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Tue 08/09/2026 1100 AES |
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Wind on the Ground (NW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1121 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.84m/s 361 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to 0.8 C in the air. |
XC Potential (4hrs) 102km downwind XC or 48 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 1315 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.11m/s 414 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to -1.2 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 1214 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.78m/s 349 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -1.1 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 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) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 18kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.2m/s 39 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to 3.4 C in the air. |
XC Potential (4hrs) 8.5km downwind XC or 4 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) 32kph 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 1616 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.52m/s 494 ft/min |
Temperature 7 C It will be cold on the ground. It will be down to -9.2 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 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 (NNE) 43kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: extreme |
Thermal Height 1701 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.6m/s 510 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -9 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) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: high |
Thermal Height 1560 m Great height for flying XC. |
Thermal Quality 30% Updraft Velocity 2.08m/s 408 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -7.6 C in the air. |
XC Potential (4hrs) 34.2km downwind XC or 7.2 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 (S) 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 0.63m/s 123 ft/min |
Temperature 6 C It will be cold on the ground. It will be down to -0.6 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 (S) 25kph 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: high |
Thermal Height 1084 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.93m/s 378 ft/min |
Temperature 9 C It will be cold on the ground. It will be down to -1.8 C in the air. |
XC Potential (4hrs) 44.4km downwind XC or 12 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 (S) 25kph 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 1161 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.97m/s 386 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to 0.4 C in the air. |
XC Potential (4hrs) 44.4km downwind XC or 12 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 1175 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.68m/s 329 ft/min |
Temperature 13 C It will be cold on the ground. It will be down to 1.3 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) 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 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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Fri 11/09/2026 1100 AES |
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Wind on the Ground (WNW) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1090 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.72m/s 337 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 4.1 C in the air. |
XC Potential (4hrs) 99km downwind XC or 54 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 (WNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1314 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.98m/s 388 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 1.9 C in the air. |
XC Potential (4hrs) 102km downwind XC or 48 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 (WNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1083 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.54m/s 302 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 4.2 C in the air. |
XC Potential (4hrs) 102km downwind XC or 48 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 (WNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph 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 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) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1163 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.9m/s 372 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 2.4 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 (WNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1348 m Great height for flying XC. |
Thermal Quality 90% Updraft Velocity 2.08m/s 408 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 1.5 C in the air. |
XC Potential (4hrs) 91.8km downwind XC or 43.2 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) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1247 m Great height for flying XC. |
Thermal Quality 80% Updraft Velocity 1.7m/s 333 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 2.5 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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Sat 12/09/2026 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 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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Sun 13/09/2026 1100 AES |
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Wind on the Ground (NNW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 22kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: moderate |
Thermal Height 1338 m Great height for flying XC. |
Thermal Quality 70% Updraft Velocity 2.06m/s 404 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 1.6 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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Sun 13/09/2026 1300 AES |
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Wind on the Ground (NW) 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 1518 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.16m/s 423 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 0.8 C in the air. |
XC Potential (4hrs) 63km downwind XC or 25.2 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 (WNW) 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 1392 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.69m/s 331 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 3.1 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 1700 AES |
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Wind on the Ground (WNW) 14kph 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 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 (N) 25kph 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 888 m XC Possible but difficult conditions. |
Thermal Quality 40% Updraft Velocity 1.53m/s 300 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 7.1 C in the air. |
XC Potential (4hrs) 37km downwind XC or 10 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 (NNW) 25kph 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: extreme |
Thermal Height 1232 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.89m/s 370 ft/min |
Temperature 18 C It will be cool on the ground. It will be down to 5.7 C in the air. |
XC Potential (4hrs) 44.4km downwind XC or 12 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 (N) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.06m/s 208 ft/min |
Temperature 18 C It will be cool on the ground. It will be down to 11.4 C in the air. |
XC Potential (4hrs) 19km downwind XC or 4 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 (N) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (NNE) 61kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: extreme |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 10.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Tue 15/09/2026 1100 AES |
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Wind on the Ground (SSW) 25kph 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 1493 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.4m/s 470 ft/min |
Temperature 9 C It will be cold on the ground. It will be down to -5.9 C in the air. |
XC Potential (4hrs) 55.5km downwind XC or 15 km Triangle Possible by Sport Class Pilot. |
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Tue 15/09/2026 1300 AES |
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Wind on the Ground (SW) 25kph 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 1535 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.41m/s 472 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to -5.4 C in the air. |
XC Potential (4hrs) 55.5km downwind XC or 15 km Triangle Possible by Sport Class Pilot. |
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Tue 15/09/2026 1500 AES |
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Wind on the Ground (SW) 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 1486 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.02m/s 396 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -3.9 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Tue 15/09/2026 1700 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 657 m XC Possible but difficult conditions. |
Thermal Quality 0% Updraft Velocity 0m/s 0 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to 3.4 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....