India Meteorological Department/ भारत मौसम विज्ञान विभाग
ACWC KOLKATA / ए .सी .डबब्लू .सी कोलकाता
Coastal Weather Bulletin
DAILY ONE Bulletin Valid for 12 hrs from 09 UTC of 2026-09-12 to 21 UTC of 2026-09-12
| Synoptic Situation | SOUTHWEST MONSOON WEAK TO MODERATE OVER NORTHWEST BAY OF BENGAL AND ANDAMAN SEA. |
| Wind | MAINLY WESTERLY 10 TO 15 KNOTS OVER ANDAMAN SEA. |
| Weather | RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MOST PLACES OVER ANDAMAN & NICOBAR COASTS. |
| Visibility | GOOD BECOMING MODERATE IN RAIN/THUNDERSHOWER OVER ANDAMAN SEA. |
| Sea Condition | SMOOTH TO SLIGHT. |
| Port Signal | NIL. |
| Storm Surge/Tidal Warning | SWELL WAVES IN THE RANGE OF 17.0 - 18.0 SEC PERIOD WITH 1.3 - 1.5 M HEIGHT ARE FORECASTED TILL 23:30 HOURS ON 13-09-2026. IT ADVISED THAT THERE IS A POSSIBILITY OF SURGING OF WAVES, BOATS TO PLY WITH UTMOST VIGILANCE, RECREATION WITH DUE CARE. |
| Wind | SOUTHEAST TO SOUTHERLY 10 TO 15 KNOTS |
| Weather | RAIN OR THUNDERSHOWER VERY LIKELY TO OCCUR AT MANY PLACES OVER WEST BENGAL COAST. |
| Visibility | GOOD BECOMING MODERATE IN RAIN/THUNDERSHOWER OVER ANDAMAN SEA. |
| Sea Condition | SMOOTH TO SLIGHT. |
| Port Signal | LOWER LOCAL CAUTIONARY SIGNAL NO. 3 AT HOOGHLY (KOLKATA & HALDIA) PORT WITH SECTIONAL SIGNAL NO-I AT SAGAR ISLAND PORT. |
| Storm Surge/Tidal Warning | NIL. |
| Time of Issue | 13:55 IST of 2026-09-12 |