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  1. #1
    Senior Member TomD77's Avatar
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    Record heat + humidity? See if you can beat this.

    As I prep for today's ride at 7:15 AM on the Florida Panhandle, it is 81 degrees and 100% humidity for a combined value of 181.

    Can anyone beat that? If so, not by much.

    But the weather forecast shows relief for us later in the day when the combined value will drop to 168 (98F & 70%). That's a heat index of 134F.

    I'm ready for fall.

  2. #2
    Semper Fi, A way of life. qcpmsame's Avatar
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    Tom,
    Where do you find the "Combined value" use? I use the NOAA standard heat index chart for work and my riding. I can see the ease of a comparison of combined values, just never heard of using this number.

    Attachment 264776 Click on the chart for a visible, readable sized chart.

    Bill
    Last edited by qcpmsame; 08-01-12 at 06:43 AM.
    "I Can Do All Things Through Christ Who Strengthens Me" Philippians 4:13

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  3. #3
    Senior Member work4bike's Avatar
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    I don't even track temp/humidity, I just ride. But it can be hard on those long shadeless road, like A1A between Jacksonville and St Augustine, but to me it's not so much the heat and humidity as it's the powerful sun beating down on me and radiating up from the road.

    One thing I do to stay heat tolerant is to run on my treadmill, which I keep in a small unairconditioned room with no ventilation whatsoever. I usually run for about an hour and by the end the room is a little "moist" and I'm drenched. So ususally I don't fret much over my rides.
    "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible."

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  4. #4
    Senior Member Bikey Mikey's Avatar
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    Dew point is the important number. Relative humidity is misleading--it's relative. It can be 74 and a relative humidity of 90 odd % and later in the day be 90 with humidity of 70 something %, yet the dew point may be the same or near same.

    Wiki Article
    Dew point C Dew point F Human perception[1] Rel. humidity at 32 C (90 F)
    > Higher than 26 C > Higher than 80 F Severely high. Even deadly for asthma related illnesses 65% and higher
    2426 C 7580 F Extremely uncomfortable, fairly oppressive 62%
    2124 C 7074 F Very humid, quite uncomfortable 5260%
    1821 C 6569 F Somewhat uncomfortable for most people at upper edge 4452%
    1618 C 6064 F OK for most, but all perceive the humidity at upper edge 3746%
    1316 C 5559 F Comfortable 3841%
    1012 C 5054 F Very comfortable 3137%
    < 10 C < 49 F A bit dry for some 30%

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    When I ride there is usually a lot of localized humidity around and under me.

  6. #6
    Senior Member
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    Quote Originally Posted by qcpmsame View Post
    Tom,
    Where do you find the "Combined value" use? I use the NOAA standard heat index chart for work and my riding. I can see the ease of a comparison of combined values, just never heard of using this number.

    Attachment 264776 Click on the chart for a visible, readable sized chart.

    Bill
    Today's forecast for NorCenTX is 111 and 60% humidity. That's off the chart. And only 24 days till the HHH !

  7. #7
    Senior Member rdtompki's Avatar
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    It's a contest in which I have no desire to excel. We've got a bit of humidity this am due to some marine air, but it's only about 60deg. Temps will get up to 80 or so, but with relatively low humidity. Would you all please move out to California, buy a house and improve our tax base. Thanks.
    Rick T
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    daVinci Joint Venture

  8. #8
    Senior Member
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    Quote Originally Posted by Monoborracho View Post
    Today's forecast for NorCenTX is 111 and 60% humidity. That's off the chart. And only 24 days till the HHH !
    48 C here, with 85 % humidity. Sauna stuff. And it's Ramadan, so no conspicuous rehydrating. Just back from 35kms - that's enough

  9. #9
    Senior Member jack002's Avatar
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    SW Missouri, so hot, here are all the highs for July:
    JULY
    1 103
    2 97
    3 99
    4 105
    5 105
    6 106
    7 103
    8 102
    9 92
    10 100
    11 99
    12 101
    13 100
    14 87
    15 99
    16 100
    17 100
    18 104
    19 107
    20 103
    21 106
    22 104
    23 105
    24 102
    25 104
    26 96
    27 104
    28 106
    29 106
    30 105
    31 100
    Biking isn't a sport because anybody can do it. I can bike, you can bike. For goodness sakes, my mother can bike! You don't see her on the cover of Sports Illustrated, do you?

  10. #10
    Senior Member TomD77's Avatar
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    Quote Originally Posted by qcpmsame View Post
    Tom,
    Where do you find the "Combined value" use? I use the NOAA standard heat index chart for work and my riding. I can see the ease of a comparison of combined values, just never heard of using this number.

    Attachment 264776 Click on the chart for a visible, readable sized chart.

    Bill
    It is, shall we say, unofficial. ;-) Never heard of it myself until a week or two back when someone on this forum made mention that when the value of heat + humidity got into the 150's, things were getting oppressive. I remember thinking that for several months a year it rarely gets DOWN to the 150's here.

    Just got back from a 30 mile and just got out of the shower. It was within tolerance level as long as I was moving and stopped every 6-7 miles to wring out my headband to keep the sweat from running through my eyes. Buy I have a 600 foot long white sand driveway that I have to walk because no way will my 25mm tires roll over that. Thought I was going to melt into a puddle of bubbling viscous liquid during that 2 minute walk.

    The dewpoint here is 81 degrees, on to quote Bikey Mikey's chart above: "Severely high. Even deadly for asthma related illnesses". Or from the Weather Channel: "Dangerous heat index. Limit outdoor exposure." Whee! Does that include biking?

  11. #11
    Senior Member John_V's Avatar
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    I tend to go by the Weather Channel app on my iPhone and iPad since it has the "feels like" temperature listed. It seems to be pretty much in line with the NOAA chart that Bill uses. So far, the one thing they don't seem to get right is the percentage of rain. This is especially bothers me when they give a high percentage of rain and not one drop falls the entire day, causing me to miss a ride.
    HCFR Cycling Team
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  12. #12
    Senior Member Bikey Mikey's Avatar
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    Quote Originally Posted by John_V View Post
    I tend to go by the Weather Channel app on my iPhone and iPad ...
    ...bothers me when they give a high percentage of rain and not one drop falls the entire day, causing me to miss a ride.
    Or, when they give a low percentage and I get drenched. I don't have a smart phone so I consult the computer, the webpages, for both weather.com and classic.wunderground.com the night before and when I get up to see what it's going to be like. I also check the live radar and predicted radar loops to get an idea of what's coming.

  13. #13
    Junior Member johnnyrt's Avatar
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    WOW thats is some HOT rides we all do for the love of our sport. Glad i Live in BC Canada ,where only the mountains seem to drain the sweat outta my achey body ...

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