First issue is your Settings.php has $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.
"WAC033|Renton|https://forecast.weather.gov/MapClick.php?lat=47.462&lon=-122.2015&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|Kent|https://forecast.weather.gov/MapClick.php?lat=47.3811&lon=-122.234&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|Tukwila|https://forecast.weather.gov/MapClick.php?lat=47.4626&lon=-122.256&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|Bellevue|https://forecast.weather.gov/MapClick.php?lat=47.61&lon=-122.1879&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|Seattle|https://forecast.weather.gov/MapClick.php?lat=47.6036&lon=-122.3294&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|North Bend|https://forecast.weather.gov/MapClick.php?lat=47.4935&lon=-121.7831&unit=0&lg=english&FcstType=text&TextType=2",
"WAC053|Tacoma|https://forecast.weather.gov/MapClick.php?lat=47.2551&lon=-122.4416&unit=0&lg=english&FcstType=text&TextType=2",
"WAC033|Bothell|https://forecast.weather.gov/MapClick.php?lat=47.7621&lon=-122.2031&unit=0&lg=english&FcstType=text&TextType=2",
"WAC061|Everett|https://forecast.weather.gov/MapClick.php?lat=47.9766&lon=-122.206&unit=0&lg=english&FcstType=text&TextType=2",
"WAC073|Bellingham|https://forecast.weather.gov/MapClick.php?lat=48.7524&lon=-122.4712&unit=0&lg=english&FcstType=text&TextType=2",
"WAC067|Olympia|https://forecast.weather.gov/MapClick.php?lat=47.0493&lon=-122.8676&unit=0&lg=english&FcstType=text&TextType=2",
"WAC009|Port Angeles|https://forecast.weather.gov/MapClick.php?lat=48.1187&lon=-123.4313&unit=0&lg=english&FcstType=text&TextType=2",
);
ALL those WACnnn values are incorrect.. they are County Zones, not Forecast Zones WAZnnn -- you need to respecify those with the correct forecast zones.
In your Settings,php you have $SITE['NWSalertsCodes'] = array(
"King County|WAZ558|WAC033",
"Snohomish County|WAZ556|WAC061",
"Pierce County|WAZ509|WAC053",
"Kitsap County|WAZ559|WAC035",
"Skagit County|WAZ506|WAC057",
"Whatcom County|WAZ567|WAC073",
"Clallam County|WAZ653|WAC009",
"Jefferson County|WAZ513|WAC031",
// "San Francisco|CAZ006|CAC075"
);
and since there are more than 4 unique zones, I'm assuming you have a cron job to run nws-alerts.php regularly. If you do/did -- check to make sure it is still running correctly -- that could be the reason why the alerts aren't showing up.
I ran the script manually via browser, and it has refreshed your site.. looks like the cron job to run it is not actually running.