Weekly Weather |

Thunder squalls in parts of West Bengal

    This is the first week (12-18 April 2018) of Pre-Monsoon Season when regions all over the country received rainfall.
    Three Western Disturbances passed through the Western Himalayan Region and moved east-northeastwards and caused hail storms which occurred over, West Bengal & Sikkim, Chhattisgarh and thundersqualls occurred over West Bengal, Bihar, Jharkhand, Odisha & Tripura. It also caused rain/snow at many places over the Western Himalayan Region on many days of the week; rain at isolated places over the plains of northwest India on few days of the week and over Arunachal Pradesh, Sub-Himalayan West Bengal & Sikkim, Assam & Meghalaya and Nagaland, Manipur, Mizoram & Tripura on many days of the week.
    The east-west trough from Bihar to Manipur caused rainfall over Gangetic West Bengal and Odisha on most of the days of the week.
    The trough of low at mean sea level over Equatorial Indian Ocean and adjoining southwest Bay of Bengal moved westwards to Arabian Sea and caused scattered to isolated rainfall over the Southern Peninsula.
    A north-south wind discontinuity from north Madhya Maharashtra to interior Tamil Nadu across interior Karnataka caused light rainfall over Central India and Maharashtra & Goa on two to three days of the week.
    Rainfall also occurred at a few places over the southern Peninsula, Central India and on many days of the week and over plains of northwest India on few days of the week.
    Thunderstorms occurred at a few/one/two places over Northeastern States and the southern Peninsula on many days of the week and on two/three days of the week over the rest of the country except Gujarat State where it occurred on one day only.
    The feeble Western Disturbance as an upper air cyclonic circulation laid over north Pakistan & adjoining Jammu & Kashmir.
    Another Western Disturbance developed as an upper air cyclonic circulation laid over Iran and neighbouring areas.
HAIL STORM AND THUNDERSQUALL:
      A hailstorm occurred on 12.04.2018 at Jalpaiguri from 1535 to 1542 hours IST with diameter of 0.6 cm. A hail storm also occurred at Purulia district.
      A hailstorm occurred on 13th at Jalpaiguri from 1735 to 1745 hours IST with diameter 1.0 cm and in Gangtok from 1545 to 1547 hours IST with diameter 0.4 cm.
      A hailstorm occurred on 15th April at Mana Airport (Chhattisgarh) from 1618 to 1620 hours IST.
      A squall occurred at Digha on 14th April with 2 minutes duration from 2000 hours IST to 2002 hours IST from Northwesterly direction with maximum wind speed of 44 kmph.
      A thundersquall with wind from North-West direction & wind speed reaching upto 72 kmph occurred at Agartala (Tripura) on 16th April, 2018 at 1634 Hours IST. The duration of the squall was1 minute only.
      Two squalls passed over KOLKATA (Alipore) on 17th April from 1942­1943 hours IST and 1955 to 1957 hours IST from Northwesterly direction with highest gusts of between 84 kmph and 98 kmph and lasted for two minutes.
      Another squall also passed over KOLKATA (Dum Dum) on 17th April from 2014­2015 hrs IST from Northwesterly direction with highest gust of 98 kmph and lasted for one minute.
      As per media reports at least ten people died due thundersqualls at some places in West Bengal. Out of the ten deaths reported four deaths occured in Kolkata. West Bengal, Mobile and Internet services were hit with the storm snapping overhead wires and damaging mobile towers. Two mobile towers in Uttarpara and Hindmotor of Hooghy district gave way, throwing vehicular traffic off-gear.
      Thundersqualls also occurred at isolated places in Jharkhand and Odisha on 17th April.
    Heat wave/severe heat wave conditions prevailed at isolated places over West Rajasthan on 16th and over Saurashtra on 17th & 18th April 2018.
