From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Mon Dec 27 13:26:51 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 oBR5QnR5002394 for ; Mon, 27 Dec 2010 13:26:50 +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 oBQCI5a7000588; Sun, 26 Dec 2010 23:26:30 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4888156 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sun, 26 Dec 2010 23:26:30 -0600 Received: from relay10.cites.uiuc.edu (relay10.cites.uiuc.edu [128.174.196.10]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id oBR5QUpO003195 for ; Sun, 26 Dec 2010 23:26:30 -0600 (CST) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay10.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id oBR5QNk1021015 for ; Sun, 26 Dec 2010 23:26:30 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id ABE873FE0080; Sun, 26 Dec 2010 23:26:23 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101227052623.ABE873FE0080@weather3.admin.niu.edu> Date: Sun, 26 Dec 2010 23:26:23 -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 785 ATHW40 PHFO 270525 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0520 UTC MON DEC 27 2010 BASED ON DATA THROUGH 0430 UTC DECEMBER 27 2010 WATER VAPOR IMAGERY LATE THIS AFTERNOON SHOWS AN UPPER LEVEL TROUGH 880 MILES WEST NORTHWEST OF KAUAI. THE POINTS OF THE TROUGH AXIS ARE AS FOLLOWS...30N169W TO 24N175W TO 15N179W. THE AXIS EXTENDS FURTHER TO THE NORTH TO AN UPPER LEVEL LOW AT 37N163W. MULTILAYERED CLOUDS OCCUPY THE AREA BETWEEN THE TROUGH AND KAUAI AND FROM 30N TO 20N. THERE ARE POCKETS OF EMBEDDED THUNDERSTORMS...ONE OF WHICH IS LOCATED CLOSE TO KAUAI. THE 630 PM HST SATELLITE IMAGERY SHOWS A LINE OF CUMULONIMBUS CLOUDS /CB/...AND OR THUNDERSTORMS...WITHIN 60 NM EITHER SIDE OF A LINE FROM 25N160W TO 19N167W...OR 70 MILES NORTHWEST OF KAUAI. THE TOPS OF THE CB/S ARE AROUND 41000 FEET. SOUTHWEST WINDS EAST OF THE TROUGH HAVE AN AREA OF MAXIMUM WIND SPEED POSITIONED TO THE NORTHWEST OF KAUAI. TO THE WEST OF THE UPPER TROUGH...IS THE NOSE OF A STRONG JET STREAM OF 135 MPH. ALTOGETHER...THE UPPER TROUGH IS ADVANCING EASTWARD AT ABOUT 12 MPH...AND APPEARS TO BE DEEPENING SOUTH OF 20N. A LARGE POOL OF TROPICAL MOISTURE...LYING IN WAIT BETWEEN 17N AND 08N FROM 162W TO 175W...OR 650 MILES SOUTHWEST OF KAUAI...MAY PLAY A ROLE LATER ON ON THE ISLAND/S WEATHER SHOULD THE UPPER LEVEL TROUGH DEEPENS FURTHER. ALSO...THE SATELLITE IMAGERY AT SUNSET...SHOWS THE ISLANDS WEST OF MOLOKAI BEING INFLUENCED BY VARIOUS TYPE OF CLOUDS FROM CIRRUS TO SCATTERED CUMULUS CLOUDS...INCLUDING AN ISOLATED CB/S WITH TOPS TO 35000 FEET. PATCHES OF CIRRUS CLOUDS ARE PASSING THROUGH THE REST OF THE STATE WITH ONLY A SMALL HANDFUL OF LOW CLOUDS HERE AND THERE. WEATHER RADAR IS DETECTING LITTLE SHOWER ACTIVITY FROM OAHU EASTWARD. HOWEVER...MORE CIRRUS CLOUDS ARE HEADING IN OUR DIRECTION FROM THE SOUTH. SO...LOOK FOR INCREASING HIGH CLOUDS THIS EVENING. ANOTHER ITEM WORTH MENTIONING...A DRY AIR MASS HAS SETTLED OVER MIDWAY ATOLL AND PARTS OF THE NORTHWEST HAWAIIAN ISLANDS REFUGE... OR THE AREA WEST OF THE UPPER LEVEL TROUGH. PATCHY STABLE STRATOCUMULUS CLOUDS ARE NOTED HERE. THE LOW LEVEL WIND FLOW OVER THE SMALLER OF THE MAIN HAWAIIAN ISLANDS IS OUT OF THE SOUTH AT 10 TO 20 MPH...WHILE THE BIG ISLAND IS EXPERIENCING SOUTHEAST OF 10 TO 15 MPH. LOW CLOUD COVERAGE IS MINIMAL WITHIN 160 MILES NORTHEAST OF MAUI AND THE BIG ISLAND. SCATTERED TO BROKEN LOW CLOUDS ARE CLOSING IN ON THE BIG ISLAND FROM THE SOUTH AND SOUTHEAST HOWEVER. $$ LAU +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.