Dr. Jeff Masters' WunderBlog

World's deadliest weather disaster of 2010: Rio de Janeiro floods kill at least 183
Posted by: Dr. Jeff Masters, 5:06 PM GMT on April 09, 2010 +2
The world's deadliest and most expensive weather disaster so far this year hit Brazil this week, where at least 183 people are dead due to flooding and mudslides in the Rio de Janeiro region. Damage from the flooding has been estimated at 23.76 billion reais (US$13.3bn, €9.9bn), about 8% of the gross domestic product (GDP) of Rio de Janeiro State. Rio's heavy rains began near 5 pm local time (2000 UTC) on Monday April 5, and continued for 24 hours, with a total of 28.8 cm (11.5") of rain falling--more than the average rainfall for the entire month of April. It was the heaviest rainfall ever recorded in Brazil's 2nd largest city. The rains triggered devastating mudslides that roared through slums built on steep, unstable hillsides. According to the Associated Press, crews have pulled 17 bodies from the debris so far at at a new mudslide that hit in Niteroi, next to Rio, on April 7. Authorities fear an additional 150 people may have died there.


Figure 1. Flooding from this week's record rains in Rio de Janeiro. Image credit: Carolina Goncalves / Agência Brasil.


Figure 2. A mudslide in Niteroi, next to Rio de Janeiro, is feared to have killed 200 people. Image credit: Vitor Abdala / Agência Brasil.

The previous deadliest weather disaster this year was the snow avalanche in Afghanistan that killed 172 people on February 8 and 9.

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Jeff Masters
Categories: Flood
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Reader Comments
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151. indianrivguy 8:48 PM GMT on April 09, 2010    
conceise = conscious .. I think..

Alex, thanks for serving.. Go Navy, beat Army.. again!

A VLCC full of birthday candles eh.. cracked me up Oz

143 +
Member Since: September 23, 2006 Posts: 1 Comments: 1783
153. BahaHurican 8:48 PM GMT on April 09, 2010    
Nassau, Bahamas

Local Time: 4:15 PM EDT (GMT -04) Your time: 4:15 PM EDT (GMT -04)
Lat/Lon: 25.0° N 77.5° W (Google Map)

Current Conditions


Nassau, BS (Airport)
Updated: 46 min 42 sec ago
82 °F / 28 °C
Mostly Cloudy
Humidity: 70%
Dew Point: 72 °F / 22 °C
Wind: 5 mph / 7 km/h / 2.1 m/s from the SSE
Pressure: 30.04 in / 1017 hPa (Falling)
Heat Index: 87 °F / 31 °C
Visibility: 6.2 miles / 10.0 kilometers
UV: 5 out of 16
Clouds: Few 1800 ft / 548 m
Scattered Clouds 5000 ft / 1524 m
Mostly Cloudy 24000 ft / 7315 m
(Above Ground Level)
Elevation: 23 ft / 7 m



Hmmmm.... when the wind switches around to steady from the SSE, it's just one more sign that summer's on its way...
Member Since: October 25, 2005 Posts: 19 Comments: 17621
154. alexhurricane1991 8:48 PM GMT on April 09, 2010    
Storm i thought that the columbian heat low was permanent and stays there all year round.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
155. hydrus 8:49 PM GMT on April 09, 2010    
Quoting StormW:


No. Just a flareup in the ITCZ due to the divergent flow aloft. The NHC hadn't shown any waves analyzed on the current surface map...another thing you'll notice...the Colombian Heat Low is gone. Don't know if this is temporary or not.

If the heat low is not there during hurricane season, then what?
Member Since: September 27, 2007 Posts: 1 Comments: 14252
156. Greyelf 8:50 PM GMT on April 09, 2010    
RE: #96 and #125 -

Holy run on sentence Batman!

Seriously, Alexwhomever you are...there are 2 keys right next to "M" that you might want to consider making use of.
Member Since: June 5, 2007 Posts: 18 Comments: 838
157. Grothar 8:50 PM GMT on April 09, 2010    
I found a very intesting little website for amateurs on weather, eathquakes, etc; although it may even be interesting enough for some of the experts. Take a look at it, it is really very informative and quite good graphics. Not as good as xcool's, but really good. Enjoy

Link
Member Since: July 17, 2009 Posts: 56 Comments: 19517
159. alexhurricane1991 8:50 PM GMT on April 09, 2010    
Thanks indianrivguy i am very proud to be serving the red, white and blue.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
160. BahaHurican 8:52 PM GMT on April 09, 2010    
Quoting CycloneOz:


Carbon fiber construction, robust design, and ball bearings from hell!
The other qtn, of course, is why they haven't done that already.

