Heaviest rains in Colombia's history trigger deadly landslide; 145 dead or missing

By: Dr. Jeff Masters , 9:07 PM GMT on December 06, 2010

Share this Blog
3
+

Colombia's heaviest rains in history triggered a landslide in the poor hillside community of Bello on Sunday, killing at least 20 people and leaving 125 missing. This year's unprecedented rainy season had already killed 176 people prior to Sunday, making it one of the deadliest flooding years in Colombia's history, according to the director of Colombia's national disaster management office, Luz Armanda Pulido. In 2009, 110 people died in flooding disasters, and 48 were killed in 2008, according to Colombian Red Cross director of national relief operations Carlos Ivan Marquez. This year's rains are the heaviest in the 42 years since Colombia's weather service was created and began taking data, agency director Ricardo Lozano said. The resulting flooding has destroyed or damaged the homes of 1.6 million people. Colombia's president Juan Manuel Santos said the number of homeless from the flooding could reach 2 million, and said "the tragedy the country is going through has no precedents in our history." Neighboring Venezuela has also been hard-hit by this year's severe rainy season--at least 30 people are dead from floods and mudslides, and tens of thousands homeless. More rain is in the forecast--the latest forecast from the GFS model (Figure 2)--calls for an additional 4 - 6 inches (100 - 150 mm) across much of western and northern Colombia in the coming week.


Figure 1. Satellite-observed rainfall over Colombia during the past two weeks shows a region of 100 - 200 mm (4 - 8 inches) has fallen near Medellin, close to where Sunday's landslide in Bello occurred. Image credit: Navy Research Lab, Monterey.

Colombia's rainy season usually peaks in October, then gradually wanes in November and December. The heavy rains are due to the presence of the Intertropical Convergence Zone, the area encircling the earth near the Equator where winds originating in the northern and southern hemispheres come together. When these great wind belts come together (or "converge", thus the name "Convergence Zone"), the converging air is forced upwards, since it has nowhere else to go. The rising air fuels strong thunderstorm updrafts, creating a band of very heavy storms capable of causing heavy flooding rains. This year is a La Niña year, which means there is a large region of colder than average water off the Pacific coast of Colombia. Colder than average water off the Pacific coast enhances rainfall over Colombia, and this year's La Niña, which is at the borderline between the "moderate" and "strong" categories, is largely to blame for Colombia's deadly rainy season.


Figure 2. Rainfall forecast from today's run of the GFS model predicts that region to the north and west of Bogota, Colombia may see another 100 - 150 mm (4 - 6 inches) during the coming week (red colors.) Image credit: NOAA/CPC.

See also my November 22 post, Colombia rainy season floods kill 136.

I'll have a new post on Wednesday.

Jeff Masters

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

or Join

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 264 - 214

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15Blog Index

264. eddye
so south fla going 2 get colder then this cold front we have know
Member Since: Posts: Comments:
Quoting IKE:


I'll downcast again when the tropics start back up:)


Look forward to it. Hope you have great holiday season Ike. I probably won't be checking in too much due to AGW talk.
Member Since: Posts: Comments:
262. IKE
Quoting BobinTampa:


coldcaster


I'll downcast again when the tropics start back up:)
Member Since: Posts: Comments:
Quoting IKE:
12Z GFS @ 168 hours...could be record cold in the SE USA....impressive....



coldcaster
Member Since: Posts: Comments:
260. IKE
12Z GFS @ 168 hours...could be record cold in the SE USA....impressive....

Member Since: Posts: Comments:
Quoting Jax82:
Jax, FL...BRRR


I'm amazed those lows are so different from other sources; TWC calls for lows for the same days of, respectively, 29, 34, 42, 46, and 55, while the NWS says 29, 32, 39, 47, and 51.
Member Since: November 8, 2009 Posts: 4 Comments: 13461
258. Jax82
Jax, FL...BRRR

Member Since: Posts: Comments:
#243 - Hello greentortuloni - if you are still around.

headache, fatigue, nausea, and a big RED rash could also be a sign of Lyme disease. If you have been in an area with Deer ticks - I would mention this to your doc! Catch it early - or it can turn into a nightmare!

