Bay of Bengal warming up for a showdown?

‘100% chance of depression in the Bay!’

Strong weather system near Malay Penninsula

The Bay of Bengal for the first time ever in this year is getting all warmed up for an event that could be a cause of worry for the residents of eastern India, and maybe for Bangladesh. A tropical cyclone could form in the central Bay of Bengal during the last week of October while it’s formation has already started. Apart from this storm, on October 10, a depression BOB 01 formed in the Bay of Bengal that brought flooding rain with high winds to Bangladesh. The tropical activity of 2012 in the north Indian Ocean has been the lowest since many years.

‘Murjan’ could bring 65 km/h winds!

An upper air cyclonic circulation has already formed over the Andaman sea near Myanmar, it could intensify into a low pressure area on October 24 or October 25 and could intensify into cyclonic storm (40 mph – 65 km/h winds) with lowest pressure shown by chart at 1000 mbar/996 mbar during the last week of October. Below is the possible track of the storm that have been showed by numerous models;

  • North-North-West: Bangladesh
  • North-West: West Bengal and adjoining Bangladesh.
  • West-North-West: Orissa.
  • West-South-West: Towards upper Srilanka and adjoining Tamil Nadu.
  • West: Towards Andra Pradesh and adjoining Orissa.

It is not clear at which direction this weather system would head but after landfall it will surely move in a North-eastern direction. Landfall is expected on October 30/October 31 depending upon the track, it could change though.

What will be the name?

If the ‘expected’ cyclone does form, it would be given the following name;

  • Murjan – It is an Arab word given by Oman which means Corel.

Something also happening in other ‘sea’?

Meanwhile south-east Arabian sea has given brith to a low pressure that might intensify further into a well-marked low pressure area that would move towards horn of Africa as a remnant.

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16 thoughts on “Bay of Bengal warming up for a showdown?

  1. With regards to Arabian Sea system, JTWC issues first warning – Arabian Sea Erstwhile 95 B strengthens to 20 to 25 knots with sea level pressure of 1004 MB

    AN AREA OF CONVECTION HAS PERSISTED NEAR 10.2N 68.3E, APPROXIMATELY 1030 NM EAST OF CAPE GUARDAFUI, SOMALIA. ANIMATED MULTISPECTRAL SATELLITE IMAGERY AND A 220144Z WINDSAT 37GHZ IMAGE DEPICT A VERY BROAD LOW LEVEL CIRCULATION CENTER (LLCC) WITH FRAGMENTED, CURVED DEEP CONVECTIVE BANDING WRAPPING INTO A POORLY DEFINED CENTER. A 211902Z OCEANSAT IMAGE SHOWS A WELL-DEFINED CIRCULATION WITH 15 TO 20 KNOT WINDS. THE LLCC IS LOCATED SOUTH OF THE SUBTROPICAL RIDGE AXIS AND IS UNDER DIFFLUENT EASTERLY FLOW WITH WEAK TO MODERATE (15-20 KNOTS) VERTICAL WIND SHEAR. THE DYNAMIC MODELS FORECAST SLOW DEVELOPMENT AS THE SYSTEM TRACKS WESTWARD. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 20 TO 25 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB. BASED ON THE BROAD LLCC AND LACK OF CONSOLIDATION EVIDENT IN RECENT TOTAL PRECIPITABLE WATER IMAGERY, THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS IS LOW.

  2. Second storm in 2012 in North Indian Ocean

    IMD names it ARB 01

    Latest satellite imagery indicates that a depression has formed over southeast and adjoining southwest and central Arabian Sea and lay centred at 0830 hrs IST of today, the 23rd October, 2012 near latitude 11.00N and longitude 65.0.0E, about 800 km west of Amini Divi (Lakshadweep). The system is likely to intensify further and move west-northwestwards towards Somalia and Yemen coast during next 72 hrs.

    http://www.imd.gov.in/section/nhac/dynamic/cwind.htm

  3. Bhabar Bhai,

    Depression intensifies into Deep Depression

    I think its time you put your alert

    ACCORDING TO SATELLITE IMAGERIES, THE INTENSITY OF THE SYSTEM IS T 2.0. THE LOWEST CLOUD TOP TEMPERATURE (CTT) IS ABOUT -790C. ASSOCIATED BROKEN INTENSE TO VERY INTENSE CONVECTION IS SEEN OVER THE ARABIAN SEA BETWEEN LAT 6.5ºN to 16.5ºN long 54.5ºE to 64.0ºE. CONVECTION IS MORE INTENSE IN THE SOUTHWEST SECTOR OF THE DEPRESSION. SUSTAINED MAXIMUM SURFACE WIND SPEED IS ESTIMATED TO BE ABOUT 30 KNOTS AROUND SYSTEM CENTRE. THE STATE OF THE SEA IS ROUGH TO VERY ROUGH AROUND THE SYSTEM CENTRE. THE ESTIMATED CENTRAL PRESSURE IS ABOUT 1002 HPA.

    http://www.imd.gov.in/section/nhac/dynamic/rsmc.pdf

      • You are right, even IMD agrees

        THE DEEP DEPRESSION OVER SOUTHWEST ARABIAN SEA MOVED WEST-SOUTHWESTWARDS AND LAY CENTRED AT 0300 UTC OF TODAY, THE 24THTH OCTOBER, 2012 NEAR LATITUDE 11.00N AND LONGITUDE 59.0.0E, ABOUT 1500 KM WEST OF AMINI DIVI (43311) AND 600 KM EAST-SOUTHEAST OF SOCOTRA ISLAND(41494). IT WOULD MOVE WEST-SOUTHWESTWARDS AND CROSS SOMALIA COAST BETWEEN LAT. 9.00 AND 10.50N AROUND 1800 UTC OF 25THTH OCTOBER 2012. HOWEVER, THE DEEP DEPRESSION MAY WEAKEN INTO A DEPRESSION DURING NEXT 24 HRS.

        http://www.imd.gov.in/section/nhac/dynamic/rsmc.pdf

    • Yes they are showing a depression moving towards Tamil Nadu and having a hard time intensifying, I think the culprit could be tropical storm ‘Son-Tinh’ in western Pacific ocean. Western disturbance over northern Pakistan and adjoining India should also be watched for changing the track of the BOB 02. Hope it brings rain to you guys 😀

  4. Cyclone Murjan update
    —————————
    UW – CIMSS – ADVANCED DVORAK TECHNIQUE

    Date : 24 OCT 2012
    Time : 150000 UTC
    Lat : 10:23:59 N
    Lon : 55:42:00 E
    T Intensity : 2.5
    MSLP: 1008.3
    Wind: 35 kts
    Mean Cloud Temperature – 48.85
    Centre Region Cloud Temperature – 29.86
    Weakening Flag : OFF
    Rapid Dissipation Flag : OFF

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