409
UXUS97 KSLC 211228
SRGSLC
SOARING FORECAST
NATIONAL WEATHER SERVICE SALT LAKE CITY, UTAH
528 AM MST SUNDAY, DECEMBER 21, 2025
THIS FORECAST IS FOR SUNDAY, DECEMBER 21, 2025:
IF THE TRIGGER TEMPERATURE OF 61.8 F/16.6 C IS REACHED...THEN
THERMAL SOARING INDEX....................... POOR
MAXIMUM RATE OF LIFT........................ 0 FT/MIN (0.0 M/S)
MAXIMUM HEIGHT OF THERMALS.................. 7568 FT MSL (2641 FT AGL)
FORECAST MAXIMUM TEMPERATURE................... 58.0 F/14.9 C
TIME OF TRIGGER TEMPERATURE.................... NONE
TIME OF OVERDEVELOPMENT........................ NONE
MIDDLE/HIGH CLOUDS DURING SOARING WINDOW....... BROKEN/OVERCAST OPAQUE MIDDLE
SURFACE WINDS DURING SOARING WINDOW............ 20 MPH OR LESS
HEIGHT OF THE -3 THERMAL INDEX................. 5708 FT MSL (782 FT AGL)
THERMAL SOARING OUTLOOK FOR MONDAY 12/22....... POOR
WAVE SOARING INDEX............................. NOT AVAILABLE
REMARKS...
SUNRISE/SUNSET.................... 07:48:50 / 17:03:30 MST
TOTAL POSSIBLE SUNSHINE........... 9 HR 14 MIN 40 SEC (554 MIN 40 SEC)
ALTITUDE OF SUN AT 12:26:10 MST... 25.50 DEGREES
UPPER AIR DATA FROM RAWINSONDE OBSERVATION TAKEN ON 12/21/2025 AT 0500 MST
FREEZING LEVEL.................. 10857 FT MSL (5930 FT AGL)
CONVECTIVE CONDENSATION LEVEL... 13075 FT MSL (8148 FT AGL)
LIFTED CONDENSATION LEVEL....... 11303 FT MSL (6377 FT AGL)
LIFTED INDEX.................... +5.2
K INDEX......................... +19.9
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
--------------------------------------------------------------------------------
26000 -32.2 -26.0 250 86 44 7.7 4.2 32.8 91.1 14.4 M M
24000 -27.6 -17.7 250 87 45 7.7 4.2 31.4 88.5 13.6 M M
22000 -22.4 -8.3 250 80 41 7.8 4.3 29.7 85.5 12.5 M M
20000 -18.6 -1.5 250 69 35 5.9 3.2 27.3 81.2 10.7 M M
18000 -15.1 4.8 245 57 29 6.2 3.4 24.8 76.6 8.6 M M
16000 -11.3 11.7 245 47 24 6.5 3.6 22.6 72.6 6.8 M M
14000 -7.6 18.3 240 37 19 7.2 4.0 20.3 68.5 4.7 M M
12000 -3.1 26.4 245 32 17 7.8 4.3 18.9 66.0 3.6 M M
10000 2.0 35.6 245 25 13 7.4 4.1 18.0 64.4 2.9 M M
9000 4.3 39.7 235 23 12 7.3 4.0 17.4 63.3 2.3 M M
8000 6.1 43.0 210 21 11 4.9 2.7 15.7 60.2 0.5 M M
7000 7.6 45.7 185 21 11 5.2 2.8 14.3 57.7 -1.0 117 0.6
6000 8.8 47.8 170 21 11 4.1 2.3 12.6 54.6 -2.7 50 0.3
5000 9.7 49.5 160 11 5 4.1 2.3 10.5 50.9 -4.8 M M
* * * * * * NUMERICAL WEATHER PREDICTION MODEL FORECAST DATA VALID * * * * * *
12/21/2025 AT 0800 MST | 12/21/2025 AT 1100 MST
|
CAPE... 0.0 LI... +1.7 | CAPE... 0.0 LI... +0.7
CINH... -0.0 K INDEX... +23.4 | CINH... -0.1 K INDEX... +24.7
|
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
--------------------------------------------------------------------------------
