Detailed Predictions for: Mt Crested Butte
Launch Lat, Long, Altitude (f): 38.94, -106.9656, 11500
LZ Altitude (f): 8700
Sounding

Station:

KGJT

Date/Time UTC:

N/A

Temp/Wind data from:

NOAA Digital Forecast

Site Forecasts
Time
(Local)
High
Temp

Puddle
Temp

Wind
(mph)
Wind
Gust
Thermal
Ceiling

(ft)
Soaring
Ceiling

(ft)
Above
Launch

(ft)
Thermal
Type
Thermal
Index

(F)
12 Midnight Fri 46 46 NNE 4 5 N/A N/A N/A N/A N/A
1 AM Fri 45 45 NE 4 4 N/A N/A N/A N/A N/A
2 AM Fri 44 44 ESE 2 5 N/A N/A N/A N/A N/A
3 AM Fri 42 42 NNW 3 8 N/A N/A N/A N/A N/A
4 AM Fri 42 42 SSW 2 4 N/A N/A N/A N/A N/A
5 AM Fri 34 34 NNW 2 6 N/A N/A N/A N/A N/A
6 AM Fri 42 42 NW 2 5 N/A N/A N/A N/A N/A
7 AM Fri 49 49 W 1 5 N/A N/A N/A N/A N/A
8 AM Fri 56 57 W 1 4 N/A N/A N/A N/A N/A
9 AM Fri 62 64 WSW 3 10 N/A N/A N/A N/A N/A
10 AM Fri 67 70 W 6 16 N/A N/A N/A N/A N/A
11 AM Fri 70 75 W 9 19 N/A N/A N/A N/A N/A
12 Noon Fri 72 76 W 10 20 N/A N/A N/A N/A N/A
1 PM Fri 72 76 W 10 21 N/A N/A N/A N/A N/A
2 PM Fri 72 75 W 10 21 N/A N/A N/A N/A N/A
3 PM Fri 71 73 WNW 10 21 N/A N/A N/A N/A N/A
4 PM Fri 70 71 W 9 20 N/A N/A N/A N/A N/A
5 PM Fri 68 68 W 8 19 N/A N/A N/A N/A N/A
6 PM Fri 64 64 WNW 5 16 N/A N/A N/A N/A N/A
7 PM Fri 57 57 NNW 4 12 N/A N/A N/A N/A N/A
8 PM Fri 54 54 N 3 10 N/A N/A N/A N/A N/A
9 PM Fri 52 52 N 3 9 N/A N/A N/A N/A N/A
10 PM Fri 50 50 NNW 3 8 N/A N/A N/A N/A N/A
11 PM Fri 49 49 N 3 8 N/A N/A N/A N/A N/A
12 Midnight Sat 47 47 N 2 8 N/A N/A N/A N/A N/A
1 AM Sat 46 46 NNE 2 6 N/A N/A N/A N/A N/A
2 AM Sat 45 45 N 2 8 N/A N/A N/A N/A N/A
3 AM Sat 44 44 N 2 6 N/A N/A N/A N/A N/A
4 AM Sat 43 43 NNE 2 5 N/A N/A N/A N/A N/A
5 AM Sat 42 42 NNE 1 5 N/A N/A N/A N/A N/A
6 AM Sat 42 42 NNE 1 4 N/A N/A N/A N/A N/A
7 AM Sat 48 48 SSE 0 3 N/A N/A N/A N/A N/A
8 AM Sat 57 58 S 1 5 N/A N/A N/A N/A N/A
9 AM Sat 63 65 SW 2 9 N/A N/A N/A N/A N/A
10 AM Sat 67 69 WSW 4 12 N/A N/A N/A N/A N/A
11 AM Sat 69 71 WSW 5 14 N/A N/A N/A N/A N/A
12 Noon Sat 71 73 WSW 6 17 N/A N/A N/A N/A N/A
1 PM Sat 72 75 W 8 18 N/A N/A N/A N/A N/A
2 PM Sat 73 76 W 8 18 N/A N/A N/A N/A N/A
3 PM Sat 73 75 W 8 18 N/A N/A N/A N/A N/A
4 PM Sat 72 73 W 8 18 N/A N/A N/A N/A N/A
5 PM Sat 70 70 W 6 17 N/A N/A N/A N/A N/A
