The Heavy Snow with Large Flakes (Crystals Agglomeration), Due to the Considerable Humidity in the Entire Air Column, Reached the Valley Floor Near the Riofreddo Hamlet (721m a.s.l.); Western Julian Alps, Tarvisio (UD), FVG, Italia

            15-February-2022: in the narrow and internal valleys, in case of heavy precipitations, it often happens that the thermal 0°C (freezing point in free atmosphere) drops by many hundreds of meters, reaching the bottom of said valleys and causing vertical homothermics.

In this case, the downward drag of the freezing thermal limit, due to the heavy snowfall on the main surrounding mountains was as much as 800m vertically, passing from 1400m a.s.l. at the beginning of precipitation (rainy in the valley) to about 600m a.s.l. in the most intense phase with saturation of water vapor over the entire air column.

It is a particular phenomenon, but very frequent in mountain valleys sheltered (by imposing mountain ranges) from winds that would stir the air while maintaining a thermal gradient that would not be sufficient to keep snow down to the valley floor.

On the Pre-Alps, open to currents from the south, the snow limit remained around 1400m a.s.l., freezing thermal limit in the free atmosphere, only temporarily descending to 1100m a.s.l., while in the internal valleys, sheltered, the snow limit with accumulation on the ground has dropped to 600m a.s.l., having 0°C on an altitude difference of 800m (vertical homothermics).

Taken in: Italy / Friuli Venezia Giulia / Tarvisio / Riofreddo (show map)

Taken on: February 15, 2022

Tags:

time

meteo

flakes

Tarvisio

Riofreddo

Province of Udine

Western Julian Alps « less

Sets appears in: • Alpi Giulie/Julijske Alpe/Julian Alps • Meteorology and Micro-Climatology of Trieste, Karst Region, Eastern Alps, Istra and Mountain-Kvarner Region; Clouds And Phenomena

Groups appears in: • Winter ... Christmas ... New Year ... • Friuli Venezia Giulia Immagini

Camera: Panasonic DMC-FZ2000, f/3.4, 1/320 sec, 15.5mm, ISO 125 (more info) (hide info)

Camera:	Panasonic DMC-FZ2000
Lens:	N/A
Aperture:	f/3.4
Exposure Time:	0.003 sec (1/320)
Focal Length:	15.5mm
ISO:	125
Exposure Bias:	0 EV
Flash:	Off, Did not fire
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Center-weighted average
White Balance:	Auto
Gain Control:	Low gain up
Saturation:	High
Sharpness:	Hard
Color Space:	sRGB
Software:	Adobe Photoshop Lightroom 6.14 (Windows)
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