233
UXUS97 KBOI 041305
SRGBOI
SOARING FORECAST
NATIONAL WEATHER SERVICE BOISE, IDAHO
705 AM MDT FRIDAY, SEPTEMBER 4, 2026
THIS FORECAST IS FOR FRIDAY, SEPTEMBER 4, 2026:
IF THE TRIGGER TEMPERATURE OF 60.6 F/15.9 C IS REACHED...THEN
THERMAL SOARING INDEX....................... FAIR
MAXIMUM RATE OF LIFT........................ 370 FT/MIN (1.9 M/S)
MAXIMUM HEIGHT OF THERMALS.................. 9175 FT MSL (6208 FT AGL)
FORECAST MAXIMUM TEMPERATURE................... 67.0 F/19.9 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................. 7176 FT MSL (4209 FT AGL)
THERMAL SOARING OUTLOOK FOR SATURDAY 09/05..... FAIR
WAVE SOARING INDEX............................. NOT AVAILABLE
REMARKS...
SUNRISE/SUNSET.................... 07:12:27 / 20:15:07 MDT
TOTAL POSSIBLE SUNSHINE........... 13 HR 2 MIN 40 SEC (782 MIN 40 SEC)
ALTITUDE OF SUN AT 13:43:47 MDT... 52.16 DEGREES
UPPER AIR DATA FROM RAWINSONDE OBSERVATION TAKEN ON 09/04/2026 AT 0600 MDT
FREEZING LEVEL.................. 10178 FT MSL (7211 FT AGL)
CONVECTIVE CONDENSATION LEVEL... 8783 FT MSL (5816 FT AGL)
LIFTED CONDENSATION LEVEL....... 8901 FT MSL (5934 FT AGL)
LIFTED INDEX.................... +1.2
K INDEX......................... +22.6
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 -50.1 -58.2 225 86 44 1.0 0.6 M M M M M
38000 -48.7 -55.7 225 94 48 2.8 1.6 M M M M M
36000 -46.9 -52.4 225 102 53 2.8 1.6 M M M M M
34000 -44.3 -47.7 225 107 55 7.2 4.0 M M M M M
32000 -40.0 -40.0 225 107 55 7.2 4.0 M M M M M
30000 -35.7 -32.3 225 105 54 6.9 3.8 49.5 121.0 22.1 M M
28000 -31.6 -24.9 220 102 52 6.9 3.8 47.1 116.8 20.9 M M
26000 -28.3 -18.9 220 92 47 3.8 2.1 43.7 110.6 18.7 M M
24000 -25.8 -14.4 220 73 38 4.7 2.6 38.7 101.6 15.2 M M
22000 -22.6 -8.7 215 64 33 5.4 3.0 35.3 95.6 12.8 M M
20000 -19.0 -2.2 210 60 31 6.6 3.6 32.6 90.7 10.8 M M
18000 -15.1 4.8 210 57 29 7.2 4.0 30.6 87.1 9.2 M M
16000 -10.8 12.6 215 47 24 6.8 3.7 28.9 84.1 7.8 M M
14000 -6.9 19.6 230 38 19 6.5 3.6 26.7 80.1 6.0 M M
12000 -3.0 26.6 230 30 15 6.4 3.5 24.7 76.4 4.1 M M
10000 0.1 32.2 235 19 10 4.6 2.5 21.8 71.2 1.5 M M
9000 1.8 35.2 240 13 7 5.1 2.8 19.8 67.6 -0.5 348 1.8
8000 3.4 38.1 255 9 5 6.3 3.5 18.4 65.1 -1.8 272 1.4
7500 4.1 39.4 270 7 4 3.7 2.0 17.7 63.9 -2.5 235 1.2
7000 4.6 40.3 280 7 3 3.3 1.8 16.7 62.1 -3.5 206 1.0
6500 5.2 41.4 295 6 3 4.1 2.3 15.8 60.5 -4.4 173 0.9
6000 5.5 41.9 305 6 3 3.3 1.8 14.8 58.6 -5.5 147 0.7
5500 5.8 42.4 315 7 3 2.3 1.2 13.5 56.4 -6.8 126 0.6
5000 6.4 43.5 315 7 3 4.0 2.2 12.7 54.9 -7.7 93 0.5
4750 6.6 43.9 320 7 4 3.4 1.9 12.3 54.1 -8.2 78 0.4
4500 6.8 44.2 315 7 4 3.7 2.0 11.8 53.2 -8.7 64 0.3
4250 7.1 44.8 310 7 4 4.6 2.5 11.3 52.4 -9.2 48 0.2
4000 7.4 45.3 305 7 3 0.7 0.4 10.9 51.6 -9.7 34 0.2
