/grog/weather/comparative-dewpoint-2023-01-30-big.png does not exist on this server. I've tried a number of alternatives, but I've drawn a blank. Sorry.
The web master has been informed of the problem, and it will hopefully be fixed soon. Come back tomorrow. In the meantime, you may like to check the index for this directory.
Make sure that you have spelt the URL correctly according to the punctuation rules. In particular, URLs use a slash (/) for delimiting components, and a backslash (\) has no particular meaning. Also, upper case and lower case are different, so, for example, /grog/photos/photos.php and /grog/photos/Photos.php are two different pages.