famartin Posted July 19, 2011 Share Posted July 19, 2011 Broken off from the obs thread, in response to Thunder Road: Well, we can look back in time.. here's all the 100-degree days since 1981: 7/7/2010: High 103, noon reading 99, 2PM reading 100 7/6/2010: High 102, noon reading 98, 2PM reading 100 8/9/2001: High 101, noon reading 95, 2PM reading 100 8/8/2001: High 100, noon reading 93, 2PM reading 96 7/5/1999: High 100, noon reading 95, 2PM reading 98 7/15/1995: High 103, noon reading 98, 2PM reading 101 6/19/1994: High 100, noon reading 96, 2PM reading 98 6/15/1994: High 100, noon reading 95, 2PM reading 98 7/10/1993: High 101, noon reading 97, 2PM reading 99 7/9/1993: High 100, noon reading 95, 2PM reading 99 7/8/1993: High 100, noon reading 95, 2PM reading 99 6/16/1991: High 100, noon reading 95, 2PM reading 97 7/17/1988: High 102, noon reading 95, 2PM reading 101 7/16/1988: High 102, noon reading 95, 2PM reading 99 7/11/1988: High 100, noon reading 93, 2PM reading 97 7/10/1988: High 100, noon reading 90, 2PM reading 95 6/22/1988: High 100, noon reading 96, 2PM reading 99 Adjusting those days which were above 100 down to 100, it would seem the rule of thumb is as follows: If PHL hits 94 by noon, there's a reasonable chance of 100. If PHL hits 98 at 2PM, there's a reasonable chance of 100. Link to comment Share on other sites More sharing options...
phlwx Posted July 20, 2011 Share Posted July 20, 2011 How about 90 at 10? How often on the 100+ days of latE? Link to comment Share on other sites More sharing options...
famartin Posted July 20, 2011 Author Share Posted July 20, 2011 How about 90 at 10? How often on the 100+ days of latE? I was wondering if anyone would ask that... 7/7/2010: High 103, 10AM reading 95 7/6/2010: High 102, 10AM reading 93 8/9/2001: High 101, 10AM reading 87 8/8/2001: High 100, 10AM reading 90 7/5/1999: High 100, 10AM reading 91 7/15/1995: High 103, 10AM reading 91 6/19/1994: High 100, 10AM reading 90 6/15/1994: High 100, 10AM reading 88 7/10/1993: High 101, 10AM reading 93 7/9/1993: High 100, 10AM reading 92 7/8/1993: High 100, 10AM reading 92 6/16/1991: High 100, 10AM reading 89 7/17/1988: High 102, 10AM reading 88 7/16/1988: High 102, 10AM reading 87 7/11/1988: High 100, 10AM reading 88 7/10/1988: High 100, 10AM reading 82 6/22/1988: High 100, 10AM reading 89 Adjusting for highs above 100 and averaging we come to 89. Link to comment Share on other sites More sharing options...
tombo82685 Posted July 20, 2011 Share Posted July 20, 2011 dang thats a huge temp jump, 82 at 10 am and it hits 100 wow Link to comment Share on other sites More sharing options...
famartin Posted July 20, 2011 Author Share Posted July 20, 2011 7/10/1988 seems to throw a wrench in the averages... it might be better (and easier to remember) to just add a degree to the 10AM and noon readings and forget about 2PM... so as a rule of thumb, to get to 100 at PHL, it needs to reach 90 by 10AM and 95 by noon. Link to comment Share on other sites More sharing options...
famartin Posted July 20, 2011 Author Share Posted July 20, 2011 dang thats a huge temp jump, 82 at 10 am and it hits 100 wow Yeah it just kept rising right thru 5PM that day. Link to comment Share on other sites More sharing options...
BucksCO_PA Posted July 20, 2011 Share Posted July 20, 2011 Be interesting to see the hrs back in 1966: 7/2 - 100 after a low of 63 7/3 - 104 after a low of 68 7/4 - 103 after a low of 72 pretty impressive to drop back to 68 the morning after triple digits, dry heat & a bone dry June preceeding the heat did the trick Link to comment Share on other sites More sharing options...
famartin Posted July 20, 2011 Author Share Posted July 20, 2011 Be interesting to see the hrs back in 1966: 7/2 - 100 after a low of 63 7/3 - 104 after a low of 68 7/4 - 103 after a low of 72 pretty impressive to drop back to 68 the morning after triple digits, dry heat & a bone dry June preceeding the heat did the trick Area around the airport was a bit less developed back then. Last summer TTN went from 64 on the morning of 7/4 to 99 on the afternoon of 7/4 to 68 on the morning of 7/5. Link to comment Share on other sites More sharing options...
