Tue 16/09/2025 1100 AES |
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Wind on the Ground (NW) 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: high |
Thermal Height 915 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 1.46m/s 286 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to 2.9 C in the air. |
XC Potential (4hrs) 27.75km downwind XC or 7.5 km Triangle Possible by Sport Class Pilot. |
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Tue 16/09/2025 1300 AES |
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Wind on the Ground (WNW) 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 882 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.32m/s 259 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to 2.2 C in the air. |
XC Potential (4hrs) 19km downwind XC or 4 km Triangle Possible by Sport Class Pilot. |
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Tue 16/09/2025 1500 AES |
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Wind on the Ground (WNW) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.57m/s 112 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) 9.5km downwind XC or 2 km Triangle Possible by Sport Class Pilot. |
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Tue 16/09/2025 1700 AES |
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Wind on the Ground (NW) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.33m/s 65 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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Wed 17/09/2025 1100 AES |
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Wind on the Ground (WNW) 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 983 m XC Possible but difficult conditions. |
Thermal Quality 50% Updraft Velocity 2.09m/s 410 ft/min |
Temperature 6 C It will be cold on the ground. It will be down to -3.8 C in the air. |
XC Potential (4hrs) 46.25km downwind XC or 12.5 km Triangle Possible by Sport Class Pilot. |
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Wed 17/09/2025 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 1099 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.3m/s 451 ft/min |
Temperature 7 C It will be cold on the ground. It will be down to -4 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Wed 17/09/2025 1500 AES |
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Wind on the Ground (WNW) 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: moderate |
Thermal Height 1516 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 2.15m/s 421 ft/min |
Temperature 9 C It will be cold on the ground. It will be down to -6.2 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 17/09/2025 1700 AES |
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Wind on the Ground (W) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.72m/s 141 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) 9.25km downwind XC or 2.5 km Triangle Possible by Sport Class Pilot. |
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Thu 18/09/2025 1100 AES |
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Wind on the Ground (NW) 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 1487 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.32m/s 455 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) 63km downwind XC or 25.2 km Triangle Possible by Sport Class Pilot. |
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Thu 18/09/2025 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: moderate |
Thermal Height 1644 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.43m/s 476 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to -4.4 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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Thu 18/09/2025 1500 AES |
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Wind on the Ground (WNW) 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 1511 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.98m/s 388 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) 44.4km downwind XC or 12 km Triangle Possible by Sport Class Pilot. |
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Thu 18/09/2025 1700 AES |
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Wind on the Ground (NW) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 29kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
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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Fri 19/09/2025 1100 AES |
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Wind on the Ground (NNE) 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 838 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.4m/s 274 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 5.6 C in the air. |
XC Potential (4hrs) 19.5km downwind XC or 3 km Triangle Possible by Sport Class Pilot. |
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Fri 19/09/2025 1300 AES |
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Wind on the Ground (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (NNE) 54kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: extreme |
Thermal Height 913 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.55m/s 304 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 5.9 C in the air. |
XC Potential (4hrs) 20.5km downwind XC or 1 km Triangle Possible by Sport Class Pilot. |
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Fri 19/09/2025 1500 AES |
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Wind on the Ground (N) 40kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (NNE) 54kph Dangerous winds! It will be very rough with strong rotor and turbulence. Vertical Wind Shear: extreme |
Thermal Height 826 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.28m/s 251 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 8.7 C in the air. |
XC Potential (4hrs) 20.5km downwind XC or 1 km Triangle Possible by Sport Class Pilot. |
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Fri 19/09/2025 1700 AES |
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Wind on the Ground (NNW) 47kph Dangerous winds! It will be very rough with strong rotor and turbulence. |
Winds Aloft (NNE) 97kph 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 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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Sat 20/09/2025 1100 AES |
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Wind on the Ground (W) 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: high |