    Maximum temperature of above 40°C was reported at many places over Rajasthan, West Madhya Pradesh, Vidarbha, Marathwada on many days and over Gujarat State few days; at isolated places over North Madhya Maharashtra, Chhattisgarh, Coastal Andhra Pradesh, Telangana, East Uttar Pradesh and Odisha one to two days during the week.
    1. The highest maximum temperature of 45.4°C was recorded at Chandrapur (Vidharbha) over the plains of the country on 18th April 2018.
The cumulative rainfall Sub-Divisionwise for the week (12-18 April 2018) predicted by IMD GFS model shows that normal/excess rainfall would be over most of the Sub-Divisions of the Northwest, Central and a few Sub-Divisions of Northeast & Southern Peninsula. Out of excess rainfall predicted for areas only west Uttar Pradesh, East Rajasthan, East Madhya Pradesh, Konkan & Goa, Chhattisgarh and Tamil Nadu & Puducherry received excess rainfall. The normal predicted rainfall for Sub-Divisions which however received excess rainfall are Uttarakhand, Gujarat State, Vidarbha and s South Interior Karnataka. The deficient rainfall predicted for areas which received excess rainfall are Gangetic West Bengal, Odisha, Jharkhand, Coastal Andhra Pradesh, and Lakshadweep. Overall model has predicted well for 15 out of 36 sub-divisions of the country.
During the week, (12-18 April 2018) rainfall over the country as a whole was 27 per cent above the Long Period Average (LPA). During the week, rainfall was excess over most of the Sub-Divisions of Central and East India and many Sub-Divisions of the southern Peninsula, and a few Sub-Divisions of Northwest India; deficient/largely deficient rainfall occurred over the rest of the country. During only this week Gujarat State has received excess rainfall. During the week all the four broad homogeneous regions of India received normal to excess rainfall. Details of the rainfall distribution over the four of India are given below:
Rainfall in the pre-monsoon season period, during 01st March to 18th April over the country as a whole was 21 per cent below the Long Period Average (LPA). The rainfall was largely excess over, Konkan & Goa, Rayalaseema, Karnataka, & Lakshadweep, excess over Andaman & Nicobar Islands, Coastal Andhra Pradesh, Telangana, Gangetic West Bengal, Odisha, Jharkhand and Kerala; normal over Sub-Himalayan West Bengal & Sikkim, west Uttar Pradesh, Uttarakhand, Marathawada, Chhattisgarh and Tamil Nadu & Puducherry; deficient over Arunachal Pradesh, Assam & Meghalaya, Bihar, East Uttar Pradesh, Haryana, Punjab, Himachal Pradesh, Jammu & Kashmir, Madhya Pradesh, Madhya Maharashtra and Vidarbha. The rest of the area received largely deficient rainfall. Out of the four broad homogeneous regions of India the Southern Peninsula received excess rainfall and Central India received normal rainfall. The details of rainfall distribution over the four broad homogeneous regions of India are given below:
Rainfall will be above normal over parts of Western Himalayan Region; near normal over East & Northeast India and it will be slightly below normal over the Southern Peninsula. Heavy rain/snow can occur at isolated places over Jammu & Kashmir. Thunder squall accompanied with hail can occur at isolated places over East & Northeast India and the southern Peninsula. Dust storm/thunderstorm can occur over plains of northwest India
Rainfall will be near normal over East & Northeast India and it will be below normal over the Western Himalayan Region & the Southern Peninsula. Heavy rain can occur at isolated places over East & Northeast India. Thunder squall accompanied with hail can occur at isolated places over East & Northeast India and the Southern Peninsula. Dust storm/thunderstorm can occur over the plains of northwest India.
