Dr. Jeff Masters' WunderBlog

Late-starting hurricane seasons
Posted by: Dr. Jeff Masters, 02:01 PM GMT del 29 Luglio 2009 +2
Late-starting hurricane seasons--ones where the first named storm of the year doesn't occur until August--have happened in eleven of the fifty years between 1960 - 2009 (a 22% occurrence.) Only two of these eleven seasons ended up with more hurricanes than average (seven or greater). The record for the latest starting hurricane season since 1851 was set in 1914, when the only storm of the season formed on September 15. The year 1941 was also late starting, with the season's first storm arriving on September 11. Of course, we didn't have satellites back then, so it's a good bet there were storms earlier in these seasons that got missed. However, there's a good possibility that 1914 really did have only one storm. A re-analysis of the hurricane activity in the decade 1911-1920 (Landsea et al., 2008) found 1.3 missing tropical cyclones per year, thanks to the inclusion of a new database of ship weather reports called COADS. However, 1914 was not one of those years. Various authors have estimated that we missed an average of between one and three tropical cyclones per year during that time period, so it is quite possible 1914 had only one storm.


Figure 1. The hurricane season of 1914 featured only one tropical storm, and was the latest-starting hurricane season on record (September 15).

The latest dates for the first named storm of the season in the recent past, followed by the number of named storms, hurricanes, and intense hurricanes that year are:

2009 (August 15) 9,3,2
2004 (August 1) 15,9,6
2000 (August 4) 15,8,3
1988 (August 7) 12,6,3
1987 (August 9) 7,3,1
1984 (August 18) 13,5,1
1983 (August 15) 4,2,1
1977 (August 30) 6,5,1
1967 (August 30) 8,6,2
1963 (August 2) 9,6,2
1962 (August 22) 5,3,1

We can also add 1992 to the list if we ignore the unnamed subtropical storm that formed in April of that year. That year had the notorious Hurricane Andrew as its first named storm. Andrew formed on August 17 of that year, and was the only major hurricane in a year that had only seven named storms and four hurricanes. For comparison, an average Atlantic hurricane season has 10 named storms, 6 hurricanes, and 2 intense hurricanes. So, it is a good bet that 2009 will be a below-average season.

References
Landsea, C. W. , D. A. Glenn, W. Bredemeyer, M. Chenoweth, R. Ellis J. Gamache, L. Hufstetler, C. Mock, R. Perez, R. Prieto, J. Sanchez-Sesma, D. Thomas, and L. Woolcock, 2008, A Reanalysis of the 1911-20 Atlantic Hurricane Database", Journal of Climate, 21, p.2138-2168.

Jeff Masters
Categories: Hurricane
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701. WxLogic 12:08 PM GMT del 30 Luglio 2009    
Quoting nyhurricaneboy:
Good morning!

I have a question: If the new invest becomes a tropical depression in the Eastern Pacific but is named in the Central Pacific, which name will it be given (Enrique or Lana)? Thank you!


It should be given the later. As technically it met the requirements to be a Tropical Storm after crossing the Date line.
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702. mikatnight 12:08 PM GMT del 30 Luglio 2009    
Quoting biff4ugo:
I think the 11 intense storms in Dr. Masters Blog for 1983 is an error and should be just 1.
The image shows only 4 storms total.


Yeah, "Alicia" (retired), "Barry", "Chantal", and "Dean".
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703. IKE 12:09 PM GMT del 30 Luglio 2009    
Quoting Beachfoxx:
IKE,
Morning,
Morning all...

Ike wish we could say No Tropical Weather Expected in 2009!


Morning!

good car song....
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704. biff4ugo 12:10 PM GMT del 30 Luglio 2009    
Also,

For disaster relief there is a cool new water purification tech. called "lifesaver" that lets you purify over 4000 leters of water rather than carrying it around with you. The new filtration works down to 15 nm. and even removes viruses.
After Katrina and the Tsunami, the inventor focused on it and got it to work.
http://www.lifesaversystems.com/press.html
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705. nyhurricaneboy 12:14 PM GMT del 30 Luglio 2009    
Quoting WxLogic:


It should be given the later. As technically it met the requirements to be a Tropical Storm after crossing the Date line.


