From owner-wx-tropl@LISTSERV.ILLINOIS.EDU Wed Sep 22 13:29:50 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 o8M5Tmk5021333 for ; Wed, 22 Sep 2010 13:29:50 +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 o8M2dXD1028356; Wed, 22 Sep 2010 00:29:23 -0500 (CDT) Received: by LISTSERV.ILLINOIS.EDU (LISTSERV-TCP/IP release 14.5) with spool id 3524096 for WX-TROPL@LISTSERV.ILLINOIS.EDU; Wed, 22 Sep 2010 00:29:22 -0500 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 o8M5TLgL028626 for ; Wed, 22 Sep 2010 00:29:21 -0500 (CDT) 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 o8M5TF08024534 for ; Wed, 22 Sep 2010 00:29:21 -0500 (CDT) Received: by weather3.admin.niu.edu (Postfix, from userid 501) id 163824050020; Wed, 22 Sep 2010 00:29:15 -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-1009210268 X-Spam-OrigSender: ldm@weather3.admin.niu.edu X-Spam-Bar: Message-ID: <20100922052915.163824050020@weather3.admin.niu.edu> Date: Wed, 22 Sep 2010 00:29:15 -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 079 ATHW40 PHFO 220529 SIMHI HAWAIIAN ISLANDS SATELLITE INTERPRETATION MESSAGE NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI 0530 UTC WED SEP 22 2010 BASED ON DATA THROUGH 0500 UTC SEPTEMBER 22 2010 THE PRESENCE OF A SURFACE HIGH FAR NORTH OF KAUAI CONTINUED TO MAINTAIN MODERATE TRADE WINDS ACROSS THE HAWAIIAN ISLAND CHAIN EARLY THIS EVENING. THE LOW-LEVEL TRADE WIND FLOW WAS TRANSPORTING BROKEN LOW CLOUDS AND SCATTERED SHOWERS ASSOCIATED WITH THE REMNANTS OF AN OLD FRONTAL SYSTEM ACROSS THE COASTAL WATERS ADJACENT TO WINDWARD MAUI AND THE BIG ISLAND. THERE WERE MAINLY SCATTERED LOW CLOUDS WITH EMBEDDED ISOLATED SHOWERS ELSEWHERE ACROSS THE HAWAIIAN COASTAL WATERS. THE GENERAL MOTION OF THE LOW CLOUDS ACROSS THE WINDWARD HAWAIIAN COASTAL WATERS WAS TOWARD THE WEST AT 15 TO 20 MPH. THE HIGHEST TOPS OF THE LOW CLOUDS OVER THE OCEAN SURROUNDING THE HAWAIIAN ISLANDS WERE ESTIMATED TO BE ABOUT 8 THOUSAND FEET. AS OF 700 PM HST TUESDAY...SCATTERED TO BROKEN LOW CLOUDS WERE OVER PARTS OF KAUAI...AS WELL AS ALONG THE KOOLAU AND WAIANAE MOUNTAIN RANGES ON OAHU. SCATTERED TO LOCALLY BROKEN LOW CLOUDS WERE OVER THE EASTERN TIP OF MOLOKAI AND THE EASTERN COAST OF LANAI. ON MAUI... BROKEN TO OVERCAST LOW CLOUDS WERE ABOVE THE LOWER SLOPES OF MOUNT HALEAKALA...THE WINDWARD SHORELINES...THE WESTERN MOUNTAINS AND THE SOUTH CENTRAL VALLEY. BROKEN TO LOCALLY OVERCAST LOW CLOUDS COVERED NEARLY ALL OF THE LOWER ELEVATIONS OF THE BIG ISLAND. THE RAGGED BAND OF BROKEN CLOUDS AND SCATTERED SHOWERS ASSOCIATED WITH THE REMNANTS OF AN OLD FRONT WERE WITHIN 180 MILES SOUTH OF A LINE STARTING FROM A POINT 100 MILES NORTH OF KAHULUI ON MAUI TO 22N 152W TO 25N 147W. THE WESTERN EDGE OF THIS BAND HAS SHIFTED WESTWARD AT ABOUT 15 MPH DURING THE PAST 6 HOURS. ACCORDING TO LOOPS OF WATER VAPOR IMAGERY AND SATELLITE DERIVED UPPER LEVEL WINDS...THE AXIS OF A RELATIVELY WEAK NORTHEAST TO SOUTHWEST ORIENTED UPPER TROPOSPHERIC TROUGH EXTENDED FROM A LOW ALOFT NEAR 28N 148W TO 23.5N 157W TO 24N 160W. THIS TROUGH ALOFT HAS MOVED SLOWLY WESTWARD DURING THE PAST 6 HOURS. THIS FEATURE HAS NOT BEEN HAVING A SIGNIFICANT IMPACT ON ISLAND WEATHER THIS EVENING. HOWEVER...THE TROUGH MAY BE SUPPORTING THE RAGGED BAND OF LOW CLOUDS AND SHOWERS ASSOCIATED WITH THE REMNANTS OF THE FORMER FRONT ADJACENT TO MAUI AND THE BIG ISLAND. AN AREA OF DISORGANIZED SHOWERS AND SCATTERED THUNDERSTORMS WAS CENTERED ABOUT 530 MILES SOUTH SOUTHEAST OF HILO. AN AREA OF SHOWERS AND THUNDERSTORMS CENTERED ABOUT 500 MILES SOUTH SOUTHEAST OF HILO. CONTINUES TO SHOW SIGNS OF IMPROVED ORGANIZATION. HOWEVER...THE COVERAGE AND INTENSITY OF THE THUNDERSTORMS WITHIN THIS AREA HAS BEEN FLUCTUATING DURING THE PAST 12 HOURS. GRADUAL DEVELOPMENT OF THIS FEATURE IS POSSIBLE AS IT CONTINUES MOVING SLOWLY TOWARD THE WEST NORTHWEST AT ABOUT 10 MPH DURING THE NEXT COUPLE OF DAYS. THE CLOUDS AND DEEP CONVECTION ASSOCIATED WITH THIS SYSTEM WERE IN THE AREA FROM 10N TO 15N BETWEEN 150W AND 155W. THE HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS ASSOCIATED WITH THIS FEATURE WERE ESTIMATED TO BE ABOUT 43 THOUSAND FEET. ELSEWHERE IN THE DEEP TROPICS FAR SOUTH OF THE HAWAIIAN ISLANDS...A SURFACE TROUGH EXTENDED FROM NEAR 10.5N 140W TO 10N 145W TO 11N 149.5W. ISOLATED MODERATE THUNDERSTORMS WERE WITHIN 80 MILES SOUTH OF THIS TROUGH. THE INTERTROPICAL CONVERGENCE ZONE...OR ITCZ... EXTENDED FROM NEAR 10.5N 157.5W TO 09N 173W TO 07N 180W. SCATTERED MODERATE TO LOCALLY STRONG THUNDERSTORMS WERE WITHIN 150 MILES OF THE ITCZ WEST OF 170W...WHILE ISOLATED THUNDERSTORMS WERE WITHIN 80 MILES OF THE ITCZ EAST OF 170W. THE HIGHEST TOPS OF THE CUMULONIMBUS CLOUDS ASSOCIATED WITH THE ITCZ WERE ESTIMATED TO BE ABOUT 52 THOUSAND FEET. $$ 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.