Robyn
Member Since: Posts: Comments:
256. DDR
We can't seem to catch a break
This may be the 4th flood event in 2 weeks
Thank you La nina,geeze...
Member Since: Posts: Comments:
255. DDR
Good morning
Very Heavy rains in association with the itcz are lashing eastern areas of Trinidad again.
Radar..Link
Member Since: Posts: Comments:
Grand Targhee: Snow for this season to date, 149"

Mountain Forecast
Tuesday
Slight Chance Snow
28F / 16F
Wednesday
Snow Likely
30F / 23F
Thursday
Snow Likely
28F / 20F
Friday
Snow Likely
27F / 14F
Saturday
Chance Snow
22F / 15F
To view a Detailed Weather Forecast, visit The National Weather Service.

For our Regional Avalanche Forecast, visit The Bridger-Teton Avalanche Center.

For our Snowpack & Climate Station, visit our NRCS SNOTEL Station.


Member Since: Posts: Comments:
Quoting PensacolaDoug:


I'm going to Keystone in February!


Cool, hope you have fun!
Member Since: October 8, 2008 Posts: 14 Comments: 4553
Quoting PensacolaDoug:


I'm going to Keystone in February!
I predict Keystone will have lots of snow in February.:)
Member Since: Posts: Comments:
Quoting caneswatch:


Time to break out the long johns. I guess I need them before the snowboarding trip to Colorado in March.


I'm going to Keystone in February!
Member Since: Posts: Comments:
Quoting hcubed:
Since people are concerned about the legacy we leave, and the type of world we leave for our children, comment on this:

According to the census (2010), there are 32,203,228 households with children under 18 (out of 77,894,830 total).

Let's say that each of these households live in a house that has, conservatevely, 15 incandescent bulbs.

Let's convert them all to CFL's.

We're talking about 483,048,420 CFL's, with a lifespan of 5 years (est).

Each CFL contains about 4mg of mercury (.004g).

Thats a total of 1,932,193.68g (or 4259.757 POUNDS) of mercury being thrown out. Every 5 years.

Just for the US. Just for households w/ children under 18.

It's estimated that India alone goes through 640 million bulbs per year. Changing to CFL's means less energy usage, and less CO2, but then there would be 2,560,000g (5643lbs) of mercury floating around.

Now THAT'S a legacy to leave for your children and grandchildren.

But hey, less CO2 in the air is a good thing, right?


Compared to the 38 tons of mercury emitted by coal burning power plants anually.

Link
Member Since: Posts: Comments:
Quoting hcubed:
Since people are concerned about the legacy we leave, and the type of world we leave for our children, comment on this:

According to the census (2010), there are 32,203,228 households with children under 18 (out of 77,894,830 total).

Let's say that each of these households live in a house that has, conservatevely, 15 incandescent bulbs.

Let's convert them all to CFL's.

We're talking about 483,048,420 CFL's, with a lifespan of 5 years (est).

Each CFL contains about 4mg of mercury (.004g).

Thats a total of 1,932,193.68g (or 4259.757 POUNDS) of mercury being thrown out. Every 5 years.

Just for the US. Just for households w/ children under 18.

It's estimated that India alone goes through 640 million bulbs per year. Changing to CFL's means less energy usage, and less CO2, but then there would be 2,560,000g (5643lbs) of mercury floating around.

Now THAT'S a legacy to leave for your children and grandchildren.

But hey, less CO2 in the air is a good thing, right?


