INFORMATIONADV LAT LON DATE/TIME WIND PR STATUS 1 12.2 -22.7 04/09 Z 30 1007 TD #3 formed 2 12.4 -25.0 04/15 Z 35 1005 Tropical Storm Alberto...upgraded 3 12.9 -25.9 04/21 Z 50 999 Tropical Storm 4 13.4 -27.5 05/03 Z 50 999 Tropical Storm 5 13.7 -28.7 05/09 Z 55 994 Tropical Storm 6 14.4 -30.7 05/15 Z 50 1000 Tropical Storm 7 14.7 -32.1 05/21 Z 65 990 Hurricane Alberto...upgraded 8 14.6 -34.1 06/03 Z 65 994 Hurricane 9 14.4 -35.4 06/09 Z 70 988 Hurricane 10 14.9 -36.0 06/15 Z 70 987 Hurricane 11 15.4 -37.2 06/21 Z 75 983 Hurricane 12 16.0 -38.8 07/03 Z 75 983 Hurricane 13 16.2 -40.3 07/09 Z 80 979 Hurricane 14 16.3 -41.7 07/15 Z 80 979 Hurricane 15 16.6 -42.8 07/21 Z 80 979 Hurricane 16 16.7 -44.0 08/03 Z 75 981 Hurricane 17 17.1 -45.6 08/09 Z 70 984 Hurricane 18 17.4 -45.9 08/15 Z 70 984 Hurricane 19 18.8 -47.0 08/21 Z 65 987 Hurricane 20 20.0 -47.6 09/03 Z 60 990 Tropical Storm...weakened 21 20.8 -48.7 09/09 Z 60 990 Tropical Storm 22 22.4 -50.5 09/15 Z 60 990 Tropical Storm 23 24.0 -52.0 09/21 Z 65 987 Hurricane...upgraded 24 25.7 -53.5 10/03 Z 65 987 Hurricane 25 26.9 -54.6 10/09 Z 65 987 Hurricane 26 28.1 -56.1 10/15 Z 65 987 Hurricane 27 29.5 -57.3 10/21 Z 65 987 Hurricane 28 30.6 -58.1 11/03 Z 75 981 Hurricane 29 31.6 -58.7 11/09 Z 75 981 Hurricane 30 32.7 -58.7 11/15 Z 75 981 Hurricane 31 33.8 -58.3 11/21 Z 90 970 Hurricane 32 35.2 -57.2 12/03 Z 95 965 Hurricane 33 35.7 -56.0 12/09 Z 100 960 Major Hurricane Alberto...promoted 34 36.6 -54.4 12/15 Z 110 950 Major Hurricane 35 37.1 -53.0 12/21 Z 110 950 Major Hurricane 36 37.8 -51.0 13/03 Z 100 960 Major Hurricane 37 38.3 -49.3 13/09 Z 90 970 Hurricane...demoted 38 38.7 -47.4 13/15 Z 80 978 Hurricane 39 38.9 -45.8 13/21 Z 75 979 Hurricane 40 39.1 -43.9 14/03 Z 70 982 Hurricane 41 39.0 -41.2 14/09 Z 65 988 Hurricane 42 39.0 -40.0 14/15 Z 60 990 Tropical Storm Alberto...downgraded 43 39.0 -38.7 14/21 Z 50 997 Tropical Storm 44 38.6 -38.5 15/03 Z 45 998 Tropical Storm 45 37.8 -38.4 15/09 Z 45 998 Tropical Storm 46 36.9 -38.6 15/15 Z 45 998 Tropical Storm 47 36.4 -39.2 15/21 Z 40 1000 Tropical Storm 48 35.8 -39.6 16/03 Z 40 1000 Tropical Storm 49 35.2 -40.6 16/09 Z 40 1000 Tropical Storm 50 34.3 -41.9 16/15 Z 40 1000 Tropical Storm 51 33.6 -43.2 16/21 Z 40 1000 Tropical Storm 52 33.2 -44.2 17/03 Z 45 998 Tropical Storm 53 32.9 -44.4 17/09 Z 45 998 Tropical Storm 54 32.9 -45.3 17/15 Z 45 998 Tropical