    12 APRIL 2018: ANDAMAN & NICOBAR ISLANDS: NANCOWRIE-2, ARUNACHAL PRADESH: DAPORIJO-3; ASSAM & MEGHALAYA: DHOLAI-5, SILCHAR-3, DILLIGHAT-3, MATIJURI-3, B P GHAT-3, A P GHAT-3; NAGALAND, MANIPUR, MIZORAM & TRIPURA: KAILASAHAR-2; SUB-HIMALAYAN WEST BENGAL & SIKKIM: GANGTOK-5, TADONG-4; GANGETIC WEST BENGAL: BERHAMPORE-4, PURULIA-2, ODISHA: KANKADAHAD ARG-2, RAIRANGPUR-2,; EAST UTTAR PRADESH: ALLAHABAD SADAR-1, CHAYAL-1, SULTANPUR-1, SAFIPUR-1, KANPUR-1, MOHAMMEDABAD-1, SIRAULI GAUSPUR-1; WEST UTTAR PRADESH: AGRA (TAJ)-8, SHIKOHABAD-3, BAH-3 KHAIRAGARH-2; UTTARAKHAND: NAINITAL-6, HALDWANI-5, BANBASA-2, MUKTESHWAR-2; HARYANA, CHANDIGARH & DELHI: GUHLA-2, ISMAILABAD-2, BAWAL-2; HIMACHAL PRADESH: SALUNI-6,SARAHAN-2, BAJAURA-2, RAMPUR-2,KUMARSAIN-2; JAMMU & KASHMIR: BATOTE-3, BADARWAH-2, UDHAMPUR IAF-2, PAHALGAM AWS-2; EAST RAJASTHAN: BHARATPUR TEHSIL SR-6, KOTKASIM SR-5, RUPBAS-5, RAJAKHERA-4, BAHADURPUR SR-4, ALWAR-4, RAMGARH SR-4, TIZARA SR-3, KUMHER SR-3, BAYANA-3, NIMARANA-3; WEST MADHYA PRADESH: BHAINSDEHI-2, SABALGARH-1; EAST MADHYA PRADESH: AMARWARA-1, GARHAKOTA-1, MALANJKHAND-1; TIKAMGARH AWS-1; GUJARAT REGION: KADI-1, UNJHA-1, RADHANPUR-1; MADHYA MAHARASHTRA: AKALKOT-1, MARATHAWADA: UDGIR-3, HADGAON-2, BEED-2; VIDARBHA: WASHIM-2; COASTAL ANDHRA PRADESH: BOBBILI-3, CHINTAPALLE-3; TELANGANA: VICARABAD-3, NAWABPET-3,; TAMILNADU & PUDUCHERRY: METTUPALAYAM-6, RAJAPALAYAM-6, KANYAKUMARI-6, THENKASI-5, WATRAP-5, VADIPATTI-5, KUZHITHURAI-4, TIRUCHENDUR-4, VIRUDHUNAGAR-3, PERAIYUR-3; NORTH INTERIOR KARNATAKA: VIJAYAPURA-6 DABKA-4, HAVERI APMC-3, BADAMI-3; SOUTH INTERIOR KARNATAKA: TALAGUPPA-3, KOPPA-3; MADIKERI-2, NAPOKLU-2; KERALA: ANGADIPPURAM-4, ARYANKAVU-4, CHERTHALA-4, PERINTHALMANNA-3, CHITTUR-3, KOLLENGODE-3, OTTAPPALAM-3, KOLLAM-3, PUNALUR-2.
