2014 North Indian Ocean cyclone season

Depression (IMD)
Tropical storm (SSHWS)
Duration	January 4 – January 7
Peak intensity	45 km/h (30 mph) (3-min)  1004 hPa (mbar)

Under the influence of an active Intertropical Convergence Zone (ITCZ), a low pressure system formed over the Bay of Bengal on January 2, slowly organizing as it moved into a favorable environment. A Tropical Cyclone Formation Alert (TCFA) was issued by the Joint Typhoon Warning Center (JTWC). On January 4, the India Meteorological Department (IMD) commenced its advisories on the storm, designating it Depression BOB 01, followed by the JTWC classifying the storm a tropical cyclone. The storm intensified a little further, before it made landfall over north Sri Lanka on January 6 and degenerating into a low pressure area during the following day.[3]

The storm brought moderate rainfall to northern Sri Lanka. On January 6, Vavuniya reported the highest amount of rainfall of 210 mm (8.3 in), followed by Puttalam, Anuradhapura and Trincomalee receiving 50 mm (2.0 in) each. The depression was the first storm in the North Indian Ocean to form in the month of January since Cyclonic Storm Hibaru in 2005.[3]

Depression (IMD)
Duration	May 21 – May 23
Peak intensity	45 km/h (30 mph) (3-min)  1000 hPa (mbar)

A low pressure area formed over the Bay of Bengal on May 19. It slowly consolidated, prompting IMD to classify it as a Depression on May 21, followed by JTWC issuing a Tropical Cyclone Formation Alert (TCFA) in the following hours.[4][5] Over the following day, the depression continued moving north-northeastwards towards an area of high vertical wind shear. The JTWC cancelled the TCFA issued for the system, stating that high wind shear had caused the convection to start dissipating.[6] The storm continued losing convection, until it weakened into a well-marked low pressure area on May 23.[7] The remnant system persisted for several more days, moving over the Indian state of Odisha late on May 25, before dissipating on the following day.[8]

The depression brought much-needed relief to Odisha which had been suffering from a heat wave that claimed at least 22 lives. Coastal areas previously reporting temperatures near 40 °C (104 °F) fell below 30 °C (86 °F) during the system's passage.[9] Heavy rains affected many areas, including 208 mm (8.2 in) at Bhawanipatna which experienced temperatures of 45 °C (113 °F) days earlier. The highest 24‑hour rainfall was 210 mm (8.3 in) in Baleswar.[10] Six districts were placed under a flood alert due to the rains.[9] A bridge near Hatadahi in the Rayagada district was swept away by flooding.[10]

Cyclonic storm (IMD)
Tropical storm (SSHWS)
Duration	June 10 – June 14
Peak intensity	85 km/h (50 mph) (3-min)  986 hPa (mbar)

Under the influence of an active southwest monsoon surge, a low pressure area formed over the Arabian Sea on June 9. It slowly organized, and was classified tropical storm 02A by the JTWC in the early hours of June 10. In the following hours, the IMD upgraded the storm to a depression and subsequently a deep depression, designating it "ARB 01". On June 11, the system was upgraded to Cyclonic Storm intensity and was named Nanauk by the IMD as it continued to intensify under favorable environmental conditions. The following day, Nanauk reached its peak intensity with a minimum central pressure of 986 hPa (29.12 inHg) and 3-minute sustained winds of 85 km/h (53 mph). As it tracked further northwestwards, the storm encountered moderate vertical wind shear, dry air and low sea surface temperatures, causing it to weaken rapidly into a Depression on June 13. A low-level steering flow deflected the storm to take a northward path, and the system was last noted as a well-marked low pressure area on June 14.[11]

Depression (IMD)
Duration	July 21 – July 23
Peak intensity	45 km/h (30 mph) (3-min)  988 hPa (mbar)

On July 19, an upper level cyclonic circulation lay over the north-eastern Bay of Bengal and parts of Gangetic West Bengal and Odisha.[2] Over the next day an area of low pressure formed, under the influence of this cyclonic circulation and rapidly concentrated into a Depression during July 21, over Odisha and West Bengal.[2] Over the next couple of days the system moved westwards, before it weakened into an area of low pressure during July 23 over northwest Madhya Pradesh.[1] The area of low pressure subsequently merged with the monsoon during July 25, while the cyclonic circulation persisted over Rajasthan and Punjab, before it was last noted during July 31.[1] Under the influence of the depression, heavy to extremely heavy rainfall was recorded in the states of Odisha, Chhattisgarh, Madhya Pradesh and Vidarbha.[1] In Odisha a total of 12 people lost their lives, while around 29,479 hectares (72,840 acres) of crops were affected and 1351 houses were damaged.[1][2]

Deep depression (IMD)
Duration	August 4 – August 7
Peak intensity	55 km/h (35 mph) (3-min)

On 3 August, a low pressure area formed over the Bay of Bengal under the influence of an upper air cyclonic circulation.[12] The system slowly intensified into a depression the following day while being located inland over Midnapore. The depression moved further inland, underwent intensification and was upgraded to a deep depression the same day. The storm moved further westwards and weakened into a depression on August 5,[13][14] and was last noted as a well marked low pressure area on August 7 over northwestern Madhya Pradesh.

