101
WTNT33 KNHC 290552
TCPAT3
BULLETIN
HURRICANE HUMBERTO INTERMEDIATE ADVISORY NUMBER 18A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL082025
200 AM AST MON SEP 29 2025
...CATEGORY 4 HUMBERTO WILL PRODUCE DANGEROUS SURF FOR BERMUDA
AND MOST OF THE U.S. EAST COAST THIS WEEK...
SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...26.7N 66.6W
ABOUT 400 MI...645 KM SSW OF BERMUDA
MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H
PRESENT MOVEMENT...NW OR 315 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...928 MB...27.41 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
NONE.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* BERMUDA
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA, GENERALLY WITHIN 48 HOURS.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA, PLEASE MONITOR
PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.
DISCUSSION AND OUTLOOK
----------------------
AT 200 AM AST (0600 UTC), THE CENTER OF HURRICANE HUMBERTO WAS
LOCATED NEAR LATITUDE 26.7 NORTH, LONGITUDE 66.6 WEST. HUMBERTO IS
MOVING TOWARD THE NORTHWEST NEAR 14 MPH (22 KM/H). A GRADUAL TURN
TOWARDS THE NORTH IS EXPECTED OVER THE NEXT DAY OR SO. THE
HURRICANE IS THEN FORECAST TO TURN AND ACCELERATE
EAST-NORTHEASTWARD BY LATE TUESDAY OR EARLY WEDNESDAY. ON THE
FORECAST TRACK, THE CENTER OF HUMBERTO WILL PASS WELL WEST, AND
THEN NORTH OF BERMUDA ON TUESDAY AND WEDNESDAY.
MAXIMUM SUSTAINED WINDS ARE NEAR 140 MPH (220 KM/H) WITH HIGHER
GUSTS. HUMBERTO IS A CATEGORY 4 HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. FLUCTUATIONS IN INTENSITY ARE POSSIBLE DURING
THE NEXT DAY OR SO. GRADUAL WEAKENING IS FORECAST AFTER THAT, BUT
HUMBERTO IS EXPECTED TO REMAIN A DANGEROUS MAJOR HURRICANE FOR
ANOTHER COUPLE OF DAYS.
HURRICANE-FORCE WINDS EXTEND OUTWARD UP TO 60 MILES (95 KM) FROM
THE CENTER AND TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 185
MILES (295 KM).
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 928 MB (27.41 INCHES).
HAZARDS AFFECTING LAND
----------------------
KEY MESSAGES FOR HURRICANE HUMBERTO CAN BE FOUND IN THE TROPICAL
CYCLONE DISCUSSION UNDER AWIPS HEADER MIATCDAT3 AND WMO HEADER
WTNT43 KNHC.
SURF: SWELLS GENERATED BY HUMBERTO WILL CONTINUE TO AFFECT PORTIONS
OF THE NORTHERN LEEWARD ISLANDS, THE VIRGIN ISLANDS, PUERTO RICO,
AND BERMUDA THROUGH MUCH OF THIS WEEK. SWELLS FROM HUMBERTO WILL
ALSO AFFECT THE U.S. EAST COAST BEGINNING TODAY. THESE SWELLS ARE
LIKELY TO CAUSE LIFE-THREATENING SURF AND RIP CURRENT CONDITIONS.
PLEASE CONSULT PRODUCTS FROM YOUR LOCAL WEATHER OFFICE.
A DEPICTION OF RIP CURRENT RISK FOR THE UNITED STATES CAN BE FOUND
AT: HURRICANES.GOV/GRAPHICS_AT4.SHTML?RIPCURRENTS
WIND: TROPICAL STORM CONDITIONS ARE POSSIBLE ON BERMUDA BEGINNING
EARLY TUESDAY MORNING.
RAINFALL: HURRICANE HUMBERTO IS EXPECTED TO BRING RAINFALL OF 1 TO
2 INCHES, OR 25 TO 50 MM, TO BERMUDA TONIGHT THROUGH TUESDAY.
NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY AT 500 AM AST.
FORECASTER HAGEN
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