Soaring Guidance
Issued by NWS Boise, ID
Issued by NWS Boise, ID
519
UXUS97 KBOI 281305
SRGBOI
Soaring Forecast
National Weather Service Boise, Idaho
705 AM MDT Thursday, August 28, 2025
This forecast is for Thursday, August 28, 2025:
If the trigger temperature of 78.1 F/25.6 C is reached...then
Thermal Soaring Index....................... Good
Maximum rate of lift........................ 632 ft/min (3.2 m/s)
Maximum height of thermals.................. 9418 ft MSL (6557 ft AGL)
Forecast maximum temperature................... 83.0 F/28.8 C
Time of trigger temperature.................... 1345 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................. 6685 ft MSL (3824 ft AGL)
Thermal soaring outlook for Friday 08/29....... Good
Wave Soaring Index............................. Not available
Remarks...
Sunrise/Sunset.................... 07:04:55 / 20:26:56 MDT
Total possible sunshine........... 13 hr 22 min 1 sec (802 min 1 sec)
Altitude of sun at 13:45:56 MDT... 54.42 degrees
Upper air data from rawinsonde observation taken on 08/28/2025 at 0600 MDT
Freezing level.................. 13244 ft MSL (10383 ft AGL)
Convective condensation level... 10275 ft MSL (7414 ft AGL)
Lifted condensation level....... 10134 ft MSL (7273 ft AGL)
Lifted index.................... -0.5
K index......................... +26.2
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 -48.3 -54.9 225 25 13 3.9 2.1 72.8 163.0 28.9 M M
38000 -51.3 -60.3 235 18 9 -14.9 -8.2 59.5 139.0 20.8 M M
36000 -49.7 -57.5 195 11 6 -4.3 -2.4 53.2 127.8 17.0 M M
34000 -45.0 -49.0 190 7 3 9.1 5.0 51.6 124.9 16.4 M M
32000 -39.9 -39.8 200 4 2 9.7 5.3 50.6 123.1 16.0 M M
30000 -34.5 -30.1 255 10 5 9.3 5.1 50.0 122.0 16.0 M M
28000 -29.2 -20.6 285 13 7 9.4 5.2 48.3 119.0 15.1 M M
26000 -24.0 -11.2 250 10 5 8.5 4.6 47.5 117.5 14.8 M M
24000 -19.4 -2.9 250 12 6 5.1 2.8 46.0 114.8 14.0 M M
22000 -14.6 5.7 275 10 5 6.7 3.7 44.7 112.4 13.2 M M
20000 -11.7 10.9 275 10 5 3.2 1.8 41.2 106.2 10.6 M M
18000 -8.9 16.0 270 19 10 3.2 1.8 37.6 99.7 7.8 M M
16000 -5.7 21.7 290 26 13 6.3 3.4 34.6 94.3 5.2 M M
14000 -1.4 29.5 300 25 13 7.8 4.3 32.3 90.2 3.0 M M
12000 3.0 37.4 300 25 13 8.3 4.6 31.0 87.8 1.7 M M
10000 7.3 45.1 305 21 11 8.9 4.9 29.5 85.1 0.2 M M
9000 9.4 48.9 295 14 7 5.8 3.2 28.8 83.8 -0.6 401 2.0
8000 11.4 52.5 285 13 7 8.4 4.6 28.1 82.6 -1.5 311 1.6
7500 12.6 54.7 280 12 6 6.9 3.8 27.8 82.1 -1.8 261 1.3
7000 13.5 56.3 280 13 7 6.2 3.4 27.4 81.3 -2.3 218 1.1
6500 14.0 57.2 280 12 6 2.6 1.4 26.4 79.4 -3.4 190 1.0
6000 14.8 58.6 275 10 5 7.1 3.9 25.8 78.4 -4.0 150 0.8
5500 15.8 60.4 285 10 5 7.0 3.8 25.3 77.6 -4.4 105 0.5
5000 16.8 62.2 305 11 6 7.6 4.2 24.9 76.9 -4.9 60 0.3
4750 17.4 63.3 310 10 5 8.3 4.6 24.8 76.7 -5.0 35 0.2