Storm 55 33.1 -46.4 17/21 Z 55 994 Tropical Storm 56 33.4 -46.8 18/03 Z 55 994 Tropical Storm 57 33.7 -47.4 18/09 Z 55 994 Tropical Storm 58 34.5 -47.8 18/15 Z 65 989 Hurricane...upgraded 59 35.1 -48.3 18/21 Z 75 986 Hurricane 60 35.2 -48.3 19/03 Z 70 986 Hurricane 61 35.6 -48.4 19/09 Z 85 974 Hurricane 62 36.0 -48.3 19/15 Z 90 970 Hurricane 63 36.5 -48.1 19/21 Z 95 966 Hurricane 64 36.7 -48.1 20/03 Z 95 970 Hurricane 65 37.0 -48.0 20/09 Z 95 970 Hurricane 66 37.5 -47.9 20/15 Z 85 976 Hurricane 67 37.9 -47.7 20/21 Z 85 970 Hurricane 68 38.1 -47.4 21/03 Z 85 975 Hurricane 69 38.8 -47.3 21/09 Z 85 979 Hurricane 70 39.3 -47.1 21/15 Z 75 975 Hurricane 71 40.6 -46.4 21/21 Z 75 975 Hurricane 72 41.8 -45.7 22/03 Z 75 981 Hurricane 73 43.3 -44.9 22/09 Z 65 983 Hurricane 74 45.0 -43.4 22/15 Z 65 985 Hurricane 75 47.2 -41.4 22/21 Z 65 983 Hurricane 76 49.7 -37.8 23/03 Z 60 986 Tropical Storm Alberto...downgraded 77 52.3 -34.7 23/09 Z 50 986 Tropical Storm 78 54.6 -34.1 23/15 Z 45 994 Extratropical transition has commenced...last WIND is in knots PR is pressure in millibars (mb) or hectopascals (hPa) SUMMARY
ALBERTO, THE FIRST TROPICAL STORM OF THE 2000 SEASON FORMED SOUTH OF
THE CAPEVERDE ISLANDS ON AUG 4TH. ON THE 5TH ALBERTO BECAME A HURRICANE
IN THE FAR EASTERN ATLANTIC. ALBERTO REACHED ITS MAXIMUM STRENGTH ON
AUGUST 12, WITH WINDS OF 110 MPH AND LOCATED ABOUT 585 MILES SOUTH SOUTHEAST
OF SABLE ISLAND CANADA. ALBERTO NEVER REACHED LAND. ON AUGUST 18 ALBERTO
STRENGTHENED TO HURRICANE INTENSITY FOR THE THIRD TIME AND BEGAN HEADING
NORTH-NORTHWEST TOWARDS THE FAR NORTH ATLANTIC TO LATER WEAKEN ONCE AGAIN AND,
ON AUGUST 24TH, ALBERTO BECOMES AN EXTRATROPICAL STORM AS IT HEADS ICELAND.
*********************************************** DETAILS ********************************
ON AUGUST 4, THE STRONG TROPICAL DISTURBANCE LOCATED IN THE FAR EASTERNATLANTIC...HAS
DEVELOPED INTO TROPICAL DEPRESSION THREE 190 MILES SOUTH-SOUTHEAST OF THE CAPE VERDE
ISLANDS. FORECAST ADVISORIES CAN BE FOUND UNDER WMO HEADER WTNT23 KNHC AND UNDER AFOS/AWIPS
HEADERMIATCMAT3.
PUBLIC ADVISORIES CAN BE FOUND UNDER WMO HEADER WTNT33KNHC AND UNDER AFOS/AWIPS HEADER
MIATCPAT3
***********************************************08-05-2000**********************************
no data available...
***********************************************08-06-2000**********************************
no data available...