    13 APRIL 2018: ARUNACHAL PRADESH: PASSIGHAT-5, BHALUKPONG-3; ASSAM & MEGHALAYA: DHUBRI(CWC)-9, DHUBRI-9, TIKRIKILLA-8, GOSSAIGAON-5, MANGALDOI-4, NORTH LAKHIMPUR-4, KOKRAJHAR-4, TEZPUR-3, JIA BHARALI N T XING-3, BEKI RD. BRIDGE-3, BARPETA -3, MANAS N H XING-3, GOALPARA-3, GOALPARA (CWC)-3, GOLAGHAT-3, BAHALPUR-3, SIBSAGAR-3, WILLIAMNAGAR-3, BIHUBAR-3; NAGALAND, MANIPUR, MIZORAM & TRIPURA: CHOTABEKRA-4, JHARNAPANI-2, KAILASAHAR-1, KOHIMA-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: COOCHBEHAR­10. ALIPURDUAR-7, CHEPAN-7, MATHABHANGA-7, BAROBHISA­6, SEVOKE­5, DOMOHANI-4, JALPAIGURI­4; GANGETIC WEST BENGAL: BANKURA­7, BANKURA (CWC)-6, KALAIKUNDA­3; ODISHA: BOLAGARH-9, CHAMPUA-7, BANGIRIPOSI-5, JAMSOLAGHAT-5, BONTH-4, LAHUNIPARA-4, CHANDANPUR-4; JHARKHAND: CHANDIL-3, JAMSHEDPUR-1; WEST UTTAR PRADESH: LALITPUR-2; UTTARAKHAND: DWARAHAT-3, KARNPRAYAG-2, CHAMOLI-2,; HIMACHAL PRADESH: SEO BAGH-1, JOGINDARNAGAR-1, PAONTA-1; EAST RAJASTHAN: SIKAR-1; WEST MADHYA PRADESH: TARANA-1, INDORE-AWS-1; EAST MADHYA PRADESH: AMARKANTAK-2, KOTMA-1; VIDARBHA: GONDIA-1, NAGPUR-1; COASTAL ANDHRA PRADESH: CHINTUR-5, KUNAVARAM-3, ARAKU VALLEY-3, CHINTAPALLE-3, BOBBILI-3; TELANGANA: ASWAPURAM-6, MUSTABAD-1; RAYALASEEMA: PATTIKANDA-2; TAMILNADU & PUDUCHERRY: COONOOR PTO-10, KOTHAGIRI-8, SIVAGIRI-7, K BRIDGE-5, SHENCOTTAH-4, THENKASI-3, SRIVILLIPUTHUR-3; COASTAL KARNATAKA: SUBRAHMANYA-4, SOUTH INTERIOR KARNATAKA: THYAGARTHI-6; MADIKERI-3; BHAGAMANDALA-2, KONANUR-2; KERALA: MANJERI-6, KOZHIKODE-4, IDUKKI-4, THIRUVANANTHAPURAM CITY-3, THIRUVANANTHAPURAM A/P-3.
    14 APRIL 2018: ARUNACHAL PRADESH: ROING-7, KOLORIANG-4, ALONG(AWS)-2, PASSIGHAT-2, M.C. ITANAGAR-1; ASSAM & MEGHALAYA: GOSSAIGAON-5, NONGSTOIN -5, SOHRA(RKM)-4, SOHRA-4, WILLIAMNAGAR-4, DHEMAJI (AWS)-4; NAGALAND, MANIPUR, MIZORAM & TRIPURA: CHOTABEKRA-1, KAILASAHAR-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: JALPAIGURI-2, CHUNGTHANG-2, SHIVGYER-2, JALPAIGURI-2; JAMMU & KASHMIR: BATOTE-2, EAST RAJASTHAN: SIKAR-1; EAST MADHYA PRADESH: BALAGHAT-AWS-1; VIDARBHA: GONDIA-1, NAGPUR A/P-1; COASTAL ANDHRA PRADESH: PADERU-1; TELANGANA: NARAYANKHED-3; TAMILNADU & PUDUCHERRY: VILATHIKULAM-11, SIVAGANGA-10, PATTUKOTTAI-6, COONOOR-6, COONOOR PTO-6, BODINAICKANUR-6, PECHIPARAI-5, NAGERCOIL-5, KAMUDHI-5, KOVILPATTI-4, BHOOTHAPANDY-4, KALUGUMALAI-4; NORTH INTERIOR KARNATAKA: HIDKAL DAM-4, HIREKERUR-3, YEDRAMI-3; KHANAPUR-2; SOUTH INTERIOR KARNATAKA: ANAVATTI-4, BALEHONNUR-2,; KERALA: KOCHI AP-7, VAIKOM-6, PIRAVOM-4, CIAL KOCHI-3, PERUMBAVUR-3, ALAPPUZHA-3, KAYAMKULAM AGRI-3, KOTTAYAM-3.