4500 18.0 64.4 315 8 4 9.0 5.0 24.7 76.5 -5.2 9 0.0
4250 18.6 65.5 330 6 3 8.0 4.4 24.7 76.4 -5.4 M M
4000 19.0 66.2 360 4 2 7.1 3.9 24.5 76.0 -5.7 M M
3750 19.6 67.3 020 3 2 5.9 3.3 24.3 75.7 -5.8 M M
3500 19.7 67.5 030 2 1 -0.8 -0.4 23.8 74.8 -6.4 M M
3400 19.6 67.3 055 2 1 0.3 0.2 22.9 73.2 -7.3 M M
3300 19.6 67.3 055 2 1 0.3 0.2 22.9 73.2 -7.3 M M
3200 19.6 67.3 095 1 1 -4.0 -2.2 22.2 72.0 -8.0 M M
3100 19.6 67.3 095 1 1 -4.0 -2.2 22.2 72.0 -8.0 M M
3000 19.6 67.3 095 1 1 -4.0 -2.2 22.2 72.0 -8.0 M M
2900 16.6 61.9 130 2 1 -99.8 -54.8 18.6 65.4 -11.7 1 0.0
* * * * * * Numerical weather prediction model forecast data valid * * * * * *
08/28/2025 at 0900 MDT | 08/28/2025 at 1200 MDT
|
CAPE... +376.2 LI... -2.4 | CAPE... +1291.0 LI... -4.6
CINH... -117.8 K Index... +25.5 | CINH... -21.9 K Index... +22.3
|
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 -49.6 -57.3 225 18 9 0.6 0.4 | -49.1 -56.4 215 20 10 0.1 0.1
38000 -49.1 -56.4 225 14 7 0.8 0.5 | -48.9 -56.0 210 14 7 0.4 0.2
36000 -48.6 -55.5 220 9 5 1.0 0.6 | -48.7 -55.7 190 10 5 0.5 0.3
34000 -44.9 -48.8 235 7 3 8.2 4.5 | -45.2 -49.4 190 7 4 8.0 4.4
32000 -40.0 -40.0 260 6 3 8.2 4.5 | -40.3 -40.5 205 5 2 8.1 4.4
30000 -35.1 -31.2 260 8 4 8.2 4.5 | -35.4 -31.7 235 6 3 8.2 4.5
28000 -30.1 -22.2 255 9 5 8.3 4.6 | -30.5 -22.9 245 10 5 8.3 4.5
26000 -25.6 -14.1 260 10 5 7.5 4.1 | -26.0 -14.8 255 11 5 7.5 4.1
24000 -20.5 -4.9 265 12 6 7.5 4.1 | -21.0 -5.8 265 12 6 7.2 4.0
22000 -16.1 3.0 270 14 7 7.2 3.9 | -16.7 1.9 270 15 8 6.9 3.8
20000 -12.6 9.3 275 16 8 5.7 3.1 | -13.1 8.4 280 18 9 5.9 3.2
18000 -9.3 15.3 280 18 9 5.9 3.2 | -9.4 15.1 280 19 10 6.4 3.5
16000 -5.6 21.9 290 19 10 6.4 3.5 | -5.7 21.7 285 18 10 6.3 3.4
14000 -1.8 28.8 300 21 11 6.6 3.6 | -1.8 28.8 295 18 9 6.8 3.7
12000 2.1 35.8 305 22 12 7.8 4.3 | 2.2 36.0 305 18 9 7.8 4.3
10000 6.6 43.9 305 19 10 7.7 4.2 | 6.8 44.2 295 14 7 8.7 4.8
9000 8.8 47.8 305 16 8 7.9 4.4 | 9.2 48.6 295 12 6 8.0 4.4
8000 11.7 53.1 305 13 7 11.0 6.0 | 12.1 53.8 295 8 4 10.3 5.7
7500 13.0 55.4 305 12 6 5.7 3.1 | 13.4 56.1 300 7 3 5.4 2.9
7000 13.9 57.0 305 11 6 6.2 3.4 | 14.2 57.6 300 6 3 5.7 3.1
6500 14.6 58.3 305 10 5 5.6 3.1 | 15.2 59.4 305 4 2 8.1 4.5
6000 15.3 59.5 310 8 4 5.2 2.8 | 16.2 61.2 300 3 2 5.6 3.1
5500 15.9 60.6 315 5 2 3.6 2.0 | 16.8 62.2 280 2 1 6.0 3.3
5000 16.5 61.7 320 3 1 5.9 3.2 | 17.6 63.7 245 2 1 7.5 4.1
4750 16.9 62.4 320 2 1 6.0 3.3 | 18.1 64.6 240 2 1 8.6 4.7
4500 17.4 63.3 340 1 1 5.3 2.9 | 18.8 65.8 235 2 1 10.1 5.5
4250 17.7 63.9 000 0 0 4.1 2.2 | 19.5 67.1 235 2 1 9.6 5.3
4000 17.9 64.2 000 0 0 2.8 1.5 | 20.2 68.4 235 2 1 9.3 5.1
3750 18.2 64.8 000 0 0 5.4 3.0 | 20.8 69.4 235 2 1 9.5 5.2
3500 18.6 65.5 000 0 0 5.5 3.0 | 21.6 70.9 240 2 1 11.6 6.4
