warning and summary 091800.





Warning valid 101800.





Warning is updated every 6 hours.





Storm Warning.





Developing low 990 hpa





at 38n 143e sea east of Japan moving northnortheast 25 knots.





Warm front from 38n 143e to 37n 148e 35n 151e.





Cold front from 38n 143e to 34n 145e 31n 143e 27n 139e.





Expected winds 30 to 60 knots within 900 miles of low





for next 12 hours.





Forecast position for 100600utc at 40n 145e with uncertainty of 60





miles radius.





Forecast position for 101800utc at 41n 149e with uncertainty of 100





miles radius.





Another low 1002 hpa at 43n 138e





moving northnortheast 15 knots.





Gale Warning.





Northerly to northeasterly winds 30 to 40 knots prevailing over South





China Sea.





Gale Warning.





Developing low 1002 hpa





at 47n 174e sea south of Aleutians moving southsoutheast 10 knots.





Winds 30 to 35 knots within 400 miles of low.





Gale Warning.





Northerly to northwesterly winds 30 to 35 knots prevailing over





Yellow Sea.





Gale Warning.





Northerly to northwesterly winds 30 to 35 knots prevailing over





waters bounded by 33n 130e 30n 131e 25n 127e 25n 122e 26n 120e 30n





122e 33n 121e 33n 130e.





Gale Warning.





Northerly to northeasterly winds 30 to 35 knots prevailing over





waters bounded by 25n 127e 20n 132e 15n 125e 14n 122e 18n 122e 19n





121e 22n 121e 25n 122e 25n 127e.





Summary.





Low 1020 hpa at 53n 154e almost stationary.





High 1022 hpa at 46n 157e ESE 10 kt.





High 1018 hpa at 32n 160e east 15 kt.





High 1014 hpa at 24n 176e east 25 kt.










Japan Meteorological Agency.=