Dallas Heat Wave 2018 (El Paso, Vega: how much, stats, places)

[KathrynAragon]

Originally Posted by Rakin

This could be the start of one of those record extremely hot 100+ summer days like we saw back in 1980, 1997 and 2011.

Let's hope not. We don't need to set any records.

I totally agree. Much of the country is significantly hotter than normal for this time of year. I DREAD a long, hot summer but frankly after several pleasant summers here in NE Texas, we're due for a scorcher.

No rain in sight either. I feel a big water bill coming on.

[kyam11]

Originally Posted by Stevehanrahan41

At 107 it would have to hit 34% humidity to hit 120

Oops. Yep i put 117 in instead of 107. I think it's gonna be close.

[DAX_]

Dallas is definitely hotter than Phoenix and Las Vegas in the summer time

Atleast those cities cool off at night

[serger]

Heat Index Calculation

[Texyn]

Originally Posted by lvmensch

You unfortunately do not understand this stuff.

No, you're the one who doesn't:

Originally Posted by lvmensch

OK try....

https://weather.com/weather/tenday/l...rport+DFW:9:US

Calling for 105 and 43% rh. Run the numbers.

As EDS_ mentioned, relative humidity is inversely related to temperature. So when the temperature is highest, the relative humidity is lowest, and vice versa. The "43%" is referring to the daily average relative humidity, which factors in both the minimum and maximum relative humidity values.

[Texyn]

Originally Posted by DAX_

Dallas is definitely hotter than Phoenix and Las Vegas in the summer time

At least those cities cool off at night

No they don't, unless you think that average summer lows around 80F and above are cool:
https://en.wikipedia.org/wiki/Phoenix,_Arizona#Climate
https://en.wikipedia.org/wiki/Las_Vegas#Climate

In contrast, average summer lows in Dallas are in the mid 70s:
https://en.wikipedia.org/wiki/Dallas#Climate

[lvmensch]

Originally Posted by Texyn

No, you're the one who doesn't:



As EDS_ mentioned, relative humidity is inversely related to temperature. So when the temperature is highest, the relative humidity is lowest, and vice versa. The "43%" is referring to the daily average relative humidity, which factors in both the minimum and maximum relative humidity values.

Sorry but I do understand. And on Saturday if it goes as projected there is a very good chance that Dallas will surpass a 117 or even 120 heat index. 120 requires about 36% RH if the 106 is reached.

Las Vegas tends to reach quite high temperatures in late June and early July. But that is before there is any moisture around. And it actually leads to relative low heat indexes. Higher heat indexes actually occur in second half of July and August with more moisture present. The temperatures however will be in the low 100s. And practically the very hot very dry days are actually more pleasant than the lower but wetter ones.

[DAX_]

Originally Posted by Texyn

No they don't, unless you think that average summer lows around 80F and above are cool:
https://en.wikipedia.org/wiki/Phoenix,_Arizona#Climate
https://en.wikipedia.org/wiki/Las_Vegas#Climate

In contrast, average summer lows in Dallas are in the mid 70s:
https://en.wikipedia.org/wiki/Dallas#Climate

Thats a 40 degree change in tempature.

[Dallaz]

Originally Posted by lvmensch

Often point out that Dallas and Houston are actually worse than Las Vegas - For instance over next weekend you are going to hit heat index well into the 120s. That simply does not happen in LV. We will be hotter than Dallas much of the summer but the heat index will virtually always be lower.

I’ve never heard of Dallas having heat indices above 120. 110 degrees? Absoultely. 120 degrees? No way.

[lvmensch]

Originally Posted by Dallaz

I’ve never heard of Dallas having heat indices above 120. 110 degrees? Absoultely. 120 degrees? No way.

Watch this weekend. Should be interesting.