Paragliding World Cup Sopot Weather Forecast 10 Sep

 

Summary of the Day

A frontal zone is approaching in the Balkans from the north. This will bring high humidity in the upper atmosphere, and create high clouds 30km from the NW up to 5000m tops.

The barometer will further increase by 2mb, creating a more stable valley and inversion at 2100m, but more unstable upper atmosphere above 2100 and up to 3300m 

Low humidity is 35% and higher humidity at 60% with a trend to increase after 15.00, expecting some overdevelopment to the West and SW after 16.00h

High cloudbase is expected (3300-3600m) to the west and higher cloud coverage to the west.

Thermals around 2,5m/s close to the ground, and >3m/s above 1800m.

The North winds has dropped below 15kph at all affecting levels, and the switch from South to North winds is at an altitude of 1600m expecting some air mixture and turbulent thermals at this level. 

Details:

Barometric pressure: 1014 mb increase 2mb

Temperatures: 15-29 C  - good thermal triggering with narrow and strong thermals close to the ground

Dewpoint: 8 C  

Humidity at low level: 35% with high air density 

Humidity Boundary layer: 60%  increases 

Cloud base: 3300-3600m

Cloud tops:  +500m, more tho the west, up to 5000m

Cloud types:  Cu, potential Cu Congestus to the west

Cloud Coverage: less than 10% to the east, 80% above the mountains to the west

Inversion levels: 1600m with wind change S to N, inversion to 2100m

Energy flow:  100-200 W/m2

Average Thermal expected +2,5m/s  

Thermal tops: Initially max 1800 in the valley, 2700m above the mountains. 

Thermals at Altitude: +2,5m/s at 1400m, 3m/s at 1800m   

Ideal Thermal Zone:   1700-2200m

WINDS at 14:00 

Wind Gust at Surface: 23kph at 15.00

0m:  South < 10 kph

600m:  South <10 kph

1200m:  South <10 kph

1800m: N <10 kph  

2400m N 15 kph  

3000m NNW 15 kph  

3600m: NW 12 kph

Conditions start Organizing: 13.00

Conditions decline after: 17:00 

Conditions Best Period: 14:00-16:30h   

Conditions Peak time: at 15.00h 

Duration of Conditions:  2,5 h

Calculated XC Speed:  35 kph  

Expected Task Distance   75 Km max

Convergence lines: mountain ridge

Rain Forecast:  West and SW at 16.00h

SKEW-T