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Under the influence of a [[Trough (meteorology)|trough]], a [[low pressure area]] formed over the Bay of Bengal on 14 May.<ref>{{cite web|title=Tropical Weather Outlook|url=http://www.webcitation.org/6hV9PzVIr|publisher=India Meteorological Department|accessdate=14 May 2016}}</ref><ref>{{cite web|title=All India Weather Summary and Forecast Bulletin, Night of 14 May 2016.|url=http://www.webcitation.org/6hVA8VqTr|publisher=India Meteorological Department|accessdate=14 May 2016}}</ref> It slowly consolidated, prompting the IMD to classify it as a depression on 17 May.<ref>{{cite web|last1=Yadav|first1=B. P.|title=Special Tropical Outlook for the North Indian Ocean issued at 0600 UTC of 17 May 2016.|url=http://www.webcitation.org/6hZRmc019|publisher=India Meteorological Department|accessdate=17 May 2016}}</ref> By the late hours of 17 May, a [[tropical cyclone formation alert]] (TCFA) was issued, following which the system was upgraded to tropical storm intensity by the JTWC.<ref>{{cite web|title=Current Significant Tropical Weather Advisories ABIO10 (Indian Ocean) reissued at 18 May 2016, 0030 UTC|url=http://www.webcitation.org/6haRFWdIA|publisher=Joint Typhoon Warning Center|accessdate=18 May 2016}}</ref><ref>{{cite web|title=Tropical Cyclone 01B (One) Warning #01 Issued on 18 May 2016 at 0900 UTC.|url=http://www.webcitation.org/6haqbSLdl|publisher=Joint Typhoon Warning Center|accessdate=18 May 2016}}</ref> The next day, the IMD upgraded the storm to a Deep Depression, prompting the issuance of cyclone warnings for the states of [[Andhra Pradesh]] and [[Odisha]].<ref>{{cite web|author1=B.P. Yadav|title=Deep Depression BOB 01 Warning Bulletin 5 issued on 18 May 2016.|url=http://www.webcitation.org/6hapikrpr|publisher=India Meteorological Department|accessdate=18 May 2016|archivedate=18 May 2016|page=1|date=18 May 2016}}</ref> On 19 May, the IMD reported that the storm had reached cyclonic storm intensity, naming it ''Roanu''.<ref>{{cite web|last1=Kotal|first1=S. D.|title=Cyclonic Storm Roanu, Bulletin No. 9 issued at 0300 UTC, 19 May 2016.|url=http://www.webcitation.org/6hc5E0Bae|publisher=India Meteorological Department|accessdate=19 May 2016}}</ref> The cyclone drifted in a northeastward track and continued to gain intensity until persistent wind shear and its proximity to land eventually caused it to start weakening on the same day.<ref>{{cite web|title=TROPICAL CYCLONE 01B (ROANU) WARNING NR 006|url=http://www.webcitation.org/6hchYgw2Y|publisher=Joint Typhoon Warning Centre|accessdate=19 May 2016}}</ref><ref>{{cite web|title=TROPICAL CYCLONE 01B (ROANU) WARNING NR 007|url=http://www.webcitation.org/6hd2OkFGR|publisher=Joint Typhoon Warning Centre|accessdate=19 May 2016}}</ref> However, the wind shear soon decreased, and Roanu reintensified as deep convection became established over and around the [[Eye (cyclone)|low-level circulation center]].<ref>{{cite web|title=Tropical Cyclone 01B (Roanu) Warning #07|url=http://www.webcitation.org/6hd2OkFGR|publisher=Joint Typhoon Warning Centre|accessdate=19 May 2016}}</ref><ref>{{cite web|title=Tropical Cyclone 01B (Roanu) Warning #08|url=http://www.webcitation.org/6hdfO0w9O|publisher=Joint Typhoon Warning Center|accessdate=20 May 2016}}</ref> Moving generally east-northeastwards, the storm made landfall near [[Chittagong]], [[Bangladesh]] on May 21, upon which it rapidly weakened.<ref>{{cite web|last1=Mohapatra|first1=M|title=Tropical Storm Roanu Advisory No. 16 issued at 1500 UTC of 21 May 2016.|url=http://www.webcitation.org/6hfwEkzJ6|publisher=India Meteorological Department|accessdate=21 May 2016}}</ref>
Under the influence of a [[Trough (meteorology)|trough]], a [[low pressure area]] formed over the Bay of Bengal on 14 May.<ref>{{cite web|title=Tropical Weather Outlook |url=http://www.rsmcnewdelhi.imd.gov.in/images/bulletin/rsmc.pdf |publisher=India Meteorological Department |accessdate=14 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hV9PzVIr |archivedate=14 May 2016 }}</ref><ref>{{cite web|title=All India Weather Summary and Forecast Bulletin, Night of 14 May 2016. |url=http://imd.gov.in/section/nhac/dynamic/allindianew.pdf |publisher=India Meteorological Department |accessdate=14 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hVA8VqTr |archivedate=14 May 2016 }}</ref> It slowly consolidated, prompting the IMD to classify it as a depression on 17 May.