North East West Passage: Forecast 28 August-day 46
Posted in North East West passage | By Marc |
This map shows the synoptic situation for today 28 of August at 12000utc. The powerful anticyclonic ridge extends over the East Russia into the East Siberian Sea and moves slowly to the East. This situation creates a weak pressure gradient zone over the Southern parts of the East Siberian Sea. As a consequence the wind conditions along the track of the Northern Passage will be very weak. Click on the image to see the full display.
Weather Forecast North East West passage -28 Aug- day 46
General situation
Tricky situation: the Russian anticyclone (high pressure system) expands over the Eastern parts of the East Siberian Sea and as a result the wind becomes very weak along the expected track of the Northern Passage. Especially today the wind has an off day.
Tomorrow a depression tracks Eastwards along the Northern side of the former high pressure (along the 80-81 parallel) which leads to a temporarily wind increase. But on Monday the high pressure takes over again and the wind becomes weak again.
On longer term, by Tuesday the high pressure starts moving further away to the East and the pressure gradient over the Chukchi Sea increases gradually, which implies an increasing wind. Unfortunately this is mainly from the ESE to SSE’ly sector.
(All forecasted winds are average values).
Day 1: 28 Aug
Weather: mainly sunny, risk for fog patches.
Wind: 320-340°2-6kt between 12-18utc becoming calm, after 18utc becoming 140-160°4-8kt.
Day 2: 29 Aug
Weather: sunny spells, scattered to broken cloudiness
Wind: 170-190°8-13kt after 9/12utc becoming 200-220°10-15kt after 21/24utc 230-250°5-10kt
Day 3: 30 Aug
Weather: sunny spells, broken clouds.
Wind: weak to calm after 12/15utc 200-220°4-8kt, after 21utc becoming weak to calm again.
31 August, ESE 4-8kt, becoming SSE 6-12kt
01 September: SE 10-15kt
02 September: ESE to E, later SE to SSE 10-15kt