The North American Monsoon System: Recent Evolution and Current Status

1. The North American Monsoon System: Recent Evolution and Current Status Update prepared by Climate Prediction Center / NCEP 08 June 2015

2. Outline • Recent Evolution and Current Conditions • Summary • Climatology

3. Rainfall Patterns: Last 7 Days Slightly above-average rainfall has been observed over southern Mexico during the past week.

4. Rainfall Patterns: Last 30 Days Rainfall accumulations over the past 30 days are near-average across the western Mexico and southwestern U.S., and above-average over the eastern part of Mexico.

5. Recent Evolution: Rainfall

6. NCEP/GFS Forecast Rainfall forecasts call for above-average over the western Mexico and below-average across the eastern Mexico during the next week.

7. Summary • Slightly above-average rainfall has been observed over southern Mexico during the past week. • Rainfall accumulations over the past 30 days are near-average across the western Mexico and southwestern U.S., and above-average over the eastern part of Mexico. • NCEP/GFS Forecasts call for above-average rainfall over the western Mexico and below-average across the eastern Mexico during the next week.