Archive for August, 2013


SW, Cloud base 4500m. Early CB

August 12th, 2013 - Posted by Steve Ham

Skew T diagrams For an explanation of how to read this please do some homework and read Skew T Basics on  You need to Join which is free, then look in the turorials under convective weather or Mountain Meterology Briefing at 10.30am(need to discuss trackers use, airspace to the E, SW convergence and some general […]

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Light winds near N. Great out and return day for most and 79km for Pete

August 10th, 2013 - Posted by Steve Ham

Situation. High pressure dominates the peninsula with higher temperatures than yesterday.  The winds are light and on PN and above the convection layer are more westerly, but at our flying levels move around from NNW to NNE but are very light.  There is an inversion at 2700m early afternoon which should break leaving us another […]

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Cherry Tree Valley

August 9th, 2013 - Posted by Steve Ham

Situation High pressure at surface and above the convection layer.  Spreading of the isobars and hopefully less wind than yesterday, though picking up to around 20km/hr later afternoon. A slow start and slightly higher trigger temperature than yesterday so likely to be a later start.  A similar route to yesterday, hand hopefully we can get […]

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NE wind and trips to Barco

August 8th, 2013 - Posted by Steve Ham

Situation The upper level  trough  has moved through leaving high pressure at lower levels and a N to NE flow in the convective layer.  around 15km/hr at take off level and 30km/hr at 3000m.   A marked inversion at 2600m.  Probable climbs later in the afternoon to c3000m. A reasonable XC day flying towards Barco/Plasencia […]

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3rd PB for Johan and another for Bill

August 7th, 2013 - Posted by Steve Ham

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WSW and a bit strong

August 6th, 2013 - Posted by Steve Ham

Situation Post cold frontal with relative low pressure in the Peninsula a ground level.Relatively high windspeed and thermal tops probably not more than 27oo in our valley, though potential to over 3000m (inversion around 3.1).  Scattered Cirrus throughout the day.  Cross on take off at 9am and not over strong.  I hope it will come […]

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Candelario and a PB for Johan (48.8km)

August 5th, 2013 - Posted by Steve Ham

Weather Heat low formed over the Peninsula with a cold front out to the west.  Winds a little stronger from the SW than yesterday, but reasonable and around 20km/hr but perhaps 40km/hr if we climb well above the inversion at 3200m and reach 4000m (potential if ground temp at 35ºC). Trigger temp at 28ºC which […]

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PB for Johan, first time over the Pass and 47km

August 3rd, 2013 - Posted by Steve Ham

  A cooler day with the wind finally coming around to the PN take off.  This morning at 9am light W, though we can expect possibly even NE by the afternoon.   Inversions at 2600 m and c3100m.  Not really getting going untill around 2pm.  At 10.30am the wind is still cross over the back […]

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Cold Front. Strong SW going more west at end of day

August 2nd, 2013 - Posted by Steve Ham

A weak cold front going through which is considerably weakened by the high pressure at surface level.  25-30km/hr at 1500m, 65-85km/hr at 3000m. Tomorrow, and feasibly late this evening the winds should lighten and move more to the N. No attempt at flying this morning, but we will keep watch to see if we can […]

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Stronger winds. SW, blue thermals, but maybe some cloud at 5100m at 36ºC

August 1st, 2013 - Posted by Steve Ham

Another difficult day, more so than yesterday which had forecast winds at 20km/hr at flying levels and our main worry was the launch wind speed.  Today the wind near 3000m is near 45 knots.  It is very unlikely to be safe to fly. There is a  heat wave coming up from Africa which often gives […]

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August 2013