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Mon 07/09/2026 1100 AES |
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Wind on the Ground (S) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 18kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1406 m Great height for flying XC. |
Thermal Quality 70% Updraft Velocity 2.16m/s 423 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -3.1 C in the air. |
XC Potential (4hrs) 71.4km downwind XC or 33.6 km Triangle Possible by Sport Class Pilot. |
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Mon 07/09/2026 1300 AES |
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Wind on the Ground (SW) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 1900 m Great height for flying XC. |
Thermal Quality 70% Updraft Velocity 2.46m/s 482 ft/min |
Temperature 13 C It will be cold on the ground. It will be down to -6 C in the air. |
XC Potential (4hrs) 73.5km downwind XC or 29.4 km Triangle Possible by Sport Class Pilot. |
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Mon 07/09/2026 1500 AES |
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Wind on the Ground (S) 32kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (N) 36kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: light |
Thermal Height 1247 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.86m/s 365 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -1.5 C in the air. |
XC Potential (4hrs) 46.8km downwind XC or 7.2 km Triangle Possible by Sport Class Pilot. |
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Mon 07/09/2026 1700 AES |
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Wind on the Ground (S) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 32kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.45m/s 88 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to 1.4 C in the air. |
XC Potential (4hrs) 9km downwind XC or 3 km Triangle Possible by Sport Class Pilot. |
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Tue 08/09/2026 1100 AES |
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Wind on the Ground (WNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1118 m Great height for flying XC. |
Thermal Quality 80% Updraft Velocity 1.87m/s 367 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -0.2 C in the air. |
XC Potential (4hrs) 81.6km downwind XC or 38.4 km Triangle Possible by Sport Class Pilot. |
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Tue 08/09/2026 1300 AES |
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Wind on the Ground (WNW) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: light |
Thermal Height 1339 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.14m/s 419 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to -1.4 C in the air. |
XC Potential (4hrs) 64.8km downwind XC or 21.6 km Triangle Possible by Sport Class Pilot. |
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Tue 08/09/2026 1500 AES |
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Wind on the Ground (WNW) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: light |
Thermal Height 1359 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.89m/s 370 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to -1.6 C in the air. |
XC Potential (4hrs) 64.8km downwind XC or 21.6 km Triangle Possible by Sport Class Pilot. |
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Tue 08/09/2026 1700 AES |
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Wind on the Ground (WNW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 0.26m/s 51 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to 4.4 C in the air. |
XC Potential (4hrs) 16.5km downwind XC or 9 km Triangle Possible by Sport Class Pilot. |
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Wed 09/09/2026 1100 AES |
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Wind on the Ground (S) 36kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (NNE) 47kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 1526 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.44m/s 478 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -7.3 C in the air. |
XC Potential (4hrs) 48km downwind XC or 4.8 km Triangle Possible by Sport Class Pilot. |
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Wed 09/09/2026 1300 AES |
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Wind on the Ground (S) 32kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 1736 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.61m/s 512 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -9.4 C in the air. |
XC Potential (4hrs) 46.8km downwind XC or 7.2 km Triangle Possible by Sport Class Pilot. |
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Wed 09/09/2026 1500 AES |
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Wind on the Ground (S) 29kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 36kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 1599 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.19m/s 429 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -8 C in the air. |
XC Potential (4hrs) 45.6km downwind XC or 9.6 km Triangle Possible by Sport Class Pilot. |
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Wed 09/09/2026 1700 AES |
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Wind on the Ground (SSW) 25kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.61m/s 120 ft/min |
Temperature 7 C It will be cold on the ground. It will be down to 0.4 C in the air. |
XC Potential (4hrs) 9.25km downwind XC or 2.5 km Triangle Possible by Sport Class Pilot. |
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Thu 10/09/2026 1100 AES |
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Wind on the Ground (SSW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1198 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2m/s 392 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -1 C in the air. |
XC Potential (4hrs) 61.2km downwind XC or 28.8 km Triangle Possible by Sport Class Pilot. |
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Thu 10/09/2026 1300 AES |
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Wind on the Ground (SSW) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1421 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.15m/s 421 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to -0.2 C in the air. |
XC Potential (4hrs) 63km downwind XC or 25.2 km Triangle Possible by Sport Class Pilot. |
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Thu 10/09/2026 1500 AES |
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Wind on the Ground (S) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 25kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 1326 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.76m/s 345 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 0.7 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Thu 10/09/2026 1700 AES |
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Wind on the Ground (S) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 13 C It will be cold on the ground. It will be down to 6.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Fri 11/09/2026 1100 AES |
