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2017-18 Alaskan Arctic Cyclone Season
2017-18 Alaskan Seasonal Summary Map.png
First storm formed September 17 - Aaron
Last storm dissipated Season in progress
Strongest storm Thomas - 300 mph; 789 mbar
Total polar depressions 27 (Record high)
Total polar storms 27 (Record high)
Minimal polar cyclones 19 (Record high)
Moderate polar cyclones 12 (Record high)
Severe polar cyclones 8 (Record high)
Polar vorticies 6 (Record high)
Total fatalities Unknown
Total damage Unknown

Timeline

Seasonal Forecasts

Predictions of polar cyclone activity in the 2017-18 Alaskan Arctic cyclone season
Source Date Named
polar
storms
Minimal
Polar
cyclones
Moderate
polar
cyclones
Severe
polar
cyclones
Polar
vorticies
Average (1979-2016) 16.4 9.7 5.1 2.2 0.9

HTMC September 12, 2017 14-18 8-11 3-6 1-3 0-1
NKWC September 12, 2017 13 5 2 1 0
BNWC September 12, 2017 13-20 8-12 4-8 2-4 1-2
GIHC September 12, 2017 12-19 6-11 5-8 1-3 0-2
AHHC September 21, 2017 17 10 6 4 2
PMC November 21, 2017 19-28 12-17 7-11 3-7 5
Actual activity
27 19 12 8 6

Polar Cyclones

Polar Vortex Aaron

Polar vortex (HTMC)
Aaron (September 2017) Aaron (2017 - Hype)
Duration September 17 – September 27
Peak intensity 170 mph (275 km/h) (1-min)
899 mbar (hPa)


Polar Storm Ballari

Polar storm (HTMC)
Ballari (October 2017) Ballari (2017 - Hype)
Duration October 21 – October 25
Peak intensity 60 mph (95 km/h) (1-min)
997 mbar (hPa)


Minimal Polar Cyclone Caleb

Minimal polar cyclone (HTMC)
Caleb (October 2017) Caleb (2017 - Hype)
Duration October 27 – November 2
Peak intensity 95 mph (155 km/h) (1-min)
973 mbar (hPa)


Polar Vortex Dameka

Polar vortex (HTMC)
Dameka (November 2017) Dameka (2017 - Hype)
Duration November 8 – November 13
Peak intensity 175 mph (280 km/h) (1-min)
894 mbar (hPa)


Minimal Polar Cyclone Eamon

Minimal polar cyclone (HTMC)
Eamon (November 2017) Eamon (2017 - Hype)
Duration November 16 – November 18
Peak intensity 80 mph (130 km/h) (1-min)
983 mbar (hPa)


Polar Vortex Francine

Polar vortex (HTMC)
Francine (November 2017) Francine (2017 - Hype)
Duration November 16 – November 25
Peak intensity 150 mph (240 km/h) (1-min)
922 mbar (hPa)


Moderate Polar Cyclone Gabriel

Moderate polar cyclone (HTMC)
Gabriel (November 2017 - Hype) Gabriel (2017 - Hype)
Duration November 19 – November 23
Peak intensity 115 mph (185 km/h) (1-min)
967 mbar (hPa)


Severe Polar Cyclone Heidi

Severe polar cyclone (HTMC)
Heidi (November 2017 - Hype) Heidi (2017 - Hype)
Duration November 19 – November 23
Peak intensity 145 mph (235 km/h) (1-min)
931 mbar (hPa)


Minimal Polar Cyclone Ichiro

Minimal polar cyclone (HTMC)
Ichiro (November 2017 - Hype) Ichiro (2017 - Hype)
Duration November 19 – November 24
Peak intensity 85 mph (120 km/h) (1-min)
966 mbar (hPa)


Subpolar Storm Jacinta

Subpolar storm (HTMC)
Jacinta (November 2017 - Hype) Jacinta (2017 - Hype)
Duration November 20 – November 22
Peak intensity 60 mph (95 km/h) (1-min)
993 mbar (hPa)


Polar Storm Anna

Polar storm (HTMC)
Anna (November 2017 - Hype) Anna (2017 - Hype)
Duration November 22 (Entered Basin) – November 25
Peak intensity 50 mph (80 km/h) (1-min)
998 mbar (hPa)


Polar Storm Kadar

Polar storm (HTMC)
Kadar (December 2017 - Hype) Kadar (2017 - Hype)
Duration December 1 – December 3
Peak intensity 50 mph (80 km/h) (1-min)
999 mbar (hPa)


Minimal Polar Cyclone Lacey

Minimal polar cyclone (HTMC)
Lacey (December 2017 - Hype) Lacey (2017 - Hype)
Duration December 1 – December 5
Peak intensity 75 mph (120 km/h) (1-min)
988 mbar (hPa)



