Running V5.03 but still got the usual error message, with the addition of a 503 Service Unavailable (something new?), rather than dropping back to the other forecast.
<!-- advforecast2.php (JSON) - V5.03 - 17-Jul-2017 on PHP 7.0.21-->
<!-- RAW NWS URL: http://forecast.weather.gov/MapClick.php?lat=33.6460&lon=-112.0070&unit=0&lg=english&FcstType=text&TextType=2 -->
<!-- zone=AZZ544 -->
<!-- corrected NWS API URL='https://api.weather.gov/points/33.646,-112.007/forecast' -->
<!-- curl fetching 'https://api.weather.gov/points/33.646,-112.007/forecast' -->
<!-- HTTP stats: RC=503 dest=23.222.163.46 port=443 (from sce=208.131.135.7)
Times: dns=0.053 conn=0.069 pxfer=0.122 get=0.236 total=0.358 secs -->
<!-- headers returned:
HTTP/1.1 503 Service Unavailable
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Content-Type: application/problem+json
X-Powered-By: PHP/5.6.25
Cache-Control: no-cache
Retry-After: 120
Access-Control-Allow-Origin: *
X-Server-ID: vm-bldr-nids-apiapp181.ncep.noaa.gov
X-Correlation-ID: f582fa3b-7266-472f-a7c3-2bd946f50d6b
X-Request-ID: f582fa3b-7266-472f-a7c3-2bd946f50d6b
Content-Length: 373
Date: Tue, 18 Jul 2017 14:27:57 GMT
Connection: keep-alive
Vary: Accept
-->
<!-- Oops.. point forecast unavailable RC=503 - using Zone instead -->
<!-- curl fetching 'https://api.weather.gov/zones/JSON-LD/AZZ544/forecast' -->
<!-- HTTP stats: RC=404 dest=23.222.163.46 port=443 (from sce=208.131.135.7)
Times: dns=0.000 conn=0.016 pxfer=0.067 get=0.198 total=0.265 secs -->
<!-- headers returned:
HTTP/1.1 404 Not Found
Server: nginx
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Content-Type: application/problem+json
X-Powered-By: PHP/5.6.25
Cache-Control: no-cache
Access-Control-Allow-Origin: *
X-Server-ID: vm-bldr-nids-apiapp5.ncep.noaa.gov
X-Correlation-ID: 83323958-c123-4156-a8cc-9f3d5a909cdf
X-Request-ID: 83323958-c123-4156-a8cc-9f3d5a909cdf
Date: Tue, 18 Jul 2017 14:27:57 GMT
Content-Length: 320
Connection: keep-alive
Vary: Accept
-->
<!-- loaded (Zone forecast) https://api.weather.gov/zones/JSON-LD/AZZ544/forecast - 810 bytes -->
<!-- wrote cache file ./cache/forecast-AZZ544-0-json.txt -->
<!-- meta info re: point='33.646,-112.007' zone='AZZ544' metacache= './cache/forecast-AZZ544-0-json-meta.txt' -->
<!-- metaZoneURL='https://api.weather.gov/zones/forecast/AZZ544' -->
<!-- loaded meta info from ./cache/forecast-AZZ544-0-json-meta.txt -->
<!-- META
Array
(
[city] => 6 Miles NE Phoenix
[state] => AZ
[point] => 33.646,-112.007
[forecastOfficeURL] => https://api.weather.gov/offices/PSR
[forecastZoneURL] => https://api.weather.gov/zones/forecast/AZZ544
[forecastZone] => AZZ544
[forecastHourlyURL] => https://api.weather.gov/points/33.646,-112.007/forecast/hourly
[forecastGridDataURL] => https://api.weather.gov/gridpoints/PSR/161,65
[observationStationsURL] => https://api.weather.gov/points/33.646,-112.007/stations
[countyZoneURL] => https://api.weather.gov/zones/county/AZC013
[countyZone] => AZC013
[fireWeatherZoneURL] => https://api.weather.gov/zones/fire/AZZ132
[fireWeatherZone] => AZZ132
[timeZone] => America/Phoenix
[radarStation] => KIWA
[zoneName] => North Phoenix/Glendale
[WFOname] => NWS Phoenix
)
-->
<p>NWS server https://api.weather.gov/zones/JSON-LD/AZZ544/forecast has an error.</p>
<p>View the source of this page for additional information in HTML comments.</p>
Thanks.