Tehuano wind event

April 8th, 2014 |
GOES-13 0.63 µm visible channel images (click to play animation)

GOES-13 0.63 µm visible channel images (click to play animation)

As we have seen a number of times during the Winter 2013/2014 season, another strong Tehuano wind event occurred on 08 April 2014. McIDAS images of GOES-13 0.63 µm visible channel data (above; click image to play animation) showed distinct arc clouds marking the leading edge of 2 pulses of gap winds emerging southward over the Gulf of Tehuantepec. The second (later) pulse of gap winds appeared to be stronger, and transported plumes of blowing dust to the south.

A timely overpass of a Metop polar-orbiting satellite provided ASCAT surface scaterometer winds which showed the fanning out of the Tehuano flow at 16:20 UTC (below). An advisory for the development of Storm Force winds had been issued by the NOAA Ocean Prediction Center for the Gulf of Tehuantepec.

GOES-13 10.7 µm IR image with Metop ASCAT surface scatterometer winds

GOES-13 10.7 µm IR image with Metop ASCAT surface scatterometer winds

MADIS 1-hour interval satellite winds (below; click image to play animation) tracked the velocity of the arc cloud and dust plumes during the day, which were moving at speeds up to 30 knots.

GOES-13 10.7 µm IR images with MADIS 1-hour satellite winds (click to play animation)

GOES-13 10.7 µm IR images with MADIS 1-hour satellite winds (click to play animation)

Past cases of well-defined Tehuano wind events can be found here.