Soaring Guidance
Issued by NWS Boise, ID
Issued by NWS Boise, ID
908
UXUS97 KBOI 311305
SRGBOI
Soaring Forecast
National Weather Service Boise, Idaho
705 AM MDT Sunday, August 31, 2025
This forecast is for Sunday, August 31, 2025:
If the trigger temperature of 89.6 F/32.0 C is reached...then
Thermal Soaring Index....................... Excellent
Maximum rate of lift........................ 1230 ft/min (6.2 m/s)
Maximum height of thermals.................. 16159 ft MSL (13298 ft AGL)
Forecast maximum temperature................... 95.0 F/35.5 C
Time of trigger temperature.................... 1245 MDT
Time of overdevelopment........................ None
Middle/high clouds during soaring window....... None
Surface winds during soaring window............ 20 mph or less
Height of the -3 thermal index................. 6678 ft MSL (3817 ft AGL)
Thermal soaring outlook for Monday 09/01....... Excellent
Wave Soaring Index............................. Not available
Remarks...
Sunrise/Sunset.................... 07:08:16 / 20:21:45 MDT
Total possible sunshine........... 13 hr 13 min 29 sec (793 min 29 sec)
Altitude of sun at 13:45:00 MDT... 53.43 degrees
Upper air data from rawinsonde observation taken on 08/31/2025 at 0600 MDT
Freezing level.................. 14159 ft MSL (11298 ft AGL)
Convective condensation level... 16912 ft MSL (14051 ft AGL)
Lifted condensation level....... 16827 ft MSL (13966 ft AGL)
Lifted index.................... +2.1
K index......................... +16.3
Height Temperature Wind Wind Spd Lapse Rate ConvectionT Thermal Lift Rate
ft MSL deg C deg F Dir kt m/s C/km F/kft deg C deg F Index fpm m/s
--------------------------------------------------------------------------------
40000 -58.2 -72.8 255 41 21 8.2 4.5 57.8 136.0 14.8 M M
38000 -54.6 -66.3 250 44 22 9.4 5.1 54.4 129.9 12.9 M M
36000 -49.7 -57.5 250 40 21 7.9 4.4 53.0 127.3 12.3 M M
34000 -44.9 -48.8 255 34 17 7.2 4.0 51.5 124.6 11.6 M M
32000 -40.0 -40.0 245 32 17 4.9 2.7 49.2 120.6 10.3 M M
30000 -35.3 -31.5 240 30 15 9.7 5.3 47.6 117.7 9.3 M M
28000 -30.1 -22.2 240 23 12 9.2 5.1 46.8 116.3 8.9 M M
26000 -24.9 -12.8 235 17 9 9.1 5.0 45.9 114.7 8.4 M M
24000 -19.9 -3.8 235 13 7 10.5 5.8 44.9 112.9 7.8 M M
22000 -15.1 4.8 240 12 6 7.5 4.1 43.5 110.3 6.9 M M
20000 -10.5 13.1 265 13 7 7.6 4.2 41.9 107.5 5.7 M M
18000 -7.4 18.7 275 9 4 5.8 3.2 38.9 102.0 3.1 M M
16000 -4.1 24.6 055 2 1 8.5 4.7 35.3 95.5 -0.1 1202 6.1
14000 0.6 33.1 295 1 0 9.6 5.2 34.2 93.6 -1.3 1002 5.1
