103
UXUS97 KBOI 231305
SRGBOI
SOARING FORECAST
NATIONAL WEATHER SERVICE BOISE, IDAHO
705 AM MDT WEDNESDAY, SEPTEMBER 23, 2026
THIS FORECAST IS FOR WEDNESDAY, SEPTEMBER 23, 2026:
IF THE TRIGGER TEMPERATURE OF 75.5 F/24.2 C IS REACHED...THEN
THERMAL SOARING INDEX....................... EXCELLENT
MAXIMUM RATE OF LIFT........................ 993 FT/MIN (5.0 M/S)
MAXIMUM HEIGHT OF THERMALS.................. 14775 FT MSL (11808 FT AGL)
FORECAST MAXIMUM TEMPERATURE................... 85.0 F/29.9 C
TIME OF TRIGGER TEMPERATURE.................... 1230 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................. 10980 FT MSL (8013 FT AGL)
THERMAL SOARING OUTLOOK FOR THURSDAY 09/24..... EXCELLENT
WAVE SOARING INDEX............................. NOT AVAILABLE
REMARKS...
SUNRISE/SUNSET.................... 07:33:41 / 19:40:34 MDT
TOTAL POSSIBLE SUNSHINE........... 12 HR 6 MIN 52 SEC (726 MIN 52 SEC)
ALTITUDE OF SUN AT 13:37:07 MDT... 45.36 DEGREES
UPPER AIR DATA FROM RAWINSONDE OBSERVATION TAKEN ON 09/23/2026 AT 0600 MDT
FREEZING LEVEL.................. 12166 FT MSL (9199 FT AGL)
CONVECTIVE CONDENSATION LEVEL... 11600 FT MSL (8633 FT AGL)
LIFTED CONDENSATION LEVEL....... 12623 FT MSL (9657 FT AGL)
LIFTED INDEX.................... -3.6
K INDEX......................... +21.6
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 -57.2 -71.0 295 34 17 -1.6 -0.9 M M M M M
38000 -55.3 -67.5 300 35 18 4.1 2.2 M M M M M
36000 -52.9 -63.2 310 36 19 4.1 2.2 M M M M M
34000 -49.3 -56.7 315 36 19 8.0 4.4 M M M M M
32000 -44.6 -48.3 315 34 18 8.0 4.4 M M M M M
30000 -39.7 -39.5 315 32 17 8.2 4.5 43.2 109.7 10.1 M M
28000 -34.2 -29.6 310 30 16 8.2 4.5 41.8 107.2 9.4 M M
26000 -29.5 -21.1 300 26 13 7.7 4.2 40.2 104.3 8.4 M M
24000 -24.9 -12.8 290 21 11 7.3 4.0 38.6 101.6 7.3 M M
22000 -20.5 -4.9 285 16 8 7.4 4.1 36.9 98.3 6.0 M M
20000 -16.6 2.1 280 14 7 6.6 3.6 34.6 94.3 4.2 M M
18000 -12.6 9.3 280 13 7 6.8 3.8 32.5 90.5 2.4 M M
16000 -8.3 17.1 285 14 7 7.5 4.1 30.8 87.4 0.9 M M
14000 -4.0 24.8 285 14 7 7.0 3.9 29.1 84.3 -0.6 926 4.7
12000 0.2 32.4 285 11 6 8.1 4.4 27.4 81.3 -2.4 743 3.8
10000 5.1 41.2 265 4 2 8.6 4.7 26.6 79.9 -3.3 535 2.7
9000 8.3 46.9 215 4 2 8.8 4.8 26.2 79.2 -3.8 402 2.0
8000 10.9 51.6 210 6 3 10.0 5.5 26.0 78.8 -4.2 294 1.5
7500 11.9 53.4 205 6 3 5.1 2.8 25.5 77.9 -4.7 250 1.3
7000 13.0 55.4 190 7 3 7.7 4.2 25.1 77.2 -5.1 204 1.0
6500 13.8 56.8 180 8 4 4.3 2.3 24.5 76.1 -5.8 165 0.8
6000 14.5 58.1 165 10 5 5.4 2.9 23.8 74.9 -6.6 128 0.6
5500 15.2 59.4 155 13 7 5.2 2.9 23.1 73.7 -7.3 92 0.5
5000 16.0 60.8 145 12 6 6.2 3.4 22.5 72.4 -8.1 55 0.3
4750 16.4 61.5 145 13 7 5.8 3.2 22.2 72.0 -8.4 34 0.2
4500 16.7 62.1 140 12 6 4.1 2.2 21.8 71.3 -8.9 18 0.1
4250 17.0 62.6 135 10 5 2.5 1.4 21.4 70.4 -9.4 3 0.0
