(1) AN AREA OF CONVECTION (INVEST 94W) HAS PERSISTED NEAR 9.6N
158.3E, APPROXIMATELY 147 NM WEST OF THE UJELANG ATOLL. ANIMATED
MULTISPECTRAL SATELLITE IMAGERY AND A PARTIAL 282317Z ASCAT METOP-B
DEPICTS A BROAD CENTER OF BUILDING CONVECTION OVER A FULLY OBSCURED
CIRCULATION WITH 15 KNOT WINDS TO THE NORTH EAST. UPPER LEVEL ANALYSIS
INDICATES THAT 94W IS IN A FAVORABLE ENVIRONMENT FOR DEVELOPMENT WITH
MODERATE VERTICAL WIND SHEAR (15-20 KTS), DIVERGENCE ALOFT, DUAL
CHANNEL UPPER AIR OUTFLOW TO THE NORTH EAST AND SOUTH, WITH WARM SEA
SURFACE TEMPERATURES (30C). GLOBAL MODELS ARE IN GOOD AGREEMENT THAT
94W WILL CONTINUE TO TRACK NORTHEAST AND DEVELOP OVER THE NEXT 48
HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 13 TO 17
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1006 MB. THE
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN
THE NEXT 24 HOURS IS LOW.
熱帯低気圧 b
2023年08月29日22時25分発表
29日21時の実況
種別 熱帯低気圧
大きさ -
強さ -
存在地域 マーシャル諸島
中心位置 北緯11度10分 (11.2度)
東経156度40分 (156.7度)
進行方向、速さ 西北西 ゆっくり
中心気圧 1006 hPa
最大風速 15 m/s (30 kt)
最大瞬間風速 23 m/s (45 kt)
30日21時の予報
種別 台風
強さ -
存在地域 トラック諸島近海
予報円の中心 北緯13度35分 (13.6度)
東経153度50分 (153.8度)
進行方向、速さ 北西 15 km/h (9 kt)
中心気圧 1000 hPa
中心付近の最大風速 18 m/s (35 kt)
最大瞬間風速 25 m/s (50 kt)
予報円の半径 130 km (70 NM)
31日21時の予報
種別 台風
強さ -
存在地域 南鳥島近海
予報円の中心 北緯17度55分 (17.9度)
東経152度05分 (152.1度)
進行方向、速さ 北北西 20 km/h (12 kt)
中心気圧 996 hPa
中心付近の最大風速 20 m/s (40 kt)
最大瞬間風速 30 m/s (60 kt)
予報円の半径 200 km (110 NM)
01日21時の予報
種別 台風
強さ -
存在地域 南鳥島近海
予報円の中心 北緯22度20分 (22.3度)
東経148度10分 (148.2度)
進行方向、速さ 北西 25 km/h (14 kt)
中心気圧 996 hPa
中心付近の最大風速 20 m/s (40 kt)
最大瞬間風速 30 m/s (60 kt)
予報円の半径 260 km (140 NM)
02日21時の予報
種別 台風
強さ -
存在地域 小笠原近海
予報円の中心 北緯27度25分 (27.4度)
東経143度10分 (143.2度)
進行方向、速さ 北西 30 km/h (17 kt)
中心気圧 996 hPa
中心付近の最大風速 20 m/s (40 kt)
最大瞬間風速 30 m/s (60 kt)
予報円の半径 330 km (180 NM)
03日21時の予報
種別 台風
強さ -
存在地域 日本の南
予報円の中心 北緯30度10分 (30.2度)
東経135度00分 (135.0度)
進行方向、速さ 西北西 35 km/h (19 kt)
中心気圧 998 hPa
中心付近の最大風速 18 m/s (35 kt)
最大瞬間風速 25 m/s (50 kt)
予報円の半径 440 km (240 NM)
(1) THE AREA OF CONVECTION (INVEST 94W) PREVIOUSLY LOCATED NEAR
9.6N 158.3E IS NOW LOCATED NEAR 11.1N 154.7E, APPROXIMATELY 597 NM
EAST OF ANDERSEN AFB. ANIMATED MULTISPECTRAL INFRARED IMAGERY AND A
291151Z GMI 91GHZ MICROWAVE PASS DEPICT DEEP CONVECTIVE LINES ON THE
EAST- AND WESTERN FLANKS, WRAPPING INTO A MOSTLY OBSCURED LOW LEVEL
CIRCULATION CENTER (LLCC). A 290130Z SCATTEROMETRY PASS REVEALED 15-
20KT WINDS SURROUNDING AN ELONGATED AREA OF ROTATION. ENVIRONMENTAL
ANALYSIS REVEALS A FAVORABLE CONDITIONS FOR INTENSIFICATION DUE TO
LOW (10-15KT) VWS, WARM (30C) SSTS, AND GOOD POLEWARD AND EQUATORWARD
OUTFLOW. MODELS AGREE THAT 94W WILL INTENSIFY ALONG A NORTHERLY TRACK
BEFORE RECURVING TO THE NORTHWEST AROUND THE NORTHERN MARIANAS
ISLANDS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 18 TO 23
KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1004 MB.
THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE
WITHIN THE NEXT 24 HOURS IS UPGRADED TO MEDIUM.