26000 -30.7 -23.3 270 64 33 7.5 4.1 | -30.5 -22.9 260 64 33 7.9 4.4
24000 -26.2 -15.2 265 59 30 7.2 3.9 | -25.8 -14.4 260 63 33 7.0 3.9
22000 -21.7 -7.1 265 57 29 6.8 3.8 | -21.9 -7.4 260 61 32 6.7 3.7
20000 -17.9 -0.2 260 54 28 6.1 3.3 | -18.2 -0.8 255 57 29 6.0 3.3
18000 -14.2 6.4 255 50 26 6.7 3.7 | -14.2 6.4 255 50 26 6.3 3.5
16000 -10.5 13.1 250 47 24 6.4 3.5 | -10.3 13.5 255 45 23 6.7 3.7
14000 -6.9 19.6 245 44 23 6.0 3.3 | -6.4 20.5 250 43 22 7.0 3.9
12000 -3.3 26.1 240 35 18 6.8 3.7 | -1.9 28.6 245 41 21 8.2 4.5
10000 1.5 34.7 230 27 14 8.6 4.7 | 3.0 37.4 235 37 19 7.6 4.2
9000 4.1 39.4 225 25 13 8.7 4.8 | 5.2 41.4 230 35 18 7.1 3.9
8000 6.5 43.7 215 24 12 6.3 3.4 | 7.0 44.6 215 33 17 4.7 2.6
7000 8.1 46.6 200 24 13 4.0 2.2 | 8.3 46.9 200 30 16 2.9 1.6
6000 9.1 48.4 185 26 13 -0.2 -0.1 | 9.1 48.4 180 29 15 3.6 2.0
5000 7.1 44.8 155 11 6 -2.5 -1.4 | 10.0 50.0 160 14 7 4.0 2.2
12/21/2025 AT 1400 MST | 12/21/2025 AT 1700 MST
|
CAPE... 0.0 LI... +1.4 | CAPE... 0.0 LI... +1.2
CINH... -0.0 K INDEX... +24.4 | CINH... -0.2 K INDEX... +23.7
|
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
--------------------------------------------------------------------------------
26000 -30.6 -23.1 255 66 34 7.9 4.3 | -30.5 -22.9 255 64 33 8.1 4.4
24000 -25.9 -14.6 255 64 33 7.4 4.0 | -25.8 -14.4 255 63 33 7.3 4.0
22000 -21.7 -7.1 255 63 33 7.1 3.9 | -21.7 -7.1 255 62 32 6.8 3.8
20000 -17.7 0.1 260 61 31 6.5 3.6 | -17.9 -0.2 255 61 31 6.3 3.5
18000 -13.7 7.3 260 57 29 5.6 3.0 | -13.8 7.2 255 58 30 5.9 3.2
16000 -10.2 13.6 255 49 25 6.3 3.4 | -10.2 13.6 255 54 28 6.7 3.7
14000 -6.4 20.5 250 42 22 8.0 4.4 | -6.1 21.0 250 47 24 7.3 4.0
12000 -1.5 29.3 250 37 19 8.1 4.4 | -1.6 29.1 240 37 19 8.1 4.5
10000 3.4 38.1 245 31 16 7.9 4.3 | 3.3 37.9 230 31 16 7.6 4.1
9000 5.6 42.1 235 30 15 7.2 4.0 | 5.5 41.9 225 29 15 7.4 4.1
8000 7.4 45.3 220 30 15 4.0 2.2 | 7.5 45.5 210 29 15 6.9 3.8
7000 8.4 47.1 200 28 14 3.8 2.1 | 9.2 48.6 195 29 15 4.4 2.4
6000 9.9 49.8 180 26 13 7.9 4.4 | 10.9 51.6 180 27 14 4.7 2.6
5000 12.6 54.7 165 13 7 8.3 4.6 | 11.8 53.2 160 12 6 14.2 7.8
________________________________________________________________________________
THIS PRODUCT IS ISSUED ONCE PER DAY BY APPROXIMATELY 0600 MST/0700 MDT
(1300 UTC). THIS PRODUCT IS NOT CONTINUOUSLY MONITORED NOR UPDATED AFTER
THE INITIAL ISSUANCE.
THE INFORMATION CONTAINED HEREIN IS BASED ON THE 1200 UTC RAWINSONDE OBSERVATION
AT THE SALT LAKE CITY, UTAH INTERNATIONAL AIRPORT AND/OR NUMERICAL WEATHER
PREDICTION MODEL DATA REPRESENTATIVE OF THE AIRPORT. THESE DATA MAY NOT BE
REPRESENTATIVE OF OTHER AREAS ALONG THE WASATCH FRONT. 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.
042025
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