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Tropical Storm Edouard was the fifth named storm of the 1990 Atlantic hurricane season. Edouard had a non-tropical origin, and was a high latitude storm that formed on August 2 southwest of the Azores. Edouard was never a very tropical system, but because deep convection developed and organized around the center for a time, it was designated a tropical cyclone. Edouard moved slowly and erratically across the northeastern Atlantic Ocean until it became extratropical on August 11.

Edouard caused no known damage, and no known fatalities.

Edouard on August 3
edouardow8.jpg
FormationAugust 2, 1990
Dissipation August 11, 1990
Highest winds 45 mph
Lowest pressure 1003 mbar
Deaths None
Damages Unknown
Areas affectedAzores
Part of the 1990 Atlantic hurricane season

Meteorological history

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Edouard had its origins within a wave on a cold front that was over the northeastern Atlantic Ocean on August 2. Over the next 24 hours, the wave developed into a strong mid-latitude cyclone with an upper-level low atop the circulation. By 1200 UTC August 3, rapid baroclinic development over water temperatures of 22°C had led to the formation of a 1009 mb area of low pressure. On August 3, the non-tropical low drifted northward and began to weaken slightly on August 4 as it turned southwest and moved across the Azores. From August 6 through the morning of August 8, the low executed a counter-clockwise loop while located around 200 to 300 miles southwest of the Azores. During this period, deep convection developed and organized around the low-level center, and it is estimated that the system developed into Tropical Depression Six at 1800 UTC August 6. The upper low drifted southwestward in tandem with the surface circulation associated with the newly formed tropical cyclone. By the morning of August 8, the upper low had begun to weaken and move off to the northeast, degenerating into an open trough by the morning of August 9. Consequently, the depression strengthened into Tropical Storm Edouard at 1800 UTC August 8. By this time, Edouard was moving to the northeast. Strong upper-level southwesterly shear removed most of Edouard's associated deep convection by August 10. By 1200 UTC August 10, Edouard weakened to a tropical depression and became extratropical on the morning of August 11. The extratropical remnants continued moving east and dissipated near the coast of Portugal on August 13.

Lack of Retirement

Because it caused no known damage, Edouard was not retired in the Spring of 1992 by the World Meteorological Organization. It is on the list of names to be used for the 2014 Atlantic hurricane season.

See also

References

http://www.nhc.noaa.gov/archive/storm_wallets/atlantic/atl1990-prelim/edouard/

http://en.wikipedia.org/wiki/1990_Atlantic_hurricane_season#Tropical_Storm_Edouard

External links

1990 Atlantic hurricane season

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