Tsunami Warning

[Pericles]

Should make SL around 9, I think. Costal boys, get ready to run for the hills.

[GearHead]

sad scene...hope it wouldnt be as devastating as the last time...the funny thing is though as soon as something like this happens the whole communication system goes down...stupid mabile operators only have a very limited capacity even if they keep giving new connections all the time..wasnt dialog celebrating saying that they got more than 1 million users....whats the point of that when you cant even give a call to someone when the country is in an emergency situation..

Edited September 12, 2007 by GearHead

[thushara_g]

Doesnt look like any major wave. Small or none.

But any aftershocks can create waves again.

[Bugatti]

  GearHead said:

sad scene...hope it wouldnt be as devastating as the last time...the funny thing is though as soon as something like this happens the whole communication system goes down...stupid mabile operators only have a very limited capacity even if they keep giving new connections all the time..wasnt dialog celebrating saying that they got more than 1 million users....whats the point of that when you cant even give a call to someone when the country is in an emergency situation..

Dude,

No mobile network is dimensioned for 3 million simultaneous calls... (considering dialog as an example) Network dimension is done on an assumption of call attempts. BHCA (Busy Hour Call Attempts) which is about 6.4 million BHCA today, meaning approximately 1700 call attempts per second.

Anything higher would come with a sever price tag.. and is not necessarily needed unless we have concurrent chaotic situations, or Tsunamis.

Just a thought.

[The Don]

heard that the tsunami warning has been called off in Indonesia, so hopefully the danger has passed or so we all hope

i read of reports of a small tsunami over there measuring 2-3 feet but thats unconfirmed

[GearHead]

  Bugatti said:

Dude,

No mobile network is dimensioned for 3 million simultaneous calls... (considering dialog as an example) Network dimension is done on an assumption of call attempts. BHCA (Busy Hour Call Attempts) which is about 6.4 million BHCA today, meaning approximately 1700 call attempts per second.

Anything higher would come with a sever price tag.. and is not necessarily needed unless we have concurrent chaotic situations, or Tsunamis.

Just a thought.

thanks for the info bro. machan any idea about the capacities that our main mobile operators are operating at?

[Pericles]

Warning called off a little after 8pm

[Elvis_Pil]

  Bugatti said:

Dude,

No mobile network is dimensioned for 3 million simultaneous calls... (considering dialog as an example) Network dimension is done on an assumption of call attempts. BHCA (Busy Hour Call Attempts) which is about 6.4 million BHCA today, meaning approximately 1700 call attempts per second.

Anything higher would come with a sever price tag.. and is not necessarily needed unless we have concurrent chaotic situations, or Tsunamis.

Just a thought.

Its not a question of 3mil simultaneous calls.. numbers noted by providers are the number of sold connections not the number of subscribers or the number of active users.. even though the 1mil or 3 mil tag line makes good marketing. Anyway no network will ever have a situations where every one of its connections are active.

Putting things simply- phone networks are limited by several factors including max number of call attempts possible per base station, switch/PSTN capacity and other operator inter connection capacity- these factors contribute to congestion. In an emergency all these factors among others come under pressure.

Larger mobile service Providers should have adequate capacity to handle emergency situations as communications has become an essential service. At least enough capacity to handle calls within their own network as the other operator factor is beyond their control. Also the size of the Lankan subscriber base is nothing compared countries like say India.

Financials not good? Well their only the number one listed company on the CSE who just pumped in $200mil in SL investment and spend millions on marketing alone every month. Surely a bit of investment in handling disaster situations may be worth it?

I donno.. maybe someone in the industry can shed more light..

Edited September 12, 2007 by Pilawoos

[madmax]

  GearHead said:

thanks for the info bro. machan any idea about the capacities that our main mobile operators are operating at?

Dude if it was the US people would have already sued the network operators. I believe these jams are due to selling more connections than they can actually support. And they make it a big point to shout out the number of subscribers. No point having 3 mil crippled subscribers!

The whole communication network is useless in an Emergency!

Edited September 13, 2007 by madmax

[Croozer]

  madmax said:

Dude if it was the US people would have already sued the network operators. I believe these jams are due to selling more connections than they can actually support. And they make it a big point to shout out the number of subscribers. No point having 3 mil crippled subscribers!

The whole communication network is useless in an Emergency!

Agreed Madmax. Guess Pila pointed out the real scenario clearly. Actually the published numbers are the total registered customer base only. With any operator at any given time there is a % of non active & temp disconnected base.