<ref>{{cite web|last1=Yadav |first1=B. P. |title=Special Tropical Outlook for the North Indian Ocean issued at 0600 UTC of 17 May 2016. |url=http://www.rsmcnewdelhi.imd.gov.in/images/bulletin/rsmc.pdf |publisher=India Meteorological Department |accessdate=17 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hZRmc019 |archivedate=17 May 2016 }}</ref> By the late hours of 17 May, a [[tropical cyclone formation alert]] (TCFA) was issued, following which the system was upgraded to tropical storm intensity by the JTWC.<ref>{{cite web|title=Current Significant Tropical Weather Advisories ABIO10 (Indian Ocean) reissued at 18 May 2016, 0030 UTC |url=http://gwydir.demon.co.uk/advisories/ABIO10-PGTW_201605180030.htm |publisher=Joint Typhoon Warning Center |accessdate=18 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6haRFWdIA |archivedate=18 May 2016 }}</ref><ref>{{cite web|title=Tropical Cyclone 01B (One) Warning #01 Issued on 18 May 2016 at 0900 UTC. |url=http://weather.noaa.gov/pub/data/raw/wt/wtio51.pgtw..txt |publisher=Joint Typhoon Warning Center |accessdate=18 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6haqbSLdl |archivedate=18 May 2016 }}</ref> The next day, the IMD upgraded the storm to a Deep Depression, prompting the issuance of cyclone warnings for the states of [[Andhra Pradesh]] and [[Odisha]].<ref>{{cite web|author1=B.P. Yadav |title=Deep Depression BOB 01 Warning Bulletin 5 issued on 18 May 2016. |url=http://www.rsmcnewdelhi.imd.gov.in/images/cyclone_pdfs/indian_1463580122.pdf |publisher=India Meteorological Department |accessdate=18 May 2016 |archivedate=18 May 2016 |page=1 |date=18 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hapikrpr }}</ref> On 19 May, the IMD reported that the storm had reached cyclonic storm intensity, naming it ''Roanu''.<ref>{{cite web|last1=Kotal |first1=S. D. |title=Cyclonic Storm Roanu, Bulletin No. 9 issued at 0300 UTC, 19 May 2016. |url=http://www.rsmcnewdelhi.imd.gov.in/images/bulletin/indian.pdf |publisher=India Meteorological Department |accessdate=19 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hc5E0Bae |archivedate=19 May 2016 }}</ref> The cyclone drifted in a northeastward track and continued to gain intensity until persistent wind shear and its proximity to land eventually caused it to start weakening on the same day.<ref>{{cite web|title=TROPICAL CYCLONE 01B (ROANU) WARNING NR 006 |url=http://weather.noaa.gov/pub/data/raw/wt/wtio31.pgtw..txt |publisher=Joint Typhoon Warning Centre |accessdate=19 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hchYgw2Y |archivedate=19 May 2016 }}</ref><ref>{{cite web|title=TROPICAL CYCLONE 01B (ROANU) WARNING NR 007 |url=http://weather.noaa.gov/pub/data/raw/wt/wtio31.pgtw..txt |publisher=Joint Typhoon Warning Centre |accessdate=19 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hd2OkFGR |archivedate=19 May 2016 }}</ref> However, the wind shear soon decreased, and Roanu reintensified as deep convection became established over and around the [[Eye (cyclone)|low-level circulation center]].<ref>{{cite web|title=Tropical Cyclone 01B (Roanu) Warning #07 |url=http://weather.noaa.gov/pub/data/raw/wt/wtio31.pgtw..txt |publisher=Joint Typhoon Warning Centre |accessdate=19 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hd2OkFGR |archivedate=19 May 2016 }}</ref><ref>{{cite web|title=Tropical Cyclone 01B (Roanu) Warning #08 |url=http://weather.noaa.gov/pub/data/raw/wt/wtio31.pgtw..txt |publisher=Joint Typhoon Warning Center |accessdate=20 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hdfO0w9O |archivedate=20 May 2016 }}</ref> Moving generally east-northeastwards, the storm made landfall near [[Chittagong]], [[Bangladesh]] on May 21, upon which it rapidly weakened.<ref>{{cite web|last1=Mohapatra |first1=M |title=Tropical Storm Roanu Advisory No. 16 issued at 1500 UTC of 21 May 2016. |url=http://www.rsmcnewdelhi.imd.gov.in/images/bulletin/rsmc.pdf |publisher=India Meteorological Department |accessdate=21 May 2016 |deadurl=unfit |archiveurl=http://www.webcitation.org/6hfwEkzJ6 |archivedate=21 May 2016 }}</ref>
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Revision as of 03:51, 6 July 2016