12000 6.2 43.2 170 1 1 9.4 5.2 34.1 93.4 -1.5 774 3.9
10000 11.9 53.4 145 8 4 9.2 5.0 33.8 92.8 -1.8 547 2.8
9000 14.7 58.5 140 9 5 9.2 5.0 33.7 92.6 -1.8 433 2.2
8000 17.5 63.5 145 12 6 8.5 4.7 33.5 92.2 -2.0 320 1.6
7500 18.6 65.5 150 14 7 8.1 4.4 33.2 91.7 -2.4 272 1.4
7000 19.7 67.5 140 18 9 8.3 4.5 32.9 91.3 -2.7 224 1.1
6500 20.8 69.4 140 20 10 6.9 3.8 32.6 90.7 -3.1 176 0.9
6000 21.9 71.4 140 21 11 6.8 3.7 32.2 89.9 -3.5 129 0.7
5500 23.0 73.4 145 22 11 7.1 3.9 31.7 89.1 -3.9 81 0.4
5000 24.0 75.2 155 23 12 6.2 3.4 31.4 88.5 -4.3 35 0.2
4750 24.3 75.7 155 22 11 4.5 2.5 31.0 87.8 -4.7 18 0.1
4500 24.7 76.5 150 23 12 4.9 2.7 30.6 87.1 -5.1 1 0.0
4250 25.0 77.0 145 24 12 4.6 2.5 30.2 86.4 -5.5 M M
4000 25.3 77.5 140 21 11 4.5 2.5 29.8 85.7 -6.0 M M
3750 25.6 78.1 140 18 9 4.7 2.6 29.4 85.0 -6.4 M M
3500 26.0 78.8 135 16 8 3.9 2.2 29.0 84.3 -6.8 M M
3400 26.3 79.3 125 13 7 6.7 3.7 28.7 83.6 -7.2 M M
3300 26.3 79.3 125 13 7 6.7 3.7 28.7 83.6 -7.2 M M
3200 26.6 79.9 115 11 6 -5.1 -2.8 28.2 82.8 -7.7 M M
3100 26.6 79.9 115 11 6 -5.1 -2.8 28.2 82.8 -7.7 M M
3000 26.6 79.9 115 11 6 -5.1 -2.8 28.2 82.8 -7.7 M M
2900 22.8 73.0 130 5 3 -99.0 -54.3 24.1 75.4 -12.2 5 0.0
* * * * * * Numerical weather prediction model forecast data valid * * * * * *
08/31/2025 at 0900 MDT | 08/31/2025 at 1200 MDT
|
CAPE... 0.0 LI... +3.3 | CAPE... +0.1 LI... +2.7
CINH... -0.1 K Index... +15.4 | CINH... -0.1 K Index... +16.7
|
Height Temperature Wnd WndSpd Lapse Rate | Temperature Wnd WndSpd Lapse Rate
ft MSL deg C deg F Dir kt m/s C/km F/kft | deg C deg F Dir kt m/s C/km F/kft
--------------------------------------------------------------------------------
40000 -57.1 -70.8 255 37 19 7.3 4.0 | -56.7 -70.1 250 33 17 6.9 3.8
38000 -53.2 -63.8 255 36 19 6.5 3.6 | -52.9 -63.2 245 33 17 6.3 3.5
36000 -49.3 -56.7 255 36 19 6.5 3.6 | -49.1 -56.4 245 34 17 6.3 3.5
34000 -45.0 -49.0 250 33 17 7.4 4.1 | -44.6 -48.3 245 31 16 7.7 4.2
32000 -40.5 -40.9 245 29 15 7.5 4.1 | -40.0 -40.0 245 28 15 7.7 4.2
30000 -35.9 -32.6 245 26 13 7.8 4.3 | -35.5 -31.9 240 25 13 7.4 4.0
28000 -31.2 -24.2 245 23 12 8.0 4.4 | -31.1 -24.0 230 22 11 7.7 4.2
26000 -25.4 -13.7 240 18 9 8.7 4.8 | -25.0 -13.0 225 19 10 9.0 5.0
24000 -20.4 -4.7 235 13 7 8.0 4.4 | -20.0 -4.0 215 16 8 7.6 4.2
22000 -15.6 3.9 225 8 4 7.6 4.2 | -15.4 4.3 200 13 7 7.3 4.0
20000 -11.3 11.7 200 5 3 7.1 3.9 | -11.2 11.8 195 11 6 7.1 3.9
18000 -7.3 18.9 165 5 3 6.1 3.3 | -7.3 18.9 185 10 5 5.6 3.1
16000 -3.9 25.0 155 6 3 5.7 3.1 | -4.1 24.6 175 9 5 5.6 3.1