***********************************************08-07-2000**********************************
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE ALBERTO.
category 1 Hurricane Alberto at Maximum Sustained Winds: 90 mph on 8-07-00, 9:41am EST -
minimum central pressure 979MB; located about 1410 miles east of the Leeward Islands,
moving West-Northwest at 15 mph.
***********************************************08-08-2000**********************************
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE ALBERTO.
category 1 Hurricane Alberto at Maximum Sustained Winds: 80 mph on 8-08-00, 7:11am EST -
minimum central pressure 984MB; located about 1125 miles east of the Leeward Islands,
moving West-Northwest at 15 mph.
**********************************************08-09-2000***********************************
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON TROPICAL STORM ALBERTO.
Troical Storm Alberto at Maximum Sustained Winds: 70 mph on 8-09-00 7:11am, EST - minimum
central pressure 990MB; located 1265 miles Southeast of Bermuda, moving Northwest at 14 mph.
**********************************************08-10-2000***********************************
no data available...
**********************************************08-11-2000***********************************
category 1 Hurricane Alberto at Maximum Sustained Winds: 85 mph on 8-11-00, 7:40am EST -
minimum central pressure 981MB; located 360 miles East of Bermuda, moving Northwest at 18
mph.
**********************************************08-12-2000***********************************
no data available...
**********************************************08-13-2000***********************************
no data available...
**********************************************08-14-2000************************************
category 1 Hurricane Alberto at Maximum Sustained Winds: 75 mph on 8-14-00, 7:40am EST -
minimum central pressure 988MB; located about 670 miles West of the Westernmost Azores,
moving East at 23 mph.
**********************************************08-15-2000************************************
Tropical Storm Alberto at Maximum Sustained Winds: 50 mph on 8-15-00 7:40am
EST - minimum central pressure 998MB; located about 530 miles West of the
Westernmost Azores, moving towards the South near 8 mph.
*********************************************08-16-2000*************************************
Tropical Storm Alberto at Maximum Sustained Winds: 45 mph on 8-16-00 7:40am EST - minimum
central pressure 1000MB; located about 720 miles West-Southwest of the Westernmost Azores
Islands, moving towards the Southwest near 9 mph.
********************************************08-17-2000**************************************
060 WTNT33 KNHC 170837 TCPAT3 BULLETIN
TROPICAL STORM ALBERTO ADVISORY NUMBER 53 NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST THU AUG 17 2000
...ALBERTO TURNING WESTWARD WITH LITTLE CHANGE IN STRENGTH...
AT 5 AM AST...0900Z...THE CENTER OF TROPICAL STORM ALBERTO WAS
LOCATED NEAR LATITUDE 32.9 NORTH...LONGITUDE 44.4 WEST OR ABOUT 980
MILES...1580 KM...WEST-SOUTHWEST OF THE WESTERNMOST AZORES ISLANDS.
ALBERTO IS MOVING TOWARD THE WEST NEAR 7 MPH...11 KM/HR...AND THIS
MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 24 HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH... 85 KM/HR...WITH HIGHER
GUSTS. SOME STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM
FROM THE CENTER.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 998 MB...29.47 INCHES. A
DRIFTING BUOY NEAR THE CENTER RECENTLY REPORTED A PRESSURE OF 1001.9
MB...29.59 IN. REPEATING THE 5 AM AST POSITION...32.9 N... 44.4 W. MOVEMENT
TOWARD...WEST NEAR 7 MPH. MAXIMUM SUSTAINED WINDS... 50 MPH.
MINIMUM CENTRAL PRESSURE... 998 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 11 AM AST.
FORECASTER BEVEN
******************************************08-18-2000****************************************
303
WTNT33 KNHC 180843
TCPAT3
BULLETIN
TROPICAL STORM ALBERTO ADVISORY NUMBER 57
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST FRI AUG 18 2000
...CORRECTION TO SPELLING OF ALBERTO IN THE HEADLINE...
...ALBERTO MOVING NORTHWEST IN ITS NORTH ATLANTIC LOOP....