I also remember seeing some comment about power outages being the reason why some stations stop reporting. But isn't it kinda... illogical... to make equipment designed to read severe wx dependent on external power sources?

Member Since: October 25, 2005 Posts: 19 Comments: 17621
161. alexhurricane1991 8:53 PM GMT on April 09, 2010    
Sorry greyelf i'm not that good with punctuation.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
163. BahaHurican 8:56 PM GMT on April 09, 2010    
Grey,

Unfortunately he's not the only one... I could call some names, but the list would take a while to compile.... lol
Member Since: October 25, 2005 Posts: 19 Comments: 17621
165. alexhurricane1991 8:57 PM GMT on April 09, 2010    
Okay storm that makes sense.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
168. seflagamma 9:00 PM GMT on April 09, 2010    
Thanks Baha,

You will probably start seeing a little more of me around this blog in the next few months.

will check back in later.

enjoy your Friday afternoon.
Member Since: August 29, 2005 Posts: 286 Comments: 40484
171. Grothar 9:03 PM GMT on April 09, 2010    
Quoting seflagamma:


then you are a rare exception! lol

Been doing great; busy with family and garden and the other blogs. I just "check in" here every now and then in "off season".

In a sick sort of way, after last year's "nothing" year, it is sort of exciting to be gearing up with what could be another 2004/2005/1995 LOL

But us weather geeks are sort of "sick" in that way. LOL


Hope the regulars come back, though. It may have been a slow season last year, but fun nonetheless. It is always nice to welcome the "newbies" they often have a lot to offer, but it is nice to chat with old friends, and I use the word "old" in the most complimentary manner. Really does look like it shaping up to be active in more ways than one.
Member Since: July 17, 2009 Posts: 56 Comments: 19517
175. hydrus 9:09 PM GMT on April 09, 2010    
Quoting StormW:


You noticed the lack of development in the Caribbean in 2009?

If that is not there, look for the opposite.
It might come back.
Member Since: September 27, 2007 Posts: 1 Comments: 14252
176. Patrap 9:12 PM GMT on April 09, 2010    
www.eumetsat.int


Welcome to EUMETSAT
Member Since: July 3, 2005 Posts: 370 Comments: 111297
177. alexhurricane1991 9:13 PM GMT on April 09, 2010    
Wow patrap i didnt think anyone would post this at the beginning of april.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
178. pottery 9:14 PM GMT on April 09, 2010    
BAH!!!
96F again, no rain, thick haze and smoke.
Who is in charge around here? (11n61w)
grumblegrumblegrumble
BBL
Member Since: October 24, 2005 Posts: 0 Comments: 20708
179. Patrap 9:15 PM GMT on April 09, 2010    
Member Since: July 3, 2005 Posts: 370 Comments: 111297
181. alexhurricane1991 9:17 PM GMT on April 09, 2010    
I'm sorry pottery maybe next week?
Member Since: April 8, 2010 Posts: 15 Comments: 2543
182. Patrap 9:19 PM GMT on April 09, 2010    
Member Since: July 3, 2005 Posts: 370 Comments: 111297
183. alexhurricane1991 9:22 PM GMT on April 09, 2010    
patrap thats alot of potential energy already not good hopefully we wont get any in there.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
185. alexhurricane1991 9:26 PM GMT on April 09, 2010    
Cycloneoz you think im him if you do you are sadly mistaken.
Member Since: April 8, 2010 Posts: 15 Comments: 2543
186. KEEPEROFTHEGATE (Mod) 9:27 PM GMT on April 09, 2010    
Member Since: July 15, 2006 Posts: 143 Comments: 40476
187. hydrus 9:27 PM GMT on April 09, 2010    
Quoting CycloneOz:
Sung to the tune of "Xanadu" by ELO & Olivia Newton John

A blog...of weather upon the sea
Of hurricanes that come to be
It's a necessity

But now
Refresh your screen to see
He's back and it's unreal
We're talkin' JFV

A thousand posts are flyin'
And there he is
A ban beatin' whiz
An everlasting pain
And you see with me
It's JFV

JFV. JFV
(we know you are here)
It's JFV
JFV, JFV,
(we know you are here)
It's JFV

JFV, your grammar and wording will shine
For you, JFV
Xanadu? Ralph, puke, vomit, etc....your words are better. But Olivia is still very hot..Saw her on the Today show.
Member Since: September 27, 2007 Posts: 1 Comments: 14252
188. hydrus 9:31 PM GMT on April 09, 2010    
Quoting StormW:


Let's hope. If you remember, most of the season last year we saw the yellow and greens near South America in the Caribbean...pretty brisk easterlies...follow this:

ECMWF
I see no(L) senor. Iz mui bueno. Verde nada.
Member Since: September 27, 2007 Posts: 1 Comments: 14252
189. BahaHurican 9:44 PM GMT on April 09, 2010    
Quoting CycloneOz:


The only reason I can think of that we do not yet have weather instruments that can withstand extreme conditions is that the market is too small.

