MEGACLUSTERS Foreshadow U.S. Pattern Change Just-After Mid-June

ECMWF “Monthlies” Roast The Great Plains JUL/AUG
06/05/2018, 8:36 am EST
NOAA Updates Drought Monitor
06/07/2018, 10:04 am EST
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Discussion: In 15 days the consensus of all models indicates a 500 MB trough in central North America. The ridge is in the Northwest and across Florida. The result? Texas and Northwest heat whereas East-Central/East rains suppress heat risk.

Fig. 1-2: Mega-cluster (all models) showing most likely and second-most likely 500 MB anomaly pattern in 15 days.

Fig. 3-4: Mega-cluster (all models) showing least likely 500 MB anomaly pattern in 15 days.