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NHC

Tropical Storm Bertha Forecast Advisory

Advisory Number: 10
2100 UTC TUE JUL 21 2026

000
WTNT22 KNHC 212052
TCMAT2

TROPICAL STORM BERTHA FORECAST/ADVISORY NUMBER 10
NWS NATIONAL HURRICANE CENTER MIAMI FL AL022026
2100 UTC TUE JUL 21 2026

TROPICAL STORM CENTER LOCATED NEAR 29.4N 87.2W AT 21/2100Z
POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 5 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB
MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT.
50 KT....... 0NE 40SE 0SW 0NW.
34 KT....... 70NE 100SE 40SW 40NW.
4 M SEAS.... 45NE 120SE 60SW 0NW.
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 29.4N 87.2W AT 21/2100Z
AT 21/1800Z CENTER WAS LOCATED NEAR 29.3N 86.8W

FORECAST VALID 22/0600Z 29.6N 87.9W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 60NE 90SE 50SW 40NW.

FORECAST VALID 22/1800Z 29.5N 89.3W
MAX WIND 45 KT...GUSTS 55 KT.
34 KT... 50NE 90SE 60SW 30NW.

FORECAST VALID 23/0600Z 29.3N 91.4W...NEAR THE COAST
MAX WIND 40 KT...GUSTS 50 KT.
34 KT... 30NE 60SE 60SW 20NW.

FORECAST VALID 23/1800Z 29.4N 93.4W...OVER WATER
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 0NE 60SE 40SW 0NW.

FORECAST VALID 24/0600Z 29.8N 95.6W...INLAND
MAX WIND 30 KT...GUSTS 40 KT.

FORECAST VALID 24/1800Z 30.3N 97.6W...POST-TROP/INLAND
MAX WIND 25 KT...GUSTS 35 KT.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY

OUTLOOK VALID 25/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.4N 87.2W

INTERMEDIATE PUBLIC ADVISORY...WTNT32 KNHC/MIATCPAT2...AT 22/0000Z

NEXT ADVISORY AT 22/0300Z

$$
FORECASTER REINHART

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