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 Wed 50 50 NW 5 19 N/A N/A N/A N/A N/A
1 AM Wed 49 49 NW 5 19 N/A N/A N/A N/A N/A
2 AM Wed 42 42 NW 5 19 N/A N/A N/A N/A N/A
3 AM Wed 39 39 NW 5 18 N/A N/A N/A N/A N/A
4 AM Wed 42 42 NW 4 17 N/A N/A N/A N/A N/A
5 AM Wed 44 44 NW 4 17 N/A N/A N/A N/A N/A
6 AM Wed 46 46 NW 5 19 N/A N/A N/A N/A N/A
7 AM Wed 54 55 WNW 6 23 N/A N/A N/A N/A N/A
8 AM Wed 62 65 WNW 8 25 N/A N/A N/A N/A N/A
9 AM Wed 66 71 WNW 9 25 N/A N/A N/A N/A N/A
10 AM Wed 69 76 WNW 10 24 N/A N/A N/A N/A N/A
11 AM Wed 72 80 WNW 10 24 N/A N/A N/A N/A N/A
12 Noon Wed 73 82 WNW 11 24 N/A N/A N/A N/A N/A
1 PM Wed 74 82 WNW 12 24 N/A N/A N/A N/A N/A
2 PM Wed 75 82 WNW 12 24 N/A N/A N/A N/A N/A
3 PM Wed 76 81 WNW 13 25 N/A N/A N/A N/A N/A
4 PM Wed 76 79 WNW 13 26 N/A N/A N/A N/A N/A
5 PM Wed 75 76 WNW 12 26 N/A N/A N/A N/A N/A
6 PM Wed 72 72 WNW 11 25 N/A N/A N/A N/A N/A
7 PM Wed 66 66 NW 9 23 N/A N/A N/A N/A N/A
8 PM Wed 60 60 NW 6 20 N/A N/A N/A N/A N/A
9 PM Wed 56 56 NW 5 19 N/A N/A N/A N/A N/A
10 PM Wed 53 53 NNW 4 18 N/A N/A N/A N/A N/A
11 PM Wed 50 50 NNW 3 16 N/A N/A N/A N/A N/A
12 Midnight Thu 47 47 NNW 2 13 N/A N/A N/A N/A N/A
1 AM Thu 46 46 N 2 10 N/A N/A N/A N/A N/A
2 AM Thu 44 44 N 1 9 N/A N/A N/A N/A N/A
3 AM Thu 43 43 N 1 6 N/A N/A N/A N/A N/A
4 AM Thu 42 42 NNW 1 6 N/A N/A N/A N/A N/A
5 AM Thu 41 41 NNW 2 8 N/A N/A N/A N/A N/A
6 AM Thu 45 45 NW 2 9 N/A N/A N/A N/A N/A
7 AM Thu 53 54 WNW 3 12 N/A N/A N/A N/A N/A
8 AM Thu 61 64 W 3 14 N/A N/A N/A N/A N/A
9 AM Thu 66 70 W 4 17 N/A N/A N/A N/A N/A
10 AM Thu 69 75 WNW 5 18 N/A N/A N/A N/A N/A
11 AM Thu 71 78 WNW 6 19 N/A N/A N/A N/A N/A
12 Noon Thu 72 80 WNW 8 20 N/A N/A N/A N/A N/A
1 PM Thu 73 80 WNW 9 20 N/A N/A N/A N/A N/A
2 PM Thu 74 80 WNW 10 20 N/A N/A N/A N/A N/A
3 PM Thu 76 81 WNW 10 21 N/A N/A N/A N/A N/A
4 PM Thu 76 79 WNW 10 21 N/A N/A N/A N/A N/A
5 PM Thu 74 75 WNW 9 21 N/A N/A N/A N/A N/A
6 PM Thu 70 70 NW 6 18 N/A N/A N/A N/A N/A
7 PM Thu 63 63 NW 5 14 N/A N/A N/A N/A N/A
8 PM Thu 57 57 NW 3 11 N/A N/A N/A N/A N/A
9 PM Thu 53 53 NNW 3 10 N/A N/A N/A N/A N/A
10 PM Thu 50 50 NNE 2 11 N/A N/A N/A N/A N/A
