Station Name: OAK RIDGE, TN WMO Station Number: National I.D. Number: 00406750 Country: UNITED STATES OF AMERICA WMO Region: REGION IV - NORTH & CENTRAL AMERICA Latitude: 36d 06m N Longitude: 084d 11m W Elevation: 275 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 #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------- byr: 1961 1961 eyr: 1990 1990 Statistic: MEAN #_YEARS Month -------------------------- Jan 1.7 30 Feb 3.8 30 Mar 8.8 30 Apr 13.8 30 May 18.3 30 Jun 22.4 30 Jul 24.3 30 Aug 24.0 30 Sep 20.6 30 Oct 14.1 30 Nov 8.5 30 Dec 3.7 30 Annual 13.7 30 Ann-NCDC 13.7 NA -------------------------- Element 02: Maximum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MAX_VAL (Statistic 04): Maximum Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------ byr: 1961 1962 1962 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MAX_VAL DATEMAX #_YEARS Month ------------------------------------------ Jan 7.1 21.7 197528 30 Feb 9.9 26.1 197726 30 Mar 15.6 29.4 198219 30 Apr 21.1 33.3 198627 30 May 25.2 33.3 198830 30 Jun 29.0 38.3 198824 30 Jul 30.4 39.4 198017 30 Aug 30.0 39.4 198322 30 Sep 26.7 35.6 197503 30 Oct 21.1 31.7 198602 30 Nov 14.7 27.2 198701 30 Dec 9.1 25.6 198204 30 Annual 20.0 NA NA 30 Ann-NCDC 20.0 NA NA NA ------------------------------------------ Element 03: Minimum Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MIN_VAL (Statistic 05): Minimum Value DATEMIN (Statistic 14): Date (Year/Day) of Occurrence of Minimum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------ byr: 1961 1962 1962 1961 eyr: 1990 1990 1990 1990 Statistic: MEAN MIN_VAL DATEMIN #_YEARS Month ------------------------------------------ Jan -3.8 -27.2 198521 30 Feb -2.4 -17.2 196503 30 Mar 2.1 -17.2 198003 30 Apr 6.4 -6.7 198701 30 May 11.2 -1.1 197604 30 Jun 15.8 3.9 197708 30 Jul 18.3 9.4 198802 30 Aug 17.9 10.0 198908 30 Sep 14.4 .6 196730 30 Oct 7.1 -4.4 197629 30 Nov 2.3 -12.2 197630 30 Dec -1.8 -21.7 198325 30 Annual 7.3 NA NA 30 Ann-NCDC 7.3 NA NA NA ------------------------------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value MIN_MLY (Statistic 20): Minimum Monthly Value QUIN20% (Statistic 22): First Quintile QUIN40% (Statistic 23): Second Quintile QUIN60% (Statistic 24): Third Quintile QUIN80% (Statistic 25): Fourth Quintile MAX_MLY (Statistic 26): Maximum Monthly Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal -------------------------------------------------------------------------- byr: 1961 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY #_YEARS Month -------------------------------------------------------------------------- Jan 116.1 23.6 65.5 92.5 121.2 161.0 244.3 30 Feb 110.2 21.3 63.8 88.9 115.3 151.9 228.9 30 Mar 144.3 56.9 86.9 118.4 151.1 195.8 310.9 30 Apr 103.6 22.4 62.0 84.8 108.5 141.0 234.7 30 May 118.9 20.3 62.2 91.4 123.4 168.7 271.8 30 Jun 110.2 13.5 50.0 79.5 112.8 162.1 283.0 30 Jul 138.4 39.4 69.3 104.4 143.0 198.6 489.5 30 Aug 94.0 31.8 53.8 75.4 98.0 129.8 231.1 30 Sep 98.0 10.4 51.1 75.2 101.6 139.4 225.0 30 Oct 80.8 0.0 36.6 59.2 83.8 119.6 176.5 30 Nov 116.6 45.2 71.4 96.3 121.9 157.0 273.8 30 Dec 134.6 17.0 71.1 104.1 139.7 190.5 321.1 30 Annual 1365.7 NA NA NA NA NA NA 30 Ann-NCDC 1365.7 NA NA NA NA NA NA NA -------------------------------------------------------------------------- Element 08: Maximum 24-Hour Precipitation (mm) MAX_DLY (Statistic 11): Maximum Daily Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value #_YEARS (Statistic 98): Number of Years used to Calculate Normal ---------------------------------- byr: 1962 1962 1962 eyr: 1990 1990 1990 Statistic: MAX_DLY DATEMAX #_YEARS Month ---------------------------------- Jan 78.2 198819 27 Feb 58.2 199003 28 Mar 95.3 197316 