Related Clues:

• With frost, winter harbinger
• Kind of riser
• Loud outburst
• Beaufort Scale biggie
• Longtime Lucille Ball foil Gordon
• Before it gets crowded
• Before it's needed
• Term in meteorology
• At the crack of dawn, say
• At cock's crow
• Flag flapper
• Less than a hurricane
• Unexpected, in a way
• Before sunrise
• Fierce wind