Inexpensive plastic devices work fine for "normal" weather. Unfortunately (I guess,) the Earth is a wonderful planet that features day after day of "normal weather."

If our weather was extreme all the time, we would've designed and put to market super-WX stations that could withstand the extremes.

Good weather = inexpensively made WX stations.

Capitalism IS BOSS!
Good points, I agree. But it doesn't solve our problem of insufficent data, does it?

Maybe a "dataset" worth of the more expensive, sturdier instruments could be set up in the potential path of a landfalling hurricane? Sort of like an earthbound dropsonde.... that would be a compromise of sorts.
Member Since: October 25, 2005 Posts: 19 Comments: 17621
190. KEEPEROFTHEGATE (Mod) 9:46 PM GMT on April 09, 2010    
Link

link above is to my blog i have updated the tropical section check it out leave some comments as to what you would like added if anything
Member Since: July 15, 2006 Posts: 143 Comments: 40476
191. alexhurricane1991 10:03 PM GMT on April 09, 2010    
Aright guys i have to go but i will be back after dinner see ya and it was good meeting all of you!
Member Since: April 8, 2010 Posts: 15 Comments: 2543
194. Skyepony (Mod) 10:21 PM GMT on April 09, 2010    
Baha~ I think one problem of the portable PWS that you can leave in a storm is one step closer to being solved... At least for real time weather observations. That little WeatherPlug I've been testing is working out great. It's become available to the public today. It uses 5 watts & total replaces the personal computer needed to upload. One of those, a battery pack, internet & the sturdiest PWS you can find (the real expense) would be the best bet at the moment.

With this configuration & my Tycon which has everything on one stick..next time I've got to hunker at hurricane house..I'm probably taking the whole thing over there & putting it up. Unlike here, there is a battery pack & alot less trees to destroy it with..
Member Since: August 10, 2005 Posts: 144 Comments: 29283
196. sailingallover 10:27 PM GMT on April 09, 2010    
The weather here around the Caribbean is just wierd right now.. the Columbina low has been weak all winter, we didn't get our usual NE trades so SST's are still REALLY high and we have mid-summer like moisture over the windwards.. if it were not for the shear from strong upper level easterlies I wouldn't be surprised with at a storm already...this season looks scary..all the boaters here are planning to head north..even ones that have been here for over a decade..
Member Since: September 1, 2009 Posts: 23 Comments: 982
197. SevereHurricane 10:34 PM GMT on April 09, 2010    
Quoting sailingallover:
The weather here around the Caribbean is just wierd right now.. the Columbina low has been weak all winter, we didn't get our usual NE trades so SST's are still REALLY high and we have mid-summer like moisture over the windwards.. if it were not for the shear from strong upper level easterlies I wouldn't be surprised with at a storm already...this season looks scary..all the boaters here are planning to head north..even ones that have been here for over a decade..


Yeah... Thats pretty spoooky. Has there ever been a winter with similar conditions?
Member Since: September 7, 2008 Posts: 17 Comments: 1604
198. Levi32 10:35 PM GMT on April 09, 2010    
Afternoon all.

Storm, you have WU Mail. I apologize for how much I rambled.....didn't mean to when I started lol.
Member Since: November 24, 2005 Posts: 586 Comments: 25444
199. SevereHurricane 10:38 PM GMT on April 09, 2010    
Quoting Levi32:
Afternoon all.

Storm, you have WU Mail. I apologize for how much I rambled.....didn't mean to when I started lol.


Good to see you, Levi!
Member Since: September 7, 2008 Posts: 17 Comments: 1604
200. SevereHurricane 10:40 PM GMT on April 09, 2010    
So whats the deal with the NOAA AOML site? They haven't updated the SST map in about 4 days.
Member Since: September 7, 2008 Posts: 17 Comments: 1604
201. Levi32 10:40 PM GMT on April 09, 2010    
Quoting SevereHurricane:


Good to see you, Levi!


You too, SH :)
Member Since: November 24, 2005 Posts: 586 Comments: 25444

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About JeffMasters
Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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