14000 0.2 32.4 150 5 3 8.1 4.4 | 0.2 32.4 180 9 4 8.6 4.7
12000 5.4 41.7 160 7 4 9.4 5.2 | 5.5 41.9 175 11 5 9.0 5.0
10000 11.0 51.8 165 11 6 9.1 5.0 | 10.9 51.6 170 14 7 8.7 4.8
9000 14.3 57.7 165 13 7 8.6 4.7 | 14.1 57.4 165 15 8 8.4 4.6
8000 17.1 62.8 160 14 7 6.5 3.6 | 16.9 62.4 160 15 8 6.9 3.8
7500 18.0 64.4 160 15 8 8.2 4.5 | 17.8 64.0 160 17 9 8.3 4.5
7000 19.1 66.4 155 16 8 7.3 4.0 | 18.9 66.0 155 18 9 6.5 3.6
6500 20.1 68.2 150 17 9 7.0 3.8 | 19.9 67.8 150 18 9 8.3 4.6
6000 21.1 70.0 150 18 9 5.2 2.8 | 21.1 70.0 145 18 9 6.7 3.7
5500 21.8 71.2 140 19 10 6.4 3.5 | 22.2 72.0 145 17 9 8.6 4.7
5000 22.8 73.0 140 19 10 7.0 3.9 | 23.3 73.9 145 16 8 6.5 3.6
4750 23.3 73.9 140 20 11 5.1 2.8 | 23.7 74.7 145 16 8 6.6 3.6
4500 23.5 74.3 135 18 9 1.7 0.9 | 24.2 75.6 145 15 8 7.4 4.1
4250 23.4 74.1 135 16 8 -5.0 -2.8 | 24.8 76.6 145 14 7 9.5 5.2
4000 22.7 72.9 130 14 7 -9.5 -5.2 | 25.6 78.1 150 14 7 11.4 6.3
3750 22.0 71.6 130 13 7 -8.0 -4.4 | 26.4 79.5 150 14 7 8.7 4.8
3500 21.4 70.5 120 9 5 -7.7 -4.2 | 27.0 80.6 150 12 6 11.4 6.3
3400 21.4 70.5 120 9 5 -7.7 -4.2 | 27.0 80.6 150 12 6 11.4 6.3
3300 20.8 69.4 115 7 3 -6.9 -3.8 | 28.2 82.8 150 11 6 22.5 12.4
3200 20.8 69.4 115 7 3 -6.9 -3.8 | 28.2 82.8 150 11 6 22.5 12.4
3100 20.8 69.4 115 7 3 -6.9 -3.8 | 28.2 82.8 150 11 6 22.5 12.4
3000 20.2 68.4 110 5 2 -8.5 -4.6 | 29.5 85.1 150 11 6 0.9 0.5
2900 M M M M M M M | M M M M M M M
08/31/2025 at 1500 MDT | 08/31/2025 at 1800 MDT
|
CAPE... 0.0 LI... +2.7 | CAPE... 0.0 LI... +3.0
CINH... -0.1 K Index... +18.2 | CINH... 0.0 K Index... +17.4
|
Height Temperature Wnd WndSpd Lapse Rate | Temperature Wnd WndSpd Lapse Rate
ft MSL deg C deg F Dir kt m/s C/km F/kft | deg C deg F Dir kt m/s C/km F/kft
--------------------------------------------------------------------------------
40000 -56.7 -70.1 245 34 18 7.1 3.9 | -56.9 -70.4 245 33 17 7.2 4.0
38000 -52.8 -63.0 245 33 17 6.5 3.5 | -53.0 -63.4 240 31 16 6.5 3.6
36000 -49.0 -56.2 245 31 16 6.5 3.6 | -49.1 -56.4 235 30 15 6.5 3.6
34000 -43.9 -47.0 240 29 15 7.8 4.3 | -43.9 -47.0 235 28 14 8.0 4.4
32000 -39.3 -38.7 240 27 14 7.8 4.3 | -39.1 -38.4 235 26 13 8.0 4.4
30000 -34.8 -30.6 230 25 13 7.4 4.1 | -34.4 -29.9 225 24 12 7.7 4.2
28000 -30.4 -22.7 220 22 11 8.1 4.4 | -29.8 -21.6 220 23 12 7.8 4.3
26000 -25.1 -13.2 215 21 11 8.7 4.8 | -25.1 -13.2 215 22 12 8.0 4.4
24000 -20.1 -4.2 215 20 10 7.7 4.2 | -20.3 -4.5 215 21 11 8.3 4.5
22000 -15.0 5.0 210 19 10 7.2 4.0 | -15.3 4.5 220 20 10 8.2 4.5
