WTPS12 NFFN 041800 PART 1 OF 2 TROPICAL DISTURBANCE ADVISORY NUMBER B14 ISSUED FROM RSMC NADI MAR 041931 UTC. SEVERE TROPICAL CYCLONE KEVIN CENTRE 941HPA WAS LOCATED NEAR 24.8S 178.4E AT 041800 UTC. POSITION FAIR BASED ON HIMAWARI HR VIS/IR IMAGERY AND PERIPHERAL SURFACE REPORTS. CYCLONE MOVING EAST SOUTHEAST AT ABOUT 29 KNOTS. MAXIMUM 10-MINUTE AVERAGE WINDS NEAR THE CENTRE ESTIMATED AT ABOUT 100 KNOTS. EXPECT WINDS OVER 63 KNOTS WITHIN 30 NAUTICAL MILES IN NE QUADRANT AND WITHIN 80 NAUTICAL MILES IN SE QUADRANT AND WITHIN 70 NAUTICAL MILES IN SW QUADRANT AND WITHIN 30 NAUTICAL MILES IN NW QUADRANT EXPECT WINDS OVER 47 KNOTS WITHIN 90 NAUTICAL MILES IN NE QUADRANT AND WITHIN 120 NAUTICAL MILES IN SE QUADRANT AND WITHIN 100 NAUTICAL MILES IN SW QUADRANT AND WITHIN 70 NAUTICAL MILES IN NW QUADRANT ABOVE 33 KNOTS WITHIN 150 NAUTICAL MILES IN NE QUADRANT AND WITHIN 180 NAUTICAL MILES IN SE QUADRANT AND WITHIN 160 NAUTICAL MILES IN SW QUADRANT AND WITHIN 100 NAUTICAL MILES IN NW QUADRANT. ORGANISATION GOOD WITH EMBEDED LLCC ON SATELLITE IMAGERY. SYSTEM LIES JUST SOUTH OF UPPER RIDGE WITH GOOD FLOW. SYSTEM REMAINS UNDER STRONG UPPER DIVERGENCE WITH MODERATE TO HIGH SHEAR. CYCLONIC CIRCULATIONS EXTEND UPTO 300HPA. SST IS AROUND 27 DEGREES CELSIUS. CYCLONE IS BEING STEERED SOUTHEAST ALONG THE PERIPHERY OF THE SUBTROPICAL RIDGE LOCATED TO THE EAST-NORTHEAST OF THE SYSTEM.