2016 North Indian Ocean cyclone season
Season summary map
Seasonal boundaries
First system formed17 May 2016
Last system dissipatedSeason ongoing
Strongest storm
NameRoanu
 • Maximum winds85 km/h (50 mph)
(3-minute sustained)
 • Lowest pressure983 hPa (mbar)
Seasonal statistics
Depressions2
Deep depressions1
Cyclonic storms1
Total fatalities227 total
Total damage$1.7 billion (2016 USD)
North Indian Ocean tropical cyclone seasons
2014, 2015, 2016, 2017, 2018

The 2016 North Indian Ocean cyclone season is a current event in the annual cycle of tropical cyclone formation. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with the peak from May to November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean.

The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula. There are two main seas in the North Indian Ocean — the Arabian Sea to the west of the Indian subcontinent, abbreviated ARB by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated BOB by the IMD.

The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. On average, three to four cyclonic storms form in this basin every season.[1]

Season summary

Cyclone Roanu

The season officially started with the formation of Cyclone Roanu over in the Bay of Bengal on 17 May.

Storms

Cyclonic Storm Roanu

Main article: Cyclone Roanu
Cyclonic storm (IMD)
Tropical storm (SSHWS)
 
Duration17 May – 22 May
Peak intensity85 km/h (50 mph) (3-min);
983 hPa (mbar)

Under the influence of a trough, a low pressure area formed over the Bay of Bengal on 14 May.[2][3] It slowly consolidated, prompting the IMD to classify it as a depression on 17 May.[4] By the late hours of 17 May, a tropical cyclone formation alert (TCFA) was issued, following which the system was upgraded to tropical storm intensity by the JTWC.[5][6] The next day, the IMD upgraded the storm to a Deep Depression, prompting the issuance of cyclone warnings for the states of Andhra Pradesh and Odisha.[7] On 19 May, the IMD reported that the storm had reached cyclonic storm intensity, naming it Roanu.[8] The cyclone drifted in a northeastward track and continued to gain intensity until persistent wind shear and its proximity to land eventually caused it to start weakening on the same day.[9][10] However, the wind shear soon decreased, and Roanu reintensified as deep convection became established over and around the low-level circulation center.[11][12] Moving generally east-northeastwards, the storm made landfall near Chittagong, Bangladesh on May 21, upon which it rapidly weakened.[13]

Depression ARB 01

Depression (IMD)
Tropical storm (SSHWS)
 
Duration27 June – 29 June
Peak intensity45 km/h (30 mph) (3-min);
993 hPa (mbar)

On 27 June, a low pressure system intensified into a depression, the first of the season in the Arabian Sea.

Storm names

Within this basin, a tropical cyclone is assigned a name when it is judged to have reached Cyclonic Storm intensity with winds of 65 km/h (40 mph). The names were selected by members of the ESCAP/WMO panel on Tropical Cyclones between 2000 and May 2004, before the Regional Specialized Meteorological Center in New Delhi started to assign names in September 2004. There is no retirement of tropical cyclone names in this basin as the list of names is only scheduled to be used once before a new list of names is drawn up. Should a named tropical cyclone move into the basin from the Western Pacific, then it will retain its original name. The next six available names from the List of North Indian Ocean storm names are below.

