000 AXNT20 KNHC 150559 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 205 PM EDT THU JUN 15 2006 TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHEASTERN SECTIONS OF SOUTH AMERICA...AND THE ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR... AND METEOROLOGICAL ANALYSIS. BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0515 UTC. ...TROPICAL WAVES... A TROPICAL WAVE IS ALONG 27W/28W SOUTH OF 14N MOVING WEST 10 TO 15 KT. ANY PRECIPITATION ASSOCIATED WITH THIS WAVE IS EMBEDDED IN THE ITCZ. A TROPICAL WAVE IS ALONG 45W/46W SOUTH OF 16N MOVING WEST 15 KT DURING THE LAST 24 HOURS. ISOLATED TO WIDELY SCATTERED MODERATE SHOWERS/LOCALLY STRONG THUNDERSTORMS ARE AT THE NORTHERN EDGE OF THE ITCZ FROM 7N TO 13N BETWEEN 40W AND 45W. A TROPICAL WAVE IS ALONG 72W/73W SOUTH OF 20N AND HAS BEEN MOVING WEST 15 TO 20 KT DURING THE LAST 24 HOURS. BROKEN TO OVERCAST MULTILAYERED CLOUDS FROM 14N TO 18N BETWEEN 72W AND 76W. SHOWERS ARE POSSIBLE IN THIS AREA. THE ITCZ... ITCZ 11N12W 8N26W 8N30W 10N44W 8N47W 4N57W. SCATTERED STRONG SHOWERS AND THUNDERSTORMS ARE FOUND BETWEEN THE AFRICA COAST AND 4N8W 4N12W 7N16W 10N19W. SCATTERED MODERATE SHOWERS TO ISOLATED STRONG THUNDERSTORMS ARE FOUND FROM 4N TO 6N BETWEEN 18W AND 21W. SHOWERS AND THUNDERSTORMS FROM SIX HOURS AGO FROM 10N TO 15N BETWEEN THE AFRICA COAST AND 22W HAVE BEEN DISSIPATING DURING THE LAST SIX HOURS. ISOLATED MODERATE SHOWERS ARE WITHIN 30 NM ON EITHER SIDE OF 12N25W 10N28W 8N32W 5N35W. SCATTERED STRONG SHOWERS AND THUNDERSTORMS ARE FOUND FROM 1N TO 3N BETWEEN 47W AND 51W. ...DISCUSSION... THE GULF OF MEXICO...THE NORTHWESTERN CARIBBEAN SEA... AND THE ATLANTIC OCEAN NORTH OF 25N WEST OF 55W... THE NORTHWESTERN GULF OF MEXICO MIDDLE TO UPPER LEVEL LOW CENTER FROM 18 TO 24 HOURS AGO HAS WORKED ITS WAY TO THE SOUTHWEST AND NOW IS ALONG THE LOWER TEXAS COAST. IT STILL IS SURROUNDED BY MIDDLE TO UPPER LEVEL DRY AIR FOR THE MOST PART. NO DEEP THUNDERSTORM ACTIVITY IS ASSOCIATED WITH IT AT THIS MOMENT. THE UPPER LEVEL RIDGE THAT HAD BEEN STRETCHING FROM THE NORTHWESTERN CARIBBEAN SEA NORTHEASTWARD ACROSS CUBA AND THE BAHAMAS INTO THE WESTERN ATLANTIC OCEAN HAS SHIFTED WESTWARD A BIT AND NOW COVERS THE YUCATAN PENINSULA AND MUCH OF THE SOUTHWESTERN GULF OF MEXICO. THIS RIDGE STILL HAS MUCH OF THE SAME ORIENTATION AS IT HAD WHEN T.S. ALBERTO WAS MOVING THROUGH THE EASTERN GULF...NOW RUNNING FROM THE SOUTHWESTERN GULF OF MEXICO. SHOWERS AND THUNDERSTORMS HAD BEEN OCCURRING FROM JUST EAST OF THE ISTHMUS OF TEHUANTEPEC OF MEXICO EASTWARD TO THE NORTHWESTERN YUCATAN PENINSULA SIX HOURS AGO. THIS PRECIPITATION HAS BEEN WEAKENING ON SATELLITE IMAGERY FOR THE LAST FEW HOURS. BROKEN TO OVERCAST MIDDLE AND HIGH CLOUDS ARE WITHIN 120 NM ON EITHER SIDE OF 