A-L-E-X Posted June 27, 2011 Share Posted June 27, 2011 http://en.wikipedia.org/wiki/Northeast_Blackout_of_2003 Sequence of events The following is the blackout's sequence of events on August 14, 2003[13][14][15] (times in EDT): 12:15 p.m. Incorrect telemetry data renders inoperative the state estimator, a power flow monitoring tool operated by the Indiana-based Midwest Independent Transmission System Operator (MISO). An operator corrects the telemetry problem but forgets to restart the monitoring tool. 1:31 p.m. The Eastlake, Ohio generating plant shuts down. The plant is owned by FirstEnergy, an Akron, Ohio-based company that had experienced extensive recent maintenance problems.[specify] 2:02 p.m. The first of several 345 kV overhead transmission lines in northeast Ohio fails due to contact with a tree in Walton Hills, Ohio.41°21′22″N 81°34′10″W[16][17] 2:14 p.m. An alarm system fails at FirstEnergy's control room and is not repaired. 3:05 p.m. A 345 kV transmission line known as the Chamberlain-Harding line fails in Parma, south of Cleveland, due to a tree. 3:17 p.m. Voltage dips temporarily on the Ohio portion of the grid. Controllers take no action. 3:32 p.m. Power shifted by the first failure onto another 345 kV power line, the Hanna-Juniper interconnection, causes it to sag into a tree, bringing it offline as well. While MISO and FirstEnergy controllers concentrate on understanding the failures, they fail to inform system controllers in nearby states. 3:39 p.m. A FirstEnergy 138 kV line fails in northern Ohio.[18] 3:41 p.m. A circuit breaker connecting FirstEnergy's grid with that of American Electric Power is tripped as a 345 kV power line (Star-South Canton interconnection) and fifteen 138 kV lines fail in rapid succession in northern Ohio. 3:46 p.m. A fifth 345 kV line, the Tidd-Canton Central line, trips offline. 4:05:57 p.m. The Sammis-Star 345 kV line trips due to undervoltage and overcurrent interpreted as a short circuit. Later analysis suggests that the blackout could have been averted prior to this failure by cutting 1.5 GW of load in the Cleveland–Akron area. 4:06–4:08 p.m. A sustained power surge north toward Cleveland overloads three 138 kV lines. 4:09:02 p.m. Voltage sags deeply as Ohio draws 2 GW of power from Michigan, creating simultaneous undervoltage and overcurrent conditions as power attempts to flow in such a way as to rebalance the system's voltage. 4:10:34 p.m. Many transmission lines trip out, first in Michigan and then in Ohio, blocking the eastward flow of power around the south shore of Lake Erie from Toledo, Ohio, east through Erie, Pennsylvania and into the Buffalo, New York metropolitan area. Suddenly bereft of demand, generating stations go offline, creating a huge power deficit. In seconds, power surges in from the east, overloading east-coast power plants whose generators go offline as a protective measure, and the blackout is on. 4:10:37 p.m. The eastern and western Michigan power grids disconnect from each other. Two 345 kV lines in Michigan trip. A line that runs from Grand Ledge to Ann Arbor known as the Oneida-Majestic interconnection trips. A short time later, a line running from Bay City south to Flint in Consumers Energy's system known as the Hampton-Thetford line also trips. 4:10:38 p.m. Cleveland separates from the Pennsylvania grid. 4:10:39 p.m. 3.7 GW power flows from the east along the north shore of Lake Erie, through Ontario to southern Michigan and northern Ohio, a flow more than ten times greater than the condition 30 seconds earlier, causing a voltage drop across the system. 4:10:40 p.m. Flow flips to 2 GW eastward from Michigan through Ontario (a net reversal of 5.7 GW of power), then reverses back westward again within a half second. 4:10:43 p.m. International connections between the United States and Canada begin failing. 4:10:45 p.m. Northwestern Ontario separates from the east when the Wawa-Marathon 230 kV line north of Lake Superior disconnects. The first Ontario power plants go offline in response to the unstable voltage and current demand on the system. 4:10:46 p.m. New York separates from the New England grid. 4:10:50 p.m. Ontario separates from the western New York grid. 4:11:57 p.m. The Keith-Waterman, Bunce Creek-Scott 230 kV lines and the St. Clair-Lambton #1 230 kV line and #2 345 kV line between Michigan and Ontario fail. 4:12:03 p.m. Windsor, Ontario and surrounding areas drop off the grid. 4:12:58 p.m. Northern New Jersey separates its power-grids from New York and the Philadelphia area, causing a cascade of failing secondary generator plants along the Jersey coast and throughout the inland west. 4:13 p.m. End of cascading failure. 256 power plants are off-line, 85% of which went offline after the grid separations occurred, most due to the action of automatic protective controls. Link to comment Share on other sites More sharing options...