AT 5 AM AST...0900Z...THE CENTER OF TROPICAL STORM ALBERTO WAS
LOCATED NEAR LATITUDE 33.7 NORTH...LONGITUDE 47.4 WEST OR ABOUT
1110 MILES...1790 KM...WEST-SOUTHWEST OF THE WESTERNMOST AZORES
ISLANDS.
ALBERTO IS MOVING TOWARD THE NORTHWEST NEAR 7 MPH...11 KM/HR...AND
A SLOW TURN TO THE NORTH IS EXPECTED DURING THE NEXT 24 HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 65 MPH...100 KM/HR...WITH HIGHER
GUSTS. SOME STRENGTHENING IS FORECAST DURING THE NEXT 24 HOURS...
AND ALBERTO COULD REGAIN HURRICANE STATUS LATER TODAY OR TONIGHT.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 145 MILES
...230 KM FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 994 MB...29.35 INCHES.
REPEATING THE 5 AM AST POSITION...33.7 N... 47.4 W. MOVEMENT
TOWARD...NORTHWEST NEAR 7 MPH. MAXIMUM SUSTAINED WINDS... 65 MPH.
MINIMUM CENTRAL PRESSURE... 994 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
11 AM AST.
FORECASTER BEVEN
**********************************************08-19-2000************************************
no data available...
**********************************************08-20-2000************************************
no data available....
**********************************************08-21-2000************************************
243 WTNT33 KNHC 210838
TCPAT3
BULLETIN
HURRICANE ALBERTO ADVISORY NUMBER 69
NATIONAL WEATHER SERVICE MIAMI FL
5 AM AST MON AUG 21 2000
...ALBERTO WEAKENS...
AT 5 AM AST...0900Z...THE CENTER OF HURRICANE ALBERTO
WAS LOCATED NEAR LATITUDE 38.8 NORTH...LONGITUDE 47.3 WEST
OR ABOUT 995 MILES...1605 KM...WEST OF THE WESTERNMOST AZORES.
ALBERTO IS MOVING TOWARD THE NORTH NORTHEAST NEAR 6 MPH
... 9 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE WITH AN
INCREASE IN FORWARD SPEED LATER TODAY OR TONIGHT.
MAXIMUM SUSTAINED WINDS ARE NEAR 85 MPH...140 KM/HR...WITH HIGHER
GUSTS. SOME WEAKENING IS FORECAST DURING THE NEXT 24 HOURS.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 50 MILES... 85 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 140 MILES...220 KM.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 979 MB...28.91 INCHES.
REPEATING THE 5 AM AST POSITION...38.8 N... 47.3 W. MOVEMENT
TOWARD...NORTH NORTHEAST NEAR 6 MPH. MAXIMUM SUSTAINED
WINDS... 85 MPH. MINIMUM CENTRAL PRESSURE... 979 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER
AT 11 AM AST.
FORECASTER FRANKLIN
**********************************************08-22-2000************************************
476
WTNT33 KNHC 221429
TCPAT3
BULLETIN
HURRICANE ALBERTO ADVISORY NUMBER 74
NATIONAL WEATHER SERVICE MIAMI FL
11 AM AST TUE AUG 22 2000
...ALBERTO HEADING INTO FAR NORTH ATLANTIC OCEAN...
AT 11 AM AST...1500Z...THE CENTER OF HURRICANE ALBERTO WAS LOCATED
NEAR LATITUDE 45.0 NORTH...LONGITUDE 43.4 WEST OR ABOUT 475
MILES...765 KM...EAST OF CAPE RACE NEWFOUNDLAND.
ALBERTO IS MOVING TOWARD THE NORTH NORTHEAST NEAR 20 MPH...32
KM/HR...AND A LARGE INCREASE IN FORWARD SPEED IS EXPECTED DURING THE
NEXT 24 HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 75 MPH...120 KM/HR...WITH HIGHER
GUSTS. SOME WEAKENING IS EXPECTED AS THE HURRICANE MOVES OVER THE
COLD WATERS OF THE NORTH ATLANTIC OCEAN AND ALBERTO IS FORECAST TO
BECOM EXTRATROPICAL BY WEDNESDAY.