Eventhough its true that there are operators who sell beyond their capacity, there is also another side to it. Actually for Eg if you take Location say "kandy town 1" the network planning dept will decide how many subscribers can be connected at a time thru this tower. There is a thing called 'Channels' fitted in every tower which handles customers in multiples of 4 if I remember. Heavy research & monitoring is done on this segment specially when the area or the tower is new. Once they identify a routine call pattern, they smooth sail on this data (rarely increasing Channels [capacity] if there are load of customer complaints). But what happens on a crisis situ is that this ratio increases tremendously hence creating netowrk congestion. In normal situation the operators tend to maintain these channels at minimal level coz increasing channels is very COSTLY. Remember they are very concerned on ROI. In addition as Pila mentioned the other operators also play a key role in something called 'interconnection' where network call transferring takes place.

What to do, gotta survive with what we've got ah this is SL

[Bugatti]

  GearHead said:

thanks for the info bro. machan any idea about the capacities that our main mobile operators are operating at?

What I posed above are actuals.. I can't put up anything more specific as it is confidential. However, there are certain V*P customers who are tagged, and are give priority in situations that the network is congested. Meaning that at a time that all channels are utilized, if a V*P tagged number makes an attempt, he's able to get through.

Also remember that the entire network is monitored on a 24/7 basis and on a disaster situation the traffic mix is altered.

this is a pretty broad topic and discussions can go on for ever... I at this point I chose to stop.

Cheers..

[Croozer]

  Bugatti said:

What I posed above are actuals.. I can't put up anything more specific as it is confidential. However, there are certain V*P customers who are tagged, and are give priority in situations that the network is congested. Meaning that at a time that all channels are utilized, if a V*P tagged number makes an attempt, he's able to get through.

Also remember that the entire network is monitored on a 24/7 basis and on a disaster situation the traffic mix is altered.

this is a pretty broad topic and discussions can go on for ever... I at this point I chose to stop.

Cheers..

Spot on Bugatti

[milinda]

  madmax said:

Dude if it was the US people would have already sued the network operators. I believe these jams are due to selling more connections than they can actually support. And they make it a big point to shout out the number of subscribers. No point having 3 mil crippled subscribers!

The whole communication network is useless in an Emergency!

Dont know abt US but I remember on 07/07/2005 london bus bombing (7/7 bombing)incident and just like here in SL all the mobile networks were down in london. I guess same must have happend in US during 9/11 bombing. But never heard anybody sued a service provider though

[Pericles]

8.7 Earthquake off West Sumatra boys. Brace. Official watch issues, no official tsunami yet

[Ripper]

  On 4/11/2012 at 9:21 AM, Pericles said:

8.7 Earthquake off West Sumatra boys. Brace. Official watch issues, no official tsunami yet

anybody know possible ETA of a possible tsunami?

I live 2mins walk from the beach and last time around water did make landfall. not as violently as it did in the south and eastern coasts. But you can never be too safe with these things

[Straga]

Tsunami warning issued, MAY hit trinco later today. According to news first on yes fm..

[JadeyBlitzen]

8.7 may seem like big number but compared to the 9.0 of 2004 only about 1/3rd of the energy is released.

  On 4/11/2012 at 9:37 AM, Ripper said:

anybody know possible ETA of a possible tsunami?

I live 2mins walk from the beach and last time around water did make landfall. not as violently as it did in the south and eastern coasts. But you can never be too safe with these things

by last time are you talking about the 2004 tsunami?

[heavyD]

  On 4/11/2012 at 9:37 AM, Ripper said:

anybody know possible ETA of a possible tsunami?

I live 2mins walk from the beach and last time around water did make landfall. not as violently as it did in the south and eastern coasts. But you can never be too safe with these things

I think it was 1130 Zulu for Colombo. And hour earlier for Trinco. I just can't seem to find the site I came across earlier.

[Chooti Putha]

Any idea if the Tsunami will effect sri lanka?

[MasterDon]

oh shit!..I don't wanna die!!!

[b4es5]

Between 4.30 - 6 pm I believe. Pacific Tsunami Warning Notice below:

000

WEIO21 PHEB 110845

TSUIOX

TSUNAMI BULLETIN NUMBER 001

PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS

ISSUED AT 0845Z 11 APR 2012

THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN.

... AN INDIAN-OCEAN-WIDE TSUNAMI WATCH IS IN EFFECT ...

A TSUNAMI WATCH IS IN EFFECT FOR

INDONESIA / INDIA / SRI LANKA / AUSTRALIA / MYANMAR / THAILAND /

MALDIVES / UNITED KINGDOM / MALAYSIA / MAURITIUS / REUNION /

SEYCHELLES / PAKISTAN / SOMALIA / OMAN / MADAGASCAR / IRAN /

UAE / YEMEN / COMORES / BANGLADESH / TANZANIA / MOZAMBIQUE /

KENYA / CROZET ISLANDS / KERGUELEN ISLANDS / SOUTH AFRICA /

SINGAPORE

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY

NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE

DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND

ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 0839Z 11 APR 2012

COORDINATES - 2.0 NORTH 92.5 EAST

LOCATION - OFF W COAST OF NORTHERN SUMATRA

MAGNITUDE - 8.7

EVALUATION

EARTHQUAKES OF THIS SIZE HAVE THE POTENTIAL TO GENERATE A

WIDESPREAD DESTRUCTIVE TSUNAMI THAT CAN AFFECT COASTLINES ACROSS

THE ENTIRE INDIAN OCEAN BASIN.

