St. john _south launch, ca | Parapente Prévisions Description GPS Partager Add To Favorites Ignorer ce spot Modifier
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  • default:
    GFS HRRR 3 km
    GFS HRRR 3
    GEM regional 10
    UKMO Global 10
    DWD ICON Global 11
    GFS GRAPES 13
    GFS global 13
    BOM ACCESS 15
    GEM Global 15
    ECMWF IFS 25
    GFS GraphCast 25
    ECMWF AIFS 28
    ECMWF IFS 44
    JMA gSM 55
    MF Arpege 55
    Modèle GFS HRRR 3 km run: 09/05 16:52 GFS 13 km run: 09/05 16:52
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    Dir. vent
    V. moy. (mph) 5 5 6 7 4 6 9 9 8 5 3 3 1 3 5 2 6 11 13 14 15 17 17 18 18 18 16 13 13 10 10 12 12 13 13 12 10 8 5 4 4 4 4 4 4 5 5 5 5 5 6 6 4 3 2 2 2 1 1 1 2 2 3 3 3 4 3 3 2 2 1 1 2 3 4 4 5 5 4 4 3 3 3 2 2 2 2 3 3 3 3 3 4 5 5 4 4 4 1 1 1 1 2 3 3 4 5 5 5 4 4 4 4 2 1 0 1 2 4 4 4 5 5 5 5 5 5 5 2 1 1 1 2 2 2 3 3 3 2 2 2 1 1 3 2 1 0 1 3 4 6 8 8 8 8 7 6 5 4 3 2 2 3 4 5 6 7 7 8 8 8 7 7 3 2 1 0 2 4 5 6 7 7 8 8 7 6 5 2 1 1 1 2 3 4 4 5 6 6 6 6 5 5 3 2 1 2 4 5 6 8 9 9 9 9 9 8 8 6 5 4 4 5 5 6 7 7 7 7 6 6 5 5
    V. max. (mph) 8 10 12 10 7 10 12 13 13 6 4 7 4 6 10 8 11 15 19 21 24 28 29 31 34 37 34 31 29 15 17 20 24 24 24 23 19 10 6 4 5 5 4 5 5 5 6 6 6 6 6 6 7 3 2 3 3 4 4 2 4 4 4 4 4 6 6 7 2 2 2 2 3 6 6 6 5 4 3 3 2 2 2 2 1 0 1 3 4 5 6 6 6 5 5 4 2 2 2 3 3 3 3 3 4 5 6 5 5 4 3 3 3 3 2 2 2 3 4 5 6 6 6 6 5 4 4 3 3 2 2 2 3 4 5 6 7 6 5 4 4 4 4 3 2 2 3 3 4 4 5 5 5 4 4 4 5 5 2 1 1 2 3 4 5 6 6 6 6 5 4 2 1 2 2 2 3 3 3 4 6 6 6 5 4 3 1 0 2 2 2 2 3 3 4 5 6 5 4 3 2 1 1 2 2 3 3 3 3 4 5 6 6 6 5 5 4 4 3 2 3 3 4 4 5 6 7 7 7 6 5 4 4
    Temp. (°C) 16 17 18 18 19 18 16 15 13 11 13 14 16 16 17 18 18 18 17 16 14 13 11 5 5 5 6 7 8 9 10 10 9 8 6 4 2 0 -2 -2 -1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 -4 -2 0 2 4 3 2 3 5 5 4 4 3 3 0 0 0 2 4 7 9 9 9 9 8 8 7 6 5 4 2 4 6 8 10 12 13 14 15 15 15 14 12 9 7 5 8 10 12 14 15 16 17 18 17 17 16 14 12 9 8 10 12 14 15 16 17 18 18 18 18 17 15 12 10 8 11 13 15 18 19 21 21 22 22 22 21 19 15 13 10 13 15 17 19 21 22 22 22 22 22 21 18 15 13 8 10 12 14 16 18 19 19 19 19 19 18 15 12 9 4 7 10 12 14 16 17 18 18 18 18 17 14 11 8 6 8 11 13 15 17 18 19 19 19 19 18 15 12 10 6 8 10 12 14 15 16 16 16 16 16 15 13 10 8 0 1 3 5 7 9 10 11 12 12 12 12 10 8 6
    Précip. (mm) 0.4 0.9 0.6 0.1 0.1 0.1 0.1 0.1 0.2 0.7 1.1 1.1 0.7 0.5 0.1
    Nébul. tot. (%) 53 45 7 79 100 96 56 37 81 100 26 2 6 8 100 100 100 100 100 100 100 100 100 40 6 100 100 10 6 46 39 94 100 100 100 100 100 100 100 100 100 100 100 100 42 36 89 98 94 8 87 100 100 100 100 91 100 100 100 100 19 100 100 100 84 68 52 65 79 92 95 97 100 100 100 100 1 1 1 2 3 9 16 22 35 48 61 74 87 100 52 56 61 65 68 72 79 86 93 86 80 73 76 79 82 81 63 44 63 81 100 90 80 70 76 83 89 92 95 98 22 17 13 14 16 17 11 6 1 2 3 6 9 12 1 1 2 1 1 1 1 2 1 1 3 2 2 1 1 1 1 2 3 5 6 1 1 2 11 21 30 53 77 100 1 1 1 1 2 1 1 5 9 14 43 71 100