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 45 MILES... 75 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 145 MILES...230 KM.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 985 MB...29.09 INCHES.
REPEATING THE 11 AM AST POSITION...45.0 N... 43.4 W. MOVEMENT
TOWARD...NORTH NORTHEAST NEAR 20 MPH. MAXIMUM SUSTAINED
WINDS... 75 MPH. MINIMUM CENTRAL PRESSURE... 985 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL
HURRICANE CENTER AT 5 PM AST.
FORECASTER LAWRENCE
WTNT3 Archive
868
WTNT43 KNHC 221413
TCDAT3
HURRICANE ALBERTO DISCUSSION NUMBER 74
NATIONAL WEATHER SERVICE MIAMI FL
11 AM EDT TUE AUG 22 2000
THE INITIAL MOTION IS 030/17. THE 06Z AVIATION MODEL SHOWS THE
HURRICANE ACCELERATING TOWARD THE NORTH-NORTHEAST AND MERGING WITH A
LOW AND TROUGH WHICH IS CURRENTLY LOCATED OVER GREENLAND AND
EXTENDING SOUTHWESTWARD TO THE CANADIAN MARITIMES. ALBERTO WILL BE
OVER SSTS BELOW 20 DEG C IN 12 HOURS...AND SHOULD BE EXTRATROPICAL
IN 24 HOURS.
THE OFFICIAL TRACK FORECAST FOLLOWS THE AVIATION MODEL AND IS
SHIFTED A LITTLE RIGHT OF THE PREVIOUS ADVISORY AND ACCELERATES THE
FORWARD SPEED TO ABOUT 35 KNOTS IN 24 HOURS.
SATELLITE INTENSITY ESTIMATES RANGE FROM 65 TO 75 KNOTS. THE
INITIAL OFFICIAL INTENSITY IS PUT AT 65 KNOTS BASED ON THE COLD
WATER MAKING THE LOWER LAYER MORE STABLE. WEAKENING TO 50 KNOTS IS
FORECAST AT 24 HOURS FOLLOWING THE SHIPS MODEL.
FORECASTER LAWRENCE
FORECAST POSITIONS AND MAX WINDS
INITIAL 22/1500Z 45.0N 43.4W 65 KTS
12HR VT 23/0000Z 47.7N 41.8W 55 KTS
24HR VT 23/1200Z 53.0N 38.0W 50 KTS...EXTRATROPICAL
36HR VT 24/0000Z 60.5N 36.5W 50 KTS...EXTRATROPICAL
NHC Model Suite Guidance and GFDL Model Guidance (from NOAA ARL)
(These products should not be used in place of the Official NHC forecast above.)
WTNT4 Archive
858
WTNT23 KNHC 221417
TCMAT3
HURRICANE ALBERTO FORECAST/ADVISORY NUMBER 74
NATIONAL WEATHER SERVICE MIAMI FL AL0300
1500Z TUE AUG 22 2000
HURRICANE CENTER LOCATED NEAR 45.0N 43.4W AT 22/1500Z
POSITION ACCURATE WITHIN 20 NM
PRESENT MOVEMENT TOWARD THE NORTH NORTHEAST OR 30 DEGREES AT 17 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 985 MB
EYE DIAMETER 50 NM
MAX SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT.
64 KT....... 40NE 40SE 25SW 25NW.
50 KT....... 65NE 65SE 50SW 50NW.
34 KT.......125NE 125SE 100SW 100NW.
12 FT SEAS..300NE 300SE 250SW 250NW.
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 45.0N 43.4W AT 22/1500Z
AT 22/1200Z CENTER WAS LOCATED NEAR 44.1N 44.0W
FORECAST VALID 23/0000Z 47.7N 41.8W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 75NE 75SE 50SW 50NW.
34 KT...200NE 200SE 100SW 100NW.
FORECAST VALID 23/1200Z 53.0N 38.0W...EXTRATROPICAL
MAX WIND 50 KT...GUSTS 50 KT.