Thank you!
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706. IKE 12:18 PM GMT del 30 Luglio 2009    
Only 30-50%?

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707. KenBaughman 12:19 PM GMT del 30 Luglio 2009    
I don't know if anyone caught it, but I remember a storm in August 1992. Andrew did a lot of damage and is not forgotten.
708. IKE 12:22 PM GMT del 30 Luglio 2009    
Quoting GPTGUY:
I know it's been a slow season..but we all know it only takes one..like 1992 with Hurricane Andrew and I hope everyone is prepared..but hopefully no one will see this on their local forecast on The Weather Channel (assuming you still watch TWC) like I did on 8/28/05!!

a href="http://" target="_blank">Link


The most impressive looking animal I've seen in the GOM. An absolute beast.

Look at all of the lives it uprooted and ruined and lost. Why anyone comes on here wanting that is ?
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710. IKE 12:24 PM GMT del 30 Luglio 2009    
Quoting WeatherStudent:
Good morning all! Ikster, might we go through the entire month of August without a seeing a named storm or is it highly doubtful?


Highly unlikely.

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712. IKE 12:28 PM GMT del 30 Luglio 2009    
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713. ALCoastGambler 12:29 PM GMT del 30 Luglio 2009    
Quoting IKE:
Ohh Ike don't remind me of that one
714. ALCoastGambler 12:30 PM GMT del 30 Luglio 2009    
I lived in Gulfport, MS during Camille
715. stoormfury 12:31 PM GMT del 30 Luglio 2009    
convection has increase with a tropical wave east of the islands. there is a vigorous spin just east of st lucia.this is many of the convective waves to move into the caribbean sea
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716. mikatnight 12:32 PM GMT del 30 Luglio 2009    
Quoting IKE:


The most impressive looking animal I've seen in the GOM. An absolute beast.

Look at all of the lives it uprooted and ruined and lost. Why anyone comes on here wanting that is ?


You know the answer to that. Despite the horror of its impact, it is still a thing of beauty. The same reason people like to watch expolsions or a train wreck. It's undeniably...interesting.
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717. GPTGUY 12:32 PM GMT del 30 Luglio 2009    
a href="http://" target="_blank">Link
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718. IKE 12:33 PM GMT del 30 Luglio 2009    
Quoting mikatnight:


You know the answer to that. Despite the horror of its impact, it is still a thing of beauty. The same reason people like to watch expolsions or a train wreck. It's undeniably...interesting.


True...but, I wouldn't wish one on anyone.....
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719. Cavin Rawlins 12:35 PM GMT del 30 Luglio 2009    
Quoting IKE:
Only 30-50%?



It does look good, something track thank God, lol
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720. Nolehead 12:35 PM GMT del 30 Luglio 2009    
that blob just west of the islands is looking interesting...still a blob but don't see any shear either...
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721. IKE 12:35 PM GMT del 30 Luglio 2009    
Quoting Weather456:


It does look good, something track thank God, lol


I'd have to give that one a 50+.
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722. GPTGUY 12:36 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
I lived in Gulfport, MS during Camille


Where in Gulfport did you live? My mom lived in West Gulfport off of Highway 90 on Camp Ave. lost everything!
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723. nyhurricaneboy 12:37 PM GMT del 30 Luglio 2009    
As for the rest of hurricane season, I think that we will see at least one hurricane in August.

P.S. New blog entry:
An Area of Interest in the Tropics!
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724. ALCoastGambler 12:39 PM GMT del 30 Luglio 2009    
Quoting GPTGUY:


Where in Gulfport did you live? My mom lived in West Gulfport off of Highway 90 on Camp Ave. lost everything!
North of I-10 on 49. Parents still there.
725. Orcasystems 12:40 PM GMT del 30 Luglio 2009    
Blog Update
Reflector site for those at work, which includes Weather456, daily update.


AOI

AOI
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726. IKE 12:40 PM GMT del 30 Luglio 2009    
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727. GPTGUY 12:44 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
North of I-10 on 49. Parents still there.


Really I live off Old Hwy 49 and Hwy 53...where do they live?
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728. Orcasystems 12:43 PM GMT del 30 Luglio 2009    
From Weather456 Blog

The record heat is also being felt in Canada, where on July 28; Victoria, British Columbia reached a record high of 91F beating the old record of 84F set in 1958. Even higher temperature records were set in Port Alberni, which reached 102 degrees, which is shy of the record high temperature of 107 set back in 1926. The highest temperature recorded across Canada during the past day or two was 104 in Lillooet.

