WTIN20 DEMS 180755

TROPICAL WEATHER OUTLOOK



DEMS-RSMC TROPICAL CYCLONES NEW DELHI DATED 18.09.2026

TROPICAL WEATHER OUTLOOK FOR THE NORTH INDIAN OCEAN (THE BAY OF

BENGAL AND THE ARABIAN SEA) VALID FOR THE NEXT 168 HOURS ISSUED AT

0600

UTC OF 18.09.2026 BASED ON 0300 UTC OF 18.09.2026.

BAY OF BENGAL:

YESTERDAY\U2019S UPPER-AIR CYCLONIC CIRCULATION OVER NORTH THAILAND

PERSISTED OVER THE SAME REGION AND

NOW EXTENDED UPTO 9.4 KM ABOVE MEAN SEA LEVEL AT 0300 UTC OF TODAY,

THE 18TH SEPTEMBER,

2026. IT IS LIKELY TO EMERGE OVER THE NORTH ANDAMAN SEA AROUND 18TH

EVENING (1200 UTC). UNDER

ITS INFLUENCE, A LOW PRESSURE AREA IS LIKELY TO FORM OVER THE SAME

REGION AROUND THE EVENING

(1200 UTC) OF 19TH SEPTEMBER, 2026. THEREAFTER, IT IS LIKELY TO

INTENSIFY GRADUALLY AND MOVE WEST-

NORTHWESTWARDS TOWARDS SOUTH ODISHA-NORTH ANDHRA PRADESH COASTS

DURING SUBSEQUENT 3-4

DAYS.

SCATTERED TO BROKEN LOW AND MEDIUM CLOUDS WITH EMBEDDED INTENSE TO

VERY INTENSE CONVECTION

LAY OVER SOUTH AND ADJOINING CENTRAL BAY OF BENGAL, ANDAMAN SEA, GULF

OF MARTABAN AND

TENASSERIM COAST. SCATTERED LOW AND MEDIUM CLOUDS WITH EMBEDDED

ISOLATED WEAK TO MODERATE

CONVECTION LAY OVER THE REST BAY OF BENGAL.

*PROBABILITY OF CYCLOGENESIS (FORMATION OF DEPRESSION) DURING NEXT

168 HRS)



24       24-48    48-72    72-96    96-120    120-144     144-168

HOURS    HOURS    HOURS    HOURS    HOURS      HOURS      HOURS



NIL      NIL       LOW       MOD      HIGH - -

*NOTE: EVERY 24HR FORECAST IS VALID UPTO 0300 UTC (0830 IST) OF NEXT

DAY*

(- : GENESIS HAS ALREADY OCCURRED)

ARABIAN SEA:

YESTERDAY\U2019S LOW-PRESSURE AREA OVER SAURASHTRA & ADJOINING

NORTHEAST ARABIAN SEA BECAME LESS

MARKED AT 1200 UTC OF YESTERDAY, THE 17TH SEPTEMBER 2026.

SCATTERED TO BROKEN LOW AND MEDIUM CLOUDS WITH EMBEDDED ISOLATED

MODERATE TO INTENSE

CONVECTION LAY OVER EAST ARABIAN SEA, LAKSHADWEEP ISLANDS AREA,

MALDIVES AND COMORIN AREA.

PROBABILITY OF CYCLOGENESIS (FORMATION OF DEPRESSION) DURING NEXT 168

HRS:

24       24-48    48-72    72-96    96-120    120-144     144-168

HOURS    HOURS    HOURS    HOURS    HOURS      HOURS      HOURS



NIL       NIL      NIL     NIL       NIL       NIL         NIL





*NOTE: EVERY 24HR FORECAST IS VALID UPTO 0300 UTC (0830 IST) OF NEXT

DAY

REMARKS  NIL=