HOWEVER - IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS

WATCH IS BASED ONLY ON THE EARTHQUAKE EVALUATION. AUTHORITIES IN

THE REGION SHOULD TAKE APPROPRIATE ACTION IN RESPONSE TO THE

POSSIBILITY OF A WIDESPREAD DESTRUCTIVE TSUNAMI.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS

WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL

ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE

LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN

SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FORECAST POINT COORDINATES ARRIVAL TIME

-------------------------------- ------------ ------------

INDONESIA SIMEULUE 2.5N 96.0E 0921Z 11 APR

BANDA_ACEH 5.5N 95.1E 0931Z 11 APR

SIBERUT 1.5S 98.7E 0941Z 11 APR

PADANG 0.9S 100.1E 1017Z 11 APR

BENGKULU 3.9S 102.0E 1038Z 11 APR

CILACAP 7.8S 108.9E 1205Z 11 APR

BANDAR_LAMPUNG 5.7S 105.3E 1213Z 11 APR

BALI 8.7S 115.3E 1253Z 11 APR

KUPANG 10.0S 123.4E 1338Z 11 APR

BELAWAN 3.8N 98.8E 1348Z 11 APR

BALI 8.7S 115.3E 1253Z 11 APR

INDIA GREAT_NICOBAR 7.1N 93.6E 0937Z 11 APR

LITTLE_ANDAMAN 10.7N 92.3E 1016Z 11 APR

PORT_BLAIR 11.9N 92.7E 1032Z 11 APR

NORTH_ANDAMAN 13.3N 92.6E 1052Z 11 APR

CHENNAI 13.4N 80.4E 1127Z 11 APR

KAKINADA 17.2N 82.7E 1205Z 11 APR

TRIVANDRUM 8.3N 76.9E 1208Z 11 APR

MANGALORE 13.3N 74.4E 1336Z 11 APR

BOMBAY 18.8N 72.6E 1608Z 11 APR

GULF_OF_KUTCH 22.7N 68.9E 1634Z 11 APR

SRI LANKA DONDRA_HEAD 5.9N 80.6E 1039Z 11 APR

TRINCOMALEE 8.7N 81.3E 1051Z 11 APR

COLOMBO 6.9N 79.8E 1120Z 11 APR

JAFFNA 9.9N 80.0E 1231Z 11 APR

AUSTRALIA COCOS_ISLAND 12.1S 96.7E 1045Z 11 APR

NORTH_WEST_CAPE 21.5S 113.9E 1314Z 11 APR

CAPE_INSPIRATIO 25.9S 113.0E 1413Z 11 APR

PERTH 32.0S 115.3E 1420Z 11 APR

AUGUSTA 34.3S 114.7E 1440Z 11 APR

GERALDTOWN 28.6S 114.3E 1459Z 11 APR

CAPE_LEVEQUE 16.1S 122.6E 1506Z 11 APR

ESPERANCE 34.0S 121.8E 1615Z 11 APR

KINGSTON_SOUTH_ 37.0S 139.4E 1748Z 11 APR

HEARD_ISLAND 54.0S 73.5E 1802Z 11 APR

EUCLA_MOTEL 31.8S 128.9E 1836Z 11 APR

HOBART 43.3S 147.6E 1901Z 11 APR

DARWIN 12.1S 130.7E 1935Z 11 APR

MYANMAR CHEDUBA_ISLAND 18.9N 93.4E 1149Z 11 APR

CHEDUBA_ISLAND 18.9N 93.4E 1149Z 11 APR

PYINKAYAING 15.9N 94.3E 1150Z 11 APR

SITTWE 20.0N 92.9E 1226Z 11 APR

MERGUI 12.8N 98.4E 1316Z 11 APR

YANGON 16.5N 96.4E 1507Z 11 APR

THAILAND PHUKET 8.0N 98.2E 1118Z 11 APR

KO_PHRA_THONG 9.1N 98.2E 1223Z 11 APR

KO_TARUTAO 6.6N 99.6E 1256Z 11 APR

MALDIVES GAN 0.6S 73.2E 1137Z 11 APR

MINICOV 8.3N 73.0E 1210Z 11 APR

MALE 4.2N 73.6E 1211Z 11 APR

UNITED KINGDOM DIEGO_GARCIA 7.3S 72.4E 1153Z 11 APR

MALAYSIA GEORGETOWN 5.4N 100.1E 1311Z 11 APR

PORT_DICKSON 2.5N 101.7E 1810Z 11 APR

MAURITIUS PORT_LOUIS 20.0S 57.3E 1455Z 11 APR

