Tropical Storm Boris formed Monday off Mexico's southern Pacific coast, threatening heavy rain, flooding, and mudslides in Guerrero and Oaxaca. - Storm located 85 miles southeast of Acapulco, with 40 mph winds moving northeast at 2 mph.
- Rainfall of 4 to 10 inches expected through Monday night, with life-threatening flooding and mudslides possible. - Tropical storm warning from Laguna de Chacahua, Oaxaca to Tecpan de Galeana, Guerrero.
- Boris is the second named storm of the Pacific hurricane season; no Atlantic cyclones have formed yet. Residents in affected areas should monitor the storm and prepare for potential hazards.