Question: are 20 knot winds strong?
Answer: Small Craft Warning - This is issued if winds are expected to sustain in the range of 20 to 33 knots. Gale Warning - This is issued if winds are expected to sustain in the range of 34 to 47 knots. Storm Warning - This is issued if winds are expected to sustain in the range of 48 to 63 knots.