Typhoon Tip Posted July 18, 2013 Share Posted July 18, 2013 Then why have the criteria at all? We've had more uncomfortable days. I would like to think that thought went into these advisory/warning criteria. If the criteria is totally arbitrary/subjective than why have it. Or at least lower it... haha. Heh, but it is pretty clear that the value is more "pseudo-subjective", than totally so. The formula for calculating HI goes by HI = -42.379 + 2.04901523T + 10.14333127R - 0.22475541TR - 6.83783x10-3T2- 5.481717x10-2R2 + 1.22874x10-3T2R + 8.5282x10-4TR2 - 1.99x10-6T2R2 T = temperature (F) R = relative humidity (integer percentage). The explaination later states "Because this equationis obtained by multiple regression analysis, the heat index value (HI) has an error of ±1.3°F. Even though temperature and relative humidity are the only two variables in the equation, all the variables on the lists above are implied." That may be the key, right there... that + or - 1.3 margin for error. If we get the HI sitting at 98 or 99 for 2 to 3 hours, that may just be acceptable in error and "close enough" to hoist the advisory. Like wise, if it is 102 or 103 ? Cutting it too close "for comfort" - pun intended! haha Seriously though, since the formula is regressed and has the margin for error, that's code for subjective. But more importantly, the margin for error would quite logically require that if it's close they have to pull the trigger. At least, this would be a good defense. Aside, there were 2 to 3 hours of 100 to 104 in CT and Mass today, so I'm not sure bust applies to today. Maybe in that warning area, but again ... given the closeness on the dial... Link to comment Share on other sites More sharing options...
CT Rain Posted July 18, 2013 Share Posted July 18, 2013 They do the same thing with the first one inch snowfall of the season when they issue a snow advisory. If we're going to be accepting of that practice, then I guess what they're doing with all these heat advisories/warnings is OK too. I guess it's the spirit, if not the letter, of the criteria that matters, critical success index and all those other verification/skill metrics be damned. Yeah I don't really understand the point. Unfortunately it leads to an "overwarning" situation. Now a day where heat index values will be >110 (like the '95 event) will have the same "warning" as a day that had ~100 or ~101 HI values. The consistency between offices is a problem too. BOX had the warning yet the highest values (again) were in OKX's CT zones. Unless all the offices are on the same page we shouldn't begin blurring the lines. Link to comment Share on other sites More sharing options...
Ginx snewx Posted July 18, 2013 Share Posted July 18, 2013 Yeah I don't really understand the point. Unfortunately it leads to an "overwarning" situation. Now a day where heat index values will be >110 (like the '95 storm) will have the same "warning" as a day that had ~100 or ~101 HI values. The consistency between offices is a problem too. BOX had the warning yet the highest values (again) were in OKX's CT zones. Unless all the offices are on the same page we shouldn't begin blurring the lines. I maxed out at 109 today at work and it felt it, pretty impressive, I better post a pic of my siting though Link to comment Share on other sites More sharing options...
dendrite Posted July 18, 2013 Share Posted July 18, 2013 At least EWR reports a wind that often jives with other stations. Central Park often reports a light and variable wind.Are the wind instruments on top of Belvedere Castle still? Link to comment Share on other sites More sharing options...
Tropopause_Fold Posted July 18, 2013 Share Posted July 18, 2013 Yeah I don't really understand the point. Unfortunately it leads to an "overwarning" situation. Now a day where heat index values will be >110 (like the '95 storm) will have the same "warning" as a day that had ~100 or ~101 HI values. The consistency between offices is a problem too. BOX had the warning yet the highest values (again) were in OKX's CT zones. Unless all the offices are on the same page we shouldn't begin blurring the lines. Agree Link to comment Share on other sites More sharing options...
Ginx snewx Posted July 18, 2013 Share Posted July 18, 2013 Agree I really can not see the difference working, feeling, being out side in a HI of 100 or 108, its freaking miserable and life sucking. How about one warning that says, yo mofos its gonna be freaking hot out for the next three days, be careful, drink water and get inside AC. Link to comment Share on other sites More sharing options...
Tropopause_Fold Posted July 18, 2013 Share Posted July 18, 2013 I really can not see the difference working, feeling, being out side in a HI of 100 or 108, its freaking miserable and life sucking. How about one warning that says, yo mofos its gonna be freaking hot out for the next three days, be careful, drink water and get inside AC.. Except that there is actually a physiological response from your body. Cooling mechanisms begin to slow and eventually fail. There's a big difference between an HI of 100 and 108 Link to comment Share on other sites More sharing options...
CoastalWx Posted July 18, 2013 Share Posted July 18, 2013 . Except that there is actually a physiological response from your body. Cooling mechanisms begin to slow and eventually fail. There's a big difference between an HI of 100 and 108 Seeing those 88/75 temps brought back horrific memories of working on the Cape in August. I think I'm not along when I say that 88/75 is a lot worse than 94/68 or something like that. Basically the higher the dewpoint is per degree above 70, the exponentially worse it seems. Link to comment Share on other sites More sharing options...
