ESA - Observing the Earth - Hurricane Dean tracked from space

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Hurricane Dean tracked from space

21 August 2007

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This Envisat MERIS image of Hurricane Dean was acquired on 20 August 2007 (16:00 UTC) and shows the storm a few hours before hitting the Yucatan coast in Mexico. At the time of image acquisition, Dean was a Category-4 hurricane on the Saffir-Simpson Hurricane Scale, with wind approaching 250 km/h, i.e. close to becoming a Category-5 hurricane. The MERIS image is in Reduced Resolution mode with a spatial resolution of 1200 metres.

Credits: ESA

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This Envisat MERIS image of Hurricane Dean was acquired on 19 August 2007 (14:52 UTC) and shows the storm passing off the South coast of Haiti. At the time of image acquisition, Dean was a Category-4 hurricane on the Saffir-Simpson Hurricane Scale, with winds at 230 km per hr. The MERIS image is in Reduced Resolution mode with a spatial resolution of 1200 metres.

Credits: ESA

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This picture shows the scatterometer winds (in arrows or flags), with an infrared satellite image (from METEOSAT, GOES or GMS) and numerical weather prediction model winds (currently only HIRLAM forecast in the Northern Atlantic region, in blue arrows or flags) as well as an indicative ice mask (in blue) on the background.

A wind flag is represented by barbs and solid pennants, a full barb representing a wind speed of 5 m/s, a half barb representing a wind speed of 2.5 m/s, and a pennant representing a wind speed of 25 m/s.

The exact data acquisition time is plotted in red next to the satellite swath.

If a magenta marker is plotted on top of the wind arrow, this denotes land or ice presence. If a scatterometer wind arrow is plotted in yellow, this denotes that the Variational Quality Control flag is set. A yellow dot means that the KNMI Quality Control Flag is set.

Credits: ESA - EUMETSAT - KNMI

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This Envisat MERIS image of Hurricane Dean was acquired on 17 August 2007 (14:15 UTC) and shows the storm leaving the Martinique and St Lucia islands where severe damages were reported. At the time of image acquisition, Dean was a Category-3 hurricane on the Saffir-Simpson Hurricane Scale, with winds close to 180 km per hr. The MERIS image is in Reduced Resolution mode with a spatial resolution of 1200 metres.

Credits: ESA

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This map shows the path of Hurricane Dean between 17 and 20 August 2007. The location of the 3 Envisat MERIS images is indicated together with the exact location and category level of Hurricane Dean at time of MERIS image acquisition.

Credits: ESA

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The exact data acquisition time is plotted in red next to the satellite swath.