Cumulonimbus incus mamma 5.6.2013

Observed phenomena: Cumulonimbus incus mamma (cumulonimbus with anvil and mammatus clouds)Date: 5.6.2013Time: 20:40-22:15Observing place: Turku, FinlandObserving method: PhotographyTechnical information about photographing equipment: Olympus μ 1030 SW In the evening of 5th of July 2013, I observed a really magnificent cumulonimbus -cloud in Turku, Finland. The cloud looked like a mature thunderstorm -cloud, but it didn't …

The first thunderstorm of summer 2013

Observed phenomena: ThunderstormObserved storm phenomena: Intense lightning Mammatus clouds Shelf cloud ahead of the cumulonimbus Intense rain Date: 18./19.5.2013Time: 21:50-01:00Observing place: Orimattila, FinlandObserving method: PhotographyTechnical information about photographing equipment: Canon EOS 1100D, objective: Canon EF-S 18-55mm IS The very first thunderstorm of summer 2013 happened during the Atmospheric Optics -meeting in the night between Saturday …

Nacreous clouds observed on Christmas eve 2012

Observed phenomenae: Nacreous clouds (type I)  Crepescular rays Date: 24.12.2012 Time: 16:25 Observing place: Ulvila, Finland Observing method: Photography Technical information about photographing equipment: Camera: Canon EOS 1100D, lens: Canon EF-S 18-55mm Nacreous clouds of type I were observed during many days around mid-winter all over Finland. I was also once able to observe this …

Bright noctilucent clouds 2./3.8.2012

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIb (Bands with sharply defined edged) O (Unusual forms) Brightness of the NLCs: 4 (very bright and attracting the attention of casual observers) Date: 2./3.8.2012 Time: 01:30-02:20 Observing place: Kuru, Ylöjärvi, Finland Observing method: Photography Technical information about photographing equipment: Canon EOS 1100D, Canon EF-S 18-55mm …

Noctilucent clouds 27./28.7.2012

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIIa (Waves, short, straight and narrow streaks) IIIb (Wave-like structure with undulations) O (Unusual forms) Brightness of the NLCs: 3 (clearly visible, standing out sharply against the twilight sky) Date: 27./28.7.2012 Time: 01:30-03:30 Observing place: Perniö, Salo, Finland Observing method: Photography Technical information about photographing equipment: …

Noctilucent clouds 26./27.7.2012

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIb (Bands with sharply defined edged) IIIa (Waves, short, straight and narrow streaks) O (Unusual forms) Brightness of the NLCs: 3 (clearly visible, standing out sharply against the twilight sky) Date: 26./27.7.2012 Time: 00:25-03:25 Observing place: Perniö, Salo, Finland Observing method: Photography Technical information about photographing …

Noctilucent clouds 19./20.7.2012

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIa (Bands with diffuse, blurred edges) IIb (Bands with sharply defined edges) IIIa (Short, straight and narrow streaks) IIIb (Wave-like structure with undulations) O (Unusual forms) Brightness of the NLCs: 3 (clearly visible, standing out sharply against the twilight sky) Colour of the NLCs: pale-blue Upper …

Noctilucent clouds 4./5.7.2012

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIIa (Short, straight and narrow streaks) IIIb (Wave-like structure with undulations) O (Unusual forms) Brightness of the NLCs: 3 (clearly visible, standing out sharply against the twilight sky) Colour of the NLCs: pale-blue Upper limit: 150° Lower limit: 3° Apparent direction of movement: west Date: 4./5.7.2012 …

A cumulonimbus cloud with magnificent mammatus 26.6.2012

Observed phenomena: Mammatus clouds Date: 26.6.2012 Time: 20:23-20:40 Observing place: Ulvila, Finland Observing method: Photography Technical information about photographing equipment: Camera: Canon EOS 1100D, lens: Canon EF-S 18-55mm IS On 26th of June, I observed a really magnificent cumulonimbus cloud with some impressive mammatus! The beginning of this display was a humble one, but it …

7./8.6.2012 First noctilucent clouds of the season!

Observed phenomena: Noctilucent clouds Observed NLC forms: I (Veil) IIb (Bands with sharply defined edged) IIIa (Short, straight and narrow streaks) IVb (Simple curve(s) with angular radius of 3 - 5 degrees) Brightness of the NLCs: 2 (clearly detected, but having low brightness) Colour of the NLCs: pale blue Areal extent of the NLCs: 1/4 …