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Tropical Depression Seven was a tropical depression in the 1999 Atlantic hurricane season that never developed into a tropical storm. It formed in the Bay of Campeche on September 5. The depression moved north-northwest after forming, and hit near the town of La Pesca in Tamaulipas on September 6 before intensifying further.

The depression produced heavy rainfall, though damage totals are unknown. Its remnants produced light rainfall in Texas, peaking at 3.35 inches in Harlingen. There were no deaths associated with the depression.

Satellite image of Tropical Depression Seven
td7ze5.png
Formation September 5, 1999
Dissipation September 7, 1999
Highest winds 35 mph
Lowest pressure 1006 mbar
Deaths None reported
Damages Unknown
Areas affected Mexico, South Texas

Meteorological History

Tropical Depression Seven formed when a strong monsoon-type flow, which extended northward through eastern Mexico interacted with a tropical wave in the Bay of Campeche. Unexpectedly, early in the morning hours of September 5, high resolution visible satellite images showed a well-defined low level circulation center and organized convection in the Bay of Campeche. It is estimated that Tropical Depression Seven formed from this convective area at 1800 UTC on September 5 near Tampico. Because the depression was forecast to become a tropical storm, Tropical Storm Warnings were issued from the coast of Tampico to Matamoros. Just before landfall, the depression was becoming better organized, as indicated by a well-defined center of circulation. The depression moved northwest, and it moved inland near 1200 UTC on September 6 near La Pesca, producing heavy rainfall over northeastern Mexico as well as southern Texas. The depression's circulation center was clearly observed on the WFSO Brownsville radar.

Impact

The depression dumped heavy rainfall on northeastern Mexico and southern Texas, although damage figures are not available, and no deaths were reported. The depression's remnants produced 3.35 inches of rain in Harlingen, Texas.

See Also

1999 Atlantic hurricane season

References

http://www.nhc.noaa.gov/1999seven.html

http://en.wikipedia.org/wiki/1999_Atlantic_hurricane_season

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