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Wed 13/05/2026 1100 AES |
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Wind on the Ground (NNE) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 4kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1107 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.65m/s 323 ft/min |
Temperature 14 C It will be cold on the ground. It will be down to 2.9 C in the air. |
XC Potential (4hrs) 96km downwind XC or 60 km Triangle Possible by Sport Class Pilot. |
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Wed 13/05/2026 1300 AES |
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Wind on the Ground (WNW) 4kph Light Winds, no turbulence expected. |
Winds Aloft (N) 4kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1443 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.93m/s 378 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 1.6 C in the air. |
XC Potential (4hrs) 93km downwind XC or 66 km Triangle Possible by Sport Class Pilot. |
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Wed 13/05/2026 1500 AES |
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Wind on the Ground (N) 4kph Light Winds, no turbulence expected. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1303 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.43m/s 280 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 3 C in the air. |
XC Potential (4hrs) 93km downwind XC or 66 km Triangle Possible by Sport Class Pilot. |
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Wed 13/05/2026 1700 AES |
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Wind on the Ground (NNE) 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 11 C It will be cold on the ground. It will be down to 4.4 C in the air. |
XC Potential (4hrs) 0km downwind XC or 0 km Triangle Possible by Sport Class Pilot. |
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Thu 14/05/2026 1100 AES |
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Wind on the Ground (N) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1319 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.79m/s 351 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 1.8 C in the air. |
XC Potential (4hrs) 96km downwind XC or 60 km Triangle Possible by Sport Class Pilot. |
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Thu 14/05/2026 1300 AES |
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Wind on the Ground (N) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1697 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 2.07m/s 406 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to -1 C in the air. |
XC Potential (4hrs) 96km downwind XC or 60 km Triangle Possible by Sport Class Pilot. |
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Thu 14/05/2026 1500 AES |
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Wind on the Ground (N) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 7kph Light Winds, no turbulence expected. Vertical Wind Shear: moderate |
Thermal Height 1420 m Great height for flying XC. |
Thermal Quality 100% Updraft Velocity 1.47m/s 288 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 1.8 C in the air. |
XC Potential (4hrs) 96km downwind XC or 60 km Triangle Possible by Sport Class Pilot. |
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Thu 14/05/2026 1700 AES |
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Wind on the Ground (N) 7kph Light Winds, no turbulence expected. |
Winds Aloft (N) 4kph Light Winds, no turbulence expected. Vertical Wind Shear: light |
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 15/05/2026 1100 AES |
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Wind on the Ground (NNE) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1049 m Great height for flying XC. |
Thermal Quality 70% Updraft Velocity 1.57m/s 308 ft/min |
Temperature 16 C It will be cool on the ground. It will be down to 5.5 C in the air. |
XC Potential (4hrs) 69.3km downwind XC or 37.8 km Triangle Possible by Sport Class Pilot. |
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Fri 15/05/2026 1300 AES |
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Wind on the Ground (N) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: light |
Thermal Height 1115 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.37m/s 269 ft/min |
Temperature 16 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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Fri 15/05/2026 1500 AES |
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Wind on the Ground (N) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1204 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.37m/s 269 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 5 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 15/05/2026 1700 AES |
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Wind on the Ground (N) 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 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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Sat 16/05/2026 1100 AES |
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Wind on the Ground (NNE) 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 871 m XC Possible but difficult conditions. |
Thermal Quality 40% Updraft Velocity 1.34m/s 263 ft/min |
Temperature 15 C It will be cool on the ground. It will be down to 6.3 C in the air. |
XC Potential (4hrs) 35km downwind XC or 14 km Triangle Possible by Sport Class Pilot. |
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Sat 16/05/2026 1300 AES |
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Wind on the Ground (N) 18kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 18kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 1157 m Great height for flying XC. |
Thermal Quality 60% Updraft Velocity 1.69m/s 331 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 5.4 C in the air. |
XC Potential (4hrs) 63km downwind XC or 25.2 km Triangle Possible by Sport Class Pilot. |
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Sat 16/05/2026 1500 AES |
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Wind on the Ground (NNE) 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 50% Updraft Velocity 1.1m/s 216 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) 42.5km downwind XC or 20 km Triangle Possible by Sport Class Pilot. |
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Sat 16/05/2026 1700 AES |
