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The Weather of 2012
Observations at Vellmar, with the level of the Ostra, fog on the river and the state of Lake Tarn at Tarnmund, as recorded by The Tarnmund Observatory, observing since 1869. Temperatures in degrees, rainfall in millimetres.
The months
| Month | Mean | Warmest day | Coldest night | Rain | Fog days | Frost days | Remarks |
|---|---|---|---|---|---|---|---|
| January | -3.1° | 6° | -12° | 31 mm | 6 | 31 | |
| February | -1.8° | 11° | -14° | 32 mm | 5 | 29 | |
| March | 2.6° | 14° | -8° | 41 mm | 4 | 2 | |
| April | 7.9° | 18° | -1° | 51 mm | 3 | 0 | |
| May | 13.2° | 22° | 5° | 72 mm | 3 | 0 | |
| June | 16.5° | 29° | 6° | 92 mm | 4 | 0 | |
| July | 18.8° | 30° | 10° | 106 mm | 0 | 0 | |
| August | 18.6° | 29° | 11° | 100 mm | 0 | 0 | |
| September | 14.9° | 28° | 4° | 85 mm | 3 | 0 | |
| October | 10.2° | 22° | 0° | 36 mm | 8 | 0 | |
| November | 5.6° | 17° | -2° | 41 mm | 12 | 0 | |
| December | 2.4° | 11° | -9° | 43 mm | 12 | 4 |
Lake Tarn
The lake froze at Tarnmund on 28 January 2012, as the towns reported and bore the weight of a man by the end of the month; the ferry to the eastern shore was replaced by a marked path. The thaw is recorded on 4 March 2012.
The Ostra
The river rose to 1.2 metres above its mark at Vellmar bridge at the highest. 60 days of fog were recorded on the lower river, the ferries stopping when the far bank could not be seen.
The Observatory's note
The Tarnmund Observatory certifies the foregoing as the record of 2012, compiled from the Vellmar station, the lakeside station at Tarnmund and the garrison readings at Marschau. Readings on the Osmoor beyond the Reed Line are not taken. The Observatory notes that the front-line report received each evening from the War Ministry makes no mention of the weather at the front, and that none is expected.
Warmest month, 18.8°; coldest, -3.1°. Means are of the month; the warmest day and coldest night are the extremes recorded.
Weather in the public record
- 21 January 2012, Weinfeld. The Ostra rises 20 centimetres above its mark at Weinfeld. Cellars in Church Street are flooded. Report.
- 28 January 2012, Grauburg. The coldest night in 80 years is recorded at Grauburg. Lake Tarn freezes to the middle. Report.
- 16 February 2012, Dammberg. A storm strips roofs in Dammberg and fells the old lime in Mill Street. Report.
- 14 March 2012, Vellmar. A storm strips roofs in Vellmar and fells the old lime in Market Way. Report.
- 17 March 2012, Oberholt. The coldest night in 50 years is recorded at Oberholt. Lake Tarn freezes to the middle. Report.
- 21 March 2012, Sudholt. The coldest night in 20 years is recorded at Sudholt. Lake Tarn freezes to the middle. Report.
- 31 March 2012, Weinfeld. The coldest night in 40 years is recorded at Weinfeld. Lake Tarn freezes to the middle. Report.
- 1 April 2012, Vellhausen. A storm strips roofs in Vellhausen and fells the old lime in Church Square. Report.
- 12 April 2012, Norrbruck. The Ostra rises 60 centimetres above its mark at Norrbruck. Cellars in Weaver Gate are flooded. Report.
- 25 April 2012, Marschau. The coldest night in 70 years is recorded at Marschau. Lake Tarn freezes to the middle. Report.
- 8 May 2012, Norrbruck. A storm strips roofs in Norrbruck and fells the old lime in Mill Gate. Report.
- 8 May 2012, Weinfeld. The coldest night in 60 years is recorded at Weinfeld. Lake Tarn freezes to the middle. Report.
- 25 June 2012, Lindenmar. The coldest night in 80 years is recorded at Lindenmar. Lake Tarn freezes to the middle. Report.
- 26 June 2012, Grauholt. A storm strips roofs in Grauholt and fells the old lime in Cooper Lane. Report.
- 22 July 2012, Tarnmund. A storm strips roofs in Tarnmund and fells the old lime in Bridge Quay. Report.
- 16 September 2012, Vellmar. The Ostra rises 70 centimetres above its mark at Vellmar. Cellars in Warden Walk are flooded. Report.
- 25 September 2012, Lindenmar. A storm strips roofs in Lindenmar and fells the old lime in Mill Gate. Report.
- 3 October 2012, Salzhafen. The coldest night in 30 years is recorded at Salzhafen. Lake Tarn freezes to the middle. Report.
- 10 October 2012, Hochstadt. A storm strips roofs in Hochstadt and fells the old lime in Ostra Street. Report.
- 14 October 2012, Sanding. The coldest night in 30 years is recorded at Sanding. Lake Tarn freezes to the middle. Report.
- 2 November 2012, Hagenkirchen. A storm strips roofs in Hagenkirchen and fells the old lime in Low Street. Report.
- 11 November 2012, Tarnmund. A storm strips roofs in Tarnmund and fells the old lime in Ostra Row. Report.
- 13 November 2012, Tarnmund. A storm strips roofs in Tarnmund and fells the old lime in Chapel Walk. Report.
- 18 November 2012, Oberbach. A storm strips roofs in Oberbach and fells the old lime in Reed Street. Report.
- 28 November 2012, Dammberg. The coldest night in 20 years is recorded at Dammberg. Lake Tarn freezes to the middle. Report.
- 6 December 2012, Vellhausen. A storm strips roofs in Vellhausen and fells the old lime in Forge Walk. Report.
- 22 December 2012, Vellhausen. The Ostra rises 50 centimetres above its mark at Vellhausen. Cellars in Reed Street are flooded. Report.
- 30 December 2012, Berging. The coldest night in 30 years is recorded at Berging. Lake Tarn freezes to the middle. Report.