Dr. Jeff Masters' WunderBlog

Matthew drenching Central America and Mexico
Posted by: Dr. Jeff Masters, 3:35 PM GMT on September 25, 2010 +4
Tropical Storm Matthew continues to dump heavy rains over Honduras, Belize, Guatemala, and neighboring regions of Mexico today. Puerto Barrios, in northern Guatemala, has received 4.57" of rain in the past 24 hours. With Matthew expected to slow down and dissipate by Sunday, the storm's heavy rains of 6 - 15 inches can be expected to cause severe flooding and dangerous mudslides. The rains are of particular concern for Guatemala, which suffered its rainiest August in its history, followed by the landfall of Tropical Depression 11E during the first week of September, which dumped torrential rains on the country that triggered flooding and mudslides that killed at least 48 Guatemalans.


Figure 1. Visible satellite image from NASA's Terra satellite taken yesterday, showing Tropical Storm Matthew approaching landfall.


Figure 2. Forecast rain amounts for the 5-day period beginning at 2am EDT today (Saturday, September 25) as predicted by this morning's 2am EDT (6Z) run of the GFDL. Very heavy rains in excess of eight inches (yellow colors) are predicted for portions of Central America along Matthew's track. Image credit: Morris Bender, NOAA/GFDL.

Lisa
Tropical Storm Lisa pulled a bit of a surprise last night, intensifying into a Category 1 hurricane with 80 mph winds in the far Eastern Atlantic. Lisa's longitude of 27.9W at the time made it the 10th strongest hurricane so far east in the Atlantic. Record keeping began in 1851, but it is likely that many hurricanes stronger than Lisa were missed prior to the advent of reliable satellite coverage in 1974. Lisa is even farther east than Category 4 Hurricane Julia, which earlier this month set the record for strongest hurricane ever recorded so far east. Lisa's glory will be short-lived, though, as strong upper level winds out of the west are expected to increase tonight, bringing high wind shear of 20 - 45 knots over the storm. The high shear may be capable of destroying the storm by early next week. It appears unlikely that Lisa will affect any land areas.

Forecast for the rest of the tropics
Most of the models continue to predict that by Wednesday, the remnants of Matthew, and/or a piece of a tropical disturbance over the Eastern Pacific off the coast of Guatemala, will evolve into a huge and very wet low pressure system that will start spinning over Central America and the Western Caribbean. NHC has been referring to this expected storm as a "monsoon low", and these sorts of storms are very dangerous for Central America and the Western Caribbean, even if they do not develop into a tropical storm. In October 2007, a similar monsoon low I dubbed "the sleeping giant" spent a week spinning over the region, dumping very heavy rains over all of Central America and the countries bordering the Western Caribbean. Rains from this system triggered flooding that killed 45 people in Haiti, damaged thousands of homes in Cuba, and caused havoc in Guatemala, El Salvador, Belize, Mexico, Jamaica, the Cayman Islands, and the Bahamas. A similar type of storm is likely to develop on Wednesday and Thursday, and most of Central America and the nations surrounding the Western Caribbean can expect to see dangerous flooding rains develop this week in association with this giant low. Most of the models also predict that this big low will eventually develop into a tropical storm or hurricane that would be drawn northwards over Cuba late in the week, and threaten the Bahamas, Florida, or the U.S. Gulf of Mexico coast. This is an exceptionally difficult system to forecast correctly, and the models have been coming up with some pretty unusual solutions as to what might happen. We'll just have to wait and see what unfolds over the next few days.

I'll have an update Sunday by 2pm.

Jeff Masters
Categories: Hurricane
  Permalink | A A A
Reader Comments
Display: 0, 50, 100, 200 Sort: Newest First - Order Posted
Viewing: 801 - 851

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51Blog Index

808. WeatherNerdPR 11:16 PM GMT on September 25, 2010    
Quoting TropicalAnalystwx13:
Wow. Karl is the costliest storm this year.

