From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Tue Dec 21 20:33:49 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 oBLCXmRY018799 for ; Tue, 21 Dec 2010 20:33:48 +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 oBKM1r38022691; Tue, 21 Dec 2010 06:33:32 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4845243 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Tue, 21 Dec 2010 06:33:32 -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 oBLCXV2C021382 for ; Tue, 21 Dec 2010 06:33:31 -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 oBLCXPOF004788 for ; Tue, 21 Dec 2010 06:33:31 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 6FDFE3FE0004; Tue, 21 Dec 2010 06:33:25 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101221123325.6FDFE3FE0004@weather3.admin.niu.edu> Date: Tue, 21 Dec 2010 06:33:25 -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 629 ATHW40 PHFO 211233 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1230 UTC TUE DEC 21 2010 BASED ON DATA THROUGH 1200 UTC DECEMBER 21 2010 UNSTABLE WEATHER CONTINUED TO SURROUND THE HAWAIIAN ISLANDS EARLY THIS TUESDAY MORNING. ISOLATED THUNDERSTORMS WERE CONTINUALLY FORMING IN THE AREA GENERALLY FROM 17N TO 28N BETWEEN 142W AND 172W. DIVERGING WINDS IN THE UPPER LEVELS OF THE ATMOSPHERE AND CONVERGING WINDS NEAR THE SURFACE WERE PROVIDING THE INSTABILITY NEEDED FOR THE UNSTABLE WEATHER. AND THE ABUNDANCE OF MOISTURE PRESENT IN THE AIR IN THIS REGION WAS ALSO A KEY FACTOR. A FRONTAL BOUNDARY EXTENDING FROM SOUTHERN CALIFORNIA PASSED THROUGH 20N 140W TO 20N150W TO JUST NORTHEAST OF THE ISLAND CHAIN. THE ASSOCIATED CLOUD BAND ALONG THE FRONT WAS ABOUT 180 MILES WIDE AND CONSISTED BROKEN TO OVERCAST LAYERED CLOUDS. THE FRONT CONTINUED TO DRIFT SLOWLY SOUTHWARD. A THICK BUT FAIRLY NARROW STREAM OF OVERCAST CIRRUS CLOUDS EXTENDED FROM 13N 166W NORTHEASTWARD TO THE BIG ISLAND. A CLEAR AREA SAT BETWEEN THIS STREAM OF CIRRUS...THE HAWAIIAN ISLANDS...AND A CLUSTER OF THUNDERSTORMS IMMEDIATELY WEST OF A LINE FROM 21N 163W TO 17N 166W. OFF IN THE DISTANCE...A WEAKENING TROPICAL STORM OMEKA WAS NEAR 27N 173.5W AT 2 AM. THIS OUT OF SEASON TROPICAL CYCLONE MOVING NORTH-NORTHEASTWARD. $$ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.