Which is why I'd like to see CFLs dropped in favor of LEDs. More energy efficient and no mercury to dispose of...
Member Since: Posts: Comments:
Quoting GeoffreyWPB:
From the Miami NWS Discussion:

...BEFORE ANOTHER STRONG COLD FRONT APPROACHES SOUTH
FLORIDA LATE SUNDAY...PERHAPS BRINGING A FEW SHOWERS. ANOTHER
VERY COLD AIR MASS WILL THEN AFFECT THE REGION EARLY NEXT
WEEK...WITH TEMPERATURES POTENTIALLY EVEN COLDER THAN THOSE SEEN
WITH THE PRESENT AIR MASS.


Time to break out the long johns. I guess I need them before the snowboarding trip to Colorado in March.
Member Since: October 8, 2008 Posts: 14 Comments: 4553
For West Palm Beach

Member Since: September 10, 2007 Posts: 0 Comments: 10986
Little windy in Toronto.

"
Member Since: Posts: Comments:
Dew point was below freezing.

Quoting mara0921:
I can report this morning at 7AM it was 36 degrees in Oakland Park, FL, but the real shocker was all the cars were covered in frost as was the grass. How come there was ice if it didnt get down to 32 degrees?
Member Since: Posts: Comments:
Quoting hcubed:
Since people are concerned about the legacy we leave, and the type of world we leave for our children, comment on this:

According to the census (2010), there are 32,203,228 households with children under 18 (out of 77,894,830 total).

Let's say that each of these households live in a house that has, conservatevely, 15 incandescent bulbs.

Let's convert them all to CFL's.

We're talking about 483,048,420 CFL's, with a lifespan of 5 years (est).

Each CFL contains about 4mg of mercury (.004g).

Thats a total of 1,932,193.68g (or 4259.757 POUNDS) of mercury being thrown out. Every 5 years.

Just for the US. Just for households w/ children under 18.

It's estimated that India alone goes through 640 million bulbs per year. Changing to CFL's means less energy usage, and less CO2, but then there would be 2,560,000g (5643lbs) of mercury floating around.

Now THAT'S a legacy to leave for your children and grandchildren.

But hey, less CO2 in the air is a good thing, right?


Good point. New technologies like thermometers, thermostats and other devices with toxic chemicals need to be disposed of properly. Green technology has to be measured for disposal costs as well.

Anyway, I am off to the doctor's. Headache, tiredness, nausea... just a hangover from gluvine, I guess. Big red rash... scares me a bit in the middle of measles outbreak here, not a hangover symptom.
Member Since: Posts: Comments:
Quoting surferjoe5899:
Coral Springs, FL
They claim it was 37 this morning yet there was ice on the top deck (bed cover) of my truck. No ice on the ground or the windshield, just my topdeck. Can anyone explain that?

Here in West Boca Raton, I had ice all over my windshield and sunroof!
Member Since: Posts: Comments:
Member Since: September 10, 2007 Posts: 0 Comments: 10986
Since people are concerned about the legacy we leave, and the type of world we leave for our children, comment on this:

According to the census (2010), there are 32,203,228 households with children under 18 (out of 77,894,830 total).

Let's say that each of these households live in a house that has, conservatevely, 15 incandescent bulbs.

Let's convert them all to CFL's.

We're talking about 483,048,420 CFL's, with a lifespan of 5 years (est).

Each CFL contains about 4mg of mercury (.004g).

Thats a total of 1,932,193.68g (or 4259.757 POUNDS) of mercury being thrown out. Every 5 years.

Just for the US. Just for households w/ children under 18.

It's estimated that India alone goes through 640 million bulbs per year. Changing to CFL's means less energy usage, and less CO2, but then there would be 2,560,000g (5643lbs) of mercury floating around.

Now THAT'S a legacy to leave for your children and grandchildren.

But hey, less CO2 in the air is a good thing, right?
Member Since: Posts: Comments:
Quoting surferjoe5899:
Coral Springs, FL
They claim it was 37 this morning yet there was ice on the top deck (bed cover) of my truck. No ice on the ground or the windshield, just my topdeck. Can anyone explain that?
More than likely it was due to the thickness of the bed cover.