A-L-E-X Posted June 27, 2011 Share Posted June 27, 2011 and lol at everyone blaming each other During the first two hours of the event, various officials offered speculative explanations as to its root cause: Official reports from the office of Canadian Prime Minister Jean Chrétien stated that lightning had struck a power plant in northern New York, resulting in a cascading failure of the surrounding power grid and wide-area electric power transmission grid. However, power officials in the State of New York responded by stating that the problem did not originate in the United States, that there was no rain storm in the area where the lightning strike was supposed to have taken place, and that the power plant in question remained in operation throughout the blackout. Canadian Defence Minister John McCallum blamed an outage at a nuclear plant in Pennsylvania, but that state's authorities reported that all the plants were functioning normally. McCallum later stated that his sources had given him incorrect information. New York state Governor George Pataki blamed the power outage on Canada, stating "the New York independent systems operator says they are virtually certain it had nothing to do in New York state. And they believe it occurred west of Ontario, cascaded from there into Ontario, Canada, and through the northeast."[6] This was later proven to be false. CNN cited unnamed officials as saying that the Niagara-Mohawk power grid, which provides power for large portions of New York and parts of Canada, was overloaded. Between 4:10 and 4:13 p.m. EDT, 21 power stations throughout that grid shut down.[4] New Mexico governor Bill Richardson, who formerly headed the Department of Energy, in a live television interview 2 hours into the blackout characterized the United States as "a superpower with a third-world electricity grid." In Europe, this statement was published accompanied with comparisons highlighting the tighter, safer and better interconnected European electricity network (though it would suffer a similar blackout six weeks later). In the ensuing days, critics focused on the role of electricity market deregulation for the inadequate state of the electric power transmission grid, claiming that deregulation laws and electricity market mechanisms have failed to provide market participants with sufficient incentives to construct new transmission lines and maintain system security.[who?] Later that night, claims surfaced that the blackout may have started in Ohio up to one hour before the network shut down, a claim denied by Ohio's FirstEnergy utility.[citation needed] The president of the North American Electric Reliability Corporation said that the problem originated in Ohio.[7] By Saturday morning, investigators believed that the problem began with a sudden shift in the direction of power flow on the northern portion of the Lake Erie Transmission Loop, a system of transmission lines that circles Lake Erie on both U.S. and Canadian soil.[citation needed] Link to comment Share on other sites More sharing options...
winterwarlock Posted June 28, 2011 Share Posted June 28, 2011 memorable to me.... July 99...around 4th of July super hot and humid july 95? went over 100 violent storms that night lost power July 88 or 89? I think both years were hot but one really hot remember around 4th of July it being super hot I had a house for the week in seaside. Think it rained that Friday after violent t storms moved through on Thursday summer of 83 to me seemed quite hot all long summer 2010....wow just prolonged heat great stuff by again the dews were low Link to comment Share on other sites More sharing options...
NickD2011 Posted June 28, 2011 Share Posted June 28, 2011 July 5-8 2010 Just incredible heat that made it unbearable to step outside. I remember even at 9:30 at night it was over 90 degrees and it felt nice to step outside in the night. Then I went to Vegas and was spoiled by the heat there. Link to comment Share on other sites More sharing options...
