The upper-level pattern over NA is set to reorganize into a western ridge & eastern trough disposition, with warmth directed towards the west coast and cooler unsettled conditions for central and eastern regions. This overall arrangement should prevail through the better part of the medium range and possibly beyond in some form.

00z GEFS 500mb height anomalies, days 6-10:

gfs-ens_z500aMean_namer_6

Days 11-15:

gfs-ens_z500aMean_namer_11

WPC total QPF for days 1-7:

p168i


New Euro weeklies will take us farther into the long range but first here’s the verification of the May 8 – 15th timeframe predicted by the May 1st run.

may1wk2verfy

And the updated run extending into mid-June.

may18wk2may18wk3may18wk4

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