Maritime and Marine Marine Weather and Meteorology 2 — Questions and Answers
Question 1: What is a 'gale warning' issued by the National Weather Service?
- Sustained winds of 34-47 knots forecast for marine waters (Correct answer)
- Sustained winds of 48-63 knots forecast for marine waters
- Winds exceeding 64 knots creating hurricane-force conditions
- Any wind over 20 knots in coastal or offshore areas
Correct answer: Sustained winds of 34-47 knots forecast for marine waters
A Gale Warning is issued when sustained winds of 34-47 knots (39-54 mph) are expected in the forecast area.
Question 2: When thunderstorms are present, what is the safest action for a small boater?
- Return to shore immediately and seek shelter away from water (Correct answer)
- Stay low in the boat and move to the center
- Raise the mast for better lightning rod effect
- Anchor in a protected cove until the storm passes
Correct answer: Return to shore immediately and seek shelter away from water
Returning to shore is the safest option since thunderstorms pose lightning and severe wind risks; leaving the water eliminates exposure.
Question 3: What weather phenomenon is indicated by a ring around the sun or moon?
- High cirrus clouds containing ice crystals, often preceding a warm front and rain within 24 hours (Correct answer)
- Clear weather with stable high pressure moving in
- Fog formation expected overnight
- A tropical storm system approaching from the south
Correct answer: High cirrus clouds containing ice crystals, often preceding a warm front and rain within 24 hours
A halo around the sun or moon is caused by light refracting through ice crystals in high cirrus clouds, which often precede a weather front.
Question 4: What does NOAA's 'Zone Forecast' for coastal waters cover?
- Winds, seas, and weather for specific ocean and coastal zones out to 100 miles offshore (Correct answer)
- Weather for all US waters from the coast to 200 nautical miles
- Only harbor and intracoastal waterway conditions
- Hurricane tracks and tropical storm paths
Correct answer: Winds, seas, and weather for specific ocean and coastal zones out to 100 miles offshore
Coastal zone forecasts cover conditions in specific marine zones out to approximately 100 nautical miles offshore including wind, wave height, and weather.
Question 5: What is the 'diurnal' sea breeze cycle in coastal areas?
- Onshore breeze by day as land heats faster than water, offshore breeze at night as land cools faster (Correct answer)
- Consistent winds blowing parallel to the coastline throughout the day
- Morning fog burning off by afternoon creating variable light winds
- Tidal currents creating predictable wind patterns twice daily
Correct answer: Onshore breeze by day as land heats faster than water, offshore breeze at night as land cools faster
Land heats and cools faster than water; this creates onshore sea breezes during the day and offshore land breezes at night.
Question 6: What does a red sky at morning indicate for mariners according to traditional weather lore — and meteorological science?
- Moisture-laden air and dust moving in from the west, often preceding rain or storms (Correct answer)
- Clear weather with a stable high pressure system approaching
- Cold front passage with improving conditions
- Fog is likely to form by mid-morning
Correct answer: Moisture-laden air and dust moving in from the west, often preceding rain or storms
Red morning sky indicates eastward-moving dry weather has passed and moist western air may bring precipitation — the old mariner's saying 'red sky at morning, sailors take warning' has meteorological basis.
Maritime and Marine Marine Weather and Meteorology 2
What is a 'gale warning' issued by the National Weather Service?