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|location=12.0°N, 92.0°E<br/>{{convert|80|km|abbr=on}} WNW of [[Port Blair]], [[India]]
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====Current Storm Information====
====Current Storm Information====
As of 2330 IST (1800 UTC), 24 November 2013, Cyclonic Storm Lehar was located near [[latitude]] 11.5°N and [[longitude]] 93.0°E, about {{convert|40|km|abbr=on}} east-southeast of [[Port Blair]], [[India]]. The system is forecasted to move west-northwestwards, intensify further and cross the Andaman and Nicobar Islands close to Port Blair around early morning of 25 November. It will then emerge into southeast Bay of Bengal and intensify into a Very Severe Cyclonic Storm in the next 24 hours, track west-northwestwards and cross Andhra Pradesh coast between Machilipatnam and Kalingapatnam near Kakinada around noon of 28 November. Maximum sustained 3-minute wind speeds are estimated at {{convert|75|km/h|abbr=on}}, gusting to {{convert|95|km/h|abbr=on}}. Minimum central pressure is estimated at {{convert|996|mbar|inHg|abbr=on}}. [[Dvorak technique|Dvorak intensity]] of the storm is T3.0.
As of 0830 IST (0300 UTC), 25 November 2013, Severe Cyclonic Storm Lehar was located near [[latitude]] 12.0°N and [[longitude]] 92.0°E, about {{convert|80|km|abbr=on}} west-northwest of [[Port Blair]], {{convert|1250|km|abbr=on}} east-southeast of [[Machilipatnam]], {{convert|1180|km|abbr=on}} east-southeast of [[Kakinada]] and {{convert|1100|km|abbr=on}} southeast of [[Kalingapatnam]]]. The system is forecasted to intensify further into a Very Severe Cyclonic Storm in the next 24 hours, track west-northwestwards and cross Andhra Pradesh coast between Machilipatnam and Kalingapatnam near Kakinada around noon of 28 November. Maximum sustained 3-minute wind speeds are estimated at {{convert|100|km/h|abbr=on}}, gusting to {{convert|120|km/h|abbr=on}}. Minimum central pressure is estimated at {{convert|990|mbar|inHg|abbr=on}}. [[Dvorak technique|Dvorak intensity]] of the storm is T3.5.

This system is expected to make landfall close to [[Kakinada]]. Kakinada is in the Coastal Andhra region which has already been hit twice by two cyclones, Phailin and Helen.<ref>{{cite web|title=After Helen, Andhra braces for super cyclone Lehar|url=http://timesofindia.indiatimes.com/india/After-Helen-Andhra-braces-for-super-cyclone-Lehar/articleshow/26315203.cms|publisher=The Times of India|accessdate=24 November 2013}}</ref>


For more latest official information on this storm, click through the links below:
For more latest official information on this storm, click through the links below:

Revision as of 07:58, 25 November 2013

2013 North Indian Ocean cyclone season
Season summary map
Seasonal boundaries
First system formedMay 10, 2013
Last system dissipatedCurrently active
Strongest storm
NamePhailin
 • Maximum winds215 km/h (130 mph)
(3-minute sustained)
 • Lowest pressure940 hPa (mbar)
Seasonal statistics
Depressions9
Deep depressions5
Cyclonic storms4
Severe cyclonic storms2
Very severe cyclonic storms1
Total fatalitiesAt least 480 total
Total damageAt least $702.14 million (2013 USD)
North Indian Ocean tropical cyclone seasons
2011, 2012, 2013, Post-2013

The 2013 North Indian Ocean cyclone season is an ongoing 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, 4 to 6 storms form in this basin every season.[1]

Season summary

Cyclone Helen (2013)Cyclone PhailinCyclone Mahasen

Storms

Cyclonic Storm Mahasen

Cyclonic storm (IMD)
Tropical storm (SSHWS)
 
DurationMay 10 – May 17
Peak intensity85 km/h (50 mph) (3-min);
990 hPa (mbar)