11 PM Thu 49 49 NE 2 11 N/A N/A N/A N/A N/A
12 Midnight Fri 48 48 ENE 2 10 N/A N/A N/A N/A N/A
1 AM Fri 47 47 ESE 2 9 N/A N/A N/A N/A N/A
2 AM Fri 45 45 SSE 1 8 N/A N/A N/A N/A N/A
3 AM Fri 43 43 SSE 1 6 N/A N/A N/A N/A N/A
4 AM Fri 42 42 S 1 6 N/A N/A N/A N/A N/A
5 AM Fri 43 43 S 1 6 N/A N/A N/A N/A N/A
6 AM Fri 49 49 SSW 1 6 N/A N/A N/A N/A N/A
7 AM Fri 57 58 SW 2 8 N/A N/A N/A N/A N/A
8 AM Fri 64 67 WSW 2 9 N/A N/A N/A N/A N/A
9 AM Fri 70 74 WSW 3 11 N/A N/A N/A N/A N/A
10 AM Fri 73 79 W 4 14 N/A N/A N/A N/A N/A
11 AM Fri 75 81 W 5 17 N/A N/A N/A N/A N/A
12 Noon Fri 76 83 W 6 18 N/A N/A N/A N/A N/A
1 PM Fri 76 82 W 8 18 N/A N/A N/A N/A N/A
2 PM Fri 76 82 WNW 8 19 N/A N/A N/A N/A N/A
3 PM Fri 77 81 W 9 19 N/A N/A N/A N/A N/A
4 PM Fri 77 79 W 9 20 N/A N/A N/A N/A N/A
5 PM Fri 75 76 W 8 20 N/A N/A N/A N/A N/A
6 PM Fri 71 71 W 6 18 N/A N/A N/A N/A N/A
7 PM Fri 66 66 W 4 14 N/A N/A N/A N/A N/A
8 PM Fri 61 61 WSW 3 11 N/A N/A N/A N/A N/A
9 PM Fri 57 57 SW 2 9 N/A N/A N/A N/A N/A
10 PM Fri 55 55 S 1 9 N/A N/A N/A N/A N/A
11 PM Fri 53 53 S 1 8 N/A N/A N/A N/A N/A
12 Midnight Sat 52 52 S 1 6 N/A N/A N/A N/A N/A
1 AM Sat 50 50 S 1 6 N/A N/A N/A N/A N/A
2 AM Sat 48 48 S 1 6 N/A N/A N/A N/A N/A
3 AM Sat 46 46 S 1 6 N/A N/A N/A N/A N/A
4 AM Sat 44 44 SSE 1 6 N/A N/A N/A N/A N/A
5 AM Sat 45 45 SSE 1 8 N/A N/A N/A N/A N/A
6 AM Sat 50 50 S 2 10 N/A N/A N/A N/A N/A
7 AM Sat 56 57 SSW 3 13 N/A N/A N/A N/A N/A
8 AM Sat 62 64 SW 4 17 N/A N/A N/A N/A N/A
9 AM Sat 66 70 WSW 6 19 N/A N/A N/A N/A N/A
10 AM Sat 69 74 WSW 9 21 N/A N/A N/A N/A N/A
11 AM Sat 70 76 WSW 11 23 N/A N/A N/A N/A N/A
12 Noon Sat 71 77 WSW 12 24 N/A N/A N/A N/A N/A
1 PM Sat 72 78 W 13 24 N/A N/A N/A N/A N/A
2 PM Sat 73 78 W 13 25 N/A N/A N/A N/A N/A
3 PM Sat 74 78 W 14 27 N/A N/A N/A N/A N/A
4 PM Sat 74 76 W 14 29 N/A N/A N/A N/A N/A
5 PM Sat 74 75 W 16 31 N/A N/A N/A N/A N/A
6 PM Sat 68 68 W 13 26 N/A N/A N/A N/A N/A
7 PM Sat 62 62 W 10 23 N/A N/A N/A N/A N/A
8 PM Sat 58 58 W 8 19 N/A N/A N/A N/A N/A
9 PM Sat 54 54 W 5 16 N/A N/A N/A N/A N/A
10 PM Sat 51 51 W 3 13 N/A N/A N/A N/A N/A