    15 APRIL 2018: ANDAMAN & NICOBAR ISLANDS: CARNICOBAR-4, CARNICOBAR(IAF)-3; ARUNACHAL PRADESH: ROING-3,; ASSAM & MEGHALAYA: N/LAKHIMPUR-3, MOTUNGA-2, BARPETA(AWS)-2; NAGALAND, MANIPUR, MIZORAM & TRIPURA: SONAMURA-1, AGARTALA A/P-1, A.D.NAGAR-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: GANGTOK­1; GANGETIC WEST BENGAL: DIGHA­5; ODISHA: BETANATI ARG-7, NAWARANGPUR-5, THAKURMUNDA-5, SIMILIGUDA AWS-3, KARANJIA-3; EAST RAJASTHAN: KOTA-1; EAST MADHYA PRADESH: AMARKANTAK-3, SEONI-AWS-1, BALAGHAT-AWS-1; MADHYA MAHARASHTRA: BARSHI-3, MARATHAWADA: TULJAPUR-1; VIDARBHA: LAKHANDUR-5, LAKHANI-2, BRAMHAPURI-2, GOADIA-1; COASTAL ANDHRA PRADESH: CHINTAPALLE-5, PARVATHIPURAM-5; TELANGANA: MADNUR-2, MOMINPET-2; TAMILNADU & PUDUCHERRY: KANYAKUMARI-5, CHITTAMPATTI-5, K BRIDGE-5, SIVAKASI-4; COASTAL KARNATAKA: PUTTUR-4, SYBRAMANYA-3; NORTH INTERIOR KARNATAKA: KAJURI-3, CHINCHOLI-2,; SOUTH INTERIOR KARNATAKA: BELUR-1; KERALA: KANNUR 8, KUDULU-4, KURUDAMANNIL-4, KOZHIKODE-3, KONNI-3.
    16 APRIL 2018: ARUNACHAL PRADESH: TEZU-2; ASSAM & MEGHALAYA: BONGAIGAON (AWS)-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: SINGLABAZAR-2, GYLSING-1,NAMTHANG-1; ODISHA: KHARIAR-1; JHARKHAND: JAMSHEDPUR-2, WEST MADHYA PRADESH: ASHOKNAGAR-1; MADHYA MAHARASHTRA: AKALKOT-4, BARSHI -3, JAT-1, SANGOLA-1; MARATHAWADA: NILANGA-3, BHOKAR-3, HADGAON-3, MAHUR-3; VIDARBHA: PAUNI-2, WARDHA-1; COASTAL ANDHRA PRADESH: CHINTAPALLE(A)-2, PADERU-2, CHINTAPALLE-2; TELANGANA: TANDUR-4, JUKKAL-3, NALLABELLY-2; TAMILNADU & PUDUCHERRY: METTUPALAYAM-3, MYLAUDY-3, TIRUCHIRAPPALLI AP-3, KUMARAPALAYAM-2, CHERANMAHADEVI-2; COASTAL KARNATAKA: SUBRAHMANYA-3, DHARMASTHALA-2, KIRAVATTI-2,; NORTH INTERIOR KARNATAKA: BIDAR PTO-5, BIDAR-5, GOKAK-4, KUNDARGI ARG-4, KANABARGI AWS-3, ATHANI ARG-3; SOUTH INTERIOR KARNATAKA: NAPOKLU-3, SOMAWARPET-3, CHIKKAMAGALURU-2; KERALA: VYTHIRI-6, VAIKOM-6, PARAMBIKULAM-5, KOZHA-5, KOTTAYAM-4, PERUMBAVUR-4, MANNARKAD-3.