50 KT...100NE 100SE 50SW 50NW.
34 KT...250NE 250SE 100SW 60NW.
FORECAST VALID 24/0000Z 60.5N 36.5W...EXTRATROPICAL
MAX WIND 50 KT...GUSTS 60 KT.
50 KT...100NE 100SE 50SW 30NW.
34 KT...250NE 250SE 100SW 60NW.
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 45.0N 43.4W
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE
FORECAST VALID 24/1200Z...MERGED WITH EXTRATROPICAL LOW
NEXT ADVISORY AT 22/2100Z
FORECASTER LAWRENCE
WTNT2 Archive
569
WTNT73 KNHC 221430
SPFAT3
HURRICANE ALBERTO PROBABILITIES NUMBER 74
NATIONAL WEATHER SERVICE MIAMI FL
11 AM AST TUE AUG 22 2000
PROBABILITIES FOR GUIDANCE IN HURRICANE PROTECTION
PLANNING BY GOVERNMENT AND DISASTER OFFICIALS
AT 11 AM AST...1500Z...THE CENTER OF ALBERTO WAS LOCATED NEAR
LATITUDE 45.0 NORTH...LONGITUDE 43.4 WEST
CHANCES OF CENTER OF THE HURRICANE PASSING WITHIN 65 NAUTICAL MILES
OF LISTED LOCATIONS THROUGH 8AM AST FRI AUG 25 2000
LOCATION A B C D E LOCATION A B C D E
53.0N 38.0W 21 7 X X 28 60.5N 36.5W X 16 X X 16
COLUMN DEFINITION PROBABILITIES IN PERCENT
A IS PROBABILITY FROM NOW TO 8AM WED
FOLLOWING ARE ADDITIONAL PROBABILITIES
B FROM 8AM WED TO 8PM WED
C FROM 8PM WED TO 8AM THU
D FROM 8AM THU TO 8AM FRI
E IS TOTAL PROBABILITY FROM NOW TO 8AM FRI
X MEANS LESS THAN ONE PERCENT
FORECASTER LAWRENCE
****************************************08-23-2000******************************************
no data available...
****************************************08-24-2000******************************************
938
WTNT33 KNHC 231424
TCPAT3
BULLETIN
TROPICAL STORM ALBERTO ADVISORY NUMBER 78
NATIONAL WEATHER SERVICE MIAMI FL
11 AM AST WED AUG 23 2000
...ALBERTO...BECOMES EXTRATROPICAL AS IT HEADS FOR ICELAND...
AT 11 AM AST...1500Z...THE CENTER OF THE EXTRATROPICAL STORM THAT
WAS ALBERTO WAS LOCATED NEAR LATITUDE 54.6 NORTH...LONGITUDE 34.1
WEST OR ABOUT 780 MILES...1255 KM...SOUTH-SOUTHWEST OF REYKJAVIK
ICELAND.
THE STORM IS MOVING TOWARD THE NORTHEAST NEAR 37 MPH...59 KM/HR...
AND THIS MOTION IS EXPECTED TO CONTINUE FOR THE NEXT 12 HOURS.
MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH... 85 KM/HR...WITH HIGHER
GUSTS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 200 MILES
...325 KM FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 994 MB...29.35 INCHES.
REPEATING THE 11 AM AST POSITION...54.6 N... 34.1 W. MOVEMENT
TOWARD...NORTHEAST NEAR 37 MPH. MAXIMUM SUSTAINED
WINDS... 50 MPH. MINIMUM CENTRAL PRESSURE... 994 MB.
THIS WILL BE THE LAST ADVISORY ISSUED BY THE NATIONAL HURRICANE
CENTER ON ALBERTO. FORECASTS ON THIS EXTRATROPICAL STORM WILL BE
CARRIED IN THE HIGH SEAS FORECAST ISSUED BY THE MARINE PREDICTION
CENTER UNDER HEADER HSFAT1.