11 PM Sat 49 49 W 2 11 N/A N/A N/A N/A N/A
12 Midnight Sun 46 46 W 2 10 N/A N/A N/A N/A N/A
1 AM Sun 44 44 NW 2 9 N/A N/A N/A N/A N/A
2 AM Sun 43 43 NW 2 8 N/A N/A N/A N/A N/A
3 AM Sun 40 40 WNW 2 6 N/A N/A N/A N/A N/A
4 AM Sun 39 39 SW 1 6 N/A N/A N/A N/A N/A
5 AM Sun 40 40 S 1 6 N/A N/A N/A N/A N/A
6 AM Sun 46 46 SSW 2 9 N/A N/A N/A N/A N/A
7 AM Sun 54 55 WSW 3 12 N/A N/A N/A N/A N/A
8 AM Sun 61 64 W 4 14 N/A N/A N/A N/A N/A
9 AM Sun 65 70 W 5 16 N/A N/A N/A N/A N/A
10 AM Sun 68 75 W 8 17 N/A N/A N/A N/A N/A
11 AM Sun 70 77 W 9 18 N/A N/A N/A N/A N/A
12 Noon Sun 72 80 W 10 18 N/A N/A N/A N/A N/A
1 PM Sun 72 79 W 10 19 N/A N/A N/A N/A N/A
2 PM Sun 73 79 W 10 19 N/A N/A N/A N/A N/A
3 PM Sun 74 79 W 10 20 N/A N/A N/A N/A N/A
4 PM Sun 74 77 WNW 10 21 N/A N/A N/A N/A N/A
5 PM Sun 73 74 WNW 10 21 N/A N/A N/A N/A N/A
6 PM Sun 69 69 WNW 9 19 N/A N/A N/A N/A N/A
7 PM Sun 62 62 NW 6 16 N/A N/A N/A N/A N/A
8 PM Sun 57 57 NNW 4 12 N/A N/A N/A N/A N/A
9 PM Sun 53 53 N 3 11 N/A N/A N/A N/A N/A
10 PM Sun 50 50 NE 2 10 N/A N/A N/A N/A N/A
11 PM Sun 48 48 ENE 2 10 N/A N/A N/A N/A N/A
12 Midnight Mon 46 46 ENE 2 9 N/A N/A N/A N/A N/A
1 AM Mon 44 44 E 1 9 N/A N/A N/A N/A N/A
2 AM Mon 43 43 E 1 8 N/A N/A N/A N/A N/A
3 AM Mon 41 41 ESE 1 6 N/A N/A N/A N/A N/A
4 AM Mon 39 39 ESE 1 6 N/A N/A N/A N/A N/A
5 AM Mon 40 40 ESE 1 6 N/A N/A N/A N/A N/A
6 AM Mon 46 46 SE 1 6 N/A N/A N/A N/A N/A
7 AM Mon 54 55 S 1 8 N/A N/A N/A N/A N/A
8 AM Mon 62 65 SSW 2 9 N/A N/A N/A N/A N/A
9 AM Mon 66 71 SSW 3 10 N/A N/A N/A N/A N/A
10 AM Mon 70 76 WSW 4 12 N/A N/A N/A N/A N/A
11 AM Mon 72 78 W 5 14 N/A N/A N/A N/A N/A
12 Noon Mon 74 81 W 6 17 N/A N/A N/A N/A N/A
1 PM Mon 75 82 WNW 8 18 N/A N/A N/A N/A N/A
2 PM Mon 75 81 WNW 9 19 N/A N/A N/A N/A N/A
3 PM Mon 76 80 WNW 9 20 N/A N/A N/A N/A N/A
4 PM Mon 77 80 WNW 9 21 N/A N/A N/A N/A N/A
5 PM Mon 76 77 WNW 9 21 N/A N/A N/A N/A N/A
6 PM Mon 71 71 NW 8 20 N/A N/A N/A N/A N/A
7 PM Mon 65 65 NW 6 17 N/A N/A N/A N/A N/A
8 PM Mon 59 59 NNW 5 14 N/A N/A N/A N/A N/A
9 PM Mon 55 55 N 4 12 N/A N/A N/A N/A N/A
10 PM Mon 52 52 NNE 3 10 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]