6 PM Sat 66 66 W 4 13 N/A N/A N/A N/A N/A
7 PM Sat 61 61 WSW 3 10 N/A N/A N/A N/A N/A
8 PM Sat 56 56 SSW 2 8 N/A N/A N/A N/A N/A
9 PM Sat 53 53 SSW 2 8 N/A N/A N/A N/A N/A
10 PM Sat 51 51 S 2 9 N/A N/A N/A N/A N/A
11 PM Sat 50 50 SSE 3 10 N/A N/A N/A N/A N/A
12 Midnight Sun 50 50 SSE 4 11 N/A N/A N/A N/A N/A
1 AM Sun 48 48 SSE 5 12 N/A N/A N/A N/A N/A
2 AM Sun 47 47 SSE 5 13 N/A N/A N/A N/A N/A
3 AM Sun 45 45 SSE 5 12 N/A N/A N/A N/A N/A
4 AM Sun 43 43 SSE 4 11 N/A N/A N/A N/A N/A
5 AM Sun 44 44 SSE 4 11 N/A N/A N/A N/A N/A
6 AM Sun 47 47 S 4 12 N/A N/A N/A N/A N/A
7 AM Sun 51 51 S 4 13 N/A N/A N/A N/A N/A
8 AM Sun 56 57 SSW 5 16 N/A N/A N/A N/A N/A
9 AM Sun 61 63 SSW 6 18 N/A N/A N/A N/A N/A
10 AM Sun 65 67 SW 9 20 N/A N/A N/A N/A N/A
11 AM Sun 68 69 WSW 10 21 N/A N/A N/A N/A N/A
12 Noon Sun 69 70 WSW 10 23 N/A N/A N/A N/A N/A
1 PM Sun 69 70 WSW 10 23 N/A N/A N/A N/A N/A
2 PM Sun 69 70 WSW 10 23 N/A N/A N/A N/A N/A
3 PM Sun 68 68 WSW 10 23 N/A N/A N/A N/A N/A
4 PM Sun 68 68 WSW 9 23 N/A N/A N/A N/A N/A
5 PM Sun 66 66 WSW 9 23 N/A N/A N/A N/A N/A
6 PM Sun 63 63 SW 9 24 N/A N/A N/A N/A N/A
7 PM Sun 59 59 SSW 9 25 N/A N/A N/A N/A N/A
8 PM Sun 55 55 S 9 26 N/A N/A N/A N/A N/A
9 PM Sun 53 53 S 9 26 N/A N/A N/A N/A N/A
10 PM Sun 51 51 S 8 26 N/A N/A N/A N/A N/A
11 PM Sun 50 50 S 8 25 N/A N/A N/A N/A N/A
12 Midnight Mon 49 49 S 8 24 N/A N/A N/A N/A N/A
1 AM Mon 48 48 S 6 23 N/A N/A N/A N/A N/A
2 AM Mon 46 46 S 6 21 N/A N/A N/A N/A N/A
3 AM Mon 45 45 S 5 19 N/A N/A N/A N/A N/A
4 AM Mon 43 43 SSW 5 17 N/A N/A N/A N/A N/A
5 AM Mon 44 44 SSW 4 14 N/A N/A N/A N/A N/A
6 AM Mon 45 45 SSW 4 13 N/A N/A N/A N/A N/A
7 AM Mon 48 48 SW 4 13 N/A N/A N/A N/A N/A
8 AM Mon 52 52 SW 4 14 N/A N/A N/A N/A N/A
9 AM Mon 56 56 WSW 5 16 N/A N/A N/A N/A N/A
10 AM Mon 60 61 WSW 5 18 N/A N/A N/A N/A N/A
11 AM Mon 63 64 WSW 6 19 N/A N/A N/A N/A N/A
12 Noon Mon 65 67 WSW 8 20 N/A N/A N/A N/A N/A
1 PM Mon 66 67 W 9 20 N/A N/A N/A N/A N/A
2 PM Mon 66 67 W 9 20 N/A N/A N/A N/A N/A
3 PM Mon 66 67 W 9 20 N/A N/A N/A N/A N/A
4 PM Mon 65 65 W 8 19 N/A N/A N/A N/A N/A
5 PM Mon 64 64 W 6 17 N/A N/A N/A N/A N/A
6 PM Mon 60 60 WSW 4 12 N/A N/A N/A N/A N/A
7 PM Mon 56 56 SW 3 9 N/A N/A N/A N/A N/A