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Wind on the Ground (W) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1060 m Great height for flying XC. |
Thermal Quality 80% Updraft Velocity 1.69m/s 331 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 3.4 C in the air. |
XC Potential (4hrs) 79.2km downwind XC or 43.2 km Triangle Possible by Sport Class Pilot. |
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Fri 11/09/2026 1300 AES |
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Wind on the Ground (SW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1443 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.97m/s 386 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 2.6 C in the air. |
XC Potential (4hrs) 59.4km downwind XC or 32.4 km Triangle Possible by Sport Class Pilot. |
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Fri 11/09/2026 1500 AES |
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Wind on the Ground (S) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 1212 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.48m/s 290 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 4.9 C in the air. |
XC Potential (4hrs) 52.5km downwind XC or 21 km Triangle Possible by Sport Class Pilot. |
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Fri 11/09/2026 1700 AES |
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Wind on the Ground (S) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 7.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Sat 12/09/2026 1100 AES |
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Wind on the Ground (NW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: light |
Thermal Height 1014 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.64m/s 321 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 4.9 C in the air. |
XC Potential (4hrs) 99km downwind XC or 54 km Triangle Possible by Sport Class Pilot. |
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Sat 12/09/2026 1300 AES |
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Wind on the Ground (NW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1171 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.84m/s 361 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 4.3 C in the air. |
XC Potential (4hrs) 99km downwind XC or 54 km Triangle Possible by Sport Class Pilot. |
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Sat 12/09/2026 1500 AES |
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Wind on the Ground (WNW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1093 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.51m/s 296 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 5.1 C in the air. |
XC Potential (4hrs) 99km downwind XC or 54 km Triangle Possible by Sport Class Pilot. |
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Sat 12/09/2026 1700 AES |
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Wind on the Ground (NW) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 8.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Sun 13/09/2026 1100 AES |
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Wind on the Ground (N) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 18kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1008 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.66m/s 325 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 4.9 C in the air. |
XC Potential (4hrs) 61.2km downwind XC or 28.8 km Triangle Possible by Sport Class Pilot. |
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Sun 13/09/2026 1300 AES |
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Wind on the Ground (NW) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 29kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1644 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.21m/s 433 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 0.6 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Sun 13/09/2026 1500 AES |
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Wind on the Ground (NW) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 29kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 1470 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.71m/s 335 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 2.3 C in the air. |
XC Potential (4hrs) 43.2km downwind XC or 14.4 km Triangle Possible by Sport Class Pilot. |
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Sun 13/09/2026 1700 AES |
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Wind on the Ground (NNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 29kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: extreme |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 9.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Mon 14/09/2026 1100 AES |
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Wind on the Ground (NW) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 18kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 40% Updraft Velocity 1.05m/s 206 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to 5.4 C in the air. |
XC Potential (4hrs) 35km downwind XC or 14 km Triangle Possible by Sport Class Pilot. |
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Mon 14/09/2026 1300 AES |
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Wind on the Ground (WNW) 22kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 29kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1091 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.92m/s 376 ft/min |
Temperature 13 C It will be cold on the ground. It will be down to 2.1 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Mon 14/09/2026 1500 AES |
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Wind on the Ground (W) 29kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 1092 m Great height for flying XC. |
Thermal Quality 20% Updraft Velocity 1.26m/s 247 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 3.1 C in the air. |
XC Potential (4hrs) 22.8km downwind XC or 4.8 km Triangle Possible by Sport Class Pilot. |
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Mon 14/09/2026 1700 AES |
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Wind on the Ground (WSW) 25kph Strong winds, expect rough air, Downwind tasks possible only. |
Winds Aloft (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to 5.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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This is aimed primarily at the club level pilot who wants to know what to expect for the next week.
Data is calculated from the GFS model data using the RASP calculations daily.
Wind strengths are graded for aircraft suitability. 
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Wind speeds are average wind speeds, gusts will be higher.
Conditions are graded for how the average pilot will feel about them. ![]()
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Great flying conditions for XC
Turbulent XC flying conditions
Dangerous flying conditions
Likely Poor XC flying conditions
Problems? Suggestions? Send me an email....