Soaring Guidance
Issued by NWS Boise, ID
Issued by NWS Boise, ID
313
UXUS97 KBOI 291305
SRGBOI
Soaring Forecast
National Weather Service Boise, Idaho
705 AM MDT Friday, August 29, 2025
This forecast is for Friday, August 29, 2025:
If the trigger temperature of 84.4 F/29.1 C is reached...then
Thermal Soaring Index....................... Excellent
Maximum rate of lift........................ 985 ft/min (5.0 m/s)
Maximum height of thermals.................. 12336 ft MSL (9475 ft AGL)
Forecast maximum temperature................... 89.0 F/32.1 C
Time of trigger temperature.................... 1430 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................. 5240 ft MSL (2379 ft AGL)
Thermal soaring outlook for Saturday 08/30..... Excellent
Wave Soaring Index............................. Not available
Remarks...
Sunrise/Sunset.................... 07:06:02 / 20:25:13 MDT
Total possible sunshine........... 13 hr 19 min 11 sec (799 min 11 sec)
Altitude of sun at 13:45:38 MDT... 54.09 degrees
Upper air data from rawinsonde observation taken on 08/29/2025 at 0600 MDT
Freezing level.................. 13687 ft MSL (10826 ft AGL)
Convective condensation level... 13746 ft MSL (10885 ft AGL)
Lifted condensation level....... 13528 ft MSL (10667 ft AGL)
Lifted index.................... -2.0
K index......................... +25.8
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 -49.6 -57.3 230 45 23 2.5 1.4 71.6 160.8 25.9 M M
38000 -48.2 -54.8 230 34 18 1.3 0.7 64.8 148.7 22.1 M M
36000 -47.3 -53.1 225 23 12 -6.3 -3.4 57.4 135.4 17.6 M M
34000 -44.2 -47.6 250 13 7 5.4 3.0 52.5 126.4 14.6 M M
32000 -41.9 -43.4 230 8 4 7.0 3.8 47.5 117.6 11.4 M M
30000 -37.3 -35.1 225 10 5 8.6 4.7 45.9 114.6 10.5 M M
28000 -31.5 -24.7 245 9 5 9.4 5.2 45.7 114.2 10.6 M M
26000 -26.1 -15.0 265 10 5 2.6 1.4 45.1 113.2 10.4 M M
24000 -22.2 -8.0 270 10 5 9.2 5.1 42.6 108.6 8.6 M M
22000 -18.8 -1.8 275 10 5 8.9 4.9 39.7 103.4 6.5 M M
20000 -13.9 7.0 300 6 3 7.8 4.3 38.5 101.3 5.6 M M
18000 -10.8 12.6 335 3 2 9.2 5.0 34.7 94.4 2.2 M M
16000 -5.9 21.4 350 13 7 8.6 4.7 33.6 92.5 1.3 M M
14000 -0.7 30.7 345 18 9 8.7 4.8 32.9 91.2 0.7 M M
12000 4.3 39.7 330 14 7 8.8 4.8 32.2 90.0 -0.1 746 3.8
10000 9.6 49.3 300 8 4 7.3 4.0 31.8 89.2 -0.8 531 2.7
9000 11.8 53.2 250 4 2 8.5 4.6 31.2 88.1 -1.5 433 2.2
8000 14.3 57.7 280 4 2 8.5 4.7 30.8 87.4 -1.9 330 1.7
7500 15.5 59.9 270 1 1 8.5 4.7 30.6 87.1 -2.2 278 1.4
7000 16.7 62.1 205 3 1 8.5 4.6 30.4 86.7 -2.4 226 1.1
6500 18.1 64.6 205 3 2 8.4 4.6 30.2 86.3 -2.6 172 0.9
6000 19.4 66.9 200 3 2 8.4 4.6 30.0 86.0 -2.7 118 0.6
5500 20.7 69.3 175 3 1 8.3 4.5 29.8 85.6 -2.9 64 0.3
5000 22.0 71.6 150 3 2 6.8 3.7 29.6 85.2 -3.1 10 0.1
4750 22.3 72.1 150 3 1 5.3 2.9 29.2 84.6 -3.4 M M
