PWC Gemona Weather forecast July 29th 2026

 

Frontal zones are isolated to the west, improving the local conditions, with less humidity by 10% kai lower Dewpoint temperature to the mountains. This will increase thermal triggering and inversions will be less strong vs. yesterday as the barometer drops by 2mb. Thermals will be similar around 2m/s average, climbing apbove the inversion close to the valley at 1500m, while above higher northern areas thermals can climb +250m to 1750m. The inversion above the mountains will be +200m higher.

No rain is expected, but some overdevelpment with possible shower clouds is expected >50km to the west and in the area of Bovec-Slovenia to the east. later in the day.

Conditions of the day will not last as after 16.00 they will drop and after 17.00 they will decline further. 

3h potential tasks with average speeds of 27+kph 

More Details

Barometric pressure: drops 2 mb 

Temperatures: 22-30 assuming better triggering vs yesterday, but not strong day

Dewpoint: drops to 12  C, South to the valley up to 17 C , north is better

Humidity at low level: 55%  from yesterday 65%

Humidity Boundary layer: 75%

Cloud base: 2300 to the west mountains, 2100 north of Gemona, later +200m. 

Cloud tops: +400m to the east with a convergence line to the same direction

Cloud types: Cu, Some possible showers later in the day 50km to the NW and NE

Cloud Coverage: 0-11%, Deeper in the mountains up to 55% NW and NE 

Inversion levels: 1300m, later 1400, mountains 1700m

Energy flow: 100-200W /m2 assuming slow thermal cycles

Average Thermal expected +2m/s 

Thermal tops: usabvle early to 1500m and 1750 above higher terrain.  

Thermals at Altitude: +2m/s at 500m, +3m/s at 1000m  

Ideal Thermal Zone:   1000m-1500m

WINDS at 14:00

Wind Gust at Surface: Take off 30 kph, valley 25kph

0m:  S 10 kph

600m: S 10 kph

1200m:  S 10 kph 

1800m: non significant from the east

2400m non significant from the west

3000m  

3600m:  

Conditions start Organizing: 11.00   

Conditions decline after: 17:00

Conditions Best Period: 12:00-16:00h  

Conditions Peak time: at 14.00h

Duration of Conditions:  3h

Calculated XC Speed:  27kph

Expected Task Distance  80km max

Convergence lines:  East line to Slovenia

Rain Forecast: 

Skew-T at 14.00h