Home / news / Extremely low pressure not seen in several decades brings down air traffic over northern Norway: Air pressure across major parts of the region was below 940 hectopascal, a level that makes flying unsafe.

Extremely low pressure not seen in several decades brings down air traffic over northern Norway: Air pressure across major parts of the region was below 940 hectopascal, a level that makes flying unsafe.

Extremely low pressure not seen in several decades brings down air traffic over northern Norway: Air pressure across major parts of the region was below 940 hectopascal, a level that makes flying unsafe.

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19 comments

  1. > Airline company Widerøe has in its almost 90 year history never experienced this kind of weather.

    > The Widerøe company that serves most of the regional routes put almost its whole aircraft fleet on the ground.

    > «Our smallest aircraft type Dash 100, 200 and 300 can not fly with pressure lower than 948 hectopascal,» the company informs on its Facebook page.

    Also interesting:

    > The low pressure also resulted in high waters levels along the Norwegian coast. In Tromsø, the north Norwegian town, the sea water was on Tuesday 354 cm higher than normal, the [Meteorological Institute informs](https://twitter.com/Meteorologene/status/1227244622734352384?s=20).

  2. According to the airline its the Altimeters being calibrated for a certain pressure.
    Historically the pilots had charts to calculate their altitude based on atmospheric pressure outside the limits of the altimeter but these Were removed from the flight manuals (for some unspecified reason) in the 90s. Since they cannot perform operations outside the flight manuals, the planes were grounded. The article left that information out for some reason.

  3. [This low pressure system is *really large* as seen on windy.com](https://www.windy.com/-Show—add-more-layers/overlays?pressure,67.102,42.891,3). This site has been fascinating on so many levels, [here is the temperature layer, notice the warmer temperature levels reaching far up the north](https://www.windy.com/-Show—add-more-layers/overlays?temp,67.102,42.891,3). The jet stream and polar vortex have been significantly affected by climate change; more erratic and warped. Expect more records to be broken, more points tipped I’m afraid.

  4. Bit disappointing there’s not one comment explaining why this might be happening.

  5. Sounds like The Day After Tomorrow

  6. I hear it’s been unseasonably warm over there, like mild/cool when it’s usually snowing. Don’t know jack about air pressure, so wonder if it’s related.

  7. Odin expressing his displeasure over SAS Airlines new ad.

    https://m.youtube.com/watch?v=KDHQ1afuFk0

  8. No aircraft could fly over my couch on sunday afternoon either, a couple of beers, a few friends- extremely low pressure environment

  9. I’m calling it. Aliens

  10. > Our smallest aircraft type Dash 100, 200 and 300 can not fly with pressure lower than 948 hectopascal

    What’s going on here? The average pressure at Denver is 850 hPa. What altitude are the Norwegian airfields? And aircraft routinely cruise at 30 000 feet where the pressure is around 300 hPa. Can’t the Norwegians just fly a little lower if they have to?

  11. Air pressure too low to fly? Although I wouldnt consider myself an aviation nut I have been interested in aviation for decades and I build and fly my own RC aircraft too – never in all this time have I ever heard of this.

  12. that’s 940 millibar in more usual units

  13. I was curious, so from friendly wolfram alpha – the pressure difference from normal is equivalent to:

    0.75 times the lung power a typical human can exert

    The atmospheric pressure at 11 miles

    37 times the sound pressure of a rifle at 1 meter

  14. Yup, we’re definitely having really weird weather lately. I can’t remember a January when it was mild enough wash my car outside my house before.

  15. Is this from the massive release of methane from the permafrost and methane clathrates?

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