Thermal Height 995 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 1.95m/s 382 ft/min |
Temperature 5 C It will be cold on the ground. It will be down to -5 C in the air. |
XC Potential (4hrs) 29.25km downwind XC or 4.5 km Triangle Possible by Sport Class Pilot. |
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Sat 20/09/2025 1300 AES |
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Wind on the Ground (WNW) 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: moderate |
Thermal Height 1192 m Great height for flying XC. |
Thermal Quality 30% Updraft Velocity 1.86m/s 365 ft/min |
Temperature 7 C It will be cold on the ground. It will be down to -4.9 C in the air. |
XC Potential (4hrs) 35.1km downwind XC or 5.4 km Triangle Possible by Sport Class Pilot. |
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Sat 20/09/2025 1500 AES |
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Wind on the Ground (WNW) 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 1295 m Great height for flying XC. |
Thermal Quality 30% Updraft Velocity 1.78m/s 349 ft/min |
Temperature 8 C It will be cold on the ground. It will be down to -5 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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Sat 20/09/2025 1700 AES |
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Wind on the Ground (WNW) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.42m/s 82 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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Sun 21/09/2025 1100 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: moderate |
Thermal Height 1145 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 2.21m/s 433 ft/min |
Temperature 9 C It will be cold on the ground. It will be down to -2.5 C in the air. |
XC Potential (4hrs) 54km downwind XC or 18 km Triangle Possible by Sport Class Pilot. |
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Sun 21/09/2025 1300 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 1259 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 2.16m/s 423 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to -2.6 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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Sun 21/09/2025 1500 AES |
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Wind on the Ground (NW) 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: moderate |
Thermal Height 1374 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.98m/s 388 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -2.7 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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Sun 21/09/2025 1700 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.43m/s 84 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) 8.75km downwind XC or 3.5 km Triangle Possible by Sport Class Pilot. |
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Mon 22/09/2025 1100 AES |
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Wind on the Ground (WNW) 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 965 m XC Possible but difficult conditions. |
Thermal Quality 20% Updraft Velocity 1.29m/s 253 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to 0.4 C in the air. |
XC Potential (4hrs) 19km downwind XC or 4 km Triangle Possible by Sport Class Pilot. |
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Mon 22/09/2025 1300 AES |
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Wind on the Ground (WNW) 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: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.77m/s 151 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) 9.5km downwind XC or 2 km Triangle Possible by Sport Class Pilot. |
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Mon 22/09/2025 1500 AES |
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Wind on the Ground (W) 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: high |
Thermal Height 1107 m Great height for flying XC. |
Thermal Quality 30% Updraft Velocity 1.65m/s 323 ft/min |
Temperature 11 C It will be cold on the ground. It will be down to -0.1 C in the air. |
XC Potential (4hrs) 35.1km downwind XC or 5.4 km Triangle Possible by Sport Class Pilot. |
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Mon 22/09/2025 1700 AES |
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Wind on the Ground (WSW) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.41m/s 80 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) 9km downwind XC or 3 km Triangle Possible by Sport Class Pilot. |
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Tue 23/09/2025 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: moderate |
Thermal Height 1319 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 2.22m/s 435 ft/min |
Temperature 10 C It will be cold on the ground. It will be down to -3.2 C in the air. |
XC Potential (4hrs) 102km downwind XC or 48 km Triangle Possible by Sport Class Pilot. |
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Tue 23/09/2025 1300 AES |
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Wind on the Ground (W) 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 1450 m Great height for flying XC. |
Thermal Quality 70% Updraft Velocity 2.31m/s 453 ft/min |
Temperature 12 C It will be cold on the ground. It will be down to -2.5 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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Tue 23/09/2025 1500 AES |
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Wind on the Ground (WSW) 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 1402 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.95m/s 382 ft/min |
Temperature 13 C It will be cold on the ground. It will be down to -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 23/09/2025 1700 AES |
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Wind on the Ground (WSW) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 10% Updraft Velocity 0.54m/s 106 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) 9km downwind XC or 3 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.
Wind speeds are average wind speeds, gusts will be higher.
Conditions are graded for how the average pilot will feel about them.
Great flying conditions for XC
Turbulent XC flying conditions
Dangerous flying conditions
Likely Poor XC flying conditions
Problems? Suggestions? Send me an email....