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Subject: Request for "polar low" as event term
A Polar Low that affected Northern Norway on the 16th December 2022. This low gave 1 to 1,5 meters of snow locally on the AndÃya and Senja islands.
Polar lows occur in most of the European maritime arctic, and are most common at the coast of Scandinavia north of 65 degrees north, but are known to affect all areas around the North Sea. While they are a maritime or coastal phenomenon, polar lows will still produce a significant amount of snowfall also further inland where the lows make landfall. Â
Wintery weather with snow showers and gale force winds is relatively commonplace in Northern Norway during the winter, and will normally not affect the public significantly. Polar lows however, are at the most intense end of the winter weather spectrum and will typically give stronger wind and more intense snowfall, and thus have a larger impact on coastal communities. For this reason MET Norway is issuing dedicated weather alerts for Polar Lows, adhering to the definition of the European Polar Low Working Group (EPLWG), but with the constraint that the 10m wind is expected to be above 21 m/s or severe gale force. Â
Relevant CAP categories are âMeteorologicalâ and âTransportâ. The most relevant grouping is "winter weather".
The broad term âpolar lowâ collectively subsume a number of smaller events, as mentioned earlier. The term is used to service multiple user communities.
TromsÃ, August 8th 2023
Gunnar Noer
References:
Polar Lows Explained: Barentswatch.no,https://www.barentswatch.no/en/articles/polar-lows-explained/
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