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Wind on the Ground (NNE) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. 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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Sun 17/05/2026 1100 AES |
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Wind on the Ground (NNE) 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 888 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 1.4m/s 274 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) 27km downwind XC or 9 km Triangle Possible by Sport Class Pilot. |
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Sun 17/05/2026 1300 AES |
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Wind on the Ground (N) 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 1178 m Great height for flying XC. |
Thermal Quality 50% Updraft Velocity 1.7m/s 333 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 5.2 C in the air. |
XC Potential (4hrs) 52.5km downwind XC or 21 km Triangle Possible by Sport Class Pilot. |
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Sun 17/05/2026 1500 AES |
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Wind on the Ground (N) 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 867 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 1.15m/s 225 ft/min |
Temperature 17 C It will be cool on the ground. It will be down to 8.3 C in the air. |
XC Potential (4hrs) 26.25km downwind XC or 10.5 km Triangle Possible by Sport Class Pilot. |
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Sun 17/05/2026 1700 AES |
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Wind on the Ground (NNE) 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 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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Mon 18/05/2026 1100 AES |
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Wind on the Ground (NNE) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph Strong winds, expect rough air, Downwind tasks possible only. Vertical Wind Shear: high |
Thermal Height 1017 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.47m/s 288 ft/min |
Temperature 19 C It will be cool on the ground. It will be down to 8.8 C in the air. |
XC Potential (4hrs) 40.8km downwind XC or 19.2 km Triangle Possible by Sport Class Pilot. |
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Mon 18/05/2026 1300 AES |
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Wind on the Ground (NNE) 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 1417 m Great height for flying XC. |
Thermal Quality 40% Updraft Velocity 1.77m/s 347 ft/min |
Temperature 20 C It will be pleasant on the ground. |
XC Potential (4hrs) 43.2km downwind XC or 14.4 km Triangle Possible by Sport Class Pilot. |
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Mon 18/05/2026 1500 AES |
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Wind on the Ground (NNE) 18kph Moderate winds, light turbulence possible. |
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 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 18/05/2026 1700 AES |
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Wind on the Ground (E) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
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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Tue 19/05/2026 1100 AES |
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Wind on the Ground (NE) 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 657 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 1.14m/s 223 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) 26.25km downwind XC or 10.5 km Triangle Possible by Sport Class Pilot. |
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Tue 19/05/2026 1300 AES |
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Wind on the Ground (NE) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 30% Updraft Velocity 0.67m/s 131 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) 24.75km downwind XC or 13.5 km Triangle Possible by Sport Class Pilot. |
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Tue 19/05/2026 1500 AES |
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Wind on the Ground (ENE) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph 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 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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Tue 19/05/2026 1700 AES |
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Wind on the Ground (E) 14kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 25kph 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 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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Wed 20/05/2026 1100 AES |
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Wind on the Ground (NNE) 14kph 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 30% Updraft Velocity 0.75m/s 147 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) 25.5km downwind XC or 12 km Triangle Possible by Sport Class Pilot. |
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Wed 20/05/2026 1300 AES |
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Wind on the Ground (N) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 11kph Moderate winds, light turbulence possible. Vertical Wind Shear: moderate |
Thermal Height 657 m XC Possible but difficult conditions. |
Thermal Quality 60% Updraft Velocity 1m/s 196 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) 49.5km downwind XC or 27 km Triangle Possible by Sport Class Pilot. |
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Wed 20/05/2026 1500 AES |
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Wind on the Ground (N) 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 10% Updraft Velocity 0.2m/s 39 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) 8km downwind XC or 5 km Triangle Possible by Sport Class Pilot. |
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Wed 20/05/2026 1700 AES |
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Wind on the Ground (NE) 11kph Moderate winds, light turbulence possible. |
Winds Aloft (N) 14kph Moderate winds, light turbulence possible. 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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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....