Tropical Storm Nicholas (2003)

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For other storms with the same name, see List of storms named Nicholas.
Tropical Storm Nicholas
Tropical Storm Nicholas at peak intensity on October 17
Meteorological history
FormedOctober 13, 2003
Remnant lowOctober 23
DissipatedNovember 5, 2003
Tropical storm
1-minute sustained (SSHWS/NWS)
Highest winds70 mph (110 km/h)
Lowest pressure990 mbar (hPa); 29.23 inHg
Overall effects
FatalitiesNone reported
DamageNone
Areas affectedFlorida, Gulf Coast
IBTrACSEdit this at Wikidata
Part of the 2003 Atlantic hurricane season

Tropical Storm Nicholas was a long-lived

extratropical cyclone on October 24. As an extratropical storm, Nicholas executed a large loop to the west, and after moving erratically for a week and organizing into a tropical low, it was absorbed by a non-tropical low. The low continued westward, crossed Florida, and ultimately dissipated over the Gulf Coast of the United States
on November 5.

Nicholas had no impact as a tropical cyclone, and impact from the low that absorbed the storm was limited to rainfall, gusty winds, and rough surf. Nicholas extended the above-average levels of tropical cyclone activity throughout the 2003 season, and was one of fourteen seasons to reach fourteen storms. The low that absorbed the storm nearly developed into a tropical cyclone itself, but moderate wind shear prevented that from happening.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

The origin of Tropical Storm Nicholas can be traced to a

area of low pressure along the wave on October 10.[1] Convection organized around the low early on October 12 while located 800 miles (1,300 km) southwest of the Cape Verde islands.[2] As upper-level winds became more favorable,[3] the system became better organized, though the circulation center initially remained located to the west of the area of heavy showers.[4] The surface circulation of the large circulation envelope moved towards a position near the western edge of the deepest convection, and it is estimated the system developed into Tropical Depression Nineteen late on October 13 while located 1,030 miles (1,660 km) west-southwest of the Cape Verde islands.[5]

Located within an area of moderate southwesterly

banding features and improvement in its convective pattern[8] due to lesser amounts of vertical shear and a healthier anticyclone over the storm.[9] Nicholas continued to strengthen, and attained a peak intensity of 70 mph (110 km/h) on October 17 while located 875 miles (1,408 km) east of the Leeward Islands. Dvorak estimates suggested Nicholas potentially attained hurricane status, though microwave images of the storm showed a sheared system without any evidence of an eye feature.[1]

Radar image of the remnants of Nicholas hitting Florida on November 3

Shortly after peaking in strength, Nicholas weakened due to increasing southwesterly wind shear, and the center of circulation briefly became exposed from the deep convection.

extratropical cyclone. The remnant storm executed a large anticyclonic loop, resulting in a westward motion and a brief re-intensification into an extratropical storm on October 29. The storm continued to the west along a warm front associated with a non-tropical low to its southwest, and executed a second anticyclonic loop to the south.[1] On October 30, convection increased over the low-level circulation of what was left to Nicholas, and the National Hurricane Center indicated a potential for tropical or subtropical development as it moved towards warmer waters.[12] The system executed a small cyclonic loop, and on October 31 the system organized into a tropical low. It turned westward towards a non-tropical low, and on November 1 the remnants of Nicholas was absorbed by the low.[1]

On November 1, convection increased in the complex system that absorbed the remnants of Nicholas, and the National Hurricane Center indicated the system could develop into a tropical or subtropical cyclone at any time.[13] The low continued quickly westward, generating only sporadic convection, and crossed Florida on November 3. After entering the Gulf of Mexico, it turned to the west-northwest,[1] and without organizing it made landfall in southeast Louisiana on November 4.[14] It continued inland, and quickly weakened over Louisiana and Mississippi on November 5.[15]

Impact, records, and naming

The non-tropical low that absorbed Nicholas dropped locally heavy rainfall across the