Analog96 Posted July 20, 2011 Share Posted July 20, 2011 I was wondering if anyone would ask that... 7/7/2010: High 103, 10AM reading 95 7/6/2010: High 102, 10AM reading 93 8/9/2001: High 101, 10AM reading 87 8/8/2001: High 100, 10AM reading 90 7/5/1999: High 100, 10AM reading 91 7/15/1995: High 103, 10AM reading 91 6/19/1994: High 100, 10AM reading 90 6/15/1994: High 100, 10AM reading 88 7/10/1993: High 101, 10AM reading 93 7/9/1993: High 100, 10AM reading 92 7/8/1993: High 100, 10AM reading 92 6/16/1991: High 100, 10AM reading 89 7/17/1988: High 102, 10AM reading 88 7/16/1988: High 102, 10AM reading 87 7/11/1988: High 100, 10AM reading 88 7/10/1988: High 100, 10AM reading 82 6/22/1988: High 100, 10AM reading 89 Adjusting for highs above 100 and averaging we come to 89. I always use 90 at 10 AM and 93 at 11 AM. Normally, if you're 90 at 10, like you said, you have a good chance at 100. Link to comment Share on other sites More sharing options...
Analog96 Posted July 20, 2011 Share Posted July 20, 2011 Area around the airport was a bit less developed back then. Last summer TTN went from 64 on the morning of 7/4 to 99 on the afternoon of 7/4 to 68 on the morning of 7/5. That was a particularly dry heat wave. Link to comment Share on other sites More sharing options...
famartin Posted July 20, 2011 Author Share Posted July 20, 2011 Be interesting to see the hrs back in 1966: 7/2 - 100 after a low of 63 7/3 - 104 after a low of 68 7/4 - 103 after a low of 72 pretty impressive to drop back to 68 the morning after triple digits, dry heat & a bone dry June preceeding the heat did the trick Here are these numbers: 7/2: 84, 94, 97 7/3: 92, 98, 100 7/4: 89, 96, 101 Adjusting and averaging you get 86 at 10AM, 94 at noon, 97 at 2PM. Link to comment Share on other sites More sharing options...
Rainshadow Posted July 21, 2011 Share Posted July 21, 2011 Here are these numbers: 7/2: 84, 94, 97 7/3: 92, 98, 100 7/4: 89, 96, 101 Adjusting and averaging you get 86 at 10AM, 94 at noon, 97 at 2PM. I'd take those dew points during that heat wave if I had a choice. Link to comment Share on other sites More sharing options...
chubbs Posted July 21, 2011 Share Posted July 21, 2011 Remember 66 heat wave well. No AC then. Went to picnic on the 4'th and was outside most of the day until dark. Can't imagine doing that in this heat wave. Broke with a heavy Tstorm just after we got home. Link to comment Share on other sites More sharing options...
ezweather Posted July 21, 2011 Share Posted July 21, 2011 Had to post this.. At 1:21pm, here in Voorhees, my weather station showed a dewpoint of 81 degrees with a heat indeix of 123 degrees. The dewpooint even peaked at 82 at 11:33am. Stil at this hour, dewpoint continues to hover about 120 outside. Temperature up to 95. http://www.weatherlink.com/user/ezweather/index.php?view=main&headers=1 Link to comment Share on other sites More sharing options...
Parsley Posted July 21, 2011 Share Posted July 21, 2011 Had to post this.. At 1:21pm, here in Voorhees, my weather station showed a dewpoint of 81 degrees with a heat indeix of 123 degrees. The dewpooint even peaked at 82 at 11:33am. Stil at this hour, dewpoint continues to hover about 120 outside. Temperature up to 95. http://www.weatherli...=main&headers=1 Putrid, in an exciting sort of way. Link to comment Share on other sites More sharing options...
ezweather Posted July 21, 2011 Share Posted July 21, 2011 I litterally had to look at that several times to believe what I was seeing.. Just brutally hot out there and that humidity is very high... Putrid, in an exciting sort of way. Link to comment Share on other sites More sharing options...
famartin Posted July 21, 2011 Author Share Posted July 21, 2011 Had to post this.. At 1:21pm, here in Voorhees, my weather station showed a dewpoint of 81 degrees with a heat indeix of 123 degrees. The dewpooint even peaked at 82 at 11:33am. Stil at this hour, dewpoint continues to hover about 120 outside. Temperature up to 95. http://www.weatherli...=main&headers=1 All the airports around the area (save the bogus Coatesville AWOS) are showing dewpoints in the mid 70s, a handful into the upper 70s. I think some of the personal weather stations are having trouble with dewpoints right now. Link to comment Share on other sites More sharing options...
ezweather Posted July 21, 2011 Share Posted July 21, 2011 For whatever its worth.. Mine is a Davis Advantage Pro. Be curious how many other stations maybe reporting what I'm seeing.. Probably check that later today. Just surprised how high that dewpoint its reading.. Either way, it is dangerously hot out there now.. All the airports around the area (save the bogus Coatesville AWOS) are showing dewpoints in the mid 70s, a handful into the upper 70s. I think some of the personal weather stations are having trouble with dewpoints right now. Link to comment Share on other sites More sharing options...