  • Nada (unused)
  • Vardah (unused)
  • Maarutha (unused)
  • Mora (unused)

Season effects

This is a table of all storms in the 2016 North Indian Ocean cyclone season. It mentions all of the season's storms and their names, duration, peak intensities (according to the IMD storm scale), damage, and death totals. Damage and death totals include the damage and deaths caused when that storm was a precursor wave or extratropical low, and all of the damage figures are in 2016 USD.

Name Dates Peak intensity Areas affected Damage
(USD) 		Deaths Refs
Category Wind speed Pressure
Roanu 17 – 22 May Cyclonic storm 85 km/h (50 mph) 983 hPa (29.03 inHg) Sri Lanka, Eastern coast of India, Bangladesh, Myanmar $1.7 billion 227 [14][15]
ARB 01 27 – 29 June Depression 45 km/h (30 mph) 993 hPa (29.32 inHg) Oman None None
Season aggregates
2 systems 17 May – present 85 km/h (50 mph) 983 hPa (29.03 inHg) $1.7 billion 227

See also

Wikimedia Commons has media related to 2016 North Indian Ocean cyclone season.

References

  1. ^ "Annual Frequency of Cyclonic Disturbances (Maximum Wind Speed of 17 Knots or More), Cyclones (34 Knots or More) and Severe Cyclones (48 Knots or More) Over the Bay of Bengal (BOB), Arabian Sea (AS) and Land Surface of India" (PDF). India Meteorological Department. Retrieved 30 October 2015.
  2. ^ "Tropical Weather Outlook". India Meteorological Department. Archived from the original (PDF) on 14 May 2016. Retrieved 14 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  3. ^ "All India Weather Summary and Forecast Bulletin, Night of 14 May 2016". India Meteorological Department. Archived from the original (PDF) on 14 May 2016. Retrieved 14 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  4. ^ Yadav, B. P. "Special Tropical Outlook for the North Indian Ocean issued at 0600 UTC of 17 May 2016". India Meteorological Department. Archived from the original (PDF) on 17 May 2016. Retrieved 17 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  5. ^ "Current Significant Tropical Weather Advisories ABIO10 (Indian Ocean) reissued at 18 May 2016, 0030 UTC". Joint Typhoon Warning Center. Archived from the original on 18 May 2016. Retrieved 18 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  6. ^ "Tropical Cyclone 01B (One) Warning #01 Issued on 18 May 2016 at 0900 UTC". Joint Typhoon Warning Center. Archived from the original on 18 May 2016. Retrieved 18 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  7. ^ B.P. Yadav (18 May 2016). "Deep Depression BOB 01 Warning Bulletin 5 issued on 18 May 2016". India Meteorological Department. p. 1. Archived from the original (PDF) on 18 May 2016. Retrieved 18 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  8. ^ Kotal, S. D. "Cyclonic Storm Roanu, Bulletin No. 9 issued at 0300 UTC, 19 May 2016". India Meteorological Department. Archived from the original (PDF) on 19 May 2016. Retrieved 19 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  9. ^ "TROPICAL CYCLONE 01B (ROANU) WARNING NR 006". Joint Typhoon Warning Centre. Archived from the original on 19 May 2016. Retrieved 19 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  10. ^ "TROPICAL CYCLONE 01B (ROANU) WARNING NR 007". Joint Typhoon Warning Centre. Archived from the original on 19 May 2016. Retrieved 19 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  11. ^ "Tropical Cyclone 01B (Roanu) Warning #07". Joint Typhoon Warning Centre. Archived from the original on 19 May 2016. Retrieved 19 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  12. ^ "Tropical Cyclone 01B (Roanu) Warning #08". Joint Typhoon Warning Center. Archived from the original on 20 May 2016. Retrieved 20 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  13. ^ Mohapatra, M. "Tropical Storm Roanu Advisory No. 16 issued at 1500 UTC of 21 May 2016". India Meteorological Department. Archived from the original (PDF) on 21 May 2016. Retrieved 21 May 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  14. ^ "Sri Lanka finds more landslide fatalities, warns of flood-triggered health crisis". The Japan Times. AFP-JIJI. Retrieved 23 May 2016.
  15. ^ "Bangladesh avoids high death toll with cyclone evacuation". The New Indian Express. 23 May 2016. Retrieved 23 May 2016.
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