WOIN20 VECC 040300 GOVERNMENT OF INDIA INDIA METEOROLOGICAL DEPARTMENT REGIONAL METEOROLOGICAL CENTRE, KOLKATA-700027 MID-DAY WEATHER BULLETIN FOR WEST BENGAL, SIKKIM, ODISHA, BIHAR, JHARKHAND AND THE ANDAMAN & NICOBAR ISLANDS DATED - MONDAY 04/05/2026 MID-DAY INFERENCE :: DATED - MONDAY 04/05/2026 WEATHER SUMMARY BASED ON 0830 HRS IST OF MONDAY 04/05/2026 AS PER MEDIA REPORT, HAILSTORM OCCURRED AT ONE OR TWO PLACES OVER JHARKHAND. GUSTY WINDS WERE RECORDED AT ONE OR TWO PLACES OVER ANDAMAN ISLAND, JHARKHAND, BIHAR, ODISHA AND SOUTH 24 PARGANAS DISTRICT OF GANGETIC WEST BENGAL. VERY LIGHT TO MODERATE RAINFALL OCCURRED AT MOST PLACES OVER SIKKIM; AT MANY PLACES WITH HEAVY RAINFALL AT ONE OR TWO PLACES OVER KALIMPONG DISTRICT OF SUB HIMALAYAN WEST BENGAL. VERY LIGHT TO MODERATE RAINFALL OCCURRED WITH HEAVY RAINFALL AT ONE OR TWO PLACES OVER ODISHA. VERY LIGHT TO MODERATE RAINFALL OCCURRED AT ONE OR TWO PLACES OVER JHARKHAND, BIHAR. LIGHT RAINFALL OCCURRED AT A FEW PLACES OVER ANDAMAN & NICOBAR ISLANDS. VERY LIGHT RAINFALL OCCURRED AT ONE PLACE OVER MURSHIDABAD DISTRICT OF GANGETIC WEST BENGAL. DRY WEATHER PREVAILED OVER THE REST OF THE REGION. YESTERDAYACA A S MAXIMUM TEMPERATURE ROSE MARKEDLY AT A FEW PLACES OVER SUB HIMALAYAN WEST BENGAL; ROSE APPRECIABLY AT A FEW PLACES OVER SIKKIM & SUB HIMALAYAN WEST BENGAL; AT ONE OR TWO PLACES OVER GANGETIC WEST BENGAL; FELL MARKEDLY AT ONE OR TWO PLACES OVER ODISHA; FELL APPRECIABLY AT ONE OR TWO PLACES OVER ODISHA AND BIHAR. NO LARGE CHANGE IN YESTERDAYACA A S MAXIMUM TEMPERATURE OCCURRED ELSEWHERE OVER THE REGION. THOSE WERE MARKEDLY BELOW NORMAL AT A FEW PLACES OVER BIHAR; AT ONE OR TWO PLACES OVER ODISHA, JHARKHAND AND SUB HIMALAYAN WEST BENGAL; BELOW TO APPRECIABLY BELOW NORMAL AT MOST PLACES OVER JHARKHAND; AT MANY PLACES OVER BIHAR; AT A FEW PLACES OVER ODISHA AND SIKKIM & SUB HIMALAYAN WEST BENGAL AND NORMAL ELSEWHERE IN THE REGION. YESTERDAYACA A S HIGHEST MAXIMUM TEMPERATURE OF 41.7A AOC WAS RECORDED AT BOUDH (ODISHA) IN THE PLAINS AND 24.5A AOC AT KALIMPONG (SUB HIMALAYAN WEST BENGAL) IN THE HILLS OF THE REGION. MAIN SYNOPTIC FEATURE BASED ON 0830 HRS IST OF MONDAY 04/05/2026 THE UPPER AIR CYCLONIC CIRCULATION OVER EAST MADHYA PRADESH & NEIGHBOURHOOD PERSISTS AND NOW EXTENDS UPTO 1.5 KM ABOVE MEAN SEA LEVEL. AN UPPER AIR CYCLONIC CIRCULATION LIES OVER INTERIOR ODISHA & NEIGHBOURHOOD AT 0.9 KM ABOVE MEAN SEA LEVEL. A TROUGH RUNS FROM SOUTH CHHATTISGARH TO MANIPUR ACROSS THE CYCLONIC CIRCULATION OVER INTERIOR ODISHA & NEIGHBOURHOOD, GANGETIC WEST BENGAL AND MEGHALAYA AT 0.9 KM ABOVE MEAN SEA LEVEL. THE EAST-WEST TROUGH FROM PUNJAB TO NAGALAND EXTENDING UPTO 1.5 KM ABOVE MEAN SEA LEVEL HAS BECOME LESS MARKED. WEATHER FORECAST FOR NEXT SEVEN DAYS MONDAY 04 MAY(DAY-1) LIGHT TO MODERATE RAIN / SNOW VERY LIKELY TO OCCUR AT MOST PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MOST PLACES OVER ALL THE DISTRICTS OF SUB HIMALAYAN WEST BENGAL AND HOOGHLY, NADIA, MURSHIDABAD, WEST MIDNAPORE, JHARGRAM, PURULIA, BANKURA, EAST BURDWAN, WEST BURDWAN DISTRICTS OF GANGETIC WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER JHARKHAND, BIHAR AND REST DISTRICTS OF GANGETIC WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER ODISHA AND NICOBAR ISLANDS. