There seems to be a couple of issues.
1) your site is running on PHP 5.6 .. you should update to PHP 7.4 or 8.1 soon. That PHP version has gone off support quite a while ago.
2) in Settings.php, you have
$SITE['NWSforecasts'] = array( // for the advforecast2.php V3.xx version script
// use "Zone|Location|Point-printableURL", as entries .. first one will be the default forecast.
"BOX|Fall River|https://forecast.weather.gov/MapClick.php?lat=41.69735000000003&lon=-71.14364999999998#.XuuXhecpCM8",
and it should read
$SITE['NWSforecasts'] = array( // for the advforecast2.php V3.xx version script
// use "Zone|Location|Point-printableURL", as entries .. first one will be the default forecast.
"MAZ020|Fall River|https://forecast.weather.gov/MapClick.php?lat=41.6974&lon=-71.1437&unit=0&lg=english&FcstType=text&TextType=2",
likewise
$SITE['fcsturlNWS'] = 'https://forecast.weather.gov/MapClick.php?lat=41.69735000000003&lon=-71.14364999999998#.XuuXhecpCM8';
should read as
$SITE['fcsturlNWS'] = 'https://forecast.weather.gov/MapClick.php?lat=41.6974&lon=-71.1437&unit=0&lg=english&FcstType=text&TextType=2';
3) running check-fetch-times.php?show=versions blows up with
Error 503. Service Unavailable
The server is temporarily unavailable. Please check back shortly. If this problem persists, please contact our Technical Support department.
so something in PHP 5.6 is broken to get that fatal error. Check the error_log for your website and it should indicate the PHP Fatal error causing that problem. It's likely why your homepage (and several other pages) refuse to fully load.
Looking at wxnewpage.php on your site shows it does complete execution, so the issue is not in Settings.php, common.php, top.php, menubar.php, flyout-menu.php, footer.php structural files)
Running nws-alerts.php also fails with a 503 error.
I'd suggest contacting tech support for your hoster to update the PHP on your site to PHP 7.4, then run check-fetch-times.php?show=versions to see what scripts may need updates to properly work.