From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Sat Oct 23 21:43:33 2010 Received: from vacuum.cso.uiuc.edu (vacuum.cso.uiuc.edu [128.174.5.113]) by cozumel.ust.hk (8.13.8/8.13.8) with ESMTP id o9NDhWIv020895 for ; Sat, 23 Oct 2010 21:43:32 +0800 Received: from vacuum.cso.uiuc.edu (vacuum.cso.uiuc.edu [128.174.5.113]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id o9N518Dn021767; Sat, 23 Oct 2010 08:43:20 -0500 (CDT) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4009767 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sat, 23 Oct 2010 08:43:20 -0500 Received: from relay09.cites.uiuc.edu (relay09.cites.uiuc.edu [128.174.4.86]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id o9NDhKIO027832 for ; Sat, 23 Oct 2010 08:43:20 -0500 (CDT) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay09.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id o9NDhDkK025147 for ; Sat, 23 Oct 2010 08:43:19 -0500 (CDT) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 4AB32108B0002; Sat, 23 Oct 2010 08:43:10 -0500 (CDT) X-Proofpoint-Spam-Reason: safe Message-ID: <20101023134313.4AB32108B0002@weather3.admin.niu.edu> Date: Sat, 23 Oct 2010 08:43:10 -0500 Reply-To: wxmaster@COX.NET Sender: WX-TROPL Tropical Storm and Hurricane WX products From: SIU Weather Processor Subject: Pacific-NW: 1. Tropical Depression 17w (seventeen) Warning Nr 008 To: WX-TROPL@LISTSERV.ILLINOIS.EDU Precedence: list WTPN33 PGTW 231500 MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/TROPICAL CYCLONE WARNING// RMKS/ 1. TROPICAL DEPRESSION 17W (SEVENTEEN) WARNING NR 008 03 ACTIVE TROPICAL CYCLONES IN NORTHWESTPAC MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE WIND RADII VALID OVER OPEN WATER ONLY --- WARNING POSITION: 231200Z --- NEAR 22.8N 154.9E MOVEMENT PAST SIX HOURS - 055 DEGREES AT 10 KTS POSITION ACCURATE TO WITHIN 060 NM POSITION BASED ON CENTER LOCATED BY A COMBINATION OF SATELLITE AND EXTRAPOLATION PRESENT WIND DISTRIBUTION: MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER REPEAT POSIT: 22.8N 154.9E --- FORECASTS: 12 HRS, VALID AT: 240000Z --- 24.3N 156.7E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER VECTOR TO 24 HR POSIT: 035 DEG/ 13 KTS --- 24 HRS, VALID AT: 241200Z --- 26.4N 158.4E MAX SUSTAINED WINDS - 020 KT, GUSTS 030 KT WIND RADII VALID OVER OPEN WATER ONLY DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER --- REMARKS: 231500Z POSITION NEAR 23.2N 155.4E. TROPICAL DEPRESSION (TD) 17W (SEVENTEEN), LOCATED APPROXIMATELY 745 NM EAST-SOUTHEAST OF IWO TO, JAPAN, HAS TRACKED NORTHEASTWARD AT 10 KNOTS OVER THE PAST SIX HOURS. ANIMATED INFRARED SATELLITE IMAGERY SHOWS THE CONVECTION ASSOCIATED WITH THE SYSTEM HAS WEAKENED AS THE EXPOSED LOW LEVEL CIRCULATION CENTER (LLCC) ACCELERATED AND FURTHER OPENED DISTANCE FROM THE MAIN CONVECTION. UPPER LEVEL ANALYSIS INDICATES THE SYSTEM IS JUST SOUTH OF A DEEP-LAYERED SUBTROPICAL RIDGE TO THE NORTH THAT IS CAUSING MODERATE EASTERLY VERTICAL WIND SHEAR OVER THE SYSTEM. IN CONTRAST, THE LLCC IS BEING STEERED NORTHEASTWARD BY A LOW LEVEL RIDGE TO THE SOUTHEAST. DUE TO THE CONVECTION BEING DECOUPLED FROM THE LLCC, TD 17W IS EXPECTED TO DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE OVER WATER WITHIN THE NEXT 12 HOURS. THIS IS THE FINAL WARNING ON THIS SYSTEM BY THE JOINT TYPHOON WARNING CENTER (NAVMARFCSTCEN). THE SYSTEM WILL BE CLOSELY MONITORED FOR SIGNS OF REGENERATION. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 231200Z IS 12 FEET. REFER TO TROPICAL DEPRESSION 16W (SIXTEEN) WARNINGS (WTPN32 PGTW) FOR SIX-HOURLY UPDATES.// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ To unsubscribe from WX-TROPL send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with "unsub wx-tropl" in the body of your message. For help with WX-TROPL write to cnovy@cox.net. For more information on tropical weather products, see the NHC Homepage at http://www.nhc.noaa.gov.