8 PM Mon 52 52 SW 2 6 N/A N/A N/A N/A N/A
9 PM Mon 50 50 SSW 2 5 N/A N/A N/A N/A N/A
10 PM Mon 49 49 S 2 5 N/A N/A N/A N/A N/A
11 PM Mon 48 48 SSE 2 5 N/A N/A N/A N/A N/A
12 Midnight Tue 46 46 SSE 2 6 N/A N/A N/A N/A N/A
1 AM Tue 45 45 SSE 2 8 N/A N/A N/A N/A N/A
2 AM Tue 44 44 SSE 2 9 N/A N/A N/A N/A N/A
3 AM Tue 42 42 SSE 2 9 N/A N/A N/A N/A N/A
4 AM Tue 42 42 SSE 2 8 N/A N/A N/A N/A N/A
5 AM Tue 42 42 SSE 2 6 N/A N/A N/A N/A N/A
6 AM Tue 45 45 SSE 2 6 N/A N/A N/A N/A N/A
7 AM Tue 48 48 S 3 8 N/A N/A N/A N/A N/A
8 AM Tue 52 52 S 3 9 N/A N/A N/A N/A N/A
9 AM Tue 56 56 S 4 11 N/A N/A N/A N/A N/A
10 AM Tue 60 60 SW 4 13 N/A N/A N/A N/A N/A
11 AM Tue 63 63 SW 5 16 N/A N/A N/A N/A N/A
12 Noon Tue 65 65 SW 6 17 N/A N/A N/A N/A N/A
1 PM Tue 66 66 WSW 8 18 N/A N/A N/A N/A N/A
2 PM Tue 66 66 WSW 8 18 N/A N/A N/A N/A N/A
3 PM Tue 65 65 WSW 8 18 N/A N/A N/A N/A N/A
4 PM Tue 64 64 WSW 6 17 N/A N/A N/A N/A N/A
5 PM Tue 62 62 WSW 5 16 N/A N/A N/A N/A N/A
6 PM Tue 59 59 SW 4 13 N/A N/A N/A N/A N/A
7 PM Tue 55 55 SSW 4 11 N/A N/A N/A N/A N/A
8 PM Tue 51 51 S 3 9 N/A N/A N/A N/A N/A
9 PM Tue 49 49 S 3 9 N/A N/A N/A N/A N/A
10 PM Tue 48 48 SSE 2 9 N/A N/A N/A N/A N/A
11 PM Tue 47 47 SSE 2 9 N/A N/A N/A N/A N/A
12 Midnight Wed 46 46 SSE 2 9 N/A N/A N/A N/A N/A
1 AM Wed 44 44 SSE 2 8 N/A N/A N/A N/A N/A
2 AM Wed 43 43 SSE 2 8 N/A N/A N/A N/A N/A
3 AM Wed 42 42 SSE 2 8 N/A N/A N/A N/A N/A
4 AM Wed 41 41 SSE 2 6 N/A N/A N/A N/A N/A
5 AM Wed 42 42 SSE 2 6 N/A N/A N/A N/A N/A
6 AM Wed 44 44 S 2 6 N/A N/A N/A N/A N/A
7 AM Wed 48 48 SSW 2 6 N/A N/A N/A N/A N/A
8 AM Wed 53 53 SW 2 8 N/A N/A N/A N/A N/A
9 AM Wed 57 57 WSW 3 10 N/A N/A N/A N/A N/A
10 AM Wed 61 62 WSW 4 12 N/A N/A N/A N/A N/A
11 AM Wed 64 65 WSW 5 14 N/A N/A N/A N/A N/A
12 Noon Wed 66 67 W 6 16 N/A N/A N/A N/A N/A
1 PM Wed 67 68 W 6 17 N/A N/A N/A N/A N/A
2 PM Wed 68 69 W 6 17 N/A N/A N/A N/A N/A
3 PM Wed 68 69 W 6 17 N/A N/A N/A N/A N/A
4 PM Wed 67 67 W 6 16 N/A N/A N/A N/A N/A
5 PM Wed 65 65 W 5 14 N/A N/A N/A N/A N/A
6 PM Wed 61 61 WSW 4 12 N/A N/A N/A N/A N/A
7 PM Wed 56 56 S 4 11 N/A N/A N/A N/A N/A
8 PM Wed 52 52 SSE 3 9 N/A N/A N/A N/A N/A
9 PM Wed 50 50 SE 3 8 N/A N/A N/A N/A N/A
10 PM Wed 48 48 SE 2 6 N/A N/A N/A N/A N/A