Damage In Tolland Posted July 18, 2013 Share Posted July 18, 2013 Seeing those 88/75 temps brought back horrific memories of working on the Cape in August. I think I'm not along when I say that 88/75 is a lot worse than 94/68 or something like that. Basically the higher the dewpoint is per degree above 70, the exponentially worse it seems. Why did you change your sig? Link to comment Share on other sites More sharing options...
CoastalWx Posted July 18, 2013 Share Posted July 18, 2013 Why did you change your sig? It was all in fun. I didn't want to start any weenie banter and I was afraid Tip might hurt someone. Link to comment Share on other sites More sharing options...
Typhoon Tip Posted July 18, 2013 Share Posted July 18, 2013 It was all in fun. I didn't want to start any weenie banter and I was afraid Tip might hurt someone. Lol Link to comment Share on other sites More sharing options...
Typhoon Tip Posted July 18, 2013 Share Posted July 18, 2013 Nice, two light rain showers and a sea-breeze boundary later, and it's 82 at my place. DP is still too drippy but at least it isn't 95! Also, I saw two micro rope funnels sticking out of the side of the TCU's when these rains showers came overhead today. They were nicely side lit by the sun. Those happen far more commonly than folks may think. I see a handful of them every summer. They are probably no more than a several hundred feet long, and about 10 feet in diameter, and they stick out of the mid TCU depths out into the clear air. They tend to be partially transparent with only weakly condensate tubular forms. Fun personal little nerdly thing I look for... Link to comment Share on other sites More sharing options...
forkyfork Posted July 18, 2013 Share Posted July 18, 2013 Are the wind instruments on top of Belvedere Castle still?yes Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 I knew it what hot when crossing over the Jamestown Bridge and the temp did not drop 92F on the island. Wow. Possibly my last trip there for a while Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 Seeing those 88/75 temps brought back horrific memories of working on the Cape in August. I think I'm not along when I say that 88/75 is a lot worse than 94/68 or something like that. Basically the higher the dewpoint is per degree above 70, the exponentially worse it seems.Agree. Dews kill ya Link to comment Share on other sites More sharing options...
mob1 Posted July 18, 2013 Share Posted July 18, 2013 Philly is @ 95/75 and their HI has been aob 105 for the past 6 hours. DC's dew is at 79! Link to comment Share on other sites More sharing options...
CoastalWx Posted July 18, 2013 Share Posted July 18, 2013 Philly is @ 95/75 and their HI has been aob 105 for the past 6 hours. DC's dew is at 79! Looks like they had some rain which is probably steaming off the city adding to the dews. Link to comment Share on other sites More sharing options...
Damage In Tolland Posted July 18, 2013 Share Posted July 18, 2013 85.3/75. Ill miss this for a few days early. Next week but we know it comes right back Wed/ Thurs Link to comment Share on other sites More sharing options...
forkyfork Posted July 18, 2013 Share Posted July 18, 2013 philly is another swamp airport like dc Link to comment Share on other sites More sharing options...
CoastalWx Posted July 18, 2013 Share Posted July 18, 2013 85.3/75. Ill miss this for a few days early. Next week but we know it comes right back Wed/ Thurs Nah, it'll be back for January. Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 philly is another swamp airport like dcBig flat cheap pieces of land Link to comment Share on other sites More sharing options...
DomNH Posted July 18, 2013 Share Posted July 18, 2013 Playing 18 tomorrow. Ball should be flying with a heat index 105F+! Link to comment Share on other sites More sharing options...
Damage In Tolland Posted July 18, 2013 Share Posted July 18, 2013 Nah, it'll be back for January.Well if the ORH heat wave analog holds true then yeah we're all in trouble this winter Link to comment Share on other sites More sharing options...
CoastalWx Posted July 18, 2013 Share Posted July 18, 2013 Well if the ORH heat wave analog holds true then yeah we're all in trouble this winter You want the ridge, you got it. Link to comment Share on other sites More sharing options...
forkyfork Posted July 18, 2013 Share Posted July 18, 2013 Big flat cheap pieces of land dca and phl are both next to rivers. no wonder dca has ridiculous mins and dewpoints http://weather.gladstonefamily.net/site/KDCA http://weather.gladstonefamily.net/site/KPHL zoom out Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 Weird siting. Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 Playing 18 tomorrow. Ball should be flying with a heat index 105F+!Greens will be quickBeer cart will be busy Link to comment Share on other sites More sharing options...
Ginx snewx Posted July 18, 2013 Share Posted July 18, 2013 Sharknado perfect AC and beer night watching B movie with some cool weather and surf video, it's horrible Link to comment Share on other sites More sharing options...
Ginx snewx Posted July 18, 2013 Share Posted July 18, 2013 . Except that there is actually a physiological response from your body. Cooling mechanisms begin to slow and eventually fail. There's a big difference between an HI of 100 and 108 link? curious Link to comment Share on other sites More sharing options...
HoarfrostHubb Posted July 18, 2013 Share Posted July 18, 2013 Sharknado perfect AC and beer night watching B movie with some cool weather and surf video, it's horribleIf there is one thing I know, it's timing waves. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.