Being thinner means that it contains less mass and thus is cooled more easily than the thicker windshield or the ground which had not been given the time to cool before the cold weather arrived.

If there were a long period of cold weather, the ground would have a chance to cool dramatically and the formation of frost would occur readily.

BTW Evaporation plays a significant part in the formation of frost; but, that is for a more detailed explanation.


Member Since: Posts: Comments:
Quoting hurricaneben:


Whoa whoa quit the religion talk and get on with weather. This is not a Bible forum, I hope I make myself clear.

I'm afraid you didn't; where in the statement you quoted did you see anything about the Bible or religion? And if you're referring to the small handful of earlier posts that mentioned either subject, well, that's because the conversation at that time was revolving around whether religion plays a role in some of the anti-AGW rhetoric; it would have been a bit tricky to discuss religion without actually mentioning religion. ;-)
Member Since: November 8, 2009 Posts: 4 Comments: 13461
Quoting Neapolitan:

At any rate, if you knew me, you'd realize right out of the gate that I have no superiority complex. ;-) But I made a vow to no longer sit silently while the anti-truthers became more vocal and more vehement, and I intend to uphold that promise.

Yuup...

No doubt about it.

Your mantra is...

If the AGW scientists say it, I believe them and there is no more to say about the subject.

So sad that educators have failed us so miserably.


Member Since: Posts: Comments:
Coral Springs, FL
They claim it was 37 this morning yet there was ice on the top deck (bed cover) of my truck. No ice on the ground or the windshield, just my topdeck. Can anyone explain that?
Member Since: Posts: Comments:
Complete Update





Member Since: Posts: Comments:
Quoting Neapolitan:

Any insinuation was purely yours, Doug. I only responded to your statement that the numbers of those who believe in the theory of AGW are shrinking by saying that the numbers are less important than their composition.

At any rate, if you knew me, you'd realize right out of the gate that I have no superiority complex. ;-) But I made a vow to no longer sit silently while the anti-truthers became more vocal and more vehement, and I intend to uphold that promise.


Whoa whoa quit the religion talk and get on with weather. This is not a Bible forum, I hope I make myself clear.
Member Since: Posts: Comments:
storm watch within 36 hrs
Member Since: Posts: Comments:
Member Since: Posts: Comments:
Member Since: Posts: Comments:
I can report this morning at 7AM it was 36 degrees in Oakland Park, FL, but the real shocker was all the cars were covered in frost as was the grass. How come there was ice if it didnt get down to 32 degrees?
Member Since: Posts: Comments:
hey good morning guys I am here at work on the nice cool morning just did one of our upper air soundings
Member Since: Posts: Comments:
Something for us "old Dudes" to start the morning with...Enjoy
Link
Member Since: Posts: Comments:
226. IKE
My low was 28.9. Surrounded by 2 lakes.
Member Since: Posts: Comments:
From Facebook:

WPTV Storm Team 5
Can you believe it's the same temperature in Juno Beach, Fl. and Juneau, Alaska?
Member Since: September 10, 2007 Posts: 0 Comments: 10986
Quoting IKE:


This one may be a classic noreaster with snow down into southern Alabama....if the GFS verifies there may be upper teens into the Florida panhandle.

Good news...after this shot the pattern may change/warmer temps.


This time I will try(if it happens) and get a photo posted on here for those who don't believe we get snow(very rarely) here in p'cola..LOL
Member Since: Posts: Comments:

Morning Everyone, Not as cold as it couldve have been. Got lucky the wind stayed up last night.
Member Since: Posts: Comments:
222. IKE
Quoting GeoffreyWPB:
From the Miami NWS Discussion:

...BEFORE ANOTHER STRONG COLD FRONT APPROACHES SOUTH
FLORIDA LATE SUNDAY...PERHAPS BRINGING A FEW SHOWERS. ANOTHER
VERY COLD AIR MASS WILL THEN AFFECT THE REGION EARLY NEXT
WEEK...WITH TEMPERATURES POTENTIALLY EVEN COLDER THAN THOSE SEEN
WITH THE PRESENT AIR MASS.


