.4 Aug 13.8 Sep 11.7 Oct 9.0 Nov 6.9 Dec 5.3 Annual 9.0 Ann-NCDC 9.1 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 74.0 Feb 98.0 Mar 136.0 Apr 170.0 May 211.0 Jun 242.0 Jul 286.0 Aug 272.0 Sep 216.0 Oct 170.0 Nov 96.0 Dec 64.0 Annual 2043.0 Ann-NCDC 2035.0 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.4 Feb 2.7 Mar 2.8 Apr 2.6 May 2.3 Jun 2.3 Jul 2.3 Aug 2.2 Sep 2.1 Oct 2.1 Nov 2.1 Dec 2.3 Annual 2.4 Ann-NCDC 2.4 ------------------ Element 19: Soil Temperature (deg C) Statistic 01: Mean Value Qualifier: 2.0 cm depth Qualifier: 5.0 cm depth Qualifier: 10.0 cm depth Qualifier: 20.0 cm depth ------------------------------------------ byr: 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 Qualifier: 2.0 5.0 10.0 20.0 Month ------------------------------------------ Jan -.6 -.2 .2 .4 Feb .8 .8 1.1 1.2 Mar 5.0 4.9 4.8 4.6 Apr 11.4 11.1 10.9 10.3 May 17.2 16.7 16.3 14.9 Jun 21.1 20.2 19.9 19.0 Jul 23.2 22.4 22.1 21.2 Aug 22.6 21.9 21.6 21.1 Sep 18.3 17.9 17.9 17.7 Oct 11.6 11.7 11.9 12.2 Nov 5.3 5.6 5.8 6.2 Dec .9 1.3 1.6 2.1 Annual 11.4 11.2 11.2 10.9 Ann-NCDC NA NA NA NA ------------------------------------------ Element 20: Sky Cover (Cloud Cover) (okta) MEAN (Statistic 01): Mean Value MEAN% (Statistic 57): Mean Percent -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN MEAN% Month -------------------------- Jan 5.5 69.0 Feb 5.4 67.0 Mar 5.1 64.0 Apr 5.0 63.0 May 4.8 60.0 Jun 4.2 52.0 Jul 3.3 41.0 Aug 3.0 37.0 Sep 3.5 44.0 Oct 4.0 50.0 Nov 5.0 63.0 Dec 5.6 70.0 Annual 4.6 57.0 Ann-NCDC 4.5 56.7 -------------------------- Element 21: Pan Evaporation (mm) Statistic 15: Mean Monthly Value Qualifier: 3000. sq cm evaporimeter Qualifier: 10000. sq cm evaporimeter Qualifier: 20000. sq cm evaporimeter ---------------------------------- byr: 1961 1961 1961 eyr: 1990 1990 1990 Qualifier: 3000. 10000. 20000. Month ---------------------------------- Jan NA NA NA Feb NA NA NA Mar NA NA NA Apr 84.0 75.9 NA May 104.1 95.7 84.2 Jun 124.8 117.5 101.6 Jul 154.2 141.5 139.3 Aug 148.2 137.2 135.4 Sep 107.2 97.2 101.1 Oct 69.5 57.2 62.8 Nov NA NA NA Dec NA NA NA Annual NA NA NA Ann-NCDC NA NA NA ---------------------------------- Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan NA Feb NA Mar 1.0 Apr 2.0 May 8.0 Jun 9.0 Jul 8.0 Aug 7.0 Sep 2.0 Oct 1.0 Nov NA Dec NA Annual 38.0 Ann-NCDC NA ------------------ Element 55: Number Days with Rain Showers (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.0 Feb 2.0 Mar 4.0 Apr 12.0 May 15.0 Jun 16.0 Jul 12.0 Aug 10.0 Sep 7.0 Oct 4.0 Nov 3.0 Dec 3.0 Annual 90.0 Ann-NCDC 90.0 ------------------ Element 58: Number Days with Fog/Ice Fog (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 4.0 Feb 2.0 Mar 1.0 Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct 1.0 Nov 5.0 Dec 6.0 Annual 19.0 Ann-NCDC NA ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 13.0 Feb 14.0 Mar 17.0 Apr 13.0 May 15.0 Jun 15.0 Jul 18.0 Aug 20.0 Sep 18.0 Oct 19.0 Nov 14.0 Dec 11.0 Annual 187.0 Ann-NCDC 187.0 ------------------ Element 82: Number Days with Gale Force Winds (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 2.0 Feb 2.0 Mar 2.0 Apr 3.0 May 2.0 Jun 2.0 Jul 1.0 Aug 1.0 Sep 1.0 Oct 2.0 Nov 2.0 Dec 2.0 Annual 22.0 Ann-NCDC 22.0 ------------------ Element BT: Number Days with Occurrence of Rain (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 7.0 Feb 5.0 Mar 8.0 Apr 9.0 May 6.0 Jun 4.0 Jul 2.0 Aug 2.0 Sep 4.0 Oct 7.0 Nov 9.0 Dec 6.0 Annual 69.0 Ann-NCDC 69.0 ------------------