April broke all records

Too warm, too dry and too sunny

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April 2007 has set new benchmarks for temperature, dryness and sunshine duration. For the first time since the beginning of regular weather records, a single month has reached new record levels in all three elements. This reports the German Weather Service (DWD) after initial evaluations of the results of its approximately 2, 200 stations.

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The reason for the exceptional weather were numerous areas of high pressure over Germany, which kept clouds and rain at a distance. April is already the eighth far too warm month in a row. In many places the temperatures reached summerly values. As the open-air swimming pools open, the continuing dryness of agriculture is detrimental and forest fire hazards are rising.

Warmth like in midsummer

In Germany, temperatures were at least 11.7 degrees Celsius (° C) and thus about 4.4 degrees above the mean of the reference period 1961 to 1990. This month clearly exceeded the hitherto warmest April, which in 1961 a mean temperature of 10, 6 ° C had. At several DWD stations, the 30 degree mark was cracked. In the Rhineland, 15 summer days with a maximum temperature above 25 ° C were registered locally. These are more summer days than expected in an average July.

Dryest April since 1901

In April there was very little in Germany and in some places no rain. On average, four liters per square meter were registered, which is only seven percent of the norm. At 27 percent of all DWD stations fell less than one liter per square meter of precipitation, about six percent of all stations registered not a single raindrop, including, for example, in Giessen and Karlsruhe. display

The hitherto driest April since 1901 brought in 1974 in Germany-wide mean at least 21.3 liters per square meter. Whether or not April will even be the driest of months in Germany can not yet be conclusively assessed. The hitherto driest single month since the beginning of recording in 1901 was October 1908 with 4.2 liters of rain per square meter.

Lasting sunshine

With an average sunshine duration of 283 hours, the normal value (152 hours) was exceeded by more than 80 percent. The sunniest April was with 217 hours so far the year of 1968. At all DWD measuring points more sunshine was registered, as is usual in April. Especially in southern Germany, the sun was working overtime: twice the normal value was measured.

(DWD, 02.05.2007 - NPO)