The storm activated a flood situation in Odisha, affecting 12 districts of the state. Waterlogging was reported in the cities of Cuttack and Bhubaneshwar, and nearly 200 villages were affected after the Baitarani river swelled more than two meters over its flood danger level.[15] Sambalpur district received the highest amount of rainfall at 336.8 millimetres (13.26 in), followed by Balasore district receiving 226.4 millimetres (8.91 in).[16][17] Seven people were reported to be missing after two trawlers capsized off the coast.[18] The state government evacuated about 17,000 people from low-lying areas. 23 deaths were reported due to torrential rainfall.[19]

Extremely severe cyclonic storm (IMD)
Category 4 tropical cyclone (SSHWS)
Duration	October 7 – October 14
Peak intensity	185 km/h (115 mph) (3-min)  950 hPa (mbar)

Under the influence of an upper air cyclonic circulation, a low pressure area formed over the Andaman Sea on October 6.[20] The system drifted westward and intensified into a depression and subsequently into a deep depression the next day, followed by the Joint Typhoon Warning Center (JTWC) issuing a Tropical cyclone formation alert (TCFA).[21] Owing to favorable environmental conditions, the storm intensified into a cyclonic storm on October 8 and was named Hudhud.[22][23] Its convection consolidated in the following hours, and Hudhud became a Severe Cyclonic Storm on October 9. Hudhud underwent rapid deepening in the following days, intensified into a Very severe cyclonic storm and developed a well-defined eye feature. Shortly before landfall near Visakhapatnam, Andhra Pradesh on October 12, Hudhud reached its peak strength with three-minute wind speeds of 175 km/h (109 mph) and a minimum central pressure of 950 hPa (28.05 inHg).[24] The system drifted northwards over land and was last noted as a well-marked low pressure area over east Uttar Pradesh on October 14.[25]

Hudhud brought extensive damage to the coastal districts of Andhra Pradesh. At least 124 deaths were reported due to the storm and damage amounted to ₹21,908 crore (US$3.58 billion).[26]

Extremely severe cyclonic storm (IMD)
Category 4 tropical cyclone (SSHWS)
Duration	October 25 – October 31
Peak intensity	205 km/h (125 mph) (3-min)  950 hPa (mbar)

In late October, a low pressure area formed over the Arabian Sea. It slowly consolidated and a Tropical Cyclone Formation Alert (TCFA) was issued by the Joint Typhoon Warning Center (JTWC) on October 24.[27] The following day, the India Meteorological Department (IMD) classified the storm as a depression, designating it ARB 02, and the JTWC estimated tropical storm winds at the storm's center, starting advisories for the system.[28] On October 26, the system remained stationary and intensified into a Deep Depression. Subsequently, the IMD reported the storm had intensified into a cyclonic storm, and named it Nilofar.[29][30] The following day, the IMD upgraded the storm into a severe cyclonic storm and further to a very severe cyclonic storm, and the JTWC reported hurricane-strength winds at Nilofar's center as it meanwhile developed an eye feature.[31][32][33] On October 28, Nilofar underwent rapid deepening throughout the day, reaching a peak strength of 950 mbar (28.05 inHg) with wind speeds exceeding 205 km/h (127 mph), tied with Hudhud. Over the following days, the storm recurved northeastwards and experienced high vertical wind shear, causing it to weaken rapidly into a minimal cyclonic storm on October 30. The low-level circulation center of the storm became exposed in the following hours and IMD downgraded the storm into a well-marked low pressure area on October 31, issuing its final advisory for the system.

Deep depression (IMD)
Tropical storm (SSHWS)
Duration	November 5 – November 8
Peak intensity	55 km/h (35 mph) (3-min)  1000 hPa (mbar)

During November 3, an area of low pressure developed over the Bay of Bengal, under the influence of active northeast monsoon conditions. On November 5, the IMD identified the system as a depression and designated it with the identifier 'BOB 04'.[34] This was followed by the JTWC issuing a TCFA[35] and subsequently initiating advisories on the system. The JTWC designated it '05B' and was reporting 35 knots (65 km/h; 40 mph) winds around the center on November 6.[36] Later that day, the IMD upgraded BOB 04 into a Deep Depression.[37] The system drifted northwards over the next couple of days, maintaining its intensity. Located between two subtropical ridges, BOB 04 mostly showed quasi-stationary motion.[38] However, albeit the adequately favorable conditions for further intensification, BOB 04 failed to intensify further. This resulted in the IMD downgrading the system into a Depression[39] and further into an area of low pressure by November 8.[40]