Polar Vortex Mason

Polar vortex (HTMC)
Mason (December 2017 - Hype) Mason (2017 - Hype)
Duration December 1 – December 8
Peak intensity 150 mph (240 km/h) (1-min)
917 mbar (hPa)


Minimal Polar Cyclone Nadra

Minimal polar cyclone (HTMC)
Nadra (December 2017 - Hype) Nadra (2017 - Hype)
Duration December 6 – December 10
Peak intensity 70 mph (115 km/h) (1-min)
991 mbar (hPa)


Minimal Polar Cyclone Occhave

Minimal polar cyclone (HTMC)
Occhave (December 2017 - Hype) Occhave (2017 - Hype)
Duration December 6 – December 9
Peak intensity 65 mph (105 km/h) (1-min)
993 mbar (hPa)


Moderate Polar Cyclone Pabla

Moderate polar cyclone (HTMC)
Pabla (December 2017 - Hype) Pabla (2017 - Hype)
Duration December 6 – December 10
Peak intensity 110 mph (175 km/h) (1-min)
952 mbar (hPa)


Polar Storm Ralph

Polar storm (HTMC)
Ralph (December 2017 - Hype) Ralph (2017 - Hype)
Duration December 9 – December 11
Peak intensity 45 mph (70 km/h) (1-min)
1003 mbar (hPa)


Polar Storm Saima

Polar storm (HTMC)
Saima (December 2017 - Hype) Saima (2017 - Hype)
Duration December 9 – December 11
Peak intensity 50 mph (80 km/h) (1-min)
1001 mbar (hPa)


Polar Vortex Thomas

Polar vortex (HTMC)
Thomas (December 2017 - Hype) Thomas (2017 - Hype)
Duration December 9 – December 20
(Exited basin)
Peak intensity 300 mph (485 km/h) (1-min)
789 mbar (hPa)


Severe Polar Cyclone Valencia

Severe polar cyclone (HTMC)
Valencia (December 2017 - Hype) Valencia (2017 - Hype)
Duration December 20 – present
Peak intensity 140 mph (225 km/h) (1-min)
934 mbar (hPa)


Moderate Polar Cyclone Waldemar

Moderate polar cyclone (HTMC)
Waldemar (December 2017 - Hype) Waldemar (2017 - Hype)
Duration December 20 – December 28
(Exited basin)
Peak intensity 105 mph (170 km/h) (1-min)
963 mbar (hPa)


Polar Storm April

Polar storm (HTMC)
April (December 2017 - Hype) April (2017 - Hype)
Duration December 20 – December 27
Peak intensity 60 mph (95 km/h) (1-min)
990 mbar (hPa)


Polar Vortex Evie

Polar vortex (HTMC)
Evie (December 2017 - Hype) Evie (2017 - Hype)
Duration December 27 (Entered basin) – January 3
Peak intensity 200 mph (320 km/h) (1-min)
861 mbar (hPa)


Minimal Polar Cyclone Bradley

Minimal Polar Cyclone (HTMC)
Bradley (January 2018 - Hype) Bradley (2018 - Hype)
Duration January 4 – January 8
Peak intensity 70 mph (115 km/h) (1-min)
986 mbar (hPa)


Moderate Polar Cyclone Carmine

Moderate polar cyclone (HTMC)
Carmine (January 2018 - Hype) Carmine (2018 - Hype)
Duration January 4 – January 7
Peak intensity 105 mph (170 km/h) (1-min)
967 mbar (hPa)


Polar Storm Derick

Polar storm (HTMC)
Derick (January 2018 - Hype) Derick (2018 - Hype)
Duration January 4 – January 10
Peak intensity 50 mph (80 km/h) (1-min)
998 mbar (hPa)


Storm Names

  • Aaron
  • Ballari
  • Caleb
  • Dameka
  • Eamon
  • Francine
  • Gabriel
  • Heidi
  • Ichiro
  • Jacinta
  • Kadar
  • Lacey
  • Mason
  • Nadra
  • Occhave
  • Pabla
  • Ralph
  • Saima
  • Thomas
  • Valencia
  • Waldemar

After exhausting the primary list, the auxillary list began to be used this season. In rare cases where this list would get exhausted the Greek Alphabet will follow.

  • April
  • Bradley
  • Carmine
  • Derick
  • Echo (unused)
  • Fabricio (unused)
  • Graycen (unused)
  • Herman (unused)
  • Isadora (unused)
  • Jacob (unused)
  • Krista (unused)
  • Lloyd (unused)
  • Marissa (unused)
  • Nathaniel (unused)
  • Oaklyn (unused)
  • Payton (unused)
  • Rahima (unused)
  • Steven (unused)
  • Teagan (unused)
  • Vander (unused)
  • Wynette (unused)

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