DISCLAIMER: These estimates are intended to assist in daily site selection only.  No warranty is made concerning the accuracy of these estimates.  These estimates cannot be used to determine if conditions are safe for flying.  Conditions should be evaluated at the launch site by experienced pilots before launching.

Sounding: This is the site at which the weather balloon was released.  If the flying site predicted is far from the sounding site, the estimate is not valid.  Also, the sounding is done at 12Z (4AM PST).  If a front comes through, the sounding is no longer valid. The sounding becomes less valid later in the day.

Thermal Ceiling: the lower of the height at which the thermal stops rising and the cloud level.  We can't fly into the clouds, so it doesn't matter how much higher the thermal goes.  Remember that we can't get to the top of the thermal because of our sink rate.  Our upper limit will be lower than the reported ceiling.

Soaring Ceiling: We will stop going up when the thermal is rising just fast enough to offset our sink.  It is estimated that this happens when the temperature difference between the thermal and the surrounding air is about 2 degrees F. This number is an estimate of the maximum altitude we might reach if we start at launch height, and should be more reflective of our chances of soaring than the thermal top. Please let me know how this compares with actually flying, and I will adjust it as necessary.

Above Launch: The difference between how high we might get and how high we start. This estimate does not account for ridge lift.

High Temp: This estimate is taken from the National Weather Service or WeatherAPI.com website.  Puddle temperatures can exceed this temperature. 

Puddle Temp: This estimate is based on the High Temp and the National Weather Service or WeatherAPI.com estimate of cloudiness, and the angle of the sun.  When the sun is directly overhead on a sunny day, the puddle temp is esimated to be 25 degrees warmer than the high ambient temperature. This estimate now includes a rigorous calculation of the Sun Angle, and accounts for the seasonal differences in zenith and daylight hours.

Wind: This estimate is taken from the National Weather Service or WeatherAPI.com website.

Wind Gust: This estimate is taken from the National Weather Service or WeatherAPI.com website.

Thermal Type: Blue (no cloud formation) or White (Cloud formation)

Thermal Index: This is the maximum difference in temperature between the rising packet of air (the thermal) and the surrounding air.  The difference in temperature is responsible for the buoyancy of the thermal, and larger temperature differences mean faster rising thermals.  A value of about 10 F or greater often means that the conditions are soarable.  Values above 20 could indicate rowdy thermals.

Validity of estimate: Many factors (including strong wind, fronts, cloud shadows, incorrectly predicted temperatures, etc) can affect the validity of the estimates. 

Author: Tad Hurst

Supported By: Alan Crouse [email protected]