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ANDAMAN ISLANDS. TEMPERATURE FORECAST: NO LARGE CHANGE IN DAY TEMPERATURE (MAXIMUM TEMPERATURE) FOR NEXT 07 DAYS OVER BIHAR, JHARKHAND, ODISHA AND ALL THE DISTRICTS OF WEST BENGAL. TUESDAY 05 MAY(DAY-2) LIGHT TO MODERATE RAIN / SNOW VERY LIKELY TO OCCUR AT MOST PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MOST PLACES OVER ALL THE DISTRICTS OF SUB HIMALAYAN WEST BENGAL AND NADIA, EAST & WEST MIDNAPORE, JHARGRAM, BIRBHUM, EAST BURDWAN, NORTH 24 PARGANAS DISTRICTS OF GANGETIC WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER JHARKHAND AND REST DISTRICTS OF GANGETIC WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER ODISHA, ANDAMAN AND NICOBAR ISLANDS. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR. WEDNESDAY 06 MAY(DAY-3) LIGHT TO MODERATE RAIN / SNOW VERY LIKELY TO OCCUR AT MOST PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER ALL THE DISTRICTS OF WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER BIHAR, JHARKHAND AND ODISHA. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ANDAMAN AND NICOBAR ISLANDS. THURSDAY 07 MAY(DAY-4) LIGHT TO MODERATE RAIN / SNOW VERY LIKELY TO OCCUR AT MOST PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER ALL THE DISTRICTS OF SUB HIMALAYAN WEST BENGAL AND NADIA, MURSHIDABAD, BIRBHUM, EAST & WEST BURDWAN DISTRICTS OF GANGETIC WEST BENGAL. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER JHARKHAND, ANDAMAN & NICOBAR ISLANDS AND REST DISTRICTS OF GANGETIC WEST BENGAL. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR AND ODISHA. FRIDAY 08 MAY(DAY-5) LIGHT TO MODERATE RAIN / SNOW VERY LIKELY TO OCCUR AT MOST PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER JHARKHAND, ANDAMAN & NICOBAR ISLANDS AND ALL THE DISTRICTS OF WEST BENGAL. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR AND ODISHA. SATURDAY 09 MAY(DAY-6) LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER JHARKHAND, ANDAMAN & NICOBAR ISLANDS AND ALL THE DISTRICTS OF WEST BENGAL. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA AND BIHAR. SUNDAY 10 MAY(DAY-7) LIGHT TO MODERATE RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER SIKKIM. LIGHT TO MODERATE RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT A FEW PLACES OVER ANDAMAN & NICOBAR ISLANDS. LIGHT RAIN OR THUNDERSHOWER LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA, JHARKHAND, BIHAR AND ALL THE DISTRICTS OF WEST BENGAL. WEATHER WARNING FOR NEXT SEVEN DAYS MONDAY 04 MAY(DAY-1) 1) HEAVY RAINFALL (07-11 CM) VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR, ODISHA AND KALIMPONG, JALPAIGURI, ALIPURDUAR DISTRICTS OF SUB HIMALAYAN WEST BENGAL AND HOOGHLY, EAST BURDWAN DISTRICTS OF GANGETIC WEST BENGAL. 2) HAILSTORM VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER JHARKHAND AND ODISHA. 