SACRUS Posted June 29, 2011 Share Posted June 29, 2011 July 1993 (EWR) Dailies 7/7 103 78 7/8 105 82 7/9 104 83 7/10 105 84 7/11 99 80 7/12 97 80 7/13 98 79 7/14 90 75 7/15 91 72 7/16 91 68 Link to comment Share on other sites More sharing options...
Diego Posted June 29, 2011 Share Posted June 29, 2011 No, I'll admit I'm not. Im just a scientific hobbiest who, in addition to weather, has a lot of interest and knowledge in other scientific subjects. And who had spent the previous night in a Holiday Inn Express. Link to comment Share on other sites More sharing options...
HailMan06 Posted June 29, 2011 Share Posted June 29, 2011 And who had spent the previous night in a Holiday Inn Express. Link to comment Share on other sites More sharing options...
tamarack Posted June 29, 2011 Share Posted June 29, 2011 For me, "favorite heat wave" is an oxymoron. However, the most memorable was July 2-4, 1966, when NYC recorded 100/103/98. My workplace that summer, cooking burgers and dogs at Curtiss-Wright's lake resort in NNJ, was even hotter. A small dial thermometer at the opening between cooking area and clubhouse got way past the 120F top of its scale on that 103 day, perhaps to 150, and things were much hotter close to the gas griddles. Our practice was to toast the rolls on a tray under the griddle, but we had to quit because no matter how we adjusted the flame, the rolls went straight to black. The heat would crinkle one's arm hairs at 2-3 feet away from the griddle. We truly did not want to know how hot it was there. Link to comment Share on other sites More sharing options...
HeatMiser Posted June 29, 2011 Share Posted June 29, 2011 July 2011! Link to comment Share on other sites More sharing options...
A-L-E-X Posted June 29, 2011 Share Posted June 29, 2011 For me, "favorite heat wave" is an oxymoron. However, the most memorable was July 2-4, 1966, when NYC recorded 100/103/98. My workplace that summer, cooking burgers and dogs at Curtiss-Wright's lake resort in NNJ, was even hotter. A small dial thermometer at the opening between cooking area and clubhouse got way past the 120F top of its scale on that 103 day, perhaps to 150, and things were much hotter close to the gas griddles. Our practice was to toast the rolls on a tray under the griddle, but we had to quit because no matter how we adjusted the flame, the rolls went straight to black. The heat would crinkle one's arm hairs at 2-3 feet away from the griddle. We truly did not want to know how hot it was there. If I was alive that would have been my favorite too. I actually think JFK was hotter than NYC and hit 100+ three days in a row and one of those days it hit 104 there and 107 at LGA! Sort of like last summer when JFK topped 100 3 out of 4 days in early July while NYC only did it twice. Link to comment Share on other sites More sharing options...
Isotherm Posted June 29, 2011 Share Posted June 29, 2011 early july 99: had highs near/over 100 with mid - upper 70s dewpoints for 4 days. i remember the forecasts getting hotter and hotter as we approached it; my favorite kind of heat wave july 95: did not have the duration of july 99 or august 06, but dewpoints in the 80s at kewr made up for it august 06: our most recent impressive heat wave... also came off a hot july august 01: ewr hit 105, tying its all time record high july 2010: several days of 100 at kewr was impressive, but low dewpoints kind of tainted it My favorites have been more recent as I tend not to remember heat waves as well as winter events. 1) July 2010 - 4 days with high temps of 98F+ IMBY, very impressive. two of those 99F, and one 100F day. 2) August 2006 - big heat after a hot July as you said 3) June 2008 - huge anomalies for the first week of June, 3 days of 90s with one of those 96F. Overnight lows also warm; I recall walking outside one night around midngiht with temps of 83-84 degrees. Link to comment Share on other sites More sharing options...
