The photograph on the preceding page, taken at infra-red wavelengths by the Very High Resolution Radiometer of the NOAA 5 Satellite at 1940 GMT on 16 September 1978, shows an intense swirl of cloud associated with a depression of 954 mb, situated near 64"N, 40"W on the corresponding 1800 GMT chart. The depression developed very rapidly as the circulation of an old hurricane (Flossie) moved north-east into the warm sector of a shallow wave on a vigorous baroclinic zone. The developing low rapidly occluded, with the warm air of the hurricane being lifted into the extensive area of frontal cloud ahead of the system. The behaviour of the low, despite the rapid distortion of the thermal steering pattern by the intense circulation, was anomalous in that its track curved anticyclonically (to the right), symptomatic of the warm-core origin of the system.Very strong winds were a feature of the low with steady winds up to 70 knots affecting ships and exposed islands to the north of Scotland. The maximum reported gusts from anemograph stations were 87 knots at Kirkwall Airport in the Orkney Islands and 84 knots at Lerwick in the Shetlands.The main feature of the pattern over the UK, shown mostly cloud-covered at the bottom of the picture, is the cloud associated with the trailing cold front. To the south of the front a very strong temperature inversion in the warm sector was associated with a layer of stratocumulus which is breaking up into lee-wave billows downstream of the higher ground of Wales.Land features of interest are the darker (warmer) patches associated with the conurbations of London and Paris and the Seine valley. Notice also the dark streak of the Rhine valley at lower right.