From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Tue Sep 14 08:31:38 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 o8E0VbkF015030 for ; Tue, 14 Sep 2010 08:31:37 +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 o8DNuKMN026844; Mon, 13 Sep 2010 19:31:16 -0500 (CDT) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 3372032 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Mon, 13 Sep 2010 19:31:16 -0500 Received: from relay01.cites.uiuc.edu (relay01.cites.uiuc.edu [128.174.4.23]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id o8E0VFvV029104 for ; Mon, 13 Sep 2010 19:31:15 -0500 (CDT) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay01.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id o8E0V9UV015162 for ; Mon, 13 Sep 2010 19:31:15 -0500 (CDT) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id EF4BC405001E; Mon, 13 Sep 2010 19:31:08 -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=0 classifier=spam adjust=0 reason=mlx engine=5.0.0-1005130000 definitions=main-1009130153 X-Spam-OrigSender: ldm@weather3.admin.niu.edu X-Spam-Bar: Message-ID: <20100914003108.EF4BC405001E@weather3.admin.niu.edu> Date: Mon, 13 Sep 2010 19:31:08 -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 552 ATHW40 PHFO 140031 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0030 UTC TUE SEP 14 2010 BASED ON DATA THROUGH 0000 UTC SEPTEMBER 14 2010 SURFACE HIGH PRESSURE CENTERED JUST NORTH OF 30N IS PRODUCING A RATHER DRY TRADE WIND FLOW OVER MOST OF THE AREA...WHILE AN UPPER LEVEL LOW IS PRODUCING INSTABILITY WEST OF MAIN HAWAIIAN ISLANDS. SCATTERED TO LOCALLY BROKEN STRATOCUMULUS AND CUMULUS CLOUDS ARE MOVING ALONG THE TRADE WIND FLOW NEAR THE ISLANDS FROM THE EAST AT 15 TO 20 MPH. ONE SMALL AREA OF BROKEN LOW CLOUDS IS MOVING ACROSS THE BIG ISLAND...WHERE BROKEN TO OVERCAST LOW CLOUDS COVER ALL BUT THE IMMEDIATE LEEWARD COAST AND SUMMITS ABOVE 8500 FT. LOW CLOUD COVER DIMINISHES GREATLY AROUND THE SMALLER ISLANDS...WHERE ONLY SMALL PATCHES OF BROKEN LOW CLOUDS ARE OBSERVED ACROSS WINDWARD SLOPES. AREAS OF BROKEN LOW CLOUDS ARE ALSO FOUND ALONG THE HEATED...SHELTERED LEEWARD SLOPES DUE TO DAYTIME SEA BREEZES. STRONG HIGH PRESSURE ALOFT CENTERED NEAR 24N140W IS PRODUCING SUBSIDENCE OVER MAUI AND A VAST EXPANSE EAST OF THE STATE. PRECIPITABLE WATER VALUES IN THIS AREA ARE RUNNING AROUND 1.1 INCHES...WHICH IS ROUGHLY 80 PERCENT OF NORMAL FOR SEPTEMBER. AN UPPER LEVEL LOW CENTERED JUST OVER 600 MILES NORTHWEST OF KAUAI NEAR 27N168W IS GENERATING INSTABILITY WEST OF THE MAIN HAWAIIAN ISLANDS. THIS FEATURE IS DRIFTING WEST AND IS PRODUCING A SURFACE TROUGH...ROUGHLY ALONG 30N165W...25N172W...AND 17N174W. ISOLATED THUNDERSTORMS RISE AS HIGH AS 43 KFT WITHIN 225 MILES SOUTHEAST OF THE TROUGH. BROKEN HIGH CLOUDS ALONG THE EASTERN FLANK OF THE UPPER LOW HAVE THINNED SUBSTANTIALLY IN THE PAST 18 HOURS AND ARE NOW CONFINED TO A SMALL SHIELD NORTH OF THE MAIN HAWAIIAN ISLANDS BETWEEN 30N AND 25N FROM 158W TO 153W. TO THE SOUTH OF THE STATE...THE ITCZ REMAINS NORTH OF 10N...THOUGH NEARLY ALL OF THE THUNDERSTORM ACTIVITY IS NOW FOUND WEST OF 160W. A DEVELOPING TROUGH IN THE ITCZ IS DRIFTING WEST SLOWLY ALONG 15N163W TO 09N171W. THIS FEATURE IS MARKED BY ISOLATED THUNDERSTORMS RISING TO 51 KFT WITHIN 200 MILES TO THE SOUTHEAST OF THE TROUGH AXIS. ISOLATED THUNDERSTORMS ARE ALSO FOUND BETWEEN 12N AND 08N WEST OF 171W. $$ 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.