4500 22.8 73.0 150 3 1 6.4 3.5 29.0 84.1 -3.7 M M
4250 23.2 73.8 155 2 1 5.7 3.1 28.7 83.6 -4.0 M M
4000 23.6 74.5 155 2 1 7.6 4.2 28.4 83.2 -4.4 M M
3750 24.0 75.2 150 2 1 0.8 0.4 28.2 82.7 -4.7 M M
3500 23.4 74.1 140 3 2 -12.8 -7.0 26.9 80.4 -6.0 M M
3400 22.2 72.0 135 4 2 -16.3 -9.0 25.0 77.0 -8.0 M M
3300 22.2 72.0 135 4 2 -16.3 -9.0 25.0 77.0 -8.0 M M
3200 20.9 69.6 130 4 2 -14.0 -7.7 23.1 73.6 -10.1 M M
3100 20.9 69.6 130 4 2 -14.0 -7.7 23.1 73.6 -10.1 M M
3000 20.9 69.6 130 4 2 -14.0 -7.7 23.1 73.6 -10.1 M M
2900 19.6 67.3 130 5 3 -18.9 -10.4 21.3 70.3 -12.1 15 0.1
* * * * * * Numerical weather prediction model forecast data valid * * * * * *
08/29/2025 at 0900 MDT | 08/29/2025 at 1200 MDT
|
CAPE... 0.0 LI... -2.3 | CAPE... +487.0 LI... -2.4
CINH... 0.0 K Index... +26.2 | CINH... -105.4 K Index... +24.5
|
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 -49.8 -57.6 225 37 19 2.0 1.1 | -50.1 -58.2 215 32 16 1.6 0.9
38000 -48.8 -55.8 225 29 15 1.7 0.9 | -49.4 -56.9 220 25 13 1.3 0.7
36000 -47.7 -53.9 225 21 11 1.7 1.0 | -48.5 -55.3 230 17 9 1.3 0.7
34000 -45.0 -49.0 230 15 8 5.6 3.1 | -45.8 -50.4 230 13 7 6.1 3.3
32000 -41.7 -43.1 240 10 5 5.7 3.1 | -42.1 -43.8 235 9 5 6.1 3.3
30000 -37.5 -35.5 245 8 4 7.7 4.2 | -37.9 -36.2 235 8 4 7.6 4.2
28000 -32.9 -27.2 240 8 4 7.7 4.2 | -33.4 -28.1 240 8 4 7.6 4.2
26000 -28.1 -18.6 255 8 4 8.1 4.4 | -28.5 -19.3 250 7 4 8.1 4.5
24000 -23.3 -9.9 265 9 4 8.0 4.4 | -23.7 -10.7 270 7 3 8.0 4.4
22000 -17.9 -0.2 275 9 5 7.4 4.1 | -18.3 -0.9 290 9 5 7.5 4.1
20000 -14.2 6.4 285 8 4 6.1 3.4 | -14.4 6.1 310 8 4 6.6 3.6
18000 -10.7 12.7 310 7 4 6.6 3.6 | -10.4 13.3 330 8 4 7.0 3.8
16000 -6.4 20.5 335 12 6 7.6 4.1 | -6.1 21.0 345 11 6 7.4 4.1
14000 -1.8 28.8 330 12 6 8.9 4.9 | -1.5 29.3 335 12 6 8.4 4.6
12000 3.6 38.5 315 10 5 9.2 5.1 | 3.8 38.8 325 10 5 9.2 5.0
10000 8.8 47.8 285 7 4 8.4 4.6 | 9.1 48.4 295 7 4 8.6 4.7
9000 11.1 52.0 265 6 3 8.4 4.6 | 11.5 52.7 275 5 3 8.4 4.6
8000 14.5 58.1 235 4 2 6.7 3.7 | 14.6 58.3 230 3 2 6.9 3.8
7500 15.4 59.7 215 4 2 8.4 4.6 | 15.5 59.9 215 3 2 7.6 4.2
7000 16.5 61.7 205 4 2 7.2 3.9 | 16.5 61.7 195 4 2 6.6 3.6
6500 17.5 63.5 190 4 2 6.7 3.6 | 17.4 63.3 175 4 2 6.1 3.3
6000 18.4 65.1 180 4 2 5.0 2.7 | 18.2 64.8 160 4 2 4.5 2.5
5500 19.0 66.2 165 4 2 5.4 2.9 | 18.9 66.0 160 4 2 6.2 3.4
5000 19.6 67.3 160 4 2 2.2 1.2 | 19.8 67.6 165 4 2 6.0 3.3
4750 19.8 67.6 160 5 3 2.0 1.1 | 20.2 68.4 170 4 2 7.7 4.3
4500 20.0 68.0 155 5 3 2.0 1.1 | 20.9 69.6 170 4 2 10.1 5.6
4250 20.1 68.2 145 5 3 1.2 0.7 | 21.6 70.9 175 4 2 9.8 5.4
4000 20.2 68.4 140 5 3 0.2 0.1 | 22.3 72.1 175 3 2 9.6 5.2
3750 20.2 68.4 135 5 3 2.2 1.2 | 23.0 73.4 180 3 2 9.4 5.2
3500 20.3 68.5 110 4 2 -0.6 -0.3 | 23.7 74.7 185 3 2 11.8 6.5
3400 20.3 68.5 110 4 2 -0.6 -0.3 | 23.7 74.7 185 3 2 11.8 6.5
