danstorm Posted August 13, 2014 Share Posted August 13, 2014 I wonder where the 9.71" ranks for 2 hour rainfall totals. Wouldn't be at all surprised if it was the most on record in our region. Bump ... still shocked by this 2 hr. total. Link to comment Share on other sites More sharing options...
WE GOT HIM Posted August 13, 2014 Share Posted August 13, 2014 http://newyork.cbslocal.com/2014/08/13/flash-flood-watches-warnings-in-effect-as-heavy-rain-drenches-parts-of-tri-state/ Link to comment Share on other sites More sharing options...
doncat Posted August 13, 2014 Share Posted August 13, 2014 Bump ... still shocked by this 2 hr. total. Yeah to receive that much in 2 hr. is amazing... had 9" here in 22 hours back in Aug. 2011 but to get that in 2 hrs... wow. Link to comment Share on other sites More sharing options...
WE GOT HIM Posted August 13, 2014 Share Posted August 13, 2014 Yeah to receive that much in 2 hr. is amazing... had 9" here in 22 hours back in Aug. 2011 but to get that in 2 hrs... wow. Yea I think I got 6-7" in 2 hour then, I thought that was crazy but 15...wow Link to comment Share on other sites More sharing options...
Weathergun Posted August 13, 2014 Share Posted August 13, 2014 We've been discussing it for several pages ... it's one of the most impressive weather stats I've seen in all my time living in the Tri State. Same here. I don't recall anything heavier in two hours in our area. Link to comment Share on other sites More sharing options...
bluewave Posted August 13, 2014 Share Posted August 13, 2014 Even more impressive was the short duration. Storms like Floyd, Irene and the noreasters in 2007/2010 all dumped these amounts in 12-24 hours not under 6 The 8-12-00 flood event in NW NJ was rated a 1000 year rainfall for dumping a doppler estimated 15 inches in 6 hours. http://pubs.usgs.gov/wri/2002/4099/report.pdf Link to comment Share on other sites More sharing options...
Sophisticated Skeptic Posted August 13, 2014 Share Posted August 13, 2014 The world record for rain in one hour is 13.8". seems impossible. If it didn't happen in the U.S. , i'd find it hard to believe. did it ? EDIT: nevermind, find one close enough http://wmo.asu.edu/world-greatest-sixty-minute-one-hour-rainfall 12 inches an hour in MO. and the 24 hour record = 71.8" http://wmo.asu.edu/world-greatest-twenty-four-hour-1-day-rainfall But this was at over 9,000 feet. Link to comment Share on other sites More sharing options...
Eduardo Posted August 13, 2014 Share Posted August 13, 2014 Took me four and a half hours to get from my house in Lindenhurst to my job in Islip. Normally takes 20-30 mins. Absolutely unreal! Sunrise Highway was full of water, mud, and abandoned vehicles. Never seen anything like this! That rate from KISP is just incredible and the real-world consequences of it are easily seen! Link to comment Share on other sites More sharing options...
WE GOT HIM Posted August 13, 2014 Share Posted August 13, 2014 seems impossible. If it didn't happen in the U.S. , i'd find it hard to believe. did it ? EDIT: nevermind, find one close enough http://wmo.asu.edu/world-greatest-sixty-minute-one-hour-rainfall 12 inches an hour in MO. and the 24 hour record = 71.8" http://wmo.asu.edu/world-greatest-twenty-four-hour-1-day-rainfall But this was at over 9,000 feet. Link to comment Share on other sites More sharing options...
IsentropicLift Posted August 13, 2014 Share Posted August 13, 2014 15" of rain over 2 days would have devastated my town, let alone that much in a few hours. Link to comment Share on other sites More sharing options...
Chaser25973 Posted August 13, 2014 Share Posted August 13, 2014 seems impossible. If it didn't happen in the U.S. , i'd find it hard to believe. did it ? EDIT: nevermind, find one close enough http://wmo.asu.edu/world-greatest-sixty-minute-one-hour-rainfall 12 inches an hour in MO. and the 24 hour record = 71.8" http://wmo.asu.edu/world-greatest-twenty-four-hour-1-day-rainfall But this was at over 9,000 feet. A old and mistaken value of a 24 hr. rainfall of 1.870 m (73.62’’) at Cilaos, La Reunion, on 15-16 March 1952 (cited by J.L.H. Paulhus [indian Ocean and Taiwan Rainfalls Set New Records, Monthly Weather Review, 93 (5), 1965, pp. 331-335], is sometimes quoted. However, Reunion meteorologists state that Cilaos value is "an old mistake." They do confirm that this figure is invalid and that the accurate 24h rainfall extreme is 1.825 mm recorded at Foc-Foc during tropical cyclone Denise in 1966. Link to comment Share on other sites More sharing options...
jm1220 Posted August 13, 2014 Share Posted August 13, 2014 Same here. I don't recall anything heavier in two hours in our area. It rained 3-4" per hour during the August 2011 rain event at home and it literally was almost blinding intensity. That caused as much or more damage to my town than Irene did a week later. Once you get to that point and it lasts more than 20 minutes, the damage becomes very real, even in places far from rivers. Link to comment Share on other sites More sharing options...
forkyfork Posted August 13, 2014 Share Posted August 13, 2014 The catskills didn't actually get much from this storm I'm near liberty ny at 1,550 ft and measured .65 in from the whole storm. The western catskills usually do very well with upslope southeast winds but not this time.the convective system that drenched the mid atlantic/long island robbed areas to the NW. they are difficult to forecast Link to comment Share on other sites More sharing options...