4000 17.0 62.6 125 10 5 -0.4 -0.2 20.7 69.2 -10.0 M M
3750 17.1 62.8 125 10 5 3.7 2.0 20.0 68.0 -10.7 M M
3500 17.3 63.1 110 9 4 -5.5 -3.0 19.5 67.0 -11.3 M M
3400 17.3 63.1 110 9 4 -5.5 -3.0 19.5 67.0 -11.3 M M
3300 15.8 60.4 100 7 4 -37.8 -20.7 17.4 63.3 -13.3 8 0.0
3200 15.8 60.4 100 7 4 -37.8 -20.7 17.4 63.3 -13.3 8 0.0
3100 15.8 60.4 100 7 4 -37.8 -20.7 17.4 63.3 -13.3 8 0.0
3000 13.2 55.8 090 5 3 -13.8 -7.6 14.3 57.8 -16.2 78 0.4
2900 M M M M M M M M M M M M
* * * * * * NUMERICAL WEATHER PREDICTION MODEL FORECAST DATA VALID * * * * * *
09/23/2026 AT 0900 MDT | 09/23/2026 AT 1200 MDT
|
CAPE... 0.0 LI... -0.1 | CAPE... +68.0 LI... +0.4
CINH... 0.0 K INDEX... +18.4 | CINH... -77.5 K INDEX... +18.8
|
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 -59.0 -74.2 290 36 18 -1.3 -0.7 | -60.8 -77.4 280 40 21 -2.0 -1.1
38000 -56.3 -69.3 300 38 20 5.7 3.1 | -57.3 -71.1 285 41 21 7.0 3.8
36000 -52.8 -63.0 305 41 21 5.7 3.1 | -52.6 -62.7 295 42 22 7.0 3.8
34000 -48.1 -54.6 310 42 22 8.4 4.6 | -47.7 -53.9 300 42 21 8.8 4.8
32000 -43.0 -45.4 310 42 22 8.4 4.6 | -42.4 -44.3 300 39 20 8.8 4.8
30000 -38.1 -36.6 305 39 20 8.1 4.5 | -37.2 -35.0 300 35 18 8.6 4.7
28000 -33.2 -27.8 300 34 17 8.1 4.5 | -32.1 -25.8 305 29 15 8.7 4.8
26000 -28.5 -19.3 295 29 15 7.8 4.3 | -27.4 -17.3 295 26 14 7.7 4.2
24000 -23.9 -11.0 290 25 13 7.2 4.0 | -22.9 -9.2 280 25 13 6.9 3.8
22000 -19.5 -3.1 290 20 10 7.2 4.0 | -18.2 -0.8 270 22 12 7.1 3.9
20000 -15.5 4.1 275 14 7 5.7 3.1 | -14.3 6.3 260 18 9 6.2 3.4
18000 -11.9 10.6 265 12 6 6.3 3.5 | -11.1 12.0 250 16 8 5.0 2.8
16000 -8.0 17.6 265 12 6 6.9 3.8 | -7.7 18.1 250 15 8 6.5 3.6
14000 -3.7 25.3 270 13 7 7.4 4.1 | -3.7 25.3 255 16 8 7.4 4.1
12000 0.4 32.7 265 11 6 8.0 4.4 | 0.8 33.4 260 13 7 8.1 4.4
10000 5.2 41.4 225 7 4 8.6 4.7 | 5.6 42.1 230 9 5 8.4 4.6
9000 7.7 45.9 205 7 4 8.4 4.6 | 8.1 46.6 205 9 5 8.5 4.7
8000 10.8 51.4 195 7 4 9.0 5.0 | 11.2 52.2 185 10 5 8.3 4.6
7500 11.8 53.2 185 7 4 5.0 2.7 | 12.2 54.0 180 10 5 5.7 3.1
7000 12.6 54.7 170 8 4 5.7 3.1 | 13.1 55.6 170 10 5 6.0 3.3
6500 13.2 55.8 165 9 5 4.6 2.5 | 13.9 57.0 160 10 5 5.8 3.2
6000 13.9 57.0 155 11 6 6.2 3.4 | 14.7 58.5 155 11 5 5.2 2.8
5500 14.8 58.6 155 12 6 4.9 2.7 | 15.4 59.7 155 10 5 6.7 3.7
5000 15.4 59.7 150 11 6 4.7 2.6 | 16.3 61.3 155 9 5 6.4 3.5
4750 15.7 60.3 150 12 6 3.6 2.0 | 16.8 62.2 160 9 5 7.6 4.2
4500 15.9 60.6 150 11 5 2.5 1.4 | 17.4 63.3 160 9 4 9.6 5.3
4250 16.0 60.8 145 9 5 0.2 0.1 | 18.1 64.6 160 8 4 10.0 5.5
4000 15.9 60.6 140 8 4 -2.5 -1.4 | 18.9 66.0 160 8 4 10.8 5.9
3750 15.8 60.4 135 8 4 0.7 0.4 | 19.7 67.5 165 8 4 8.8 4.8
3500 15.9 60.6 125 6 3 -0.4 -0.2 | 20.3 68.5 165 7 4 11.6 6.4
3400 15.9 60.6 125 6 3 -0.4 -0.2 | 20.3 68.5 165 7 4 11.6 6.4
3300 15.6 60.1 110 4 2 -10.1 -5.5 | 21.6 70.9 165 7 4 22.4 12.3
