Atlantic Tropical Development Outlook      Issued:   08:30 AM Monday October 22, 2001   [IMAGE]   Gulf of Mexico / Caribbean Sea:   A fairly strong upper-level low over western Cuba is responsible for considerable showers and thunderstorms across the southeastern Gulf through Florida today. Although such non-tropical upper-level features can occasionally develop a surface circulation and acquire tropical characteristics, we do not expect this system to develop into a tropical depression or a storm. However, the upper low will still produce very heavy rainfall across the southern Florida peninsula over the next 24-48 hours as it moves slowly northeastward toward the northern Bahamas.    Tropical Atlantic:   There are two weak tropical waves in the Atlantic, but neither wave shows any signs of organization this morning. Upper-level winds are forecast to remain unfavorable for any tropical development here this week.   Chris Hebert