4 Apr 2025 - 09:12 EDT
4 Apr 2025 - 13:12 UTC

Post-tropical Cyclone Isaac at 44.8°N - 29.1°W

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Last observation: 30 Sep 2024 - 23:10 UTC

« 2024 Storms »

26 Sep 2024 - 30 Sep 2024

Approximately 2600 miles from the U.S. east coast

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NHC Storm Description:

30 Sep 2024 - 15:00 UTC ...ISAAC BECOMES A POST-TROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... As of 3:00 PM GMT Mon Sep 30 the center of Isaac was located near 44.8, -29.1 with movement ENE at 17 mph. The minimum central pressure was 983 mb with maximum sustained winds of about 60 mph.

30 Sep 2024 - 9:00 UTC ...ISAAC EXPECTED TO BECOME POST-TROPICAL LATER TODAY... As of 9:00 AM GMT Mon Sep 30 the center of Isaac was located near 44.7, -31.3 with movement ENE at 15 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 65 mph.

More storm history

30 Sep 2024 - 3:00 UTC ...ISAAC FORECAST TO BECOME POST-TROPICAL LATER TODAY... As of 3:00 AM GMT Mon Sep 30 the center of Isaac