famartin Posted July 21, 2011 Author Share Posted July 21, 2011 For whatever its worth.. Mine is a Davis Advantage Pro. Be curious how many other stations maybe reporting what I'm seeing.. Probably check that later today. Just surprised how high that dewpoint its reading.. Either way, it is dangerously hot out there now.. Here's the 2PM dewpoints around Philly PHL 74 PNE 74 LOM 72 VAY 76 ILG 78 PTW 71 DYL 70 MQS 84 WRI 75 TTN 73 MIV 78 UKT 70 ACY 75 NEL 70 XLL 72 MJX 75 RDG 69 DOV 77 ABE 69 APG 73 Link to comment Share on other sites More sharing options...
Isotherm Posted July 21, 2011 Share Posted July 21, 2011 Here's the 2PM dewpoints around Philly PHL 74 PNE 74 LOM 72 VAY 76 ILG 78 PTW 71 DYL 70 MQS 84 WRI 75 TTN 73 MIV 78 UKT 70 ACY 75 NEL 70 XLL 72 MJX 75 RDG 69 DOV 77 ABE 69 APG 73 My DVP2 recorded a dew point high of 81F, which is pretty close to reality I'd say, given most stations around here have been upper 70s/80. I think this is the highest I recall seeing dews (78-80 for much the day). Dew point is down to 77 now. Link to comment Share on other sites More sharing options...
ezweather Posted July 21, 2011 Share Posted July 21, 2011 Just checking my station.. at this hour dewpoint is 81 with heat index of 121 degrees.. Just brutal out there.. My DVP2 recorded a dew point high of 81F, which is pretty close to reality I'd say, given most stations around here have been upper 70s/80. I think this is the highest I recall seeing dews (78-80 for much the day). Dew point is down to 77 now. Link to comment Share on other sites More sharing options...
famartin Posted July 21, 2011 Author Share Posted July 21, 2011 My DVP2 recorded a dew point high of 81F, which is pretty close to reality I'd say, given most stations around here have been upper 70s/80. I think this is the highest I recall seeing dews (78-80 for much the day). Dew point is down to 77 now. 4PM dewpoints in Jersey: FWN 71 12N 68 MMU 68 CDW 71 TEB 70 EWR 70 SMQ 69 TTN 71 BLM 73 WRI 77 VAY 77 NEL 70 MJX 72 ACY 74 MIV 77 WWD 77 Link to comment Share on other sites More sharing options...
Cary Posted July 22, 2011 Share Posted July 22, 2011 PHL @ 94 as of 9:54 Link to comment Share on other sites More sharing options...
yak Posted July 22, 2011 Share Posted July 22, 2011 Some 10 a.m. observations for comparison: Heat indexes already running 105-110+ at mid morning. BOS 91/75 HI 104 HFD 96/73 HI 106 JFK 95/75 HI 107 EWR 98/74 HI 109 TTN 96/76 HI 109 PHL 94/76 HI 107 RDG 95/77 HI 110 MDT 92/76 HI 104 ILG 93/80 HI 112 BWI 96/76 HI 111 DCA 91/77 HI 110 Link to comment Share on other sites More sharing options...
Thunder Road Posted July 22, 2011 Share Posted July 22, 2011 yeah so about that 90 by 10am thing..... As of 10:20am, it's 95.5/80 imby. And PNE was reporting 96/76 at 9:54. I say we make a run at 103 in Philly today Link to comment Share on other sites More sharing options...
yak Posted July 22, 2011 Share Posted July 22, 2011 Any predictions based on the above 10 a.m. readings? 98 at Newark and 110+ heat index readings at 10 a.m. Seriously? I have to think that we are headed for one of the most uncomfortable days in East Coast history if not one of the hottest. Link to comment Share on other sites More sharing options...
airmarci Posted July 22, 2011 Share Posted July 22, 2011 ACY @ 10AM - 95/78 HI 112 Link to comment Share on other sites More sharing options...
NaoPos Posted July 22, 2011 Share Posted July 22, 2011 Guys, try and keep obs in the obs thread? Not a mod by any means, just trying to keep things simple Link to comment Share on other sites More sharing options...
Rainshadow Posted July 22, 2011 Share Posted July 22, 2011 No problem hitting 100 today. Gotta give the modeling credit about forecasting these insufferable dew points. Link to comment Share on other sites More sharing options...
Eskimo Joe Posted July 22, 2011 Share Posted July 22, 2011 No problem hitting 100 today. Gotta give the modeling credit about forecasting these insufferable dew points. Kind of upset this heatwave will end without any severe weather episode, we could use the rain. Link to comment Share on other sites More sharing options...
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