Pardon my French, but these temperatures bring new definition to the phrase %u201CHell on Earth%u201D. The cause of this hot weather is not surprisingly, a stagnant deep layer ridge across Western North America that is 1) blocking the normal west to east flow, suppressing cool onshore flow and 2) increasing warm southerly flow into the region. The latest GFS model run show this ridge of high pressure not leaving anytime soon, the earliest being Saturday, so continued high temperatures are in the forecast for the remainder of the week.


Unofficial Temperatures Yesterday
Port Alberni 108
Langford/Victoria (My Home Station) 104.4

The Victoria Weather Stations are on the Waterfront... I wish I was.
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729. OSUWXGUY 12:43 PM GMT del 30 Luglio 2009    
Some very nice rotation with the wave emerging late today/early tomorrow from Africa! Not all that impressed with the Caribbean wave or the eastern Atlantic wave at the moment...but worth watching. Am surprised by the quikscat for the eastern Atlantic wave though.

AFRICAN WAVE ANIMATION

730. ALCoastGambler 12:44 PM GMT del 30 Luglio 2009    
Quoting IKE:
Well dang Ike your on a roll this morning...lol
Don't remind me of that one either. I live on Mobile Bay now. Show one that hit Idaho or something. I don't live there....lol
731. ALCoastGambler 12:45 PM GMT del 30 Luglio 2009    
Quoting GPTGUY:


Really I live off Old Hwy 49 and Hwy 53...where do they live?
Orange Grove
732. IKE 12:45 PM GMT del 30 Luglio 2009    
Here's another one.......


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733. IKE 12:47 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
Well dang Ike your on a roll this morning...lol
Don't remind me of that one either. I live on Mobile Bay now. Show one that hit Idaho or something. I don't live there....lol


LOL...sorry.

Just trying to convince anyone(not you), that might want one of these...their no fun. Only fun to track, not experience.
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734. mikatnight 12:47 PM GMT del 30 Luglio 2009    
Quoting Orcasystems:
From Weather456 Blog

The record heat is also being felt in Canada, where on July 28; Victoria, British Columbia reached a record high of 91F beating the old record of 84F set in 1958. Even higher temperature records were set in Port Alberni, which reached 102 degrees, which is shy of the record high temperature of 107 set back in 1926. The highest temperature recorded across Canada during the past day or two was 104 in Lillooet.

Pardon my French, but these temperatures bring new definition to the phrase %u201CHell on Earth%u201D. The cause of this hot weather is not surprisingly, a stagnant deep layer ridge across Western North America that is 1) blocking the normal west to east flow, suppressing cool onshore flow and 2) increasing warm southerly flow into the region. The latest GFS model run show this ridge of high pressure not leaving anytime soon, the earliest being Saturday, so continued high temperatures are in the forecast for the remainder of the week.


Unofficial Temperatures Yesterday
Port Alberni 108
Langford/Victoria (My Home Station) 104.4

The Victoria Weather Stations are on the Waterfront... I wish I was.


And yet the temperatures for upstate NY this year have been unseasonably cool.
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735. IKE 12:49 PM GMT del 30 Luglio 2009    
Eastern Caribbean wave is firing up.
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736. Nolehead 12:50 PM GMT del 30 Luglio 2009    
frederic,ivan,dennis,erin,opal,danny,georges,..hannah,these are just a few that i can remember going through in the past 30+ years between mobile and just east of pensacola...i'm sure i've forgotten some but good grief thses are enough...lol
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737. nrtiwlnvragn 12:53 PM GMT del 30 Luglio 2009    
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738. claimsadjuster 12:54 PM GMT del 30 Luglio 2009    
Quoting IKE:
Eastern Caribbean wave is firing up.


I noticed that to Ike. What are the conditions ahead of this wave?
739. ALCoastGambler 12:55 PM GMT del 30 Luglio 2009    
Quoting IKE:


LOL...sorry.

