From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Sun Dec 12 13:41:51 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 oBC5fnfQ021218 for ; Sun, 12 Dec 2010 13:41:50 +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 oBABvRSs018803; Sat, 11 Dec 2010 23:41:15 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4732425 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sat, 11 Dec 2010 23:41:15 -0600 Received: from relay03.cites.uiuc.edu (relay03.cites.uiuc.edu [128.174.4.69]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id oBC5fEJY008005 for ; Sat, 11 Dec 2010 23:41:14 -0600 (CST) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay03.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id oBC5f8iZ013850 for ; Sat, 11 Dec 2010 23:41:14 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 090683FE0881; Sat, 11 Dec 2010 23:41:07 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101212054108.090683FE0881@weather3.admin.niu.edu> Date: Sat, 11 Dec 2010 23:41:07 -0600 Reply-To: wxmaster@COX.NET Sender: WX-TROPL Tropical Storm and Hurricane WX products From: SIU Weather Processor Subject: Pacific-NW: Subj/significant Tropical Weather Advisory For The Western And To: WX-TROPL@LISTSERV.ILLINOIS.EDU Precedence: list ABPW10 PGTW 120600 MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS/120600Z-130600ZDEC2010// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 8.2N 113.7E IS NOW LOCATED NEAR 9.5N 112.7E, APPROXIMATELY 360 NM EAST OF HO CHI MINH, VIETNAM. ANIMATED MULTISPECTRAL SATELLITE IMAGERY DEPICTS AN EXPOSED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH WEAK DEEP CONVECTIVE BANDING CONFINED TO THE WESTERN SEMI-CIRCLE. AN 112326Z AMSU IMAGE ALSO SUPPORTS WEAK CONVECTIVE BANDING WITH ISOLATED BURSTS OF DEEP CONVECTION DISPLACED WEST OF THE CENTER. THE SYSTEM REMAINS EMBEDDED WITHIN A MARGINAL ENVIRONMENT, POSITIONED SOUTH OF THE UPPER-LEVEL SUBTROPICAL RIDGE AXIS, WITH LIGHT TO MODERATE, EASTERLY VERTICAL WIND SHEAR AND DIFFLUENCE ALOFT. THE LLCC IS LOCATED ALONG THE SOUTHERN EXTENT OF A WEAKENING NORTHEASTERLY SURGE, WHICH APPEARS TO BE MAINTAINING 15-20 KNOT SURFACE WINDS. RECENT ASCAT SHOWED 15-20 KNOT WINDS NEAR THE CENTER. SHIP OBSERVATIONS AROUND THE PERIPHERY OF THE LLCC CONTINUE TO SUPPORT SLP VALUES NEAR 1006 MB WITH 15 KNOT WINDS. THE PRIMARY INHIBITING FACTOR APPEARS TO BE THE RELATIVELY DRY, NORTHEASTERLY FLOW ALONG THE NORTHWESTERN AND WESTERN PERIPHERY OF THE LLCC AS EVIDENT IN THE TOTAL PRECIPITABLE WATER PRODUCT. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1005 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS GOOD. (2) NO OTHER SUSPECT AREAS. 2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE.// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.