28 Apr 137.9 197704 28 May 111.8 197327 28 Jun 89.9 196923 28 Jul 119.6 196711 28 Aug 124.0 197009 28 Sep 83.1 198201 28 Oct 55.6 198422 29 Nov 126.5 197327 29 Dec 104.4 196930 29 Annual NA NA NA Ann-NCDC NA NA NA ---------------------------------- Element 09: Snowfall (cm) MEDIAN (Statistic 02): Median Value MAX_DLY (Statistic 11): Maximum Daily Value DATEMAX (Statistic 12): Date (Year/Day) of Occurrence of Maximum Daily Value MEANMLY (Statistic 15): Mean Monthly Value QUAR25% (Statistic 58): First Quartile QUAR75% (Statistic 59): Third Quartile #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------------------------------------------------------ byr: 1962 1962 1962 1962 1962 1962 1962 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEDIAN MAX_DLY DATEMAX MEANMLY QUAR25% QUAR75% #_YEARS Month ------------------------------------------------------------------ Jan 9.9 17.5 198807 10.2 2.8 17.5 27 Feb 9.7 13.7 197918 9.7 .5 13.7 28 Mar .8 10.2 197225 2.0 Trace 2.5 28 Apr .0 7.6 198703 .5 .0 Trace 28 May .0 .0 199031 .0 .0 .0 28 Jun .0 .0 199030 .0 .0 .0 28 Jul .0 .0 199031 .0 .0 .0 28 Aug .0 .0 199031 .0 .0 .0 28 Sep .0 .0 199030 .0 .0 .0 28 Oct .0 Trace 198920 Trace .0 .0 29 Nov Trace 2.0 196629 .3 .0 .3 29 Dec 1.3 20.1 196323 5.6 Trace 8.9 29 Annual NA NA NA 28.3 NA NA NA Ann-NCDC NA NA NA NA NA NA NA ------------------------------------------------------------------ Element 51: Number Days with Thunder (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element 61: Number Days with Haze/Smoke (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element 63: Number Days with Blowing Dust/Sand (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element 83: Number Days Maximum Temperature GE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 10.0 deg C Qualifier: 35.0 deg C -------------------------- byr: 1962 1962 eyr: 1990 1990 Qualifier: 10.0 35.0 Month -------------------------- Jan 10.4 .0 Feb 13.8 .0 Mar 25.6 .0 Apr 29.3 .0 May 31.0 .0 Jun 30.0 .6 Jul 31.0 2.2 Aug 31.0 1.5 Sep 30.0 .1 Oct 30.7 .0 Nov 23.8 .0 Dec 13.8 .0 Annual 300.4 4.4 Ann-NCDC 300.4 4.4 -------------------------- Element 85: Number Days Minimum Temperature LE Threshold (count) Statistic 15: Mean Monthly Value Qualifier: 0.0 deg C Qualifier: 10.0 deg C -------------------------- byr: 1962 1962 eyr: 1990 1990 Qualifier: 0.0 10.0 Month -------------------------- Jan 23.1 30.6 Feb 19.0 27.6 Mar 12.3 28.3 Apr 3.0 21.5 May .1 11.3 Jun .0 1.8 Jul .0 .1 Aug .0 * Sep .0 4.8 Oct 2.6 20.6 Nov 10.9 27.5 Dec 20.2 30.0 Annual 91.2 204.1 Ann-NCDC 91.2 204.1 -------------------------- Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1990 Month ------------------ Jan 10.1 Feb 9.3 Mar 10.4 Apr 8.9 May 9.9 Jun 8.5 Jul 10.3 Aug 8.1 Sep 7.0 Oct 6.7 Nov 8.9 Dec 9.6 Annual 107.7 Ann-NCDC 107.7 ------------------ Element 97: Number Days with Freezing Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element 98: Number Days with Blowing Snow (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element AA: Number Days with Rain/Drizzle (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element AB: Number Days with Snow/Hail (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element AC: Number Days with Fog/Mist (count) MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan NA Feb NA Mar NA Apr NA May NA Jun NA Jul NA Aug NA Sep NA Oct NA Nov NA Dec NA Annual NA Ann-NCDC NA ------------------ Element AD: Number Days with Weather Phenomena (count) #_YEARS (Statistic 98): Number of Years used to Calculate Normal ------------------ byr: 1962 eyr: 1982 Month ------------------ Jan 1 Feb 1 Mar 0 Apr 0 May 0 Jun 0 Jul 0 Aug 0 Sep 0 Oct 0 Nov 3 Dec 1 Annual NA Ann-NCDC NA ------------------