2140 Heartland cyclone season

The 2140 Heartland cyclone season officially runs from March 1 to November 1 (February 14 to December 14 in some areas), although these dates just conventionally delimit the period of each year when most tropical cyclones form in The Heartland. This season, Tropical Depression One formed about a month and a half earlier than the official start.

Pre-season predictions

Three sets of pre-season predictions were released; the first, on November 16, 2139, was released by the Lox Land Island Weather Observatory, and called for 17 depressions, 10 tropical storms and 4 hurricanes. The official preseason forecast was released three days before TD One formed; the Liverpool England Met Service's Hurricane Prediction Centre called for 12 tropical storms, of which 5 would be hurricanes and one would break the Category 3 mark. The final pre-season forecast was released on January 4, and was the most optimistic of all, released by experts at the Orean College of Meteorology in Orean. It noted that due to a cooling trend only around 7 depressions would form, of which only 4 would make Tropical Storm strength.

Storms

Tropical Storm Bonita

Advisory archive on TS Bonita

On January 6, 2140, Tropical Depression One formed despite relatively strong wind shear, about 300 miles southeast of Rhyddid. The first advisory noted that "(strengthening) and (slow gaining) of power" was possible, due to weakening wind shear, and 12 hours later at the second advisory, it was upgraded to Tropical Storm Bonita. The storm weakened as it neared the West Kompa Ru coast, having reached its peak of 70 mph, with growing wind shear, which is common for early January. It dissipated the very next day, barely 28 hours after forming.

Hurricane Mordrel

Advisory archive

On January 26, the 5 am tacking advisory from the Satellite Bureau in Kompa Ru noted a 1000 hectopascal non-tropical area of low pressure packing winds of 35 knots – Tropical Storm strength – northwest of Port du Poivre, Ineptia. At the 5 pm tracking advisory, the Bureau issued notification that it had gained enough subtropical characteristics to be designated a subtropical cyclone. A 5.45 pm special advisory was released by the HPC headquarters. At the first full advisory, the Prediction Centre marvelled at its relatively-intense rate of intensification, of 0.71 hPa per hour for an off-season storm. The storm continued to strengthen, and at the 7 am advisory was upgraded to a low-end Category 1 hurricane. It did not last long as a hurricane, and was downgraded back to a tropical storm at the next advisory. At midnight on the morning of January 28 it was reported that the storm had merged with a cold front and become extratropical.

Timeline of events

All times are local standard time.

January

January 6

• 4 am - Tropical Depression One forms 480 km southeast of Rhyddid.
• 4 pm - Tropical Depression One is upgraded to Tropical Storm Bonita.

January 7

• 6 am - Tropical Storm Bonita is affected by growing wind shear and is downgraded to a tropical depression.
• 12 pm - Tropical Depression Bonita dissipates and advisories are discontinued.

January 26

• 5:45 pm - Subtropical Storm Mordrel forms from a previously non-tropical area of low pressure.
• 7 pm - Subtropical Storm Mordrel gains full tropical characteristics and is redesignated Tropical Storm Mordrel.

January 27

• 7 am - Tropical Storm Mordrel is upgraded to Hurricane Mordrel.
• 7 pm - Hurricane Mordrel is downgraded to a tropical storm.

January 28

• 12 am - Tropical Storm Mordrel merges with a cold front and is declared extratropical.

2140 storm names

Storms were for the first time named by nations within the Liverpool England Area of Responsibility; 16 nations submitted names to name cyclones with. Only storms of tropical storm strength get named; if the 16 names run out, the list reverts to the old naming scheme. Active storms are in bold, unused names are greyed out.

Retirement

If any of the 16 pre-submitted names are retired, the nation is asked to submit a new name. If any of the other standard names are retired, a name from the backup list is used to replace the retired name. Names retired will be decided on in December 2140.