Just trying to convince anyone(not you), that might want one of these...their no fun. Only fun to track, not experience.
They are no fun at all to go through. I have been through every storm since Camille. I am one of the "stupid" ones who doesn't leave. One reason is I am a firefighter who has to work. But when I don't, I stay for disaster assistance at our local vol. fire department. I vol. 2 weeks of my vacation time after a storm to assist in handing out food and water at these places. But, I would advise everyone to leave if a storm comes in. A CAT-2 or above can cause major flooding and cause havoc on resourses. So if anyone is advised by local admin. offices to evac. PLEASE do so.
740. IKE 12:57 PM GMT del 30 Luglio 2009    
Quoting claimsadjuster:


I noticed that to Ike. What are the conditions ahead of this wave?


If it went WNW is it's best chance. Going west probably shears it.....

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741. IKE 12:58 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
They are no fun at all to go through. I have been through every storm since Camille. I am one of the "stupid" ones who doesn't leave. One reason is I am a firefighter who has to work. But when I don't, I stay for disaster assistance at our local vol. fire department. I vol. 2 weeks of my vacation time after a storm to assist in handing out food and water at these places. But, I would advise everyone to leave if a storm comes in. A CAT-2 or above can cause major flooding and cause havoc on resourses. So if anyone is advised by local admin. offices to evac. PLEASE do so.


Nice of you to do that.
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742. DestinFishHead 01:02 PM GMT del 30 Luglio 2009    
Quoting Nolehead:
frederic,ivan,dennis,erin,opal,danny,georges,..hannah,these are just a few that i can remember going through in the past 30+ years between mobile and just east of pensacola...i'm sure i've forgotten some but good grief thses are enough...lol


Sat thru all but Opal nolehead...my dad panicked...sat thru Ivan and Dennis here in Destin. that was certainly interesting
743. weathermanwannabe 01:04 PM GMT del 30 Luglio 2009    
Good Morning. Here's a continuation of something I posted yesterday:

Now looking at the models, I don’t see much activity in the near future. Models that go out beyond a week don’t show much either. Extended models are virtually clear too. The most far reaching model available to me goes out to August 14th, but forecasts that far out aren’t very dependable. Funny thing though. Out of the seasons that had an August start over the past 50 years, the first named storm on average developed, you guessed it, August 14th!

So we’re already off to a late start, and El Nino (like in 1992) should produce lower numbers. But does this mean that “The Big One” will be out there? If history proves itself, then there would be almost a 60% chance of that happening!

Written by Baker
July 29th, 2009 at 10:59 am
KATC Storm Team 3 Weather

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744. mikatnight 01:07 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
They are no fun at all to go through. I have been through every storm since Camille. I am one of the "stupid" ones who doesn't leave. One reason is I am a firefighter who has to work. But when I don't, I stay for disaster assistance at our local vol. fire department. I vol. 2 weeks of my vacation time after a storm to assist in handing out food and water at these places. But, I would advise everyone to leave if a storm comes in. A CAT-2 or above can cause major flooding and cause havoc on resourses. So if anyone is advised by local admin. offices to evac. PLEASE do so.


God bless you Gambler for your dedication. You bring up a point though about evacuation. It seems to be hard to get through people's heads that one should not evacuate from the wind (unless the dwelling is deemed compromisable), but the storm surge or a flood zone. Even then, one shouldn't evacuate the region, but just the area. Generally 5-10 miles (at least on the E. coast of Fla) is plenty. If more people understood this it would make it alot easier on those who have to leave (like everyone in the Keys, or people around Lake O). :)
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745. Nolehead 01:11 PM GMT del 30 Luglio 2009    
DestinFishHead

yep, i would say anyone that lives oh..between biloxi and destin have had there FULL share of these things...yes they are wonderful to look at on the satellite, and track... but going through a major storm....well it puts it all into perspective when after you see what just hit you....wouldn't want to wish this on anyone and anyone who would needs to be checked into a mental clinic....
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746. kmanislander 01:13 PM GMT del 30 Luglio 2009    
Good morning

Quikscat this morning continues to show an elongated surface low oriented NE to SW with the feature near 11N 35W.

850 mb vorticity is also much improved from yesterday and convection, though relatively weak, has hung on. SAL is presently holding this wave in check but I still think it may a have chance to develop once it nears 50W.