uncle W Posted June 30, 2011 Share Posted June 30, 2011 here are the top heat waves for NYC... Longest heat waves 90+... days.....max.....dates 12...102...8/24-9/4 1953 11.....98...7/23-8/2 1999 10...102...7/7-7/16 1993 10.....98...8/4-8/13 1896 9.......98...8/11-8/19 2002 9.....104...7/13-7/21 1977 9.....101...7/6-7/14 1966 9.......94...7/5-7/13 1944 8.....102...8/10-8/17 1944 8.......97...7/29-8/5 2002 8.......98...8/2-8/9 1980 8.......98...8/28-9/4 1973 8.....100...6/26-7/3 1901 Hottest seven day period... high low mean max .. 98.0 76.9 87.4 102 7/07-7/13 1993 98.4 76.3 87.4 104 7/15-7/21 1977 98.3 76.0 87.1 102 8/29-9/04 1953 95.1 78.9 87.0 .98. 8/05-8/11 1896 95.3 78.0 86.7 .99. 8/09-8/15 1988 96.6 75.1 85.9 102 8/11-8/17 1944 96.1 75.2 85.7 100 8/01-8/07 1955 95.3 75.9 85.6 103 8/04-8/10 2001 94.9 76.1 85.5 102 7/16-7/22 1980 97.3 73.6 85.4 102 7/17-7/23 1991 95.7 75.1 85.4 .98. 8/28-9/03 1973 94.1 76.7 85.4 .96. 7/12-7/18 1981 94.3 76.4 85.4 103 7/04-7/10 2010 95.4 75.1 85.3 100 7/17-7/23 1955 the 1953 heat wave that lasted until 9/4 must have been brutal to live thru...The lack of AC made it worse...The late heat wave in 1973 was almost as bad but we had AC in most places by then...how would you deal with a heat wave like the one in Aug. 1896 with no fans or ac... Link to comment Share on other sites More sharing options...
A-L-E-X Posted June 30, 2011 Share Posted June 30, 2011 here are the top heat waves for NYC... Longest heat waves 90+... days.....max.....dates 12...102...8/24-9/4 1953 11.....98...7/23-8/2 1999 10...102...7/7-7/16 1993 10.....98...8/4-8/13 1896 9.......98...8/11-8/19 2002 9.....104...7/13-7/21 1977 9.....101...7/6-7/14 1966 9.......94...7/5-7/13 1944 8.....102...8/10-8/17 1944 8.......97...7/29-8/5 2002 8.......98...8/2-8/9 1980 8.......98...8/28-9/4 1973 8.....100...6/26-7/3 1901 Hottest seven day period... high low mean max .. 98.0 76.9 87.4 102 7/07-7/13 1993 98.4 76.3 87.4 104 7/15-7/21 1977 98.3 76.0 87.1 102 8/29-9/04 1953 95.1 78.9 87.0 .98. 8/05-8/11 1896 95.3 78.0 86.7 .99. 8/09-8/15 1988 96.6 75.1 85.9 102 8/11-8/17 1944 96.1 75.2 85.7 100 8/01-8/07 1955 95.3 75.9 85.6 103 8/04-8/10 2001 94.9 76.1 85.5 102 7/16-7/22 1980 97.3 73.6 85.4 102 7/17-7/23 1991 95.7 75.1 85.4 .98. 8/28-9/03 1973 94.1 76.7 85.4 .96. 7/12-7/18 1981 94.3 76.4 85.4 103 7/04-7/10 2010 95.4 75.1 85.3 100 7/17-7/23 1955 the 1953 heat wave that lasted until 9/4 must have been brutal to live thru...The lack of AC made it worse...The late heat wave in 1973 was almost as bad but we had AC in most places by then...how would you deal with a heat wave like the one in Aug. 1896 with no fans or ac... Interesting that the top heatwave is from late August thru early September-- that 102 was in September and the monthly record. It shows that summer is still in full force in early September-- like we found out last year Link to comment Share on other sites More sharing options...
SACRUS Posted June 30, 2011 Share Posted June 30, 2011 That 1993 heatwave was most impressive Link to comment Share on other sites More sharing options...
