checking "Replace NWS weather images" crashed the website.

The function failing is at nws_weather.module lines 976-989:

/**
 *
 */
function nws_weather_override_image($image) {
  if ($override = variable_get('nws_weather_override_bool', 0)) {
    $result = db_query("SELECT img FROM {nws_weather_config} WHERE url = '%s'", $image);
    $row = db_fetch_array($result);
    $directory = variable_get('nws_weather_override_directory', NWS_WEATHER_OVERRIDE_DIRECTORY_DEFAULT);
    // Need $override switch set before will override image.
    if ($override && $fname = $row['img']) {
      $image = $directory . '/' . $fname;
    }
  }
  return $image;

The db_query and db_fetch_array calls are both still formatted for D6 and fail with D7. db_query expects arguments to be passed in an array and db_fetch_array no longer is supported in D7. The changes below pass the query argument in an array, replace the db_fetch_array with a $result->fetchfield(), and inserts a test to see if the field was successfully retrieved.

I changed the function to:

/**
 *
 */
 function nws_weather_override_image($image) {
     if ($override = variable_get('nws_weather_override_bool', 0)) {
         $result = db_query('SELECT n.img FROM {nws_weather_config} n WHERE n.url = :url', array(':url'=>$image));
         $newimage = $result->fetchfield();
         if ($newimage) {
             $directory = variable_get('nws_weather_override_directory', NWS_WEATHER_OVERRIDE_DIRECTORY_DEFAULT);
             // Need $override switch set before will override image.
             if ($override && $fname = $newimage) {
                 $image = $directory . '/' . $fname;
             }
         }
     }
     return $image;

One of these days I'm going to figure out how to develop a patch! For now, this will have to do.