World record pressure of 1091.9 hpa in Mongolia?
The air pressure measured at Tosontsengel in Mongolia is causing a bit of a stir on Twitter at the moment. At 00 UTC it …
World record pressure of 1091.9 hpa in Mongolia? Read More »
MSLP
Satellite with MSLP overlay
I spent some time this morning producing a viewer to display MSLP isobars on top of a combined visible and satellite image. It shows …
Summer 2020 – weekly mean pressure charts
I thought for a change that I’d just just put a slightly different take on the weekly mean pressure charts for the twelve weeks …
Was storm Ellen really a tropical storm in disguise?
I received an email this morning regarding the intensity of storm Ellen yesterday evening from Stephen Burt (which I thought was was very kind …
Was storm Ellen really a tropical storm in disguise? Read More »
The ups and downs of MSLP since December 2019
This is a chart of surface pressure and anomalies since last December which I’ve gleaned from reanalysis data (for 55N 5W) includes peaks for …
April 2020 MSLP
Mean MSLP in the northeast quarter-sphere was dominated by a belt of above average pressure (+4 hPa to +7 hPa) that stretched all the …
New March record of 1051.3 hPa at Malin Head
I guessed correctly because as far as I can see Malin Head pipped Tiree to the highest March MSLP in March. At 11 UTC …
March highest pressure record broken
This one caught me out. I had committed the cardinal sin of believing that NWP is always right, something that you can usually take …
A good chance of a record March Air Pressure being set on Sunday
We could see a new extreme high MSLP record for the British Isles on Sunday if as expected the 1050 hPa isobar gets close …
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How unusual are deep lows in August?
The word ‘unusual’ seems to be cropping up in every weather forecast on the TV when describing low ‘Yap’ at the moment, but how unusual are deep lows in August?