Originating from an area of low pressure over the southern Bay of Bengal in early May 2013, Mahasen slowly consolidated into a depression on May 10.[2] The depression gained forward momentum and attained gale-force winds on May 11 and was designated as Cyclonic Storm Mahasen, the first named storm of the season.[3] Owing to adverse atmospheric conditions, the depression struggled to maintain organized convection as it moved closer to eastern India.[4] On May 14, the exposed circulation of Mahasen turned northeastward.[5] The following day, conditions again allowed for the storm to intensify. Early on May 16, the cyclone attained its peak intensity with winds of 85 km/h (50 mph) and a barometric pressure of 990 mbar (hPa; 29.18 inHg).[6] Shortly thereafter Mahasen made landfall near Chittagong, Bangladesh.[7] On May 17, it moved over the eastern Indian state of Nagaland.[8]

Early in the storm's existence, it brought flooding rains to much of northwestern Indonesia, resulting in significant damage. At least four people died and six others were reported missing.[9][10] In preparation for the storm, large-scale evacuations were recommended for parts of Myanmar. This resulted with people overcrowding boats to escape, and one or several vessels capsized, causing at least 39 deaths; 42 people were rescued while 19 others were unaccounted for and feared dead.[11][12] The storm's expansive cloud mass also brought unsettled weather to Sri Lanka, Thailand, and southeastern India. Severe storms in India and Sri Lanka were responsible for at least 16 fatalities and significant damage;[13][14] one person died in Thailand.[15] Striking Bangladesh in a weaker state than initially expected, damage was moderate to severe. A total of 95,003 poorly constructed huts were damaged or destroyed, 17 people died, and nearly 1.3 million were affected across the country.[16][17] Losses to crops exceeded 400 million (US$5.14 million).[18] Myanmar was spared damage and further casualties.[19]

Depression BOB 02

Depression (IMD)
 
DurationMay 29 – May 31
Peak intensity45 km/h (30 mph) (3-min);
990 hPa (mbar)

An upper air cyclonic circulation developed into a low pressure area on 28 May. It slowly organized itself, and favorable conditions led to the intensification of the low pressure area to a depression by the early hours of 29 May.[20] Slightly intensifying thereafter, the storm took a northward track and crossed the West Bengal coast in the evening hours of the same day, with peak winds of 45 km/h (28 mph).[21] The depression attained its minimum central pressure of 990 mbar (29 inHg) on 30 May. Staying almost a day inland maintaining depression strength, it weakened gradually and dissipated over the states of Bihar and Jharkhand in the evening hours of 31 May due to land interaction and reduced moisture availability.[22] Contai in West Bengal recorded 260 mm rainfall in 24 hrs on 30 May 2013.[23]

Depression BOB 03

Depression (IMD)
 
DurationJuly 30 – August 1
Peak intensity45 km/h (30 mph) (3-min);
990 hPa (mbar)

A low pressure area formed over the Bay of Bengal on July 29. It intensified gradually, and the IMD classified the storm as a Depression in the early hours of July 30. The system made landfall between Balasore, Odisha and Digha, West Bengal by the same evening at peak winds of 45 km/h (28 mph) and a minimum central pressure of 990 mbar (990 hPa). Spending an entire day inland, the depression weakened into a well-marked low pressure area on August 1 over the state of Madhya Pradesh in India.[24]

The storm's precursor brought heavy rainfall to coastal Bangladesh. 30,000 people were marooned as a result of the following severe floods in Kalapara Upazila.[25] In India, a Storm Warning Signal-3 was hoisted in the ports of Odisha, and fishermen were cautioned against venturing into the sea.[26] Chicholi in Madhya Pradesh recorded 280 mm rainfall in 24 hrs on 1 August 2013.[27]

Land Depression 01

Depression (IMD)
 
DurationAugust 20 – August 23
Peak intensity45 km/h (30 mph) (3-min);
990 hPa (mbar)

A monsoonal low pressure area formed over the Bay of Bengal on August 16. It gradually intensified, organizing itself into a Depression in the early hours of August 20 over coastal West Bengal and adjoining northern Odisha and Jharkhand. Over the next few days, the storm moved west-northwestward, before weakening into a well-marked low pressure area on August 23.

