Tropical Storm Lorenzo (2001)

Infobox Hurricane | name=Tropical Storm Lorenzo
Type=Tropical storm
Basin=Atl
Year=2001
Image location=TS Lorenzo 30 oct 2001 1710Z.jpg


Formed=October 27, 2001
Dissipated=October 31, 2001
1-min winds=35
Pressure=1007
Da

Fatalities=No fatalities reported
Areas=No land areas affected
Hurricane season=2001 Atlantic hurricane season

Tropical Storm Lorenzo was, in terms if wind, the weakest named tropical cyclone of the 2001 Atlantic hurricane season and last of four named storms to form in October. The 12th tropical cyclone of the season, Lorenzo originated in an upper-level trough that persisted over the eastern North Atlantic Ocean on October 26, the second storm of the season to form from a baroclinic system.cite web | author = National Hurricane Center| publisher = National Hurricane Center | title = 2001 Monthly Weather Review | date = 2002 | accessdate=2008-01-07 | url = http://www.aoml.noaa.gov/general/lib/lib1/nhclib/mwreviews/2001.pdf ] Throughout its existence, Lorenzo stayed out to sea, never threatening any land areas. Upon forming, it was predicted to be a moderate tropical storm with winds of 60 mph (95 km/h), though it only reached a peak of 40 mph (60 km/h) on October 30. The storm's remnants were absorbed by a frontal system on October 31.

torm History

In October 2001, an upper-level tropospheric trough persisted in the eastern Atlantic Ocean.cite web | author = Miles B. Lawrence| publisher = National Hurricane Center | title = Tropical Cyclone Report - Tropical Storm Lorenzo | date = December 6, 2001 | accessdate=2008-01-07 | url = http://www.nhc.noaa.gov/2001lorenzo.html] By October 26, a low-level circulation formed beneath the trough, and quickly gained organization. On October 27, the low formed into Tropical Depression Fourteen about 860 miles (1380 kilometers) south-southwest of the western Azores.cite web | author = Jack Beven| publisher = National Hurricane Center | title = Tropical Depression 14 - Discussion Number 3 | date = October 27, 2001 | accessdate=2008-01-07 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.001.html] The depression drifted westward for the next three days, entering an area of high wind shear which initially inhibited development.cite web | author = Miles B. Lawrence| publisher = National Hurricane Center | title = Tropical Depression 14 - Discussion Number 3 | date = October 27, 2001 | accessdate=2008-01-07 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.001.html] The depression was forecast to attain winds of at least 60 mph (95 km/h), though it failed to attain that intensity.cite web | author = Jack Beven | publisher = National Hurricane Center | title = Tropical Storm Lorenzo - Discussion Number 11 | date = October 30, 2001 | accessdate=2008-01-07 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.011.html] cite web | author = Stacy Stewart | publisher = National Hurricane Center | title = Tropical Depression 14 - Discussion Number 5 | date = October 28, 2001 | accessdate=2008-01-08 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.005.html] The depression was the second storm of the season to form from a baroclinic system.cite web | author = National Hurricane Center| publisher = National Hurricane Center | title = 2001 Monthly Weather Review | date = 2002 | accessdate=2008-01-07 | url = http://www.aoml.noaa.gov/general/lib/lib1/nhclib/mwreviews/2001.pdf ] Banding features developed over the storm, and on October 30 it was upgraded to Tropical Storm Lorenzo. Wind shear also relented, allowing for further organization and development. At 0000 UTC on October 30, Lorenzo strengthened to reach peak winds of 40 mph (60 km/h) with a minimum barometric pressure of 1007 millibars. A mid-level trough broke up the ridge to the north of the storm, and the storm continued to the north.cite web | author = Richard J. Pasch | publisher = National Hurricane Center | title = Tropical Storm Lorenzo - Discussion Number 12 | date = October 30, 2001 | accessdate=2008-01-08 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.012.html] Convection began to remove itself from the circulation, failing to strengthen.cite web | author = Jack Beven | publisher = National Hurricane Center | title = Tropical Storm Lorenzo - Discussion Number 13 | date = October 30, 2001 | accessdate=2008-01-08 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.013.html] At around the same time, the cyclone was losing tropical characteristics, with winds just above tropical storm status.cite web | author = Jack Beven | publisher = National Hurricane Center | title = Tropical Storm Lorenzo - Discussion Number 14 | date = October 30, 2001 | accessdate=2008-01-07 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.014.html] Before the final advisory was issued by the National Hurricane Center, Lorenzo was predicted to accelerate and briefly attain winds of 45 mph (65 km/h). This failed to occur, and the final advisory was issued on the storm the next morning as it became extratropical. On October 31. Lorenzo's remnants merged with a frontal system about 690 miles (1110 kilometres) west of the Azores.cite web | author = Richard J. Pasch| publisher = National Hurricane Center | title = Tropical Storm Lorenzo - Discussion Number 16 | date = October 31, 2001 | accessdate=2008-01-08 | url = http://www.nhc.noaa.gov/archive/2001/dis/al142001.discus.016.html]

Preparations, impact and naming

One ship reported winds of 42–49 mph (49–78 km/h) on October 28 and October 29, as it neared then Tropical Depression Fourteen. However the ship had a wind bias of 26 mph (41 km/h). Because the storm remained from land, no effects, damages, or fatalities were reported. As a result, the name was not retired by the World Meteorological Organization in the spring of 2002. This was the first storm named "Lorenzo" in the Atlantic basin, replacing 1995's devastating Hurricane Luis.cite web | author = FEMA | publisher = Federal Emergency Management Agency | title = Are You Ready? | date = 2007 | accessdate=2008-01-07 | url = http://www.fema.gov/areyouready/hurricanes.shtm ] The name was reused in the 2007 Atlantic hurricane season.

ee also

*List of Atlantic hurricane seasons
*List of storms in the 2001 Atlantic hurricane season

References

External links

* [http://www.nhc.noaa.gov/2001.html National Hurricane Center 2001 Atlantic hurricane season summary]