    Nébul. haute (%) 53 45 7 79 100 96 56 37 81 100 26 2 6 8 100 100 100 100 100 100 100 100 100 40 5 100 100 5 53 100 5 98 97 95 66 36 7 10 12 15 43 72 100 89 78 67 1 1 2 7 11 16 13 11 8 29 49 70 41 46 50 56 62 68 76 83 91 76 61 46 49 52 55 80 61 41 61 80 100 89 79 68 74 80 86 87 89 90 19 16 12 13 14 15 10 5 1 1 2 4 6 8 1 1 2 1 1 3 2 2 1 1 1 1 2 3 4 5 1 1 2 10 19 27 51 76 100 1 1 1 1 2 1 1 1 3 4 36 68 100
    Nébul. moy. (%) 89 5 59 5 5 5 100 100 75 5 12 23 35 30 26 21 15 8 2 34 65 97 91 86 80 10 19 29 19 10 27 24 20 15 10 5 3 2 20 39 59 42 24 7 1 1 1 1 2 2 2 2 1 1 2 1 1 1 2 3 10 16 23 5 9 14 43 71 100
    Nébul. basse (%) 5 5 45 37 93 100 100 100 100 100 100 100 100 100 100 100 100 40 34 89 98 94 6 86 100 100 100 100 90 100 96 100 100 10 5 5 5 12 20 27 48 70 91 94 97 100 100 100 100 1 1 1 1 2 3 4 5 21 38 54 57 60 63 1 2 3 20 36 53 53 52 52 2 3 5 21 37 53 1 1 2
    CAPE 0 0 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 0 0 10 50 40 40 40 60 60 60 70 80 70 50 20 10 0 0 0 0 10 30 20 20 100 160 180 190 200 160 130 30 0 0 0 0 0 20 30 30 40 50 50 50 40 30 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 10 20 30 30 30 0 0 0 0 0 0 0 0 0 10 20 60 150 270 320 0 0 20 150 330 510 670 830 950 1040 1090 1090 1020 900 730 0 0 0 0 0 0 0 10 20 60 100 130 120 90 60 0 0 10 70 160 260 370 480 580 670 740 790 800 780 720 0 0 0 0 0 0 0 0 0 0 0 10 130 300 390 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    Plafond (m) 3.2k 3.4k 3.6k 4.0k 4.7k 4.5k 4.1k 3.7k 4.1k 6.0k 5.7k 5.1k 4.7k 4.6k 4.7k 5.3k 5.0k 4.9k 4.5k 4.0k 3.6k 3.6k 3.9k 3.6k 3.5k 3.3k 3.4k 3.6k 3.8k 4.3k 4.3k 4.1k 3.9k 3.7k 3.4k 3.1k 2.7k 2.4k 2.0k 2.0k 2.1k 2.0k 2.0k 2.0k 2.0k 2.0k 2.1k 2.0k 2.0k 2.0k 2.1k 2.2k 2.0k 2.1k 2.2k 2.4k 2.6k 2.8k 2.8k 2.6k 2.5k 2.7k 2.6k 2.5k 2.6k 2.4k 2.3k 2.1k 2.2k 2.2k 2.3k 2.6k 3.0k 3.3k 3.4k 3.4k 3.4k 3.3k 3.1k 3.0k 2.8k 2.6k 2.5k 2.4k 2.6k 2.8k 3.1k 3.4k 3.7k 3.9k 4.1k 4.1k 4.0k 3.9k 3.7k 3.3k 2.9k 2.7k 2.7k 3.0k 3.2k 3.5k 3.7k 3.9k 4.1k 4.2k 4.2k 4.2k 4.2k 3.9k 3.4k 3.0k 2.7k 2.9k 3.1k 3.2k 3.4k 3.7k 3.9k 4.1k 4.1k 4.1k 4.1k 4.1k 3.9k 3.5k 3.1k 2.8k 2.7k 2.9k 3.2k 3.4k 3.8k 4.1k 4.3k 4.4k 4.5k 4.6k 4.6k 4.5k 4.0k 3.4k 3.1k 3.5k 3.7k 3.9k 4.2k 4.4k 4.6k 4.6k 4.6k 4.5k 4.5k 4.4k 4.2k 3.8k 3.3k 3.0k 2.9k 3.1k 3.4k 3.7k 4.0k 4.4k 4.6k 4.8k 4.9k 5.0k 5.0k 4.8k 4.3k 3.8k 3.5k 4.6k 4.6k 4.8k 5.1k 5.5k 5.8k 6.0k 6.0k 5.9k 5.7k 5.6k 5.2k 4.6k 3.9k 3.6k 4.9k 4.8k 4.9k 5.1k 5.4k 5.7k 5.9k 5.9k 5.8k 5.8k 5.6k 5.2k 4.4k 3.8k 3.4k 3.8k 4.0k 4.2k 4.4k 4.7k 4.8k 4.8k 4.7k 4.5k 4.4k 4.3k 4.1k 3.7k 3.4k 3.1k 3.4k 3.5k 3.7k 3.9k 4.2k 4.4k 4.5k 4.5k 4.5k 4.6k 4.7k 4.5k 4.2k 3.7k 3.4k