The depression brought heavy rainfall to coastal West Bengal. Kolkata received 206 mm (8.1 in) of rainfall over a span of three days, the wettest spell of the monsoon season, causing inundated streets. At least four people are reported to be killed across the state due to rain-related events.[28] The system's precursor low caused authorities to raise cautionary signal number 3, at all maritime ports of Bangladesh.[29] Between August 21–23 (72 hrs),Pachmarhi in Madhya Pradesh recorded 500 mm rainfall from the Depression.[30]

Very Severe Cyclonic Storm Phailin

Extremely severe cyclonic storm (IMD)
Category 5 tropical cyclone (SSHWS)
 
DurationOctober 8 (Entered basin on Oct. 6) – October 14
Peak intensity215 km/h (130 mph) (3-min);
940 hPa (mbar)

A tropical depression formed along the Gulf of Thailand on October 4. The tropical depression degenerated to a remnant low on October 6, as it crossed the 100th meridian on October 7.[31] Under the influence of an upper air cyclonic circulation, it regenerated to a low pressure area over the Andaman Sea and adjoining Tanintharyi region. It slowly organized itself and consolidated into a depression on October 8, followed by the Joint Typhoon Warning Center (JTWC) issuing a Tropical Cyclone Formation Alert (TCFA) the same day.[32][33] In the early hours of 9 October the JTWC upgraded the storm to a tropical cyclone.[34] The same day, the IMD upgraded the storm to a deep depression, and subsequently a cyclonic storm, naming it Phailin. Rapid intensification ensued, and Phailin strengthened into a Very Severe Cyclonic storm on October 10, followed by the JTWC upgrading the storm to a strong Category 4 status. Continuing its rapid intensification, the storm reached Category 5 status the following day, the first in the North Indian Ocean since Cyclone Sidr in 2007.[35] Shortly before landfall, Phailin began another eyewall replacement cycle which led to slight weakening, and the system jumped back to Category 4 status.[36] Maintaining intensity, the storm made landfall close to Gopalpur, Odisha in the evening hours of October 12.[37] Phailin rapidly weakened as it tracked over rugged terrain, eventually dissipating into a well marked low pressure area over the state of Bihar on October 14.[38]

The cyclone prompted India's biggest evacuation in 23 years with more than 550,000 people moving up from the coastline in Odisha and Andhra Pradesh to safer places.[39] 44 deaths related to the cyclone have been reported.[40]

Deep Depression ARB 01

Deep depression (IMD)
Tropical storm (SSHWS)
 
DurationNovember 8 – November 11
Peak intensity55 km/h (35 mph) (3-min);
1002 hPa (mbar)

In early November, a low pressure area formed over the Arabian Sea. It slowly moved westwards and consolidated into Depression ARB 01 on November 8.[41] The JTWC issued a Tropical Cyclone Formation Alert the same day, reporting that the depression was moving into an area favorable for further intensification.[42] The next morning, the IMD upgraded the storm to a deep depression; the JTWC similarly upgraded the system to a tropical storm following reports of 65 km/h (40 mph) winds near the storm's center of circluation.[43][44] Remaining stationary for nearly a day, the storm crossed the coast of Somalia early on 11 November.[45] The system rapidly deteriorated due to land interaction, and both the JTWC and the IMD issued their final warnings on the system later that day.[46]