FORECASTER JARVINEN
WTNT3 Archive
342
WTNT43 KNHC 231420
TCDAT3
TROPICAL STORM ALBERTO DISCUSSION NUMBER 78
NATIONAL WEATHER SERVICE MIAMI FL
11 AM EDT WED AUG 23 2000
MORNING VISIBLE IMAGERY SHOWS THAT ALBERTO HAS BECOME AN
EXTRATROPICAL CYCLONE. THEREFORE...THIS WILL BE THE LAST ADVISORY
ON ALBERTO...ONE OF THE TOP THREE LONGEST LIVED TROPICAL CYCLONES IN
THE ATLANTIC BASIN.
THE INITIAL MOTION OF THE EXTRATROPICAL CYCLONE IS 030/32 AND THE
INITIAL INTENSITY IS 45 KTS.
THE SYSTEM WILL BE CARRIED AS A LOW IN THE HIGH SEAS FORECAST UNDER
THE HEADER HSFAT1 ISSUED BY THE MARINE PREDICTION CENTER.
FORECASTER JARVINEN
FORECAST POSITIONS AND MAX WINDS
INITIAL 23/1500Z 54.6N 34.1W 45 KTS...EXTRATROPICAL
12HR VT 24/0000Z 58.3N 28.6W 45 KTS...EXTRATROPICAL
NHC Model Suite Guidance and GFDL Model Guidance (from NOAA ARL)
(These products should not be used in place of the Official NHC forecast above.)
WTNT4 Archive
712
WTNT23 KNHC 231422
TCMAT3
TROPICAL STORM ALBERTO FORECAST/ADVISORY NUMBER 78
NATIONAL WEATHER SERVICE MIAMI FL AL0300
1500Z WED AUG 23 2000
...ALBERTO BECOMES EXTRATROPICAL...
EXTRATROPICAL STORM CENTER LOCATED NEAR 54.6N 34.1W AT 23/1500Z
POSITION ACCURATE WITHIN 60 NM
PRESENT MOVEMENT TOWARD THE NORTHEAST OR 35 DEGREES AT 32 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 994 MB
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.
34 KT.......175NE 175SE 150SW 60NW.
12 FT SEAS..300NE 300SE 250SW 250NW.
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 54.6N 34.1W AT 23/1500Z
AT 23/1200Z CENTER WAS LOCATED NEAR 53.4N 35.4W
FORECAST VALID 24/0000Z 58.3N 28.6W...EXTRATROPICAL
MAX WIND 45 KT...GUSTS 55 KT.
34 KT...175NE 175SE 150SW 60NW.
THIS WILL BE THE LAST ADVISORY ON ALBERTO. FUTURE ADVISORIES ON
THIS SYSTEM WILL BE ISSUED BY MPC UNDER HEADER HSFAT1.
FORECASTER JARVINEN
WTNT2 Archive
965
WTNT73 KNHC 231423
SPFAT3
TROPICAL STORM ALBERTO PROBABILITIES NUMBER 78
NATIONAL WEATHER SERVICE MIAMI FL
11 AM AST WED AUG 23 2000
PROBABILITIES FOR GUIDANCE IN HURRICANE PROTECTION
PLANNING BY GOVERNMENT AND DISASTER OFFICIALS
AT 11 AM AST...1500Z...THE CENTER OF ALBERTO WAS LOCATED NEAR
LATITUDE 54.6 NORTH...LONGITUDE 34.1 WEST
CHANCES OF CENTER OF THE STORM PASSING WITHIN 65 NAUTICAL MILES
OF LISTED LOCATIONS THROUGH 8AM AST SAT AUG 26 2000
LOCATION A B C D E LOCATION A B C D E
COLUMN DEFINITION PROBABILITIES IN PERCENT
A IS PROBABILITY FROM NOW TO 8AM THU
FOLLOWING ARE ADDITIONAL PROBABILITIES
B FROM 8AM THU TO 8PM THU
C FROM 8PM THU TO 8AM FRI
D FROM 8AM FRI TO 8AM SAT
E IS TOTAL PROBABILITY FROM NOW TO 8AM SAT
X MEANS LESS THAN ONE PERCENT
FORECASTER JARVINEN
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