While the heat is well and truly on over the Southeast, it continues to build over the West too with Bill pushing northward between the twin ridges. While we’re seeing the hottest weather since 2011 over parts of the Southeast coastal plain, the first 110s of the season are now sweating both Phoenix and Vegas.

Here were the highs yesterday over South Carolina. Charleston was 1 shy of the record.

After records were set for a 2nd and 3rd day yesterday for some in the Southeast, today will be another record-breaker.

Combination of near 100F air temeratures and dew points in the 70s to near 80 thanks to low-mid 80F water just offshore, heat indexes may approach or surpass 110F along the South Carolina ocean communities this afternoon.

Heat advisory in affect once again today.

It’s just hit 100 in Macon, GA…

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What’s interesting however is that the models are indicating a cool down over the Midwest, Great Lakes and Northeast in the wake of Bill which as previously stated, could present a big flood threat not just over the saturated Plains but also for the Ohio Valley and parts of the Northeast.

Thanks to training thunderstorms crossing Dallas, the Trinity River has burst it’s banks this afternoon.

Bill is slow moving and may take till early next week before crossing the Big Cities of the Northeast.

There are signs now that the ridge holds firm over the relatively dry Southeast well into next week and may in fact be stronger, not weaker based on the latest model projections.

Latest GFS ensemble 5-day mean 500mb height anomalies show the twin ridges holding strong through the next 10 days.

Here’s the latest 2m temps (C) according to the GFS ensemble 5-day mean through the next 15 days. Yes in the video I state the weakening of the SE ridge. That may not be the case now.

Notice in the below EPS control 500mb height anomalies that the SE ridge strengthens to 594dm day 5-10.

The GFS meteogram shows temps holding close to 100 in Columbia, SC throughout the next 8 days.

It gets dangerously hot through the second half of this week across the Southwest.

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