ARB 01 made landfall in the northeastern Puntland region on 9 November,[47] and dissipated by the 11th.[48] Around 300 fatalities were reported in the wake of the storm, as well as livestock casualties and demolished infrastructure. Much of the damage was averted by an early administrative response overseen by the Puntland Disaster Management and Rescue committee, which coordinated relief efforts by the Puntland Maritime Police Force, governmental rescue teams, and the Puntland Highway Authority.[49] According to the International Disaster Database (EM-DAT), the cyclone is tied with the Tropical Cyclone ARB04 of 1994 as Somalia's deadliest cyclone.[50]

Depression BOB 05

Depression (IMD)
Tropical storm (SSHWS)
 
DurationNovember 13 – November 16
Peak intensity45 km/h (30 mph) (3-min);
1003 hPa (mbar)

On November 8, the remnants of Tropical Depression 30W (Wilma) crossed the Malay Peninsula, and emerged into the eastern Bay of Bengal.[51] During the next several days, the system drifted towards the west while weakening further. On November 12, the system began to reorganize gradually, while continuing to move westwards. On November 13, the system was classified as a depression by the IMD, and given the identifier BOB 05.[52] The depression maintained its intensity despite passing through an environment unfavorable for intensification, and was re-upgraded to tropical cyclone intensity by the JTWC on 15 November.[53] Shortly before landfall, the system weakened due to land interaction, and the JTWC issued its final warning.[54] On November 16, BOB 05 made landfall near Nagapattinam, Tamil Nadu, and the system quickly began to weaken. Later on November 16, the IMD issued its final advisory on Depression BOB 05, as the system weakened into a well-marked area of low pressure.[55] Over the next several hours, the remnant low of BOB 05 moved across the central part of Southern India, and the system continued to weaken. During the next several days, BOB 05 moved westwards across the Arabian Sea as a convectionless low. Later, the remnants of BOB 05 redeveloped a little bit of convection, while continuing to moved westwards. Late on November 21, the remnants of BOB 05 turned to the southwest, affecting Socotra Island on November 22. Early on November 23, the remnants of Depression BOB 05 dissipated just south of Socotra Island.

Heavy rains along with 60-km wind speed lashed many parts of the state of Tamil Nadu. Mayiladuthurai, a town in Nagapattinam district, experienced the highest rainfall, amounting to 220 mm.[56] 13 people were killed as the Depression crossed the state's coast.[57]

Severe Cyclonic Storm Helen

Severe cyclonic storm (IMD)
Tropical storm (SSHWS)
DurationNovember 19 – November 23
Peak intensity100 km/h (65 mph) (3-min);
990 hPa (mbar)

Late on November 17, the remnant energy of Tropical Storm Podul contributed to the development of a trough over the Bay of Bengal, located near the Andaman Islands. During the next couple of days, the storm slowly organized and consolidated, prompting the Joint Typhoon Warning Center (JTWC) to issue a Tropical cyclone formation alert (TCFA) during the early hours of November 19.[58] Later on the same day, the India Meteorological Department (IMD) upgraded the storm to a depression, classifying it as BOB 06,[59] followed by the JTWC reporting that the storm had reached Tropical Storm strength.[60] A couple of hours later, the IMD upgraded BOB 06 into a Deep Depression, as the storm continued to intensify.[61]

The storm slowly drifted west-northwestward while deep convection consolidated around the system's well-defined center of circulation.[62] In the early hours of November 20, the IMD classified BOB 06 as a Cyclonic Storm, thereby officially naming it Helen.[63] Helen continued to intensify into a Severe Cyclonic Storm the following day, reaching its peak intensity of 100 km/h (62 mph) with a central pressure of 990 mbar (29 inHg). Shortly before landfall, the storm's convection sheared to the north, causing its low level circulation to fully expose followed by the JTWC issuing its final bulletin, reporting that the storm had weakened due to land interaction.[64] Helen made landfall south of Machilipatnam, Andhra Pradesh and rapidly deteriorated into a deep depression.[65][66] It was last noted as a low pressure area on November 23. A total of 11 deaths have been reported in incidents related to the cyclone.[67][68]

