Overview

Tropical Storm Laura was the twelfth named storm of the 2008 Atlantic hurricane season. It developed in late September 2008 from a broad non-tropical low and existed only briefly as a tropical cyclone before completing an extratropical transition. The system remained over the open North Atlantic and did not produce a prolonged period of tropical characteristics.

Meteorological history

The low-pressure area that became Laura was identified well west of the Azores. On September 29 the system lay about 1,015 miles (1,635 km) to the west of the western islands of the Azores and gradually acquired organized convection as it moved over relatively warmer waters. By the afternoon of September 30 the disturbance had obtained sufficient tropical features to be classified as a tropical storm and was assigned the name Laura.

Laura’s tropical phase was short-lived. Within a day of being named, the cyclone began a transition back to an extratropical structure — a process during which the storm loses its warm-core, symmetric organization and becomes associated with frontal features and colder air masses. The transition was effectively complete by the morning of October 1, at which point operational agencies described the system as post-tropical and ceased issuing tropical cyclone advisories.

Characteristics and classification

  • Origin: formed from a large non-tropical low that developed over the central North Atlantic. See the original disturbance described as a large non-tropical low.
  • Location at formation: approximately 1,015 miles west of the Azores (distance reference), well away from major landmasses.
  • Designation: twelfth named storm of the 2008 Atlantic hurricane season.
  • Transition: converted to a post-tropical/extratropical cyclone within about 24–36 hours after acquiring tropical characteristics, with the National Hurricane Center issuing the final advisory.

Impact and significance

Because Laura formed and dissipated over the open ocean, it did not produce notable landfall impacts. Systems like Laura illustrate how mid-latitude interactions can lead to brief tropical development when a non-tropical low traverses waters sufficiently warm to sustain organized convection. Such short-lived tropical cyclones are not uncommon in the busy months of late summer and early autumn.

Notable facts and distinctions

It is important to distinguish this Tropical Storm Laura (2008) from other storms with the same name in different years. The 2008 Laura is remembered mainly as a brief tropical episode that developed from an extratropical-type low and then quickly reverted to a post-tropical state. For official summaries and advisories see sources maintained by the operational agencies and archived advisories provided by the National Hurricane Center. Additional geographical context is available regarding the Azores region referenced above: Azores.

For synoptic analyses and seasonal summaries, consult the broader coverage of the 2008 Atlantic hurricane season and technical reports on tropical transition processes and extratropical conversion. Further reading on the behavior of non-tropical lows that acquire tropical characteristics can be found through specialized meteorological sources and research collections covering observed distances and tracks.