3300 19.9 67.8 105 3 2 -10.2 -5.6 | 24.8 76.6 185 3 2 16.3 9.0
3200 19.9 67.8 105 3 2 -10.2 -5.6 | 24.8 76.6 185 3 2 16.3 9.0
3100 19.9 67.8 105 3 2 -10.2 -5.6 | 24.8 76.6 185 3 2 16.3 9.0
3000 19.4 66.9 095 3 2 8.4 4.6 | 25.8 78.4 185 3 2 8.2 4.5
2900 M M M M M M M | M M M M M M M
08/29/2025 at 1500 MDT | 08/29/2025 at 1800 MDT
|
CAPE... +981.7 LI... -3.7 | CAPE... +533.5 LI... -2.2
CINH... -21.7 K Index... +16.9 | CINH... -30.3 K Index... +15.9
|
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 -52.0 -61.6 215 26 13 0.9 0.5 | -53.5 -64.3 245 18 9 0.8 0.4
38000 -50.9 -59.6 225 20 10 1.9 1.0 | -52.1 -61.8 255 17 9 2.5 1.4
36000 -49.7 -57.5 240 14 7 1.9 1.1 | -50.6 -59.1 260 17 9 2.5 1.4
34000 -46.4 -51.5 245 13 7 7.2 3.9 | -46.8 -52.2 260 17 9 7.5 4.1
32000 -42.1 -43.8 240 12 6 7.2 3.9 | -42.3 -44.1 260 17 9 7.5 4.1
30000 -37.6 -35.7 245 11 5 7.6 4.2 | -37.7 -35.9 260 15 8 7.7 4.2
28000 -33.0 -27.4 245 9 5 7.6 4.2 | -33.1 -27.6 265 13 7 7.7 4.2
26000 -28.4 -19.1 260 7 3 7.8 4.3 | -28.3 -18.9 270 10 5 8.1 4.4
24000 -23.7 -10.7 285 6 3 7.9 4.3 | -23.6 -10.5 290 8 4 7.5 4.1
22000 -18.4 -1.1 310 8 4 7.6 4.2 | -19.1 -2.4 315 7 4 7.6 4.1
20000 -14.2 6.4 320 7 4 7.1 3.9 | -14.1 6.6 330 7 3 7.4 4.1
18000 -10.0 14.0 335 8 4 7.1 3.9 | -9.8 14.4 340 7 4 7.4 4.1
16000 -5.7 21.7 345 10 5 7.4 4.1 | -5.3 22.5 345 8 4 7.9 4.3
14000 -1.0 30.2 350 12 6 8.6 4.7 | -0.4 31.3 355 10 5 8.7 4.8
12000 4.2 39.6 345 10 5 8.9 4.9 | 4.7 40.5 350 12 6 8.7 4.8
10000 9.5 49.1 325 8 4 9.2 5.0 | 10.0 50.0 335 10 5 9.1 5.0
9000 12.2 54.0 310 7 4 9.1 5.0 | 12.6 54.7 330 9 4 8.9 4.9
8000 15.6 60.1 290 5 3 6.7 3.7 | 15.4 59.7 325 8 4 12.1 6.6
7500 16.4 61.5 280 5 2 8.7 4.8 | 17.2 63.0 320 8 4 10.3 5.6
7000 17.5 63.5 270 4 2 7.5 4.1 | 18.5 65.3 320 8 4 8.3 4.6
6500 18.6 65.5 270 3 2 9.1 5.0 | 19.8 67.6 325 7 4 10.0 5.5
6000 19.8 67.6 270 3 2 8.3 4.6 | 21.2 70.2 320 7 4 8.5 4.7
5500 21.1 70.0 275 3 2 10.1 5.5 | 22.5 72.5 325 7 4 10.5 5.8
5000 22.6 72.7 275 3 2 10.4 5.7 | 23.9 75.0 320 7 4 9.8 5.4
4750 23.3 73.9 275 4 2 10.1 5.5 | 24.6 76.3 320 7 4 9.4 5.1
4500 24.1 75.4 275 4 2 9.8 5.4 | 25.3 77.5 320 7 4 9.1 5.0
4250 24.8 76.6 275 3 2 10.1 5.5 | 25.9 78.6 320 7 4 9.7 5.3
4000 25.6 78.1 280 4 2 10.9 6.0 | 26.7 80.1 320 7 4 10.6 5.8
3750 26.4 79.5 280 4 2 8.8 4.8 | 27.5 81.5 315 7 4 9.3 5.1
3500 27.0 80.6 280 3 2 12.1 6.6 | 28.1 82.6 320 6 3 9.4 5.2
3400 27.0 80.6 280 3 2 12.1 6.6 | 28.1 82.6 320 6 3 9.4 5.2
3300 28.3 82.9 280 4 2 23.3 12.8 | 28.9 84.0 315 6 3 12.8 7.0
3200 28.3 82.9 280 4 2 23.3 12.8 | 28.9 84.0 315 6 3 12.8 7.0
3100 28.3 82.9 280 4 2 23.3 12.8 | 28.9 84.0 315 6 3 12.8 7.0
3000 29.6 85.3 280 4 2 2.1 1.2 | 29.7 85.5 315 7 3 6.9 3.8
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