REUNION ST_DENIS 20.8S 55.2E 1512Z 11 APR

SEYCHELLES VICTORIA 4.5S 55.6E 1516Z 11 APR

PAKISTAN GWADAR 25.1N 62.4E 1536Z 11 APR

KARACHI 24.7N 66.9E 1644Z 11 APR

SOMALIA CAPE_GUARO 11.9N 51.4E 1539Z 11 APR

HILALAYA 6.4N 49.1E 1540Z 11 APR

MOGADISHU 2.0N 45.5E 1558Z 11 APR

KAAMBOONI 1.5S 41.9E 1623Z 11 APR

OMAN MUSCAT 23.9N 58.6E 1540Z 11 APR

SALALAH 16.9N 54.1E 1547Z 11 APR

DUQM 19.7N 57.8E 1556Z 11 APR

MADAGASCAR ANTSIRANANA 12.1S 49.5E 1544Z 11 APR

TOAMASINA 17.8S 49.6E 1551Z 11 APR

MANAKARA 22.2S 48.2E 1610Z 11 APR

MAHAJANGA 15.4S 46.2E 1653Z 11 APR

CAP_STE_MARIE 25.8S 45.2E 1713Z 11 APR

TOLIARA 23.4S 43.6E 1733Z 11 APR

IRAN GAVATER 25.0N 61.3E 1546Z 11 APR

UAE FUJAIRAH 25.1N 56.4E 1621Z 11 APR

YEMEN AL_MUKALLA 14.5N 49.2E 1626Z 11 APR

ADEN 13.0N 45.2E 1726Z 11 APR

COMORES MORONI 11.6S 43.3E 1644Z 11 APR

BANGLADESH CHITTAGONG 22.7N 91.2E 1651Z 11 APR

TANZANIA LINDI 9.8S 39.9E 1659Z 11 APR

DAR_ES_SALAAM 6.7S 39.4E 1732Z 11 APR

MOZAMBIQUE CABO_DELGADO 10.7S 40.7E 1701Z 11 APR

ANGOCHE 15.5S 40.6E 1720Z 11 APR

QUELIMANE 18.0S 37.1E 1841Z 11 APR

MAPUTO 25.9S 32.8E 1959Z 11 APR

BEIRA 19.9S 35.1E 2016Z 11 APR

KENYA MOMBASA 4.0S 39.7E 1706Z 11 APR

CROZET ISLANDS CROZET_ISLANDS 46.4S 51.8E 1733Z 11 APR

KERGUELEN ISLAN PORT_AUX_FRANCA 49.0S 69.1E 1815Z 11 APR

SOUTH AFRICA PRINCE_EDWARD_I 46.6S 37.6E 1907Z 11 APR

DURBAN 29.8S 31.2E 1910Z 11 APR

PORT_ELIZABETH 33.9S 25.8E 2006Z 11 APR

CAPE_TOWN 34.1S 18.0E 2109Z 11 APR

SINGAPORE SINGAPORE 1.2N 103.8E 2351Z 11 APR

ADDITIONAL BULLETINS WILL BE ISSUED BY THE PACIFIC TSUNAMI

WARNING CENTER FOR THIS EVENT AS MORE INFORMATION

BECOMES AVAILABLE.

THE JAPAN METEOROLOGICAL AGENCY MAY ISSUE ADDITIONAL INFORMATION

FOR THIS EVENT. IN THE CASE OF CONFLICTING INFORMATION...THE

MORE CONSERVATIVE INFORMATION SHOULD BE USED FOR SAFETY.

[Crosswind]

PTWC Bulletin:

http://ptwc.weather.gov/ptwc/text.php?id=indian.TSUIOX.2012.04.11.0845

Pls note that what PTWC says is there's no evidence of a tsunami being generated. However, if there was one, the ETAs would be 1610hrs in Trincomalee 1650hrs in Colombo and 1800hrs in Jaffna.

[VVTi]

  On 4/11/2012 at 9:50 AM, MasterDon said:

oh shit!..I don't wanna die!!!

Where you are, you need a BIG tsunami...

[MasterDon]

  On 4/11/2012 at 10:06 AM, VVTi said:

Where you are, you need a BIG tsunami...

LOL yeah...still you should see my parents panicking,dads near the mgs wondering wether he should take them to a higher ground.

[MkX]

Just got a twitter update saying Southern High way is open for general pubilc for free as Galle road going to be closed for sequirity reasosn. FYI just verify the news and use it. Be safe.