453  
FONT12 KNHC 212053  
PWSAT2  
 
TROPICAL STORM BERTHA WIND SPEED PROBABILITIES NUMBER 10  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL022026  
2100 UTC TUE JUL 21 2026  
 
AT 2100Z THE CENTER OF TROPICAL STORM BERTHA WAS LOCATED NEAR  
LATITUDE 29.4 NORTH...LONGITUDE 87.2 WEST WITH MAXIMUM SUSTAINED  
WINDS NEAR 50 KTS...60 MPH...95 KM/H.  
 
Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH)  
ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME  
EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME  
CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME  
 
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 OP(CP) WHERE  
OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING  
AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY)  
(CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN  
18Z TUE 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 34...50...64 KT SHOWN WHEN THE 5-DAY  
64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT.  
 
 
- - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - -  
 
FROM FROM FROM FROM FROM FROM FROM  
TIME 18Z TUE 06Z WED 18Z WED 06Z THU 18Z THU 18Z FRI 18Z SAT  
PERIODS TO TO TO TO TO TO TO  
06Z WED 18Z WED 06Z THU 18Z THU 18Z FRI 18Z SAT 18Z SUN  
 
FORECAST HOUR (12) (24) (36) (48) (72) (96) (120)  
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -  
LOCATION KT  
 
DESTIN EXEC AP 34 3 X( 3) X( 3) X( 3) X( 3) X( 3) X( 3)  
 
PENSACOLA FL 34 6 1( 7) X( 7) X( 7) X( 7) X( 7) X( 7)  
 
GFAM 290N 870W 34 99 X(99) X(99) X(99) X(99) X(99) X(99)  
GFAM 290N 870W 50 12 1(13) X(13) X(13) X(13) X(13) X(13)  
 
MOBILE AL 34 1 3( 4) X( 4) X( 4) X( 4) X( 4) X( 4)  
 
GULFPORT MS 34 X 8( 8) 1( 9) X( 9) X( 9) X( 9) X( 9)  
 
STENNIS MS 34 X 5( 5) 3( 8) X( 8) X( 8) X( 8) X( 8)  
 
BURAS LA 34 X 27(27) 13(40) X(40) X(40) X(40) X(40)  
 
GFAM 280N 890W 34 X 11(11) 2(13) X(13) X(13) X(13) X(13)  
 
NEW ORLEANS LA 34 X 3( 3) 8(11) X(11) X(11) X(11) X(11)  
 
HOUMA LA 34 X 2( 2) 16(18) X(18) X(18) X(18) X(18)  
 
GFAM 280N 910W 34 X 1( 1) 13(14) 2(16) X(16) X(16) X(16)  
 
MORGAN CITY LA 34 X X( X) 12(12) 2(14) X(14) X(14) X(14)  
 
LAFAYETTE LA 34 X X( X) 2( 2) 3( 5) X( 5) X( 5) X( 5)  
 
NEW IBERIA LA 34 X X( X) 5( 5) 3( 8) X( 8) X( 8) X( 8)  
 
GFAM 280N 930W 34 X X( X) 3( 3) 9(12) 1(13) X(13) X(13)  
 
LAKE CHARLES 34 X X( X) X( X) 3( 3) 2( 5) X( 5) X( 5)  
 
CAMERON LA 34 X X( X) 2( 2) 18(20) 4(24) X(24) X(24)  
 
KOUNTZE TX 34 X X( X) X( X) 1( 1) 3( 4) X( 4) X( 4)  
 
PORT ARTHUR TX 34 X X( X) X( X) 2( 2) 4( 6) X( 6) X( 6)  
 
GALVESTON TX 34 X X( X) X( X) 8( 8) 14(22) X(22) X(22)  
GALVESTON TX 50 X X( X) X( X) 1( 1) 2( 3) X( 3) X( 3)  
 
HOUSTON TX 34 X X( X) X( X) X( X) 6( 6) X( 6) X( 6)  
 
AUSTIN TX 34 X X( X) X( X) X( X) 4( 4) X( 4) X( 4)  
 
FREEPORT TX 34 X X( X) X( X) 1( 1) 4( 5) X( 5) X( 5)  
 
GFAM 280N 950W 34 X X( X) X( X) 3( 3) 4( 7) X( 7) X( 7)  
 
HIGH ISLAND TX 34 X X( X) X( X) 3( 3) 5( 8) X( 8) X( 8)  
 
MATAGORDA TX 34 X X( X) X( X) 1( 1) 9(10) X(10) X(10)  
 
PORT O CONNOR 34 X X( X) X( X) X( X) 7( 7) X( 7) X( 7)  
 

 
FORECASTER REINHART  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab TPC Page Main Text Page