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2018-19 Alaskan Arctic Cyclone Season
2018-19 AAS Summary Map.png
First storm formed November 19 - Abrianna (second-latest start on record)
Last storm dissipated Season ongoing
Strongest storm TBD
Total polar depressions 12
Total polar storms 11
Polar cyclones 7
Major polar cyclones 4
Total fatalities TBD
Total damage TBD

The 2018-19 Alaskan arctic cyclone season will begin on October 1, 2018 and end on April 1, 2019. However, polar cyclone formation is possible at any time in the year. Due to an expected El Niño which flatlines the jet stream over the basin, which typically limits polar cyclone formation, this season is expected to be below-average in terms of activity.

Timeline

Seasonal Forecasts

Predictions of polar activity in the 2018-19 Alaskan Arctic Cyclone Season
Source Date Named
storms
Polar cyclones Major
polar cyclones
Average (1979-2016) 16.4 9.3 5.1
Record high activity 34 25 16
Record low activity 9 4 1
HTMC June 28, 2018 13-18 7-11 3-6
BNMA June 28, 2018 14-19 6-11 3-6
LHC June 28, 2018 13-20 7-11 3-7
PWC June 28, 2018 15-19 8-10 2-5
BNWC June 28, 2018 14-19 8-12 4-7
GKWC July 4, 2018 12-16 5-9 2-5
DHC August 7, 2018 17-20 8-12 2-5
CSHC August 7, 2018 15 6 2
SHC August 7, 2018 14 6 3
RMA August 7, 2018 15-19 6-10 2-4
BNWC September 11, 2018 16-21 9-13 4-7
CDMC September 11, 2018 17-20 9-12 4-8
WHC October 9, 2018 16 5 3
––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Actual activity
11 7 4

Storms

Polar Cyclone Abrianna

Category 7 polar cyclone (HTMC)
Abrianna (2018 - Hype - Sim) Abrianna (2018 - Hype - Track)
DurationNovember 21 – December 1
Peak intensity230 mph (370 km/h)
864 mbar (hPa)


Polar Cyclone Bob

Category 3 polar cyclone (HTMC)
Bob (2018 - Hype - Sim) Bob (2018 - Hype - Track)
DurationNovember 21 – December 1
Peak intensity125 mph (200 km/h)
947 mbar (hPa)


Polar Storm Calista

Polar storm (HTMC)
Calista (2018 - Hype - Sim) Calista (2018 - Hype - Track)
DurationNovember 26 – December 1
Peak intensity50 mph (80 km/h)
1001 mbar (hPa)


Polar Cyclone Daisuke

Category 2 polar cyclone (HTMC)
Daisuke (2018 - Hype - Sim) Daisuke (2018 - Hype - Track)
DurationDecember 8 – December 16
Peak intensity105 mph (170 km/h)
973 mbar (hPa)


Subpolar Storm Earlene

Subpolar storm (HTMC)
Earlene (2018 - Hype - Sim) Earlene (2018 - Hype - Track)
DurationDecember 11 – December 16
Peak intensity45 mph (70 km/h)
1003 mbar (hPa)


Polar Cyclone Faxon

Category 4 polar cyclone (HTMC)
Faxon (2018 - Hype - Sim) Faxon (2018 - Hype - Track)
DurationDecember 27 – January 2
Peak intensity140 mph (225 km/h)
936 mbar (hPa)



Subpolar Cyclone Gabriella

Category 1 subpolar cyclone (HTMC)
Gabriella (2019 - Hype - Sim) Gabriella (2019 - Hype - Track)
DurationJanuary 2 – January 9
Peak intensity85 mph (135 km/h)
971 mbar (hPa)


Polar Storm Hadrian

Subpolar storm (HTMC)
Hadrian (2019 - Hype - Sim) Hadrian (2019 - Hype - Track)
DurationJanuary 6 – January 10
Peak intensity40 mph (65 km/h)
1005 mbar (hPa)


Polar Storm Idra

Polar storm (HTMC)
Idra (2019 - Hype - Sim) Idra (2019 - Hype - Track)
DurationJanuary 8 – January 15
Peak intensity50 mph (80 km/h)
1000 mbar (hPa)


Polar Depression 10A

Polar depression (HTMC)
10A (2019 - Hype - Sim) 10A (2019 - Hype - Track)
DurationJanuary 14 – January 16
Peak intensity30 mph (50 km/h)
1007 mbar (hPa)


Polar Cyclone Jabbar

Category 6 polar cyclone (HTMC)
Jabbar (2019 - Hype - Sim) 
DurationJanuary 15 – February 4
Peak intensity200 mph (320 km/h)
869 mbar (hPa)


Polar Cyclone Katelynn

Category 1 polar cyclone (HTMC)
Katelynn (2019 - Hype - Sim) Katelynn (2019 - Hype - Track)
DurationFebruary 21 – February 25
Peak intensity80 mph (130 km/h)
988 mbar (hPa)


Storm Names

  • Abrianna
  • Bob
  • Calista
  • Daisuke
  • Earlene
  • Faxon
  • Gabriella
  • Hadrian
  • Idra
  • Jabbar
  • Katelynn
  • Ladarius (unused)
  • Marcella (unused)
  • Nadim (unused)
  • Octavia (unused)
  • Paco (unused)
  • Rachael (unused)
  • Sadler (unused)
  • Tacita (unused)
  • Valentino (unused)
  • Wakana (unused)