From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Thu Dec 9 02:29:17 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 oB8ITGWC028028 for ; Thu, 9 Dec 2010 02:29:17 +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 oB860fbx014075; Wed, 8 Dec 2010 12:29:01 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4685649 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Wed, 8 Dec 2010 12:29:01 -0600 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 oB8IT085008171 for ; Wed, 8 Dec 2010 12:29:00 -0600 (CST) 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 oB8ISsBx015301 for ; Wed, 8 Dec 2010 12:29:00 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 7EE623FE0876; Wed, 8 Dec 2010 12:28:48 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101208182848.7EE623FE0876@weather3.admin.niu.edu> Date: Wed, 8 Dec 2010 12:28:48 -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 344 ATHW40 PHFO 081828 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1830 UTC WED DEC 08 2010 BASED ON DATA THROUGH 1800 UTC DECEMBER 08 2010 A SURFACE FRONT 375 MILES NORTH OF KAUAI HAS DISPLACED THE SUBTROPICAL RIDGE OVER THE MAIN HAWAIIAN ISLANDS...WHERE LIGHT WINDS AND MOSTLY CLEAR SKIES DOMINATE. THE NEARLY STATIONARY SURFACE FRONT IS MARKED BY A 250 MILE WIDE BAND OF BROKEN LAYERED CLOUDS CENTERED ALONG 30N150W...25N165W... AND 17N177W. ISOLATED EMBEDDED THUNDERSTORMS RISE AS HIGH AS 50000 FT ALONG THE FRONT...WITH THE GREATEST AMOUNT OF THUNDERSTORMS FOUND WEST OF 165W. WHILE A BROAD AND DEEP UPPER LEVEL TROUGH OCCUPIES MUCH OF THE NORTHEAST PACIFIC...A SMALLER UPPER LEVEL TROUGH MOVING TO THE EAST NORTHEAST AROUND 20 MPH ALONG 30N174W AND 10N180 IS PROVIDING THE TRIGGER FOR THE ENHANCED THUNDERSTORM ACTIVITY ALONG THE FRONT WEST OF 165W. THE UPPER TROUGH IS ALSO PRODUCING ISOLATED THUNDERSTORMS JUST EAST OF MIDWAY ATOLL. THE FRONT HAS DISPLACED THE NEARLY WEST TO EAST ORIENTED LOW LEVEL RIDGE OVER OAHU. AS A RESULT...SCATTERED LOW CLOUDS ARE MOVING FROM THE SOUTH SOUTHWEST AT LESS THAN 10 MPH NEAR KAUAI...WHILE FEW LOW CLOUDS ARE TRAVELLING FROM THE SOUTH SOUTHEAST NEAR OAHU AND MAUI COUNTY. THE FLOW NEAR KAUAI WAS STRONG ENOUGH TO OVERPOWER LAND BREEZES ON THE SOUTHWEST SIDE OF THE ISLAND...PRODUCING BROKEN LOW CLOUDS OVER THE TERRAIN. ELSEWHERE ON KAUAI AND THE REST OF THE SMALLER ISLANDS...MOSTLY CLEAR SKIES PREVAIL. ON THE BIG ISLAND... LAND BREEZES HAVE PRODUCED CLEAR SKIES OVER ALL AREAS EXCEPT FOR THE SOUTHEAST SLOPES OF PUNA...WHERE SOUTHEASTERLY LOW LEVEL FLOW IS PUSHING ASHORE A SMALL AREA OF BROKEN LOW CLOUDS. WATER VAPOR IMAGERY SHOWS AN AREA OF MID LEVEL SUBSIDENCE OVER AND EAST OF THE BIG ISLAND AND MAUI COUNTY BEING ERODED BY THE COMBINED EFFECTS OF THE BROAD UPPER LEVEL TROUGH OVER THE NORTHEAST PACIFIC AND THE UPPER LEVEL TROUGH APPROACHING FROM THE WEST. A WEAK SURFACE TROUGH IS PASSING 375 MILES SOUTH OF KAUAI ROUGHLY ALONG 18N160W AND 13N160W. DEVELOPING UPPER LEVEL TROUGHING OVER THE REGION IS TRIGGERING AN ISOLATED THUNDERSTORM ALONG THE TROUGH NEAR 16N160W. A SMALL AREA BROKEN LOW LEVEL CLOUDS EXTEND NORTH OF THE TROUGH INTO HAWAIIAN OFFSHORE WATERS. $$ 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.