This one may be a classic noreaster with snow down into southern Alabama....if the GFS verifies there may be upper teens into the Florida panhandle.

Good news...after this shot the pattern may change/warmer temps.
Member Since: Posts: Comments:
From the Miami NWS Discussion:

...BEFORE ANOTHER STRONG COLD FRONT APPROACHES SOUTH
FLORIDA LATE SUNDAY...PERHAPS BRINGING A FEW SHOWERS. ANOTHER
VERY COLD AIR MASS WILL THEN AFFECT THE REGION EARLY NEXT
WEEK...WITH TEMPERATURES POTENTIALLY EVEN COLDER THAN THOSE SEEN
WITH THE PRESENT AIR MASS.
Member Since: September 10, 2007 Posts: 0 Comments: 10986
More facts on Global Warming

Link
Member Since: Posts: Comments:
Nea, any link is purely in the minds of the linkers, not in the actual "theory", if I may use that word. The concept behind Creationism is that the world was created by God for man, not to ABUSE, but to husband, that is, protect and preserve. AGW denialists take a more fatalistic approach - man's actions don't, or even can't, impact the function of the earth. I agree with the earlier posters that Christianity would at least theoretically be aligned with the preservationists rather than the denialists.... however, go figure....

Member Since: Posts: Comments:
Good morning all.... just realized I posted this on the old blog.... lol

Quoting BahaHurican:
Morning all. Just checked my thermometer outside got a reading of 56 degrees F at around 5:20 a.m. It actually feels a little warmer out there than it did when I originally checked around 4 a.m.....

At any rate, it's pretty chilly for Nassau on 7 December...


Right now it's still about 56 per the same thermometer, and very still - no wind. I shall not much enjoy going out there in a few minutes, but I need to get to work... lol Depending on how hectic things are, I may try to check in today...

Anyway, ya'll have a good one, with lots of comfortable temps and warm drinks for the chilly areas...
Member Since: Posts: Comments:
217. IKE
Quoting pcola57:
Just a note to you IKE..I'm handicapped and living here in W.p'cola taking care of my ailing mom..I am so relying on you and the other quality mets for the real info...so i'm sending you out a thanks for all you do...ps..would have rather had WU mailed this info but i haven't master it ...yet...
v/r
Moe


Thanks. I'm no met. Just a weather follower.....

Crestview,FL. for tomorrow....

Wednesday
Mostly cloudy. Slight chance of flurries in the morning. Highs in the lower 50s. North winds around 5 mph.


Crestview now....

Crestview, Florida (Airport)
Updated: 56 min 14 sec ago
24 °F
Clear
Windchill: 20 °F
Humidity: 79%
Dew Point: 18 °F
Wind: 4 mph from the NNW

Pressure: 30.23 in (Rising)
Visibility: 10.0 miles
UV: 0 out of 16
Pollen: 2.60 out of 12
Pollen Forecast new!
Clouds: Clear -
(Above Ground Level)
Elevation: 190 ft

Member Since: Posts: Comments:
Just a note to you IKE..I'm handicapped and living here in W.p'cola taking care of my ailing mom..I am so relying on you and the other quality mets for the real info...so i'm sending you out a thanks for all you do...ps..would have rather had WU mailed this info but i haven't master it ...yet...
v/r
Moe
Member Since: Posts: Comments:
215. IKE
Quoting pcola57:

Didn't see that one coming..ouch!..thanks IKE


Even colder temps behind this one then what we have now....6Z GFS @ 144 hours....

Member Since: Posts: Comments:
I miss those fronts sometimes when all you have is 2 seasons down here is summer and not summer..LOL
Member Since: Posts: Comments:

Viewing: 264 - 214

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15Blog Index

Top of Page

About

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

Local Weather

Overcast
62 °F
Overcast