WE GOT HIM Posted August 13, 2014 Share Posted August 13, 2014 It rained 3-4" per hour during the August 2011 rain event at home and it literally was almost blinding intensity. That caused as much or more damage to my town than Irene did a week later. Once you get to that point and it lasts more than 20 minutes, the damage becomes very real, even in places far from rivers. That event was insane. I think I hit a 37" rain rate at one point on the Davis. Link to comment Share on other sites More sharing options...
tmagan Posted August 13, 2014 Share Posted August 13, 2014 KISP will add to their rain totals, albeit not by much. Link to comment Share on other sites More sharing options...
patrick05 Posted August 13, 2014 Share Posted August 13, 2014 Parts of Sunrise Highway were still flooded this afternoon as I drove by, especially after exit 44. This one's under the Islip Ave (Route 111) overpass; must've been some serious flooding if they're still pumping at this hour: Link to comment Share on other sites More sharing options...
TWCCraig Posted August 13, 2014 Share Posted August 13, 2014 Just added 0.24". May add a little more. Total since midnight up to 11.61". Link to comment Share on other sites More sharing options...
TWCCraig Posted August 13, 2014 Share Posted August 13, 2014 Parts of Sunrise Highway were still flooded this afternoon as I drove by, especially after exit 44. This one's under the Islip Ave (Route 111) overpass; must've been some serious flooding if they're still pumping at this hour: Wow still bad there huh. I'm not far from there. Link to comment Share on other sites More sharing options...
patrick05 Posted August 13, 2014 Share Posted August 13, 2014 Wow still bad there huh. I'm not far from there. Yeah, especially if you only have one truck doing the rounds lol (may have been more at one point). You can see the waterline on the bridge post on my second pic. Must've been 5 feet in the morning at least. Link to comment Share on other sites More sharing options...
jm1220 Posted August 14, 2014 Share Posted August 14, 2014 Parts of Sunrise Highway were still flooded this afternoon as I drove by, especially after exit 44. This one's under the Islip Ave (Route 111) overpass; must've been some serious flooding if they're still pumping at this hour: Wow, I'm glad we missed the worst of this one, although 4-5" of rain is nothing to sneeze at either. Link to comment Share on other sites More sharing options...
donsutherland1 Posted August 14, 2014 Share Posted August 14, 2014 Some photos from early this evening: Link to comment Share on other sites More sharing options...
Rjay Posted August 14, 2014 Share Posted August 14, 2014 Using Islip as a reference point look at pages 28, 35, and 56. 100 year 2 hr rainfall, 100 year 3 hr rainfall and 100 year 24 hr rainfall. Probably a 1 in 1000 year event. http://www.nws.noaa.gov/oh/hdsc/PF_documents/TechnicalPaper_No40.pdf Link to comment Share on other sites More sharing options...
NorthShoreWx Posted August 14, 2014 Share Posted August 14, 2014 Holy carp; it's pouring again (11:39). We also picked up another third of an inch from the TS earlier this evening. Link to comment Share on other sites More sharing options...
snywx Posted August 14, 2014 Share Posted August 14, 2014 Less than 0.25" at home in the screw zone. Glad to be in Florida and not missing an epic rainer. 0.06" here lol... Link to comment Share on other sites More sharing options...
Morris Posted August 14, 2014 Share Posted August 14, 2014 Beautiful morning weather! Link to comment Share on other sites More sharing options...
SnowDemon Posted August 14, 2014 Share Posted August 14, 2014 Cool (dare I say chilly?) start to the morning. Link to comment Share on other sites More sharing options...
ag3 Posted August 14, 2014 Share Posted August 14, 2014 Euro and it's ensembles have been persistent with a large rainmaker for the middle of next week. Last night's runs showed it again. Winter like system with a closed H5 low. Timing is Tuesday night into Wednesday right now. Setup wise, it looks much more widespread then yesterday's isolated downpour. Link to comment Share on other sites More sharing options...
MJO812 Posted August 14, 2014 Share Posted August 14, 2014 67 here. Loving it. Link to comment Share on other sites More sharing options...
Allsnow Posted August 14, 2014 Share Posted August 14, 2014 Started today cutting at 7am...had shorts and a t-shirt on...it was def a bit chilly until the sun came up Link to comment Share on other sites More sharing options...
jm1220 Posted August 14, 2014 Share Posted August 14, 2014 Feels like October outside. Actually seems chilly. Link to comment Share on other sites More sharing options...
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