Near 100° Temps This Week From DC to NYC, Unusually Cool In Dallas!

Written by on July 15, 2013 in United States of America with 0 Comments

It’s all about the heat and humidity out there today if you live anywhere really east of the Mississippi thanks to a strong upper level ridge which will continue to build east over the next 72 hours. For those living anywhere from Richmond, Va all the way to Maine, expect temperatures to continue rising from yesterday low 90s to today’s mid 90s and by tomorrow and into the Wednesday-Thursday period, don’t be surprised to see 98 in DC, Philly and even New York City with low to mid 90s reaching all the way to northern New England. Heat indexes today will be very high and so mid-90s for all the major cities except Boston will feel closer to 105 by 4pm this afternoon with just a slight chance of a shower or storm.

Check out these temperatures as of 11pm

Source: wusa9

Source: wusa9

Below are the forecasted highs according to weather.com. While today is hot, it gets hotter tomorrow and especially into Wednesday, Thursday and Friday where the heatwave peaks with readings likely to approach 100, perhaps 98 or 99 in DC, Baltimore, Philadelphia and New York, possibly even Boston.

Source: weather.com

Source: weather.com

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Here are my forecasted highs over the next few days.

City                              Today             Tuesday      Wednesday     Thursday       Friday

Washington DC           95                    96                  97                      98                  99

Philadelphia                95                     96                  98                      98                 98

New York                     94                     95                  95                      96                  97

Boston                          93                     93                  94                      95                  96

Here’s the ECMWF 500mb chart by Wednesday

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

While the heat remains powerful from the Lower Midwest to East Coast today through Friday, eventually a trough drop south with a cold front which will herald substantial chance come late in the weekend. Strong to severe weather looks to break the major heat this weekend and by Sunday, all from Indiana to New Jersey will be back in much cooler and more refreshing air but it may well come at a price.

Here’s the 500mb chart by Sunday.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

The surface chart shows the dip in the jet and the front pushing south bringing heavy showers and thunderstorms.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

While it turns messy and rather stormy Saturday into Sunday, the messy weather continues into next week with a lot of rain expected throughout the Mid-Atlantic region.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

So, moral is it’s hot and getting hotter from the Ohio Valley on east but a system and trough digs in through the second half of the weekend with potential for severe weather and a rela dent in the heat by Sunday into early next week but flooding rainfall may return as a price for killing the heatwave.

An Unusual Mid July Day Of Widespread Rain & 70s From OKC to Dallas

As for Dallas and Oklahoma City, you folks are in the midst of an unusual weather setup. An upper low spinning overhead is bringing WIDESPREAD showers and storms, something you don’t see often at this time of year in this area. Especially heavy rain over WEST Texas.

Check out the ECMWF 500mb chart for this afternoon.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

Here’s the surface chart.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

Check out the forecasted high according to weather.com

Source: weather.com

Source: weather.com

Incidentally, it’s only 73 beneath heavy clouds at 11.25am in Dallas.. An unsually cool mid July day here for sure.

As for expected rain over the next 48 hours. Impressive!

Most of the rain remains to the south and west of the metroplex.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

Here’s the 72 hour totals. Some places S and W of Dallas could see locally 8-10 inches when all is said and done.

Courtesy/Owned by AccuWeather Pro

Courtesy/Owned by AccuWeather Pro

If the CFSv2 weekly is remotely correct then be aware that once this front running 6 days of blowtorch heat is out of the way, gone it is and perhaps for the rest of the summer over the Eastern US. In saying that, I think it cools but not as much as what the CFSv2 thinks.

Here’s the period from Jul 21 through 29.

wk1_wk2_20130714_NAsfcT

Notice that between Jul 29 and Aug 11 it keeps much of the nation cool but brings the heat back into the N Plains and Great Lakes week 4 (Aug 5-11)

wk3_wk4_20130714_NAsfcT

The CFSv2 holds on to the cool look for August. This may well be the last real blast of heat for much of the nation east of the Rockies!

usT2mMonInd1

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