3750 7.3 45.1 300 7 3 1.6 0.9 10.1 50.2 -10.5 27 0.1
3500 7.7 45.9 300 6 3 7.8 4.3 9.8 49.6 -10.9 8 0.0
3400 7.7 45.9 300 6 3 7.8 4.3 9.8 49.6 -10.9 8 0.0
3300 8.2 46.8 300 5 3 3.7 2.0 9.6 49.3 -11.1 M M
3200 8.2 46.8 300 5 3 3.7 2.0 9.6 49.3 -11.1 M M
3100 8.2 46.8 300 5 3 3.7 2.0 9.6 49.3 -11.1 M M
3000 8.1 46.6 290 5 2 -6.6 -3.6 9.3 48.8 -11.3 M M
2900 M M M M M M M M M M M M
* * * * * * NUMERICAL WEATHER PREDICTION MODEL FORECAST DATA VALID * * * * * *
09/04/2026 AT 0900 MDT | 09/04/2026 AT 1200 MDT
|
CAPE... +1.0 LI... +3.7 | CAPE... 0.0 LI... +2.4
CINH... 0.0 K INDEX... +21.5 | CINH... -0.2 K INDEX... +24.0
|
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 -50.7 -59.3 220 85 44 1.0 0.6 | -50.6 -59.1 220 82 42 1.1 0.6
38000 -49.1 -56.4 220 91 47 3.2 1.7 | -48.9 -56.0 215 84 43 3.3 1.8
36000 -47.2 -53.0 220 96 49 3.2 1.7 | -46.9 -52.4 215 85 44 3.3 1.8
34000 -44.4 -47.9 220 99 51 7.3 4.0 | -43.8 -46.8 215 86 44 6.8 3.7
32000 -40.0 -40.0 220 100 51 7.2 4.0 | -39.7 -39.5 215 86 44 6.8 3.7
30000 -35.7 -32.3 220 99 51 7.0 3.9 | -35.5 -31.9 215 86 44 7.3 4.0
28000 -31.5 -24.7 220 96 49 7.0 3.8 | -31.2 -24.2 215 86 44 7.3 4.0
26000 -27.5 -17.5 220 87 45 5.1 2.8 | -27.2 -17.0 215 84 43 6.1 3.4
24000 -24.4 -11.9 220 76 39 5.1 2.8 | -23.6 -10.5 215 80 41 5.7 3.1
22000 -21.4 -6.5 215 64 33 5.1 2.8 | -20.6 -5.1 215 69 36 5.0 2.7
20000 -18.1 -0.6 215 57 30 5.8 3.2 | -17.3 0.9 215 58 30 4.9 2.7
18000 -14.7 5.5 210 54 28 5.8 3.2 | -14.6 5.7 215 49 25 4.7 2.6
16000 -11.4 11.5 215 50 26 6.2 3.4 | -11.3 11.7 210 41 21 7.4 4.0
14000 -7.6 18.3 225 36 19 6.2 3.4 | -7.5 18.5 210 33 17 5.8 3.2
12000 -4.2 24.4 240 22 11 6.5 3.6 | -4.0 24.8 220 20 10 6.5 3.5
10000 -0.4 31.3 230 12 6 6.3 3.4 | -0.1 31.8 205 12 6 6.9 3.8
9000 1.8 35.2 215 8 4 5.5 3.0 | 1.8 35.2 195 12 6 6.7 3.7
8000 3.5 38.3 210 5 3 6.7 3.7 | 3.7 38.7 190 12 6 7.0 3.8
7500 4.3 39.7 210 4 2 4.3 2.4 | 5.1 41.2 185 10 5 3.3 1.8
7000 5.0 41.0 210 3 2 5.2 2.9 | 5.7 42.3 185 8 4 4.5 2.5
6500 5.7 42.3 205 2 1 4.3 2.3 | 6.5 43.7 175 7 3 4.8 2.6
6000 6.2 43.2 210 2 1 4.0 2.2 | 7.1 44.8 170 5 3 4.6 2.5
5500 6.6 43.9 230 1 0 1.5 0.8 | 7.5 45.5 170 4 2 2.9 1.6
5000 6.8 44.2 275 1 1 1.6 0.9 | 8.1 46.6 185 3 1 3.5 1.9
4750 6.9 44.4 295 2 1 1.0 0.6 | 8.3 46.9 190 2 1 5.0 2.7
4500 7.0 44.6 305 2 1 2.2 1.2 | 8.8 47.8 195 2 1 9.2 5.0
4250 7.1 44.8 310 2 1 2.9 1.6 | 9.5 49.1 200 2 1 10.1 5.5
4000 7.2 45.0 315 2 1 0.3 0.2 | 10.2 50.4 205 2 1 7.5 4.1
3750 7.3 45.1 305 2 1 3.1 1.7 | 10.7 51.3 210 2 1 8.9 4.9
3500 7.7 45.9 305 2 1 9.0 5.0 | 11.5 52.7 210 2 1 12.9 7.1
3400 7.7 45.9 305 2 1 9.0 5.0 | 11.5 52.7 210 2 1 12.9 7.1
3300 8.3 46.9 300 1 1 6.4 3.5 | 12.5 54.5 210 2 1 13.2 7.3
