From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Sun Sep 26 02:32:50 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 o8PIWngD029195 for ; Sun, 26 Sep 2010 02:32:50 +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 o8P50RQF019148; Sat, 25 Sep 2010 13:32:34 -0500 (CDT) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 3587137 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sat, 25 Sep 2010 13:32:33 -0500 Received: from relay02.cites.uiuc.edu (relay02.cites.uiuc.edu [128.174.196.4]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id o8PIWXtM017246 for ; Sat, 25 Sep 2010 13:32:33 -0500 (CDT) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay02.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id o8PIWQ8G003763 for ; Sat, 25 Sep 2010 13:32:33 -0500 (CDT) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id C464C405001E; Sat, 25 Sep 2010 13:32:26 -0500 (CDT) X-Spam-Score: 0 X-Spam-Details: rule=no-quarantine_notspam policy=no-quarantine score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=1 classifier=spam adjust=0 reason=mlx engine=5.0.0-1005130000 definitions=main-1009250107 X-Spam-OrigSender: ldm@weather3.admin.niu.edu X-Spam-Bar: Message-ID: <20100925183226.C464C405001E@weather3.admin.niu.edu> Date: Sat, 25 Sep 2010 13:32:26 -0500 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 285 ATHW40 PHFO 251832 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1830 UTC SAT SEP 25 2010 BASED ON DATA THROUGH 1800 UTC SEPTEMBER 25 2010 A FRONT PUSHING SOUTHWARD ACROSS THE NORTHERN FRINGES OF THE AREA IS WEAKENING THE TRADE WIND FLOW ACROSS THE MAIN HAWAIIAN ISLANDS. THE RAGGED FRONT IS COMPRISED OF A 175 MILE-WIDE BAND OF SCATTERED TO BROKEN CUMULUS CLOUDS STRETCHING ALONG 30N154W...27N164W...AND 29N176W. THE FRONT IS MOVING TO THE SOUTHEAST AT 12 MPH EAST OF 164W AND TO THE SOUTH AT 10 MPH WEST OF 164W. THE BROAD UPPER LEVEL TROUGH DRIVING THE FRONT COVERS A LARGE PORTION OF THE CENTRAL AND EASTERN NORTH PACIFIC...BUT ITS STRENGTH LIES WELL NORTH OF 30N... LEAVING THE PORTION OF THE FRONT SOUTH OF 30N WITH LITTLE UPPER LEVEL SUPPORT. THE FRONT HAS WEAKENED AND DISPLACED THE SUBTROPICAL RIDGE SOUTHWARD TO JUST OVER 200 MILES NORTH OF KAUAI. SCATTERED TO LOCALLY BROKEN CUMULUS CLOUDS TRAVELLING ALONG THE TRADE WIND FLOW NEAR THE MAIN HAWAIIAN ISLANDS ARE MOVING FROM THE EAST NORTHEAST AT 12 TO 15 MPH NEAR THE SMALLER ISLANDS AND AT 15 TO 18 MPH AROUND THE BIG ISLAND. UNDER THESE CONDITIONS...A RATHER TYPICAL LOW CLOUD PATTERN IS FOUND ACROSS THE ISLANDS...WITH PATCHES OF BROKEN LOW CLOUDS CONFINED TO WINDWARD SLOPES AND MOSTLY CLEAR LEEWARD SKIES. THE EXCEPTION IS THE SOUTH KONA DISTRICT OF THE LEEWARD BIG ISLAND...WHERE BROKEN LOW CLOUDS ARE OBSERVED ON LOWER SLOPES FROM KEALAKEKUA TO MILOLII. THE PATTERN ALOFT OVER THE REGION IS COMPLEX BUT WEAK. AN UPPER LOW JUST WEST OF 180 GIVES WAY TO A COMPACT UPPER HIGH CENTERED NEAR 25N168W...FOLLOWED BY A WEAK UPPER LOW JUST NORTHEAST OF THE BIG ISLAND NEAR 21N154W. FARTHER EAST A STRONG UPPER RIDGE DOMINATES. THIS ENTIRE PATTERN IS SHIFTING WESTWARD SLOWLY. THE UPPER LOW NEAR THE STATE IS LIKELY CAUSING THE CLOUD FIELD AROUND THE ISLANDS TO BE DOMINATED BY CUMULUS CLOUDS. ABOUT 130 MILES EAST OF THE BIG ISLAND...STABLE STRATOCUMULUS CLOUDS PREVAIL UNDER THE UPPER RIDGE. A WEAK TROPICAL DISTURBANCE NEAR 12N167W IS MOVING TO THE WEST SOUTHWEST AT 12 MPH...AWAY FROM THE MAIN HAWAIIAN ISLANDS. THUNDERSTORMS WITH TOPS TO 46 KFT CONTINUE TO FLARE ALONG THE NORTHERN FLANK OF THIS WEAK SYSTEM. $$ DWROE +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.