    17 APRIL 2018: ASSAM & MEGHALAYA: NONGSTOIN (AWS)-3, NONGSTOIN-3, SHILLONG-1; NAGALAND, MANIPUR, MIZORAM & TRIPURA: BISHALGARH-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: SANKALAN­3, MANGAN­2; HIMACHAL PRADESH: UDAIPUR-1; JAMMU & KASHMIR: GULMARG AWS-3, GULMARG R.S.-3, KUPWARA-3, PAHALGAM-2, GUND-2, AWANTIPUR IAF-2, BANIHAL-2; MADHYA MAHARASHTRA: BARSHI-1, KAGAL-1; VIDARBHA: SIRONCHA-1; COASTAL ANDHRA PRADESH: VEPADA-3, KOYYALAGUDEM-3, NARSIPATNAM-2; TELANGANA: DOMAKONDA-2; TAMILNADU & PUDUCHERRY: BODINAICKANUR-10, K BRIDGE-4, ILLUPPUR-2, KALUGUMALAI-2, NATHAM-2; COASTAL KARNATAKA: MANGALURU AP-1, PANAMBUR-1; NORTH INTERIOR KARNATAKA: SHIRAHATTI-1; SOUTH INTERIOR KARNATAKA: YELAHANKA TC-4; SARGUR-3, MADDUR-3, DAVANGERE PTO-3, MYSURU-2; KERALA: MYLADUMPARA-6, KOZHA-5, PIRAVOM-4 , IRIKKUR-3, ALUVA-3, PERUMBAVUR-3; LAKSHADWEEP: AGATHI AP-2, AMINI DIVI-2.
    18 APRIL 2018: ASSAM & MEGHALAYA: MANGALDOI-1, CHAPARMUKH-1, BAGHMARA (AWS)-1; NAGALAND ,MANIPUR, MIZORAM & TRIPURA: PHEK(AWS)-2, JHARNAPANI-2, IMPHAL-2, AGARTALA A/P-1; SUB-HIMALAYAN WEST BENGAL & SIKKIM: NAMTHANG-2; MANGAN-1, SANKALAN-1, CHUNGTHANG-1, DAMTHANG-1, YUKSOM¬1, DARJEELING-1, COOCH BEHAR-1; GANGETIC WEST BENGAL: KOLKATA (ALIPORE)¬3, HARINKHOLA-2, KOLKATA (DUM DUM)-2; JHARKHAND: JAMSHEDPUR-3, BIHAR: FORBESGANJ-1; JAMMU & KASHMIR: GULMARG-2, KUKERNAG-1, BADERWAH-1, QAZIGUND-1, KUPWARA-1, BANIHAL-1, BATOTE-1; KONKAN & GOA: BHIRA-5, POLADPUR-3, TALA-2, PONDA-1, SANGAMESHWAR DEVRUKH-1, MAHAD-1; MADHYA MAHARASHTRA: JUNNAR-4, TASGAON-2, KAVATHE MAHAKAL-2, SHIRALA-2, ATPADI-1, AKALKOT-1, VITA-1, JAT-1, PAUD MULSHI-1, KOLHAPUR-1, MADHA-1; MARATHAWADA: OSMANABAD-2, TULJAPUR-1, KAIJ-1; VIDARBHA: WASHIM-1, CHANDRAPUR-1; TELANGANA: KOTGIRI-1, VICARABAD-1; .TAMILNADU & PUDUCHERRY: COLACHEL-1; COASTAL KRANATAKA: MANGALURU AP-1, KIRAVATTI-1; NORTH INTERIOR KARNATAKA: JAMKHANDI-4, ATHANI-2, KHAJURI-2, AFZALPUR-2, RADDEWADGI ARG-2, KALABURGI-2, LONDA-1, ATHANI ARG-1, HUBBALLI-1, LOKAPUR-1, KUNDARGI ARG-1, INDI-1; SOUTH INTERIOR KARNATAKA: BHAGAMANDALA-1, NAPOKLU-1, SRINGERI-1; KERALA: KUPPADY-2, PIRAVOM-2, KOTTAYAM-1, CHENGANNUR-1; LAKSHADWEEP: AGATHI AP-1.

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