From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Mon Nov 22 02:20:21 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 oALIKJPX018354 for ; Mon, 22 Nov 2010 02:20:20 +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 oALCcKa3000834; Sun, 21 Nov 2010 12:20:03 -0600 (CST) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 4453498 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Sun, 21 Nov 2010 12:20:03 -0600 Received: from relay04.cites.uiuc.edu (relay04.cites.uiuc.edu [128.174.196.5]) by vacuum.cso.uiuc.edu (8.14.2/8.14.2) with ESMTP id oALIK3Ud011734 for ; Sun, 21 Nov 2010 12:20:03 -0600 (CST) Received: from weather3.admin.niu.edu (weather3.admin.niu.edu [131.156.8.48]) by relay04.cites.uiuc.edu (8.14.4/8.14.2) with ESMTP id oALIJuRY010971 for ; Sun, 21 Nov 2010 12:20:03 -0600 (CST) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id B3CB54050028; Sun, 21 Nov 2010 12:19:56 -0600 (CST) X-Proofpoint-Spam-Reason: safe Message-ID: <20101121181956.B3CB54050028@weather3.admin.niu.edu> Date: Sun, 21 Nov 2010 12:19:56 -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 401 ATHW40 PHFO 211819 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 1830 UTC SUN NOV 21 2010 BASED ON DATA THROUGH 1800 UTC NOVEMBER 21 2010 A COMPLEX AND HIGHLY AMPLIFIED PATTERN ACROSS THE NORTH PACIFIC IS PRODUCING A WEAK TRADE WIND FLOW OVER THE MAIN HAWAIIAN ISLANDS THIS MORNING. A WEST TO EAST FLOWING JET STREAM FLOWING ALONG 30N IN THE WESTERN NORTH PACIFIC ABRUPTLY TURNS NORTHWARD NEAR 170W AS IT SLAMS INTO A STRONG UPPER LEVEL RIDGE CENTERED ALONG 150W. HOWEVER...A SMALL AMOUNT OF THE ENERGY FROM THE JET STREAM IS UNDERCUTTING THE UPPER RIDGE...SPILLING OVER THE MAIN HAWAIIAN ISLANDS...AND DROPPING INTO A CUTOFF UPPER LEVEL LOW CENTERED ABOUT 375 MILES NORTHEAST OF MAUI NEAR 24N151W. THE UPPER LEVEL LOW IS DRIFTING TO THE NORTHEAST AND IS SUPPORTING A NEARLY STATIONARY...LOW LEVEL TROUGH ALONG 25N151W AND 17N151W. BROKEN TO OVERCAST LAYERED CLOUDS ARE FOUND WITHIN 300 MILES EAST OF THE TROUGH...WHILE ISOLATED EMBEDDED THUNDERSTORMS RISE TO 46 KFT. TO THE WEST OF THE MAIN HAWAIIAN ISLANDS...A FRONT IS MOVING ALONG THE EASTERN END OF THE ZONAL JET STREAM. A RAGGED...BROKEN...150 MILE WIDE BAND OF BROKEN CLOUDS MARKING THE FRONT IS CURRENTLY LOCATED 750 MILES NORTHWEST OF KAUAI AND IS TRAVELLING TO THE EAST AROUND 25 TO 30 MPH. THIS FEATURE RUNS FROM 30N168W TO 24N173W AND CONTAINS ISOLATED...EMBEDDED THUNDERSTORMS RISING TO 46 KFT. A PREFRONTAL CONVERGENCE BAND 325 MILES NORTHWEST OF KAUAI IS ALSO PRODUCING ISOLATED THUNDERSTORMS WITH TOPS TO 43 KFT WITHIN 50 MILES OF A LINE FROM 30N163W AND 24N164W. THE SYSTEMS TO THE WEST AND EAST OF THE MAIN HAWAIIAN ISLANDS ARE HOLDING SURFACE HIGH PRESSURE FAR NORTH NORTHEAST OF THE AREA... RESULTING IN A WEAK TRADE WIND FLOW. FEW TO SCATTERED LOW CLOUDS NEAR THE ISLANDS ARE TRAVELING FROM THE EAST AROUND 10 MPH... PROMOTING OVERNIGHT LAND BREEZES AND CLEAR LEEWARD SKIES. SMALL PATCHES OF BROKEN LOW CLOUDS ARE BANKED ALONG WINDWARD SECTIONS... WITH THE LEAST AMOUNT OF CLOUD COVER FOUND OVER THE BIG ISLAND. IN ADDITION...WISPS OF HIGH CLOUDS ARE PASSING OVER THE STATE AS A PORTION OF THE ABOVE MENTIONED JET STREAM SPILLS OVER THE REGION. SATELLITE-DERIVED PRECIPITABLE WATER VALUES OVER AND JUST UPWIND OF THE ISLANDS ARE RUNNING BETWEEN 1.1 TO 1.2 INCHES...SLIGHTLY BELOW NOVEMBER NORMS. $$ 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.