20000 -10.8 12.6 210 17 9 7.1 3.9 | -10.5 13.1 215 16 8 7.1 3.9
18000 -6.7 19.9 200 14 7 6.2 3.4 | -6.5 20.3 210 13 7 6.3 3.5
16000 -3.4 25.9 190 10 5 5.3 2.9 | -2.9 26.8 215 12 6 6.6 3.6
14000 0.8 33.4 185 8 4 8.4 4.6 | 1.5 34.7 205 10 5 8.4 4.6
12000 5.9 42.6 180 10 5 9.1 5.0 | 6.8 44.2 180 9 5 9.3 5.1
10000 11.3 52.3 160 12 6 9.0 4.9 | 12.2 54.0 155 9 5 9.2 5.1
9000 14.0 57.2 155 13 7 9.2 5.1 | 15.0 59.0 145 10 5 9.3 5.1
8000 17.8 64.0 150 14 7 7.1 3.9 | 18.9 66.0 140 11 6 7.0 3.8
7500 18.8 65.8 150 14 7 10.5 5.8 | 19.9 67.8 135 11 6 10.7 5.9
7000 20.3 68.5 150 14 7 8.8 4.8 | 21.3 70.3 135 11 6 9.6 5.3
6500 21.6 70.9 150 14 7 10.6 5.8 | 22.8 73.0 135 11 6 9.8 5.4
6000 23.2 73.8 150 14 7 9.7 5.3 | 24.2 75.6 135 11 6 9.8 5.4
5500 24.6 76.3 150 14 7 10.3 5.7 | 25.7 78.3 135 11 6 10.1 5.5
5000 26.2 79.2 150 14 7 10.8 5.9 | 27.2 81.0 135 11 6 10.7 5.9
4750 27.0 80.6 150 14 7 10.2 5.6 | 28.1 82.6 135 11 6 9.9 5.4
4500 27.7 81.9 150 13 7 9.5 5.2 | 28.7 83.7 135 11 5 8.7 4.8
4250 28.4 83.1 150 13 7 10.0 5.5 | 29.4 84.9 135 10 5 9.5 5.2
4000 29.2 84.6 150 13 6 10.7 5.9 | 30.1 86.2 135 10 5 10.1 5.6
3750 30.0 86.0 150 13 6 9.0 5.0 | 30.9 87.6 135 10 5 9.5 5.2
3500 30.6 87.1 150 11 6 12.2 6.7 | 31.6 88.9 135 9 5 9.8 5.4
3400 30.6 87.1 150 11 6 12.2 6.7 | 31.6 88.9 135 9 5 9.8 5.4
3300 31.9 89.4 150 11 6 22.5 12.4 | 32.3 90.1 135 9 4 11.9 6.5
3200 31.9 89.4 150 11 6 22.5 12.4 | 32.3 90.1 135 9 4 11.9 6.5
3100 31.9 89.4 150 11 6 22.5 12.4 | 32.3 90.1 135 9 4 11.9 6.5
3000 33.3 91.9 150 11 6 6.3 3.4 | 33.2 91.8 140 9 4 9.5 5.2
2900 M M M M M M M | M M M M M M M
________________________________________________________________________________
This product is issued twice per day, once by approximately 0630 MST/0730 MDT
(1330 UTC) and again by approximately 1830 MST/1930 MDT (0130 UTC). It is not
continuously monitored nor updated after its initial issuance.
The information contained herein is based on rawinsonde observation and/or
numerical weather prediction model data taken at the Boise Airport site in
Boise, Idaho at
Latitude: 43.56774
Longitude: -116.21089
Elevation: 2867 feet (874 meters)
and may not be representative of other areas in eastern Oregon or southwest
Idaho. Note that some elevations in numerical weather prediction models differ
from actual station elevations, which can lead to data which appear to be below
ground. Erroneous data such as these should not be used.
The content and format of this report as well as the issuance times are subject
to change without prior notice.
082025