From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Sun Dec 19 15:16:37 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 oBJ7GZ80028882 for ; Sun, 19 Dec 2010 15:16:36 +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 oBI3L8Yb011741; Sun, 19 Dec 2010 01:16:18 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4820113 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sun, 19 Dec 2010 01:16:18 -0600 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 oBJ7GHBD009411 for ; Sun, 19 Dec 2010 01:16:17 -0600 (CST) 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 oBJ7GBip025433 for ; Sun, 19 Dec 2010 01:16:17 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 1DA363FE0084; Sun, 19 Dec 2010 01:16:11 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101219071611.1DA363FE0084@weather3.admin.niu.edu> Date: Sun, 19 Dec 2010 01:16:11 -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 574 ATHW40 PHFO 190715 RRA SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE...DELAYED NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0715 UTC SUN DEC 19 2010 BASED ON DATA THROUGH 0500 UTC DECEMBER 19 2010 ACCORDING TO LOOPS OF WATER VAPOR IMAGERY AND SATELLITE DERIVED UPPER LEVEL WINDS...AN UPPER TROPOSPHERIC LOW WAS CENTERED JUST EAST OF THE DATE LINE NEAR 21N 179.5W. THIS FEATURE HAS BEEN NEARLY STATIONARY DURING THE PAST 6 HOURS. EAST OF THIS UPPER LEVEL LOW...THE CORE OF A SUBTROPICAL JET EXTENDED FROM NEAR 15N 176W TO 22N 170.5W TO 30N 164W. A BROAD AREA OF OVERCAST LAYERED CLOUDS WITH RAIN AND EMBEDDED THUNDERSTORMS ASSOCIATED WITH THE DIFFLUENCE ALOFT DUE TO THIS JET WAS ABOUT 750 MILES EAST OF A LINE FROM 14N 174.5W TO 21N 171.5W TO 28N 170W. THE HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS WITHIN THIS AREA WERE ESTIMATED TO BE ABOUT 50 THOUSAND FEET. AS OF 900 PM HST SATURDAY...THE EASTERN EDGE OF THESE LAYERED CLOUDS AND PRECIPITATION WERE OVER THE EXTREME WESTERN HAWAIIAN ISLANDS EARLY THIS EVENING. RADAR REFLECTIVITY DATA INDICATED NUMEROUS SHOWERS...SOME WITH LOCALLY HEAVY RAINFALL WERE OVER NIIHAU AND ALONG THE SOUTHWESTERN SHORELINE OF KAUAI. THESE SHOWERS...WERE SPREADING NORTHWARD AT ALMOST 20 MPH. ANOTHER AREA OF PRECIPITATION WAS LOCATED OVER THE SOUTHERN END OF THE KAUAI CHANNEL. THERE WERE MAINLY ISOLATED SHOWERS OVER THE COASTAL WATERS SOUTH OF OAHU. BROKEN CIRRUS CLOUDS WERE OBSCURING THE LOW CLOUDS OVER THE REST OF THE STATE IN INFRARED SATELLITE IMAGERY. ELSEWHERE...A GALE LOW WAS LOCATED JUST WEST OF THE INTERNATIONAL DATELINE NEAR 21.5N 179.5E...OR ABOUT 500 MILES SOUTH SOUTHWEST OF MIDWAY ATOLL. THIS SYSTEM IS MOVING TOWARD THE SOUTH AT LESS 10 MPH...AND CONTINUES TO EXHIBIT TROPICAL CHARACTERISTICS AS IT MOVES OVER WARMER WATERS. THIS SYSTEM IS MAINTAINING A WELL DEFINED AND PERSISTENT AREA OF THUNDERSTORMS NEAR ITS CENTER. THE HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS WITHIN THIS AREA WERE ESTIMATED TO BE ABOUT 39 THOUSAND FEET. FORECAST MODELS INDICATE THIS SYSTEM WILL TURN BACK TOWARD THE SOUTHEAST OR EAST LATER TONIGHT AND SUNDAY MORNING...WHICH WILL LIKELY BRING IT BACK INTO THE CENTRAL PACIFIC HURRICANE CENTER AREA OF RESPONSIBILITY BY LATE SUNDAY. FOR ADDITIONAL INFORMATION ON THIS GALE LOW...SEE THE HIGH SEAS FORECAST ISSUED FOR THE NORTH PACIFIC OCEAN BY THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN HONOLULU...HAWAII UNDER AWIPS HEADER HSFNP...OR WMO HEADER FZPN40 PHFO. $$ HOUSTON +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 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.