Bahamas and southern Florida,[13] as well as in portions of the northern Gulf Coast.[14] Gusty winds from the low produced heavy surf and rip currents along the east and west coast of Florida,[16] and a wind gust of 35 mph (56 km/h) was recorded in Cape Canaveral as a rainband from the system moved ashore.[17] The low also resulted in two to four foot (0.6 to 1.2 m) swells along the East Coast of the United States.[18] Overall, no damage or deaths were associated with Nicholas or the low that absorbed it.[1]

Operationally, the National Hurricane Center determined if the non-tropical low that absorbed Nicholas developed into a tropical or subtropical storm, it would be named Odette. In post-season analysis, the center considered classifying the system as an unnumbered tropical depression, though lack of sufficient characteristics of a tropical depression prevented the classification.[19] If Nicholas had attained hurricane status, it would have been one of eight tropical cyclones to reach hurricane status in October in the deep tropical Atlantic since 1900.[20]

See also

References

  1. ^ a b c d e f g h i Jack Beven (2003). "Tropical Storm Nicholas Tropical Cyclone Report" (PDF). National Hurricane Center. Retrieved May 22, 2015.
  2. ^ Stewart (2003). "October 12 Tropical Weather Outlook". NHC. Retrieved 2006-10-13.[permanent dead link]
  3. ^ Cobb/Jarvinen (2003). "October 12 Tropical Weather Outlook (2)". NHC. Retrieved 2006-10-13.[permanent dead link]
  4. ^ Pasch (2003). "October 13 Tropical Weather Outlook". NHC. Retrieved 2006-10-13.[permanent dead link]
  5. ^ Pasch (2003). "Tropical Depression Nineteen Discussion One". NHC. Retrieved 2006-10-13.
  6. ^ Franklin (2003). "Tropical Depression Nineteen Discussion Two". NHC. Retrieved 2006-10-13.
  7. ^ Stewart (2003). "Tropical Storm Nicholas Discussion Seven". NHC. Retrieved 2006-10-13.
  8. ^ Stewart (2003). "Tropical Storm Nicholas Discussion Eleven". NHC. Retrieved 2006-10-13.
  9. ^ Beven (2003). "Tropical Storm Nicholas Discussion Thirteen". NHC. Retrieved 2006-10-13.
  10. ^ Beven (2003). "Tropical Storm Nicholas Discussion Seventeen". NHC. Retrieved 2006-10-14.
  11. ^ Pasch (2003). "Tropical Storm Nicholas Discussion Thirty". NHC. Retrieved 2006-10-14.
  12. ^ Stewart (2003). "October 30 Tropical Weather Outlook". NHC. Retrieved 2006-10-14.[permanent dead link]
  13. ^ a b Avila (2003). "November 1 Tropical Weather Outlook". NHC. Retrieved 2006-10-14.[permanent dead link]
  14. ^ a b Avila (2003). "November 4 Tropical Weather Outlook". NHC. Retrieved 2006-10-14.[permanent dead link]
  15. ^ Avila (2003). "November 5 Tropical Weather Outlook". NHC. Retrieved 2006-10-14.[permanent dead link]
  16. ^ Florida Department of Emergency Management (2006). "News Archive". Retrieved 2006-10-14.
  17. ^ Mosely & Spratt (2004). "Utilizing a Local Data Assimilation and Prognostic System to Aid With the Timing, Placement, and Impact of Short-Range Tropical Weather Hazards" (PDF). NOAA. Archived from the original (PDF) on October 13, 2006. Retrieved 2006-10-14.
  18. ^ Sean Collins (2003). "Wavetraks November Newsletter". Surfline Forecast Team. Retrieved 2006-10-14.
  19. ^ Gary Padgett (2003). "November 2003 Tropical Cyclone Summary". Archived from the original on August 22, 2006. Retrieved 2006-10-14.
  20. ^ Pasch (2003). "Tropical Depression Nineteen Discussion Five". NHC. Retrieved 2006-10-14.

External links

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