2) THUNDERSTORM WITH GUSTY WIND (50-60 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR, ODISHA, JHARKHAND AND BIRBHUM, MURSHIDABAD, NADIA, PURULIA, BANKURA, EAST & WEST BURDWAN, JHARGRAM, WEST MIDNAPORE DISTRICTS OF GANGETIC WEST BENGAL AND MALDA, NORTH & SOUTH DINAJPUR DISTRICTS OF SUB HIMALAYAN WEST BENGAL. 3) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER THE REST DISTRICTS OF WEST BENGAL. TUESDAY 05 MAY(DAY-2) 1) HEAVY RAINFALL (07-11 CM) VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA, JHARKHAND AND JALPAIGURI, COOCHBEHAR, ALIPURDUAR DISTRICTS OF SUB HIMALAYAN WEST BENGAL. 2) HAILSTORM VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER JHARKHAND AND ODISHA. 2) THUNDERSTORM WITH GUSTY WIND (50-60 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA, JHARKHAND AND JHARGRAM, EAST & WEST MIDNAPORE, EAST BURDWAN, BIRBHUM, NADIA, NORTH 24 PARGANAS DISTRICTS OF GANGETIC WEST BENGAL. 3) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR AND THE REST DISTRICTS OF WEST BENGAL. WEDNESDAY 06 MAY(DAY-3) 1) HEAVY RAINFALL (07-11 CM) VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR AND JALPAIGURI, ALIPURDUAR DISTRICTS OF SUB HIMALAYAN WEST BENGAL. 2) THUNDERSTORM WITH GUSTY WIND (50-60 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR. 2) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA, JHARKHAND AND ALL THE DISTRICTS OF WEST BENGAL. THURSDAY 07 MAY(DAY-4) 1) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR, JHARKHAND AND BIRBHUM, MURSHIDABAD, EAST & WEST BURDWAN, NADIA DISTRICTS OF GANGETIC WEST BENGAL AND DARJEELING, JALPAIGURI, KALIMPONG, COOCHBEHAR, ALIPURDUAR DISTRICTS OF SUB HIMALAYAN WEST BENGAL. 2) THUNDERSTORM WITH GUSTY WIND (30-40 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA AND THE REST DISTRICTS OF WEST BENGAL. FRIDAY 08 MAY(DAY-5) 1) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER JHARKHAND. 2) THUNDERSTORM WITH GUSTY WIND (30-40 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR, ODISHA AND JHARGRAM, PURULIA, BANKURA, WEST MIDNAPORE DISTRICTS OF GANGETIC WEST BENGAL AND ALL THE DISTRICTS OF SUB HIMALAYAN WEST BENGAL. SATURDAY 09 MAY(DAY-6) 1) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER JHARKHAND. 2) THUNDERSTORM WITH GUSTY WIND (30-40 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER BIHAR AND ODISHA. SUNDAY 10 MAY(DAY-7) 1) THUNDERSTORM WITH GUSTY WIND (40-50 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER JHARKHAND. 2) THUNDERSTORM WITH GUSTY WIND (30-40 KMPH) AND LIGHTNING VERY LIKELY TO OCCUR AT ONE OR TWO PLACES OVER ODISHA. OUTLOOK FOR SUBSEQUENT TWO DAYS : LITTLE CHANGE. () DUTY OFFICER FOR HEAD REGIONAL METEOROLOGICAL CENTRE KOLKATA 04/05/2026 NB: *FORECAST AND WARNING FOR ANY DAY IS VALID FROM 0830HRS IST TO 0830 HRS IST OF NEXT DAY. FOR MORE INFORMATION KINDLY VISIT WWW.MAUSAM.IMD.GOV.IN/KOLKATA "KINDLY DOWNLOAD AND USE "MAUSAM APP" FOR LOCATION SPECIFIC FORECAST AND WARNING, MEGHDOOT APP FOR AGROMET ADVISORY AND DAMINI APP FOR LIGHTNING WARNING "=