3400 18.6 65.5 000 0 0 5.5 3.0 | 21.6 70.9 240 2 1 11.6 6.4
3300 18.7 65.7 115 1 0 -1.4 -0.8 | 22.5 72.5 235 2 1 14.6 8.0
3200 18.7 65.7 115 1 0 -1.4 -0.8 | 22.5 72.5 235 2 1 14.6 8.0
3100 18.7 65.7 115 1 0 -1.4 -0.8 | 22.5 72.5 235 2 1 14.6 8.0
3000 18.8 65.8 120 1 1 12.9 7.1 | 23.5 74.3 235 3 1 9.4 5.2
2900 M M M M M M M | M M M M M M M
08/28/2025 at 1500 MDT | 08/28/2025 at 1800 MDT
|
CAPE... +1092.6 LI... -3.8 | CAPE... +695.6 LI... -2.3
CINH... -13.0 K Index... +20.6 | CINH... -25.8 K Index... +12.8
|
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 -57.6 220 23 12 1.2 0.6 | -50.0 -58.0 215 24 12 1.3 0.7
38000 -49.0 -56.2 205 19 10 1.3 0.7 | -49.2 -56.6 210 21 11 1.3 0.7
36000 -48.3 -54.9 190 17 9 1.4 0.8 | -48.4 -55.1 200 19 10 1.5 0.8
34000 -44.9 -48.8 180 13 7 7.3 4.0 | -45.1 -49.2 195 17 9 7.1 3.9
32000 -40.5 -40.9 175 9 5 7.4 4.1 | -40.9 -41.6 185 15 8 7.2 3.9
30000 -35.7 -32.3 200 6 3 8.3 4.5 | -36.1 -33.0 200 12 6 8.4 4.6
28000 -30.7 -23.3 245 8 4 8.3 4.6 | -31.1 -24.0 230 9 5 8.4 4.6
26000 -26.1 -15.0 255 10 5 7.6 4.2 | -26.2 -15.2 245 10 5 8.0 4.4
24000 -20.9 -5.6 265 12 6 7.6 4.2 | -20.9 -5.6 260 12 6 7.6 4.2
22000 -16.4 2.5 280 14 7 7.1 3.9 | -16.4 2.5 275 12 6 7.2 4.0
20000 -12.7 9.1 285 15 8 6.0 3.3 | -12.6 9.3 280 13 7 6.3 3.5
18000 -9.0 15.8 285 16 8 6.4 3.5 | -8.9 16.0 280 15 7 6.3 3.4
16000 -5.2 22.6 280 17 9 6.3 3.5 | -5.0 23.0 280 17 9 6.6 3.6
14000 -1.3 29.7 285 17 9 6.7 3.7 | -0.8 30.6 290 19 10 7.6 4.2
12000 2.7 36.9 295 16 8 7.9 4.3 | 3.9 39.0 290 17 9 7.9 4.3
10000 7.6 45.7 300 14 7 8.7 4.8 | 8.6 47.5 300 13 7 8.7 4.8
9000 10.1 50.2 295 13 6 8.9 4.9 | 11.1 52.0 305 11 5 9.0 5.0
8000 13.5 56.3 285 9 5 6.9 3.8 | 14.7 58.5 310 8 4 7.2 4.0
7500 14.4 57.9 285 7 4 8.6 4.7 | 15.6 60.1 315 7 4 9.3 5.1
7000 15.6 60.1 285 6 3 7.1 3.9 | 16.8 62.2 315 6 3 8.5 4.7
6500 16.6 61.9 285 5 2 9.2 5.1 | 18.1 64.6 315 6 3 9.8 5.4
6000 17.8 64.0 285 4 2 7.8 4.3 | 19.5 67.1 320 5 2 8.5 4.6
5500 19.1 66.4 290 3 2 11.2 6.2 | 20.8 69.4 325 5 2 10.5 5.7
5000 20.5 68.9 290 3 2 10.0 5.5 | 22.2 72.0 335 4 2 10.1 5.5
4750 21.2 70.2 295 3 2 9.8 5.4 | 22.9 73.2 345 4 2 9.5 5.2
4500 22.0 71.6 295 3 2 9.7 5.3 | 23.6 74.5 345 4 2 8.8 4.8
4250 22.7 72.9 290 3 2 10.0 5.5 | 24.3 75.7 340 4 2 9.4 5.2
4000 23.4 74.1 295 3 2 10.5 5.8 | 25.0 77.0 345 3 2 10.0 5.5
3750 24.2 75.6 295 3 2 9.3 5.1 | 25.7 78.3 350 3 2 9.4 5.1
3500 24.9 76.8 290 3 2 11.6 6.4 | 26.3 79.3 340 3 2 8.6 4.7
3400 24.9 76.8 290 3 2 11.6 6.4 | 26.3 79.3 340 3 2 8.6 4.7
3300 25.9 78.6 295 3 2 18.7 10.2 | 26.9 80.4 345 3 2 8.9 4.9
3200 25.9 78.6 295 3 2 18.7 10.2 | 26.9 80.4 345 3 2 8.9 4.9
3100 25.9 78.6 295 3 2 18.7 10.2 | 26.9 80.4 345 3 2 8.9 4.9
3000 27.0 80.6 300 3 2 5.2 2.9 | 27.5 81.5 345 3 2 8.0 4.4
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