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 the sheltering effect of the mountains in the west Scotland and north …
MSLP
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 over summer 2020 by adding a few choice words and some Dad’s …
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 of him). In the 23 UTC observation at Shannon airport the MSLP …
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 the anticyclone of 1050 hPa that affected southern parts in mid January, …
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 way from central Greenland in the NW, down across Iceland and Scotland …
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 this morning the pressure there was 1051.3 hPa or 31.04″ of mercury. …
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 for granted, but not always. The 1049.3 hPa at Stornoway at 21 …
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 to stations in the northwest. The two favourite locations for this to …
A good chance of a record March Air Pressure being set on Sunday Read More »
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?