A-L-E-X Posted June 30, 2011 Share Posted June 30, 2011 That 1993 heatwave was most impressive I agree-- if you look at EWR numbers it's most astonishing-- 5 straight days of 100+ and two of those five days peaked at the station all time record high of 105! NYC had 3 and JFK 2 (peak of 102 and 101) They had nine 100+ days that summer! Link to comment Share on other sites More sharing options...
SACRUS Posted July 1, 2011 Share Posted July 1, 2011 I agree-- if you look at EWR numbers it's most astonishing-- 5 straight days of 100+ and two of those five days peaked at the station all time record high of 105! NYC had 3 and JFK 2 (peak of 102 and 101) They had nine 100+ days that summer! That was a nice period for heat 93,94 and just two years prior in 91 and 2 years later 95 was pretty warm too Link to comment Share on other sites More sharing options...
Analog96 Posted July 1, 2011 Share Posted July 1, 2011 I agree-- if you look at EWR numbers it's most astonishing-- 5 straight days of 100+ and two of those five days peaked at the station all time record high of 105! NYC had 3 and JFK 2 (peak of 102 and 101) They had nine 100+ days that summer! Those readings were completely bogus, too. Link to comment Share on other sites More sharing options...
A-L-E-X Posted July 1, 2011 Share Posted July 1, 2011 Those readings were completely bogus, too. Yeah EWR had a big heat bias back then which was corrected. Link to comment Share on other sites More sharing options...
Analog96 Posted July 1, 2011 Share Posted July 1, 2011 Yeah EWR had a big heat bias back then which was corrected. But somehow the records were allowed to stand. Link to comment Share on other sites More sharing options...
Guest Pamela Posted July 2, 2011 Share Posted July 2, 2011 August 1988...Newark field cracked 90 F every day for the first 17 days of the month... Link to comment Share on other sites More sharing options...
SACRUS Posted July 17, 2011 Share Posted July 17, 2011 August 2001, brief but intense heatwave Newark, NJ 8/6 97 8/7 100 8/8 101 8/9 105 8/10 99 Link to comment Share on other sites More sharing options...
SACRUS Posted July 17, 2011 Share Posted July 17, 2011 2006 Newark 7/27 93 7/28 94 7/29 93 7/30 93 7/31 94 8/1 100 8/2 100 8/3 101 8/4 91 8/5 92 Link to comment Share on other sites More sharing options...
bluewave Posted July 17, 2011 Share Posted July 17, 2011 My number one pick is 7/5/99.Getting to 100 degrees here in Long Beach with a dewpoint of 75 made it the hottest feeling day for me. JFK OBS form 7/5/99: 2:51 PM,100.0,75.0,45,29.87,10.0,NW,16.1,-,N/A,,Mostly Cloudy,310,1999-07-05 18:51:00 3:51 PM,102.0,73.9,41,29.86,10.0,West,16.1,20.7,N/A,,Mostly Cloudy,280,1999-07-05 19:51:00 Link to comment Share on other sites More sharing options...
forkyfork Posted August 1, 2011 Author Share Posted August 1, 2011 july 2011 Link to comment Share on other sites More sharing options...
SACRUS Posted August 1, 2011 Share Posted August 1, 2011 july 2011 still give the edge to several others 93. 2002,. The clouds last weekend spoiled it. even though we still passed 100. Link to comment Share on other sites More sharing options...
A-L-E-X Posted August 1, 2011 Share Posted August 1, 2011 My number one pick is 7/5/99.Getting to 100 degrees here in Long Beach with a dewpoint of 75 made it the hottest feeling day for me. JFK OBS form 7/5/99: 2:51 PM,100.0,75.0,45,29.87,10.0,NW,16.1,-,N/A,,Mostly Cloudy,310,1999-07-05 18:51:00 3:51 PM,102.0,73.9,41,29.86,10.0,West,16.1,20.7,N/A,,Mostly Cloudy,280,1999-07-05 19:51:00 Your record high of 102 is from that day! So is Islip's 102. Has it ever been 100+ all over long island, including Westhampton and Montauk? Link to comment Share on other sites More sharing options...
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