Mammatus, or mammatocumulus, is a name for "pouch-like" patterns that hang from the base of clouds. They're often seen during severe weather events. Here are five photos of mammatus clouds, as sent in by you.
3 Day Pollen Outlook
Updated: Tuesday, September 16, 2014, 7:00 AM
|Low 0-20 grains/m³||Moderate 21-80 grains/m³||High 80+ grains/m³|