From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Mon Sep 13 02:29:52 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 o8CITp1t010385 for ; Mon, 13 Sep 2010 02:29:52 +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 o8CCrBbV009615; Sun, 12 Sep 2010 13:29:33 -0500 (CDT) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 3351163 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sun, 12 Sep 2010 13:29:33 -0500 Received: from relay03.cites.uiuc.edu (relay03.cites.uiuc.edu [128.174.4.69]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id o8CITWgw026490 for ; Sun, 12 Sep 2010 13:29:32 -0500 (CDT) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay03.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id o8CITPvf010805 for ; Sun, 12 Sep 2010 13:29:32 -0500 (CDT) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id DA2EC405001E; Sun, 12 Sep 2010 13:29:25 -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-1009120060 X-Spam-OrigSender: ldm@weather3.admin.niu.edu X-Spam-Bar: Message-ID: <20100912182925.DA2EC405001E@weather3.admin.niu.edu> Date: Sun, 12 Sep 2010 13:29:25 -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 575 ATHW40 PHFO 121829 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1830 UTC SUN SEP 12 2010 BASED ON DATA THROUGH 1800 UTC SEPTEMBER 12 2010 A SOMEWHAT DRY TRADE WIND FLOW IS IN PLACE OVER THE MAIN HAWAIIAN ISLANDS...WHILE AN UPPER LEVEL LOW TO THE NORTHWEST IS SENDING A RIBBON OF HIGH CLOUDS OVER PORTIONS OF THE ISLANDS. A MODERATE TRADE WIND FLOW IS PRODUCING LOW CLOUDS ACROSS MAINLY WINDWARD PORTION OF THE MAIN HAWAIIAN ISLANDS...WITH THE GREATEST AMOUNT OF LOW CLOUD COVER FOUND ACROSS WINDWARD BIG ISLAND AND ITS ADJACENT WATERS. A BATCH OF BROKEN STRATOCUMULUS WITH SOME EMBEDDED...SHOWER-BEARING CUMULUS CLOUDS MOVED OVER WINDWARD SLOPES OF THE BIG ISLAND IN THE PREDAWN HOURS AND REMAINS IN PLACE. CLOUD TOPS RISE TO AROUND 10 KFT...AND SOME OF THE MOISTURE ASSOCIATED WITH THIS FEATURE IS PRODUCING MORNING CLOUDS OVER KAU AND THE LEEWARD SLOPES SOUTH OF KAILUA-KONA. CLOUD COVER DECREASES DRAMATICALLY OVER WATERS AROUND THE SMALLER ISLANDS...REFLECTING THE RATHER DRY CONDITIONS IN THE TRADE WIND FLOW. PRECIPITABLE WATER VALUES IN THE FLOW ARE RUNNING ABOUT 80 PERCENT OF NORMAL...AND PATCHES OF BROKEN LOW CLOUDS ARE CONFINED TO WINDWARD SLOPES. INDIVIDUAL LOW CLOUDS NEAR THE ISLANDS ARE TRAVELLING FROM THE EAST AROUND 15 MPH. AN UPPER LEVEL HIGH CENTERED NEARLY 900 MILES EAST OF THE STATE IS PRODUCING STABLE CONDITIONS IN THE TRADE WIND FLOW OVER THE ISLANDS...WHILE A DEEPENING UPPER LEVEL LOW 600 MILES NORTHWEST OF KAUAI IS SENDING A RIBBON OF BROKEN HIGH CLOUDS OVER THE GARDEN ISLE. THE UPPER LOW IS CENTERED NEAR 28N167W AND IS DRIFTING EASTWARD. THE UPPER LOW IS PRODUCING A PAIR OF NEARLY STATIONARY SURFACE TROUGHS. THE WEAKER SURFACE TROUGH RUNS ALONG 30N161W TO 27N167W AND IS MARKED BY ISOLATED TOWERING CUMULUS CELLS AND THUNDERSTORMS WITH TOPS TO 38 KFT. ANOTHER...DEEPER SURFACE TROUGH IS FOUND AT THE BASE OF THE UPPER LOW ALONG 24N167W AND 21N169W. BROKEN LAYERED CLOUDS WITH EMBEDDED THUNDERSTORMS RISING TO 42 KFT ARE OBSERVED WITHIN 200 MILES EAST OF THE TROUGH. A 300 MILE-WIDE RIBBON OF BROKEN HIGH CLOUDS IS STREAMING FROM THIS AREA AND IS BEING CARRIED OVER KAUAI FOR 1200 MILES TO THE NORTHEAST ALONG A SUBTROPICAL JET ON THE FLANK OF THE UPPER LOW. TO THE SOUTH OF THE STATE...ISOLATED THUNDERSTORMS WITHIN THE ITCZ REMAIN ACTIVE BETWEEN 12N AND 09N. $$ 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.