3200 8.3 46.9 300 1 1 6.4 3.5 | 12.5 54.5 210 2 1 13.2 7.3
3100 8.3 46.9 300 1 1 6.4 3.5 | 12.5 54.5 210 2 1 13.2 7.3
3000 8.8 47.8 275 1 1 8.2 4.5 | 13.6 56.5 210 2 1 20.2 11.1
2900 M M M M M M M | M M M M M M M
09/04/2026 AT 1500 MDT | 09/04/2026 AT 1800 MDT
|
CAPE... +1.3 LI... +0.8 | CAPE... 0.0 LI... -0.1
CINH... -15.0 K INDEX... +25.7 | CINH... 0.0 K INDEX... +28.3
|
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 -57.3 220 82 42 2.0 1.1 | -49.2 -56.6 220 83 43 1.6 0.9
38000 -48.1 -54.6 220 85 44 2.7 1.5 | -47.7 -53.9 220 87 45 2.8 1.5
36000 -46.3 -51.3 220 86 44 2.7 1.5 | -45.8 -50.4 215 90 46 2.8 1.5
34000 -43.6 -46.5 215 86 44 6.3 3.4 | -43.4 -46.1 215 90 46 5.4 3.0
32000 -39.9 -39.8 215 86 44 6.3 3.4 | -40.2 -40.4 215 87 45 5.4 3.0
30000 -35.8 -32.4 215 85 44 7.4 4.1 | -36.5 -33.7 215 85 44 7.5 4.1
28000 -31.4 -24.5 215 84 43 7.4 4.1 | -32.0 -25.6 215 83 43 7.5 4.1
26000 -27.1 -16.8 215 83 43 6.9 3.8 | -27.8 -18.0 215 81 41 6.8 3.7
24000 -23.0 -9.4 215 81 42 6.1 3.3 | -23.7 -10.7 215 78 40 6.1 3.3
22000 -19.5 -3.1 215 71 36 5.2 2.8 | -20.1 -4.2 215 68 35 5.4 3.0
20000 -16.8 1.8 210 58 30 4.4 2.4 | -17.0 1.4 210 58 30 5.1 2.8
18000 -14.1 6.6 210 45 23 5.3 2.9 | -13.9 7.0 210 49 25 5.9 3.2
16000 -10.8 12.6 205 37 19 5.9 3.3 | -10.2 13.6 210 43 22 6.7 3.7
14000 -7.4 18.7 200 33 17 6.4 3.5 | -6.5 20.3 205 39 20 6.5 3.6
12000 -3.4 25.9 195 25 13 6.6 3.6 | -2.8 27.0 205 32 16 6.5 3.6
10000 0.1 32.2 190 17 9 6.4 3.5 | 1.2 34.2 205 25 13 7.0 3.8
9000 2.1 35.8 185 14 7 7.3 4.0 | 3.2 37.8 200 20 10 6.8 3.8
8000 4.9 40.8 175 10 5 8.8 4.8 | 5.7 42.3 190 14 7 7.9 4.3
7500 5.9 42.6 170 9 5 4.5 2.5 | 6.6 43.9 180 11 6 4.3 2.4
7000 6.6 43.9 165 7 4 4.5 2.5 | 7.4 45.3 170 9 5 5.3 2.9
6500 7.4 45.3 160 5 3 5.9 3.2 | 8.2 46.8 165 6 3 5.4 3.0
6000 8.1 46.6 170 3 2 4.8 2.6 | 8.9 48.0 150 2 1 5.0 2.8
5500 8.7 47.7 180 2 1 6.4 3.5 | 9.7 49.5 035 1 1 4.9 2.7
5000 10.0 50.0 205 2 1 7.4 4.1 | 10.4 50.7 360 4 2 5.0 2.7
4750 10.5 50.9 235 2 1 7.2 3.9 | 10.8 51.4 355 6 3 5.8 3.2
4500 11.2 52.2 240 2 1 10.7 5.8 | 11.3 52.3 355 6 3 6.7 3.7
4250 12.0 53.6 235 2 1 11.1 6.1 | 11.8 53.2 360 6 3 7.0 3.9
4000 12.7 54.9 240 2 1 7.9 4.3 | 12.3 54.1 360 5 3 7.2 3.9
3750 13.3 55.9 255 3 2 8.6 4.7 | 12.8 55.0 360 6 3 8.0 4.4
3500 14.0 57.2 250 3 1 12.2 6.7 | 13.4 56.1 005 5 3 8.8 4.8
3400 14.0 57.2 250 3 1 12.2 6.7 | 13.4 56.1 005 5 3 8.8 4.8
3300 15.0 59.0 240 3 1 12.7 7.0 | 14.0 57.2 010 4 2 8.0 4.4
3200 15.0 59.0 240 3 1 12.7 7.0 | 14.0 57.2 010 4 2 8.0 4.4
3100 15.0 59.0 240 3 1 12.7 7.0 | 14.0 57.2 010 4 2 8.0 4.4
3000 16.1 61.0 250 3 2 21.4 11.7 | 14.5 58.1 005 4 2 6.8 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
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