Covid Christmas

Happy Christmas everyone! :)

Oh wow. No wonder my head feels like it is exploding. Yesterday morning I moved my weather station to better receive, a little higher up, and I noticed that the atmospheric pressure was 1030.

It’s currently 980.1.

That’s a big drop. Not the worst I’ve had (the hurricane a few years ago did it in a day and hit 973) but still time to rattle the paracetamol jar.

What I don’t get is the storm is supposed to have blown though. So why is it still slowly dropping?

It’s a big system. Looks like you might get another day of it.

https://www.metoffice.gov.uk/weather/maps-and-charts/surface-pressure

My uncalibrated BME280 sensor read a high of 1026mb midday on the 25th, and a low of 962mb now (midnight 27/28th), for comparison the Met Office sea level reading for this location is 972mb.

Made it to 974.8, and is now slowly climbing.

Looks like you might get another day of it.

Yup. We did. Less rain than over the weekend, but plenty of wind again.

for comparison the Met Office sea level reading for this location is 972mb.

My weather station supports a raw pressure reading, and a corrected reading. The corrected one was set years ago according to the shipping forecast, and (checked yesterday) it agrees with windy.com.

Is the BME280 the Adafruit thing? (OMG – $15 from Adafruit, or €30 from Amazon.fr)
Why not apply a correction to its reading to get a proper pressure report?

Bottomed out at 961mb at 8am. Its the same sensor as Adfruit use, but currently around £4.20 from ebay – so probably a knock off version and hence the lack of calibration.

As with temperatures, I’m not worried about absolute readings (as temperatures can vary by several degrees depending on where in the room it is located), but on trends and spikes.