From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Mon Dec 20 13:32:19 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 oBK5WItJ008064 for ; Mon, 20 Dec 2010 13:32:19 +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 oBJJXeha022691; Sun, 19 Dec 2010 23:31:43 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4827585 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sun, 19 Dec 2010 23:31:43 -0600 Received: from relay07.cites.uiuc.edu (relay07.cites.uiuc.edu [128.174.4.73]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id oBK5VgpL019219 for ; Sun, 19 Dec 2010 23:31:42 -0600 (CST) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay07.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id oBK5VaMq009472 for ; Sun, 19 Dec 2010 23:31:42 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 6B5BC3FE0034; Sun, 19 Dec 2010 23:31:35 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101220053136.6B5BC3FE0034@weather3.admin.niu.edu> Date: Sun, 19 Dec 2010 23:31:35 -0600 Reply-To: wxmaster@COX.NET Sender: WX-TROPL Tropical Storm and Hurricane WX products From: LDM Weather Subject: Central Pacific: Satellite Interpretation Message To: WX-TROPL@LISTSERV.ILLINOIS.EDU Precedence: list 414 ATHW40 PHFO 200530 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0530 UTC MON DEC 20 2010 BASED ON DATA THROUGH 0500 UTC DECEMBER 20 2010 THE HAWAIIAN ISLANDS REMAINED UNDER A SHROUD OF MULTI-LAYERED CLOUDS THIS SUNDAY EVENING. THESE CLOUDS THAT WERE COVERING THE ISLANDS WERE PART OF A LARGE SWATH OF SIMILAR CLOUDS THAT COVERED MUCH OF THE REGION FROM THE ISLANDS WEST TOWARD THE INTERNATIONAL DATELINE. THE BULK OF THE CLOUD MASS WAS WITHIN A TRIANGULAR SHAPED REGION. THE SOUTH EDGE OF THIS REGION RAN FROM 08N 180E TO 25N 140W. THE WEST EDGE EXTENDED FROM 11N 180E TO 22N 170W TO 26N 180E TO 30N 180E. THE NORTH EDGE WAS ROUGHLY ALONG 30N LATITUDE FROM THE DATELINE THROUGH 140W LONGITUDE. WATER VAPOR IMAGERY SHOWED A MID TO UPPER LEVEL LOW NEAR 26N 175W WAS MOVING SLOWLY NORTHEAST AND SHOWING SOME SLIGHT SIGNS OF WEAKENING. HIDDEN BENEATH THE MASS OF CLOUDS WAS A LOW LEVEL CONVERGENCE ZONE ALONG WHICH MUCH OF THE UNSTABLE...WET WEATHER WAS OCCURRING. THE LOW LEVEL CONVERGENCE ZONE EXTENDED ROUGHLY FROM 09N 180E TO 15N 170W TO 20N 167W TO 28N 168W. ISOLATED THUNDERSTORMS WERE FORMING ALONG THIS CONVERGENCE ZONE MAINLY FROM 09N TO 22N LATITUDES. THE COLDEST CLOUD TOPS NEAR THE THUNDERSTORMS WERE -71 DEGREES CELSIUS WHICH RELATED TO HEIGHTS OF NEARLY 45000 FEET. ANOTHER WEAKER AREA OF LOW LEVEL CONVERGENCE...AS EVIDENCE BY THE FLOW OF LOW CLOUDS ON EARLIER VISIBLE IMAGERY...WAS ROUGHLY FROM 17N 158W TO NEAR 24N 157W. THIS CONVERGENCE ZONE RAN NORTH TO SOUTH ACROSS THE STATE. AN ISOLATED THUNDERSTORM OR TWO WAS NOTED SOUTH OF THE STATE. ONE STORM ABOUT 55 MILES SOUTH-SOUTHWEST OF MAUI AT 7 PM. THE STORMS IN THE AREA WERE DRIFTING TOWARD EAST-NORTHEAST WHILE LOWER CLOUDS AND SHOWERS WERE MOVING TOWARD THE NORTH. A WEAK FRONT EXTENDED THROUGH 25N 140W TO 25N 150W TO NEAR 26N 160W. THE FRONT WAS DRIFTING SLOWLY SOUTHWARD. THE ASSOCIATED CLOUD BAND NORTH OF THE FRONT WAS JUST OVER 300 MILES WIDE. A WEAK OUT OF SEASON TROPICAL STORM DEVELOPED NEAR THE DATELINE AROUND 20N RECENTLY. CURRENTLY THE STORM WAS NEAR 20N 179W AND MOVING EAST-NORTHEAST NEAR 15 MILES AN HOUR. $$ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.