My quick and easy way to distinguish singular from plural when it comes to weather alerts.

WeatherAlertsCount.m

// "alerts" is the array that contains the weather alerts
int weatherAlertsCount = alerts.count;

NSString *weatherAlertLabelMain = @"";
NSString *weatherAlertLabelMinor = @"";

if (weatherAlertsCount > 1) {
    weatherAlertLabelMain = [NSString stringWithFormat:@"%d Weather Alerts", weatherAlertsCount];
}
else {
    weatherAlertLabelMain = [NSString stringWithFormat:@"%d Weather Alert", weatherAlertsCount];
}