Τα νέα του Cross Country - XC news

Summary H μέρα θα είναι γενικά μπλε, με πρωινά Cirrus που θα περάσουν μεταξύ 8.00-11.00 το πρωί. Μετά θα ανοίξει και ο ήλιος θα αρχίσει να ζεσταίνει. Κάποια Cu θα εμφανιστούν το μεσημέρι πάνω από τις μεγαλύτερες κορυφές, ίσως άχνες και στον Κιθαιρώνα, ενώ τα καλύτερα από αυτά θα φαίνονται στον Ελικώνα και στον Παρνασσό. Η Γκιώνα θα φαίνεται χωρίς νέφη, εκτός ίσως από τη μεγάλη κορυφή. Η Βαρομετρική πίεση θα πέσει 3mb και αυτό σημαίνει πιο μικρή πυκνότητα αέρα και λίγο πιο αδύναμα θερμικά από την Παρασκευή.  Η ημέρα θα αρχίσει να δουλεύει από τις 12.00 το πρωί και αυτό θα δώσει 3-4 ώρες διάρκεια πτήσης με θερμικά που πάνω από την αναστροφή των 1300μ θα είναι δυνατά (5μ) ενώ κάτω από αυτό το ύψος οι συνθήκες θα είναι περισσότερο αδύναμες. Τα θερμικά θα είναι καλά από 1200- 2000μ με μέγιστο ύψος 2200μ.  Οι άνεμοι θα είναι ασθενείς <5χαω γενικά από Βόρειες διευθύνσειςκαι θα γίνονται ΒΔ γύρω στα 10χαω πάνω από τα 2100 ενώ μεταξύ 1500-2000 θα υπάρχει ένα τυρβώδες στρώμα που οι άνεμοι θα ε

  Summary The day will start with early Ci clouds from the west at 10.30h Later the Ci sky will clear and around 11.30 first Cu appear above high ground. Around 13.00h nice cloud street to the direction to Tripoli.  At 13.30 Spreadout Cu in the East (Ziria Mt) and in the South East (Parnonas Mt). At 15.00 General Spreadout is expected with shadow from the east side of the cloudstreets to Tripoli. At 16.00 Overdevelopment with potential shower clouds in an unstable line from Ziria to Parnonas, maybe earlier, with a rain risk increasing after 14.30 also in Chelmos area.  The center and west side of the cloud street will be better than the east side. Soaring conditions will start at 11.30 and decline after 16.00 With an average speed around 22kph a 100km XC can be possible More details Barometer: Drops to 1006 by 1mb Temperatures: MaxT 27, minT 18, DT =9 C, relatively stable, low temp contrast and long cycles between thermal triggering. Humidity at 30% Cloudbase initially at 2700, later u

  Summary of the day - General Weather In General a more difficult day than Friday The Barometer is stable and humidity drops meaning a little stronger high thermals but less close to the ground Less clouds in the sky, appearing after 14.00 in the valley. More clouds to the East, SW and west. Winds stronger than Friday from the NE up to 2100. higher they switch to NW up to 18kph at 3600m Top of lift 2900m vs, 3400 of Friday Day will start at 12.00 and will be strong enough for take off after 13.00h A 3 h task is possible Details Barometer 1010mb stable Temperatures Min Τ 24 Max Τ33  ΔΤ 9 C less instability but more air density Dewpoint 7,5 C average in the valley Clouds Forecast Cloudbase depending on the area 3.300m at 15.00h   Cloud tops +500m and Cu last for less time Cloud coverage expected <10% at 15.00, better in Vermio mountain and Pindos Cloud Types Cu and some Ci in the west late  Inversion Levels 800m, 2100m, 3100m Thermals Analysis Thermals at levels +2 m/s <1300m, +4/

  Summary of the day - General Weather Light NNE winds at low levels and NW 15kph at 3000. Post frontal conditions again, meaning higher Baro Pressure, higher air density, stronger inversions. Temperatures are higher but DT 10 C more than yesterday.  Humidity drops 5%, stronger thermals more kinetic energy of the air Clouds appear 30 min later (13.30h) and peak coverage at 15.00h The conditions strengthen 1h later than yesterday, I believe optimal SSS at 14.30h The day will start slowly but will become strong after 15.00h and will be good up to 18.00 Peak of the day will be at 16.00h - later 1 h than the previous day Details Barometer 1009mb increased 3 mb Temperatures Min Τ 23 Max Τ33  ΔΤ 10 C more unstable than yesterday Dewpoint 10 C average in the valley, lower at Mountains Clouds Forecast Cloudbase depending on the area 2600 at 13.30 up to 3100+m after 15.00 at mountains  Cloud tops +1200m similar to yesterday but maturate 30m9n later Cloud coverage expected 40-60% at 15.00, sligh

  Summary of the day - General Weather Post frontal conditions with lots of Cu clouds in the valley, high cloudbases >2600m, high air density, stronger inversions. less temperature contrast on the ground making thermals more difficult to trigger. At first Cu early in the horizon, the after 13.00 the valley works and many Cu appear above flats, later in the day some overdevelopment in the West and South areas of Grevena valley Lower winds increase and turn to North East direction from North we had today which may be critical Details Barometer 1006mb increased  Temperatures Min Τ 22 Max Τ31  ΔΤ 9 C more stable close to the ground than yesterday Dewpoint 12,5 C average Clouds Forecast Cloudbase depending on the area 2600-2900m after 15.00 >3000m  Cloud tops +1200m  Cloud coverage expected 50-60% at 15.00 Cloud Types Cu Inversion Levels 800m, 3000m Thermals Analysis Thermals at levels +2 m/s <1000m, +3,/s < 1300m, +4m/s <1800m, +4,5 >1800m Top of Lift 2600m at 15.00 Zone

  Summary of the day - General Weather After the front passing, a better competition day is expected. However, the unstable air has not left yet and will give a lot of showers all around us in the North (50km) at 14:00h in the West mountains of Pindos at 15.00 and in the east mountain ridges of Edessa, Vermio and Olympos which will be visible from our area but will not affect us directly. But after 15.00 we expect to have shadow in our valley and conditions will weaken. The very wet ground in our valley combined with the increased solar radiation of 800w/m2 will start the day early at 11.00 with the first Cu clouds appearing around 12.00. as the day evolves, more clouds will develop in the valley and after 15.00 we will have increased coverage (60%) and horizontal overdevelopment. We expect a second cloud cycle after 15.00 and the conditions will start declining after 16.30. The temperatures will drop and Winds will be light North at all levels, colder but with 40% humidity. Details Ba