2019–20 Alaskan Arctic cyclone season

2019–20 Alaskan Arctic cyclone season

First storm formed	July 2 - Acton (Record Eariest)
Last storm dissipated	Season ongoing
Strongest storm	TBD
Total polar depressions	1
Total polar storms	1
Polar cyclones	0
Major polar cyclones	0
Total fatalities	Unknown
Total damage	Unknown

The 2019-20 is an annual event of polar cyclone formation. While formation is more typical from September to March, the formation of 01A in July proves that polar cyclone formation is possible at any time of the year.

Seasonal Forecasts

Predictions of polar cyclone activity in the 2019-20 Alaskan Arctic cyclone season

Source	Date	Named polar storms	Polar cyclones	Major polar cyclones
Average (2013-14 to 2018-19)		15.2	9.8	5.7
HTMC	July 1, 2019	18-25	10-17	4-11
BNWC	July 3, 2019	20-26	12-18	6-11
HLMA	July 3, 2019	19-23	10-13	4-6
PWC	July 5, 2019	21-24	9-17	5-10
	Actual activity	1	0	0

Storms

Subpolar Storm Acton

Subpolar storm (HTMC)
Duration	July 2 – July 5
Peak intensity	45 mph (70 km/h) 1-min 985 mbar (hPa)

In late June, a non-tropical low pressure area located near Wainwright, Alaska showed some potential for subpolar cyclone formation. The area of low pressure would eventually become more symmetrical and have a wintry mix of precipitation happening inside it. Enough wintry precipitation was recorded in the system for the HTMC to classify the system at a very high latitude of 71.2°N and a longitude of 159.0°W on July 2. The depression would slowly strengthen over the next to achieve winds of 30 kt (35 mph) and a central pressure of 993 mbar. Later in the day on July 3, the system strengthened enough to become a subpolar storm and get the name Acton. The storm would peak as a 45 mph subpolar storm with a central pressure of 985 mbar on 00:00 UTC, July 4. Shortly after peak intensity the system started to encounter increasing wind shear and then gradually began to weaken. By 06:00 UTC, July 5, the system was downgraded to a subpolar depression after its very ragged appearance on satellite imagery no longer supported polar storm intensity. Shortly before landfall in Banks Island at 00:00 UTC, July 6, the system degenerated into a polar low as it remained without sufficiently organized rain and snow bands for twelve hours. Shortly after the remnants left Banks Island they dissipated completely due to the extremely high shear ridden environment.

Names

Acton Bella (unused) Casmir (unused) Debroah (unused) Eiji (unused) Floella (unused) Garfield (unused)

Helmi (unused) Irvin (unused) Jamila (unused) Kevin (unused) Lachina (unused) Mannix (unused) Naoki (unused)

Obasi (unused) Philiana (unused) Robert (unused) Sammy (unused) Timmothy (unused) Vara (unused) Warren (unused)