Something to watch for over the next 48 hrs.
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747. Autistic2 01:18 PM GMT del 30 Luglio 2009    
Crash, Thunder, Boom, wait a minute,
No Crash, Thunder or Boom!
Does this mean POOF?
Season Over?

1914 one storm?

I thought Hurricanes were giant heat engines to move energy from the lower latitudes towards the poles?

Didn’t Al Gore say something about more storms and more intense storms?

If its poof won’t the oceans over heat near the lower latitudes (semi global warming) and over cool the poles (semi global cooling).
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748. claimsadjuster 01:19 PM GMT del 30 Luglio 2009    
Quoting Nolehead:
DestinFishHead

yep, i would say anyone that lives oh..between biloxi and destin have had there FULL share of these things...yes they are wonderful to look at on the satellite, and track... but going through a major storm....well it puts it all into perspective when after you see what just hit you....wouldn't want to wish this on anyone and anyone who would needs to be checked into a mental clinic....


My job is in the flood adjusting field after a sotrm or flooding event.my job is to help people put their lives back together after this type thing. I myself have went through many storms at my own home. But when I see what happens at my place(After Katrina in Mobile) and had to go to Mississippi and LA I knew I was blessed with the small amount of damage I had. For the most part the people I dealt with got out and came back to see what was left but I did have the few that did not leave and you can guess what the results of that was. So please if you are asked to leave they are only asking you to do what is safe for you. You can rebuild a home and replace some things in the home but you can not replace a life.
749. weathermanwannabe 01:20 PM GMT del 30 Luglio 2009    
Quoting kmanislander:
Good morning

Quikscat this morning continues to show an elongated surface low oriented NE to SW with the feature near 11N 35W.

850 mb vorticity is also much improved from yesterday and convection, though relatively weak, has hung on. SAL is presently holding this wave in check but I still think it may a have chance to develop once it nears 50W.

Something to watch for over the next 48 hrs.


Morning; a small pocket of 20 knots of sheer just to the south of it, but, 5-10 knots immediately to it's West.
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750. ALCoastGambler 01:23 PM GMT del 30 Luglio 2009    
Quoting mikatnight:


God bless you Gambler for your dedication. You bring up a point though about evacuation. It seems to be hard to get through people's heads that one should not evacuate from the wind (unless the dwelling is deemed compromisable), but the storm surge or a flood zone. Even then, one shouldn't evacuate the region, but just the area. Generally 5-10 miles (at least on the E. coast of Fla) is plenty. If more people understood this it would make it alot easier on those who have to leave (like everyone in the Keys, or people around Lake O). :)
Mika, I live on high ground ie: 20-25' above sea level. I never flood. BUT, I also live on a river. Tidal surge flows up the river for miles. During Ivan, for example, a firefighter and myself, had his personal boat on the water with 40-50 mph winds still blowing to save people from flooding water because the storm was "going to Flordia". That is another reason I hate to hear someone ask where it's going. A storm is not a pinpoint. Too many people see it going away from their front door so they don't even look at the back door. Which puts alot of rescue personnel at very high risk. And also people new to hurricane prone areas need to realize that most city and state org. will not help you when winds exceed 45-50 mph.. We did it at our own risk.So please everyone remember this. After 45 moh winds most, if not all, city, state, and private, police fire ambulance services are shut down until conditions are safe for employees
751. Autistic2 01:29 PM GMT del 30 Luglio 2009    
Quoting ALCoastGambler:
Mika, I live on high ground ie: 20-25' above sea level. I never flood. BUT, I also live on a river. Tidal surge flows up the river for miles. During Ivan, for example, a firefighter and myself, had his personal boat on the water with 40-50 mph winds still blowing to save people from flooding water because the storm was "going to Flordia". That is another reason I hate to hear someone ask where it's going. A storm is not a pinpoint. Too many people see it going away from their front door so they don't even look at the back door. Which puts alot of rescue personnel at very high risk. And also people new to hurricane prone areas need to realize that most city and state org. will not help you when winds exceed 45-50 mph.. We did it at our own risk.So please everyone remember this. After 45 moh winds most, if not all, city, state, and private, police fire ambulance services are shut down until conditions are safe for employees


Are you not supposed to pay attention if you are anywhere in that cone that the NHC draws on thier maps?
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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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