26N87W 22N91W 18N94W. THESE CLOUDS ARE PART OF THE BAND OF MIDDLE TO HIGH LEVEL MOISTURE NOW AT THE PERIPHERY OF THE ANTICYCLONIC FLOW AROUND THE RIDGE WHICH HAS SHIFTED WESTWARD FROM THE NORTHWESTERN CARIBBEAN SEA. A WIDER SWATH OF MIDDLE TO UPPER LEVEL CLOUDS IS NORTH OF 24N EAST OF 85W... MOVING FROM THE EASTERN GULF WATERS ACROSS FLORIDA INTO THE WESTERN ATLANTIC OCEAN. THE CLOUDS IN THIS AREA ARE THINNING OUT WITH TIME. BROAD UPPER LEVEL ANTICYCLONIC FLOW WITH THE GULF OF MEXICO-TO-WESTERN ATLANTIC OCEAN RIDGE COVERS THE AREA NORTH OF 25N WEST OF 55W. THE REST OF THE CARIBBEAN SEA AND THE ATLANTIC OCEAN SOUTH OF 25N WEST OF 50W... A MIDDLE TO UPPER LEVEL LOW CENTER IS NEAR 16N79W...ABOUT 120 NM SOUTHWEST OF JAMAICA. THIS LOW CENTER IS PART OF A BROADER AREA OF LOW PRESSURE WHICH HAS BEEN WORKING ITS WAY WESTWARD DURING THE LAST 48 HOURS OR SO. A LOW CENTER HAD BEEN SEEN IN WATER VAPOR IMAGERY A FEW DAYS AGO...AND A TROUGH WAS IN THE CENTRAL CARIBBEAN SEA YESTERDAY STRETCHING FROM SOUTHERN HISPANIOLA SOUTHWESTWARD. MIDDLE TO UPPER LEVEL DRY AIR IS IN THE NORTHWESTERN CORNER OF THE AREA...NORTH OF 16N WEST OF 80W. ISOLATED MODERATE TO STRONG SHOWERS AND THUNDERSTORMS HAVE BEEN DEVELOPING IN THIS AREA AS THE 16N79W LOW CENTER HAS BEEN MOVING WESTWARD. SHOWERS AND THUNDERSTORMS NOW ARE FOUND NORTH OF 16N WEST OF 75W. A MIDDLE TO UPPER LEVEL TROUGH STRETCHES FROM A 23N57W LOW CENTER TO 19N60W TO 18N68W TO THE 16N79W LOW CENTER. MIDDLE TO UPPER LEVEL CLOUDS ARE WITHIN 200 NM TO THE EAST AND SOUTHEAST OF THIS TROUGH. MOSTLY HIGH CLOUDS ARE NEAR THE 23N57W ATLANTIC OCEAN LOW CENTER...FROM 20N TO 26N BETWEEN 45W AND 58W. MIDDLE TO UPPER LEVEL CLOUDS COVER THE CARIBBEAN SEA FROM 15N TO 20N BETWEEN 64W AND 76W. STRONG SHOWERS AND THUNDERSTORMS IN A FEW CELLS ARE FOUND FROM 13N TO 14N BETWEEN 81W AND 83W...POSSIBLY WITH THE ITCZ. ISOLATED MODERATE SHOWERS ARE IN A LINE FROM 11N TO 13N BETWEEN 75W AND 80W BETWEEN COLOMBIA AND THE ISLANDS EAST OF NICARAGUA. THE REST OF THE ATLANTIC OCEAN... A MIDDLE TO UPPER LEVEL LOW CENTER IS NEAR 29N35W. CYCLONIC FLOW AROUND THIS CENTER COVER THE ATLANTIC WATERS FROM 21N TO 35N BETWEEN 28W AND 50W. NO DEEP SHOWERS AND THUNDERSTORMS ARE ASSOCIATED WITH THIS 29N35W LOW CENTER. AN UPPER LEVEL RIDGE EXTENDS FROM THE ATLANTIC WATERS JUST NORTH OF THE CAPE VERDE ISLANDS TO 31N23W. BROAD MIDDLE TO UPPER LEVEL CYCLONIC FLOW COVERS THE ATLANTIC OCEAN NORTH OF 30N EAST OF 20W WITH A LOW CENTER WEST OF PORTUGAL. A SURFACE RIDGE RUNS FROM 38N32W TO A 1030 MB HIGH PRESSURE CENTER NEAR 34N46W TO 30N64W TO 27N72W INTO THE EASTERN GULF OF MEXICO NEAR 26N83W. BROAD SURFACE ANTICYCLONIC FLOW COVERS THE ATLANTIC OCEAN WATERS NORTH OF 17N BETWEEN AFRICA AND THE SOUTHEASTERN U.S.A. COAST. $$ MT