Foggy day

Climatological knowledge Day temperature  T : max / med / min
Air temperature dependent days
T max  ≥ 35 ° C	Desert day
T max  ≥ 30 ° C	Hot day
T min ≥ 20 ° C	Tropical night
T max ≥ 25 ° C	Summer day
T med <15 ° C / 12 ° C	Heating day
T med ≥ 5 ° C	Vegetation day
T min <0 ° C	Frost day
T max <0 ° C	Ice day
not uniformly defined:	Cold day
Weather- dependent days
Cloud cover	Bright day
Cloud cover	Cloudy day
Cloud cover	Foggy day
Humidity / temperature	Sultry day
Precipitation	Precipitation day
Precipitation	Rainy day
Precipitation	Hail day
Precipitation	Snow (cover) day
storm	Storm day
storm	Thunderstorm day

Climatology counts days when fog prevails as fog days . A fog day is reported when the fog definition (visibility less than one kilometer) was fulfilled at some point between midnight and midnight of a day in a horizontal sector with an angle of at least 90 degrees.

One of the most foggy places in Germany is the top of the Brocken with an average of 306 foggy days a year , which also holds the German one-year record with 330 foggy days in 1958.

Web links

Wiktionary: Nebeltag  - explanations of meanings, word origins, synonyms, translations

swell

1. ↑ Note: In contrast to the color markings for the temperature thresholds, the 0 ° C line on the graphic is on the border between turquoise and blue. →  Annual cycle of the graphic (animated)
2. ↑ ^{a b c d e f g h i j k l m n o} Climatological knowledge days in the weather dictionary of the German Weather Service
3. ↑ Germany : 15 ° C according to VDI 2067 ; Austria , Switzerland , Liechtenstein : 12 ° C according to Usance
4. ↑ also T _med ≥ 10 ° C: day of the main vegetation period
5. ↑ Brocken at www.harzseite.de , accessed on August 13, 2010
6. ↑ DWD Weather Records - Fog accessed on October 8, 2010