Damage totals are estimated to be $3.9 billion

Speaking about damaging storms, Igor's damage to Newfoundland is probably well over $100 million, pretty much Newfoundland's Juan.
Member Since: July 7, 2010 Posts: 0 Comments: 5464
810. truecajun 11:17 PM GMT on September 25, 2010    
Quoting TropicalAnalystwx13:
This storm made landfall yesterday:



Ahhhhhh, there were swimming cows everywhere out in the country. that's my most vivid memory of rita. ok, really I'm going. waiting on the one of the youngins to tye her shoes
Member Since: August 24, 2006 Posts: 0 Comments: 1848
813. leo305 11:18 PM GMT on September 25, 2010    
Quoting leo305:


I think nicole may form earlier than expected.. and if it does... it could be a monster.. considering it's not expected to move over cuba until mid week next week...

there may also be a very weak surface circulation forming around 83 W and 13-13.5N as we speak...




in fact.. if you look south of that area.. there are some westerly moving clouds coming from west to east over central america, and into the gulf of Honduras...

so there really might be a surface low forming right there.. and it's not moving that much towards the WNW/NW at the moment
Member Since: April 17, 2010 Posts: 0 Comments: 1752
819. Grothar 11:19 PM GMT on September 25, 2010    
Quoting TropicalAnalystwx13:
This storm made landfall yesterday:



Home come nobody mentioned it?
Member Since: July 17, 2009 Posts: 57 Comments: 19552
820. TropicalAnalystwx13 11:19 PM GMT on September 25, 2010    
Quoting Grothar:


Home come nobody mentioned it?


Because we were all worried about Matthew's landfall yesterday.
Member Since: July 6, 2010 Posts: 89 Comments: 25338
823. WXTXN 11:20 PM GMT on September 25, 2010    
Quoting sammywammybamy:


1) Texas is Protected by the Cold Front.

2) Ships is not a Track Model , its more of an Intenisity Model

3)It will not make it into the BOC, Its Circulation is getting Ripped Appart

4) It is Highley Unlikely at this point this heads to your house.. which is problay in texas.

5) Do any other models other than SHIPS Support your claim?

Member Since: July 10, 2010 Posts: 0 Comments: 139
827. WeatherNerdPR 11:21 PM GMT on September 25, 2010    
Quoting TropicalAnalystwx13:
This storm made landfall yesterday:


Why did we forget?
Member Since: July 7, 2010 Posts: 0 Comments: 5464
830. RitaRefugee 11:22 PM GMT on September 25, 2010    
Quoting TropicalAnalystwx13:
This storm made landfall yesterday:

I remember it well...lost my house. Very traumatic to my kids.
Member Since: August 16, 2009 Posts: 0 Comments: 102
834. Chicklit 11:24 PM GMT on September 25, 2010    
Member Since: July 11, 2006 Posts: 14 Comments: 10254
841. leo305 11:26 PM GMT on September 25, 2010    
Quoting cat5hurricane:

All the more reason of a potential really big storm if that would play out. It will have had even more time over the Caribbean as it's center will be born at almost the furthest eastern boundaries of the Caribbean.


yea.. matthew looks like it's about to fall apart.. looking at visible satellite the surface circulation or its core is becoming very weak as there isn't much cloud movement over Belize.. despite the center being real close to that area.. it also looks like it's no longer moving towards the North west.. but more towards the west at the moment
Member Since: April 17, 2010 Posts: 0 Comments: 1752
844. WXTXN 11:27 PM GMT on September 25, 2010    
You forgot a yellow area over the BOC .
Quoting sammywammybamy:

Member Since: July 10, 2010 Posts: 0 Comments: 139
845. alcomat 11:28 PM GMT on September 25, 2010    
Quoting Hurricanes101:


Stormchaser2007 can repost that first advisory track

NHC track-wise has been nearly dead on
dead on? oh really? what about that sharp right hook toward florida,that it was supposed to take,when it got to the coast of the yucatan? I would say more like dead off..
Member Since: August 8, 2007 Posts: 0 Comments: 95
847. Grothar 11:28 PM GMT on September 25, 2010    
GFS 132 out

Member Since: July 17, 2009 Posts: 57 Comments: 19552
850. Hurricanes101 11:28 PM GMT on September 25, 2010    
Quoting WXTXN:



there will not be anything in the BOC, the steering flow just does not agree with that
Member Since: March 10, 2010 Posts: 1 Comments: 6902
851. leo305 11:28 PM GMT on September 25, 2010    
Quoting cat5hurricane:

This Nicole (as she will most likely form) really scares me for some reason.


if it develops early, it's ganna drifting over near 90 degree waters for days.. once and if it develops a tight core over those waters.. wouldn't suprise me if we get a major out of it fairly quickly..

again this all depends on when it forms its closed circulation and where it's located..

but it's looking to me like something is trying to develop in the gulf of honduras and driving North westward towards the western carribean right now.
Member Since: April 17, 2010 Posts: 0 Comments: 1752

Viewing: 801 - 851

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51Blog Index

New Comment
Community Standards Policy Comments will take a few seconds to appear.
Post Your Comments
Please sign in to post comments.
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.
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.

Community Activity