From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Sat Nov 20 02:31:08 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 oAJIV7fL017540 for ; Sat, 20 Nov 2010 02:31:08 +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 oAJ60odo000834; Fri, 19 Nov 2010 12:30:47 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4434937 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Fri, 19 Nov 2010 12:30:47 -0600 Received: from relay08.cites.uiuc.edu (relay08.cites.uiuc.edu [128.174.196.9]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id oAJIUlQR004636 for ; Fri, 19 Nov 2010 12:30:47 -0600 (CST) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay08.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id oAJIUeOR019093 for ; Fri, 19 Nov 2010 12:30:46 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 95124405001E; Fri, 19 Nov 2010 12:30:40 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101119183040.95124405001E@weather3.admin.niu.edu> Date: Fri, 19 Nov 2010 12:30:40 -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 955 ATHW40 PHFO 191830 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1830 UTC FRI NOV 19 2010 BASED ON DATA THROUGH 1800 UTC NOVEMBER 19 2010 WATER VAPOR IMAGERY SHOWED A NARROW BUT WELL-DEFINED UPPER LEVEL TROUGH IMMEDIATELY WEST OF KAUAI THIS MORNING. THE TROUGH AXIS STRETCHED FROM 30N 158W TO 20N 162W. THE TROUGH APPEARED TO BE ACCELERATING EASTWARD IN THE VICINITY OF KAUAI AT 25 TO 30 MILES AN HOUR. THE UPPER TROUGH WAS LYING OVER A WEAK...SOMEWHAT DECAYED FRONTAL REMNANT. THE INSTABILITY FROM THE UPPER TROUGH AND THE PRESENCE OF THE MOIST FRONTAL BOUNDARY BELOW IT WERE THE INGREDIENTS FOR THE FORMATION OF ISOLATED THUNDERSTORMS AROUND THE HAWAIIAN ISLANDS. A 275 MILES WIDE BAND OF LAYERED CLOUDS CONTAINING ISOLATED THUNDERSTORMS WAS CENTERED ALONG A LINE THROUGH 30N 154W TO NEAR 24N 156W. THUS MOST OF THIS CLOUDINESS REMAINED NORTH OF THE ISLANDS. CLOSER TO THE ISLANDS...A FEW ISOLATED THUNDERSTORMS WERE MAINLY LOCATED 110 MILES SOUTHWEST OF HONOLULU...160 MILES SOUTHWEST OF KAUAI...AND 65 MILES NORTHEAST OF MAUI. THE STORMS WERE BEING GUIDED EAST BY THE UPPER TROUGH. THE WEAK FRONTAL BOUNDARY IN THE AREA WAS DIFFICULT TO IDENTIFY VIA SATELLITE IMAGERY. BUT ONE NOTABLE LOW LEVEL FEATURE WAS A WEAK LOW LEVEL VORTEX OR CYCLONIC LOW CLOUD CIRCULATION ABOUT 75 MILES EAST-NORTHEAST OF HONOLULU OR 40 MILES NORTH OF EAST MOLOKAI. AWAY FROM THE MORE SIGNIFICANT THUNDERSTORM AREAS...ONLY A FEW PATCHES OF SCATTERED LOW CLOUDS PREVAILED OVER THE WATERS IMMEDIATELY SURROUNDING THE STATE. A 8 AM...SKIES WERE MOSTLY SUNNY OVER KAUAI...MOLOKAI AND THE BIG ISLAND THOUGH SOME OVERCAST LOW CLOUDS WERE NOTED ALONG THE WESTERN SLOPES OF THE BIG ISLAND. MAUI COUNTY ISLANDS HAD A MIX OF PARTLY CLOUDY TO MOSTLY SUNNY SKIES. OAHU WAS THE CLOUDIEST ISLAND IN THE BUNCH DUE MAINLY FROM THICK CIRRUS CLOUDS FLOWING OFF OF THE STORMS TO THE SOUTHWEST. $$ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.