<tr><th rowspan="2" valign="top" align="left">Category</th><th colspan="2" align="left">Wind speed</th><th rowspan="2" valign="top" align="left">Examples</th></tr>
<tr><td>miles per hour</td><td>meters per second</td>
<tr><td>Tropical depression</td><td>< 39 m.p.h.</td><td>< 17 m/s</td><td bgcolor="silver"></td></tr>
<tr><td>Tropical storm</td><td>39-73 m.p.h.</td><td>17-32 m/s</td><td>Tropical Storm Erin (2007)</td></tr>
<tr><td>Category 1 hurricane</td><td>74-95 m.p.h.</td><td>33-42 m/s</td><td>Hurricane Earl (1998)</td></tr>