3200 15.6 60.1 110 4 2 -10.1 -5.5 | 21.6 70.9 165 7 4 22.4 12.3
3100 15.6 60.1 110 4 2 -10.1 -5.5 | 21.6 70.9 165 7 4 22.4 12.3
3000 15.2 59.4 095 3 2 5.4 3.0 | 22.9 73.2 165 7 4 5.4 3.0
2900 M M M M M M M | M M M M M M M
09/23/2026 AT 1500 MDT | 09/23/2026 AT 1800 MDT
|
CAPE... +39.9 LI... +1.3 | CAPE... 0.0 LI... +2.8
CINH... -12.5 K INDEX... +20.7 | CINH... 0.0 K INDEX... +23.5
|
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 -61.2 -78.2 265 39 20 -0.9 -0.5 | -61.9 -79.4 265 41 21 0.2 0.1
38000 -57.3 -71.1 275 38 19 7.3 4.0 | -57.4 -71.3 270 40 21 8.3 4.5
36000 -52.4 -62.3 285 37 19 7.4 4.0 | -51.8 -61.2 275 40 20 8.3 4.5
34000 -47.4 -53.3 295 36 19 8.7 4.8 | -46.8 -52.2 275 35 18 8.5 4.7
32000 -42.2 -44.0 295 34 18 8.7 4.8 | -41.7 -43.1 270 27 14 8.5 4.7
30000 -37.1 -34.8 295 30 15 8.5 4.7 | -36.6 -33.9 265 25 13 8.4 4.6
28000 -32.0 -25.6 280 25 13 8.5 4.7 | -31.6 -24.9 265 25 13 8.4 4.6
26000 -26.9 -16.4 275 24 12 8.6 4.7 | -26.5 -15.7 260 26 13 8.5 4.7
24000 -21.8 -7.2 270 24 13 7.9 4.3 | -21.5 -6.7 260 28 14 8.2 4.5
22000 -16.6 2.1 270 26 13 7.9 4.3 | -16.0 3.2 265 28 15 8.1 4.4
20000 -13.0 8.6 265 22 12 5.7 3.2 | -12.1 10.2 265 26 13 6.4 3.5
18000 -9.9 14.2 255 19 10 4.5 2.5 | -8.5 16.7 255 24 12 5.4 3.0
16000 -7.1 19.2 250 19 10 5.5 3.0 | -5.8 21.6 245 24 12 4.4 2.4
14000 -3.4 25.9 250 19 10 8.0 4.4 | -2.6 27.3 230 22 11 8.0 4.4
12000 1.4 34.5 245 15 8 8.7 4.8 | 2.2 36.0 225 15 8 9.0 4.9
10000 6.5 43.7 230 9 5 8.5 4.7 | 7.6 45.7 205 8 4 8.7 4.8
9000 9.1 48.4 210 7 4 9.0 4.9 | 10.2 50.4 180 6 3 8.8 4.8
8000 12.6 54.7 180 7 4 8.1 4.5 | 13.7 56.7 140 6 3 8.8 4.8
7500 13.6 56.5 170 7 4 7.9 4.3 | 14.8 58.6 135 7 3 8.2 4.5
7000 14.8 58.6 165 7 4 8.0 4.4 | 16.1 61.0 135 7 4 9.2 5.1
6500 16.0 60.8 160 8 4 9.1 5.0 | 17.5 63.5 135 7 4 9.6 5.3
6000 17.3 63.1 160 7 4 9.1 5.0 | 18.9 66.0 135 7 4 9.9 5.4
5500 18.7 65.7 160 7 4 10.0 5.5 | 20.4 68.7 135 7 4 9.7 5.3
5000 20.1 68.2 160 7 4 10.5 5.8 | 21.9 71.4 135 7 3 10.8 5.9
4750 20.9 69.6 160 7 4 10.2 5.6 | 22.7 72.9 135 7 4 10.3 5.7
4500 21.6 70.9 160 7 4 9.0 4.9 | 23.4 74.1 135 7 3 8.7 4.8
4250 22.3 72.1 160 6 3 10.2 5.6 | 24.1 75.4 135 6 3 9.3 5.1
4000 23.1 73.6 160 6 3 12.2 6.7 | 24.8 76.6 135 6 3 9.9 5.4
3750 24.0 75.2 160 7 3 9.4 5.1 | 25.5 77.9 135 6 3 9.5 5.2
3500 24.6 76.3 160 6 3 11.0 6.0 | 26.2 79.2 135 6 3 9.3 5.1
3400 24.6 76.3 160 6 3 11.0 6.0 | 26.2 79.2 135 6 3 9.3 5.1
3300 25.8 78.4 160 6 3 21.6 11.8 | 26.9 80.4 135 6 3 9.9 5.5
3200 25.8 78.4 160 6 3 21.6 11.8 | 26.9 80.4 135 6 3 9.9 5.5
3100 25.8 78.4 160 6 3 21.6 11.8 | 26.9 80.4 135 6 3 9.9 5.5
3000 27.2 81.0 160 6 3 8.5 4.6 | 27.6 81.7 135 6 3 9.2 5.1
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
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