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Tropical Storm ALVIN Public Advisory Number 7

2013-05-17 04:36:54| National Hurricane Center (East Pacific)

Issued at 800 PM PDT THU MAY 16 2013 000 WTPZ31 KNHC 170236 TCPEP1 BULLETIN TROPICAL STORM ALVIN ADVISORY NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL EP012013 800 PM PDT THU MAY 16 2013 ...ALVIN IN A HOSTILE ENVIRONMENT... ...FURTHER WEAKENING EXPECTED... SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...9.8N 110.8W ABOUT 770 MI...1240 KM SW OF MANZANILLO MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 PM PDT...0300 UTC...THE CENTER OF TROPICAL STORM ALVIN WAS LOCATED NEAR LATITUDE 9.8 NORTH...LONGITUDE 110.8 WEST. ALVIN IS MOVING TOWARD THE WEST-NORTHWEST NEAR 14 MPH...22 KM/H...AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH SATURDAY. MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 40 MPH...65 KM/H... WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 48 HOURS...BUT ALVIN COULD DEGENERATE INTO A TROUGH OF LOW PRESSURE AT ANY TIME. TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 45 MILES...75 KM FROM THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1006 MB...29.71 INCHES. HAZARDS AFFECTING LAND ---------------------- NONE NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...200 AM PDT. $$ FORECASTER KIMBERLAIN

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Tropical Storm ALVIN Advisory GIS Forecast Track, Cone, Watches/Warnings (.shp)

2013-05-17 04:36:47| National Hurricane Center (East Pacific)

GIS Data last updated Fri, 17 May 2013 02:36:47 GMT

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Tropical Storm ALVIN Forecast Advisory Number 7

2013-05-17 04:36:04| National Hurricane Center (East Pacific)

Issued at 0300 UTC FRI MAY 17 2013 000 WTPZ21 KNHC 170235 TCMEP1 TROPICAL STORM ALVIN FORECAST/ADVISORY NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL EP012013 0300 UTC FRI MAY 17 2013 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 9.8N 110.8W AT 17/0300Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 40NE 40SE 0SW 40NW. 12 FT SEAS.. 75NE 30SE 0SW 75NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 9.8N 110.8W AT 17/0300Z AT 17/0000Z CENTER WAS LOCATED NEAR 9.6N 110.1W FORECAST VALID 17/1200Z 10.2N 111.8W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 40NW. FORECAST VALID 18/0000Z 11.0N 113.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 40SE 0SW 40NW. FORECAST VALID 18/1200Z 11.7N 114.5W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 19/0000Z 12.1N 115.9W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 20/0000Z 12.5N 119.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 21/0000Z 12.3N 121.3W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 22/0000Z 12.0N 123.5W...POST-TROP/REMNT LOW MAX WIND 15 KT...GUSTS 20 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 9.8N 110.8W NEXT ADVISORY AT 17/0900Z $$ FORECASTER KIMBERLAIN

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Tropical Storm ALVIN Graphics

2013-05-16 23:05:37| National Hurricane Center (East Pacific)

5-Day Uncertainty Track last updated Thu, 16 May 2013 20:41:16 GMT Wind Speed Probabilities last updated Thu, 16 May 2013 21:03:28 GMT

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Tropical Storm ALVIN Wind Speed Probabilities Number 6

2013-05-16 22:41:34| National Hurricane Center (East Pacific)

Issued at 2100 UTC THU MAY 16 2013 000 FOPZ11 KNHC 162040 PWSEP1 TROPICAL STORM ALVIN WIND SPEED PROBABILITIES NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL EP012013 2100 UTC THU MAY 16 2013 AT 2100Z THE CENTER OF TROPICAL STORM ALVIN WAS LOCATED NEAR LATITUDE 9.5 NORTH...LONGITUDE 109.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 40 KTS...45 MPH...75 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME I. MAXIMUM WIND SPEED (INTENSITY) PROBABILITY TABLE CHANCES THAT THE MAXIMUM SUSTAINED (1-MINUTE AVERAGE) WIND SPEED OF THE TROPICAL CYCLONE WILL BE WITHIN ANY OF THE FOLLOWING CATEGORIES AT EACH OFFICIAL FORECAST TIME DURING THE NEXT 5 DAYS. PROBABILITIES ARE GIVEN IN PERCENT. X INDICATES PROBABILITIES LESS THAN 1 PERCENT. - - - MAXIMUM WIND SPEED (INTENSITY) PROBABILITIES - - - VALID TIME 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON 18Z TUE FORECAST HOUR 12 24 36 48 72 96 120 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - DISSIPATED X 5 9 10 19 29 39 TROP DEPRESSION 11 36 33 34 41 46 45 TROPICAL STORM 88 56 53 49 38 24 16 HURRICANE 1 3 5 7 2 1 X - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - HUR CAT 1 1 3 5 6 2 1 X HUR CAT 2 X X 1 1 X X X HUR CAT 3 X X X X X X X HUR CAT 4 X X X X X X X HUR CAT 5 X X X X X X X - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FCST MAX WIND 40KT 35KT 35KT 35KT 30KT 25KT 20KT II. WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS IP(CP) WHERE IP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (INDIVIDUAL PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 18Z THU AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 64 KT ARE SHOWN WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 18Z THU 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON PERIODS TO TO TO TO TO TO TO 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON 18Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT CLIPPERTON IS 34 21 1(22) X(22) X(22) X(22) X(22) X(22) $$ FORECASTER BERG

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