$ ./1.icons.pl 
{
  "\@context" => [],
  "icons" => {
    bkn             => { description => "Mostly cloudy" },
    blizzard        => { description => "Blizzard" },
    cold            => { description => "Cold" },
    dust            => { description => "Dust" },
    few             => { description => "A few clouds" },
    fog             => { description => "Fog/mist" },
    fzra            => { description => "Freezing rain" },
    haze            => { description => "Haze" },
    hot             => { description => "Hot" },
    hurricane       => { description => "Hurricane conditions" },
    ovc             => { description => "Overcast" },
    rain            => { description => "Rain" },
    rain_fzra       => { description => "Rain/freezing rain" },
    rain_showers    => { description => "Rain showers (high cloud cover)" },
    rain_showers_hi => { description => "Rain showers (low cloud cover)" },
    rain_sleet      => { description => "Rain/sleet" },
    rain_snow       => { description => "Rain/snow" },
    sct             => { description => "Partly cloudy" },
    skc             => { description => "Fair/clear" },
    sleet           => { description => "Sleet" },
    smoke           => { description => "Smoke" },
    snow            => { description => "Snow" },
    snow_fzra       => { description => "Freezing rain/snow" },
    snow_sleet      => { description => "Rain/sleet" },
    tornado         => { description => "Tornado" },
    tropical_storm  => { description => "Tropical storm conditions" },
    tsra            => { description => "Thunderstorm (high cloud cover)" },
    tsra_hi         => { description => "Thunderstorm (low cloud cover)" },
    tsra_sct        => { description => "Thunderstorm (medium cloud cover)" },
    wind_bkn        => { description => "Mostly cloudy and windy" },
    wind_few        => { description => "A few clouds and windy" },
    wind_ovc        => { description => "Overcast and windy" },
    wind_sct        => { description => "Partly cloudy and windy" },
    wind_skc        => { description => "Fair/clear and windy" },
  },
}
URL = https://api.weather.gov/icons/land/day/tsra_sct,20/tsra_sct,40?size=medium
   tsra_sct => 'Thunderstorm (medium cloud cover)'

URL = https://api.weather.gov/icons/land/day/rain_showers,30/tsra_hi,30?size=medium
   tsra_hi => 'Thunderstorm (low cloud cover)'

URL = https://api.weather.gov/icons/land/night/rain_showers,30/rain_showers?size=medium
   rain_showers => 'Rain showers (high cloud cover)'

URL = https://api.weather.gov/icons/land/day/bkn?size=medium
   bkn => 'Mostly cloudy'

$