Cyclonic Storm Lehar

Template:Infobox indian current

A low pressure area formed over the South China Sea on 18 November. On November 23, it crossed to Andaman Sea and gradually intensified, and the JTWC classified the system as a tropical depression on November 23. Later on the same day, the storm was upgraded into Depression BOB 07 by the IMD, while the JTWC upgraded the system into a tropical storm.[69] The following day, the storm strengthened further into a cyclonic storm, and the IMD assigned it the name Lehar.[70]

Current Storm Information

As of 0830 IST (0300 UTC), 25 November 2013, Severe Cyclonic Storm Lehar was located near latitude 12.0°N and longitude 92.0°E, about 80 km (50 mi) west-northwest of Port Blair, 1,250 km (780 mi) east-southeast of Machilipatnam, 1,180 km (730 mi) east-southeast of Kakinada and 1,100 km (680 mi) southeast of Kalingapatnam]. The system is forecasted to intensify further into a Very Severe Cyclonic Storm in the next 24 hours, track west-northwestwards and cross Andhra Pradesh coast between Machilipatnam and Kalingapatnam near Kakinada around noon of 28 November. Maximum sustained 3-minute wind speeds are estimated at 100 km/h (62 mph), gusting to 120 km/h (75 mph). Minimum central pressure is estimated at 990 mbar (29 inHg). Dvorak intensity of the storm is T3.5.

For more latest official information on this storm, click through the links below:

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 since 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.

  • Madi (unused)
  • Na−nauk (unused)

Season effects

This is a table of all storms in the 2013 North Indian Ocean cyclone season. It mentions all of the season's storms and their names, durations, peak intensities (according to the IMD storm scale), landfall(s) – denoted by bold location names – damages, 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 2013 USD.

Name Dates Peak intensity Areas affected Damage
(USD)
Deaths Refs
Category Wind speed Pressure
Mahasen May 10 – 17 Cyclonic Storm 85 km/h (50 mph) 990 hPa (29.23 inHg) Indonesia, Thailand, Sri Lanka, India, Bangladesh, Myanmar >$5.14 million 107
BOB 02 May 29 – 31 Depression 45 km/h (30 mph) 990 hPa (29.23 inHg) Bangladesh, India None None
BOB 03 July 30 – August 1 Depression 45 km/h (30 mph) 990 hPa (29.23 inHg) Bangladesh, India None None
LAND 01 August 20 – 23 Depression 45 km/h (30 mph) 990 hPa (29.23 inHg) India None 4
Phailin October 8 – 14 Very Severe Cyclonic Storm 215 km/h (130 mph) 940 hPa (27.76 inHg) Malay Peninsula, Andaman and Nicobar Islands, India $696 million 45
ARB 01 November 8 – 11 Deep Depression 55 km/h (35 mph) 1002 hPa (29.59 inHg) Somalia, Ethiopia $1 million >300 [71]
BOB 05 November 13 – 16 Depression 45 km/h (30 mph) 1003 hPa (29.62 inHg) Malay Peninsula, Myanmar, Southern India, Sri Lanka, Socotra Island None 13
Helen November 19 – 23 Severe Cyclonic Storm 100 km/h (65 mph) 990 hPa (29.23 inHg) India None 11
Lehar November 23 – Currently active Cyclonic storm 75 km/h (45 mph) 996 hPa (29.41 inHg) Malay Peninsula, Andaman and Nicobar Islands None None
Season aggregates
9 systems May 10 – Currently active 215 km/h (130 mph) 940 hPa (27.76 inHg) >702.14 million >480

See also

References

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  3. ^ India Meteorological Department (May 11, 2013). "Cyclone Mahasen over southeastern Bay of Bengal, CWIND Bulletin 5". India Meteorological Department. Retrieved May 11, 2013.
  4. ^ Joint Typhoon Warning Center (May 12, 2013). "Tropical Cyclone 01B (Mahasen) Warning Nr 008". United States Navy. Retrieved May 12, 2013.
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