    St. John Mountain, located in Mendocino National Forest near Stonyford, CA, offers a unique paragliding experience. The South Launch is situated at an elevation of 6300 feet MSL, with landing zones approximately 1200 feet MSL. The site is known for its thermal flying, often reaching altitudes of 10,000 to 12,000 feet MSL, with a record of 14,000 feet MSL. Access to the launch site requires a 4WD vehicle due to the steep, rough dirt road. From the Maxwell exit on I5, head west to Stonyford, then follow M10 west, turn right at Fouts Springs, and follow signs to the top. The drive takes about an hour. The South Launch features a large setup area with a dirt ramp extending over a shallow rocky bowl. Winds are typically light, and it's crucial to watch for movement in the pine tree out front. The West Launch, located 1/3 mile north, offers a steep shale slope near the peak, suitable for launching with a bit of wind. Most flights at St. John are cross-country (XC). The valley winds are variable but usually light from the southeast to northeast. Carry landing streamers for guidance. The primary bailout beyond Fouts Springs consists of three round fields north of the Visitors' Center. It's generally easy to glide out to Stonyford, where there are two insured landing zones in town. Avoid landing on private properties like Flying S or Pendel. The flying season is limited to summer and fall, as the road may be snowed in until May or later. St. John is considered a challenging site, typically requiring H4 ratings, though experienced H3 pilots can fly with proper site introduction. Paragliders usually prefer nearby Potato Hill. Facilities include developed campgrounds at Letts Lake with restrooms, picnic tables, fire pits, and water. There are also undeveloped campgrounds like Dixie Glade. Stonyford offers a small grocery store, gas station, and bar/cafe. For more detailed information, visit [Sonoma Wings St. John Guide](http://sonomawings.com/site-guides/st-john/). Radio communication is on 147.495 MHz (Sonoma Wings drive frequency). In case of emergencies, the nearest help is at the ranger station in Stonyford (530-963-3128). Always check in with local pilots for current conditions before flying. St. John is not a crowded site, and you may find yourself alone on many weekends. For weather forecasts, visit [NOAA Weather Forecast](https://forecast.weather.gov/MapClick.php?lat=39.424220&lon=-122.689222&site=rev&unit=0&lg=en&FcstType=text#.Y1mGpj1Bypo).
    Modifier

    Crée le 24 Dec 2023 par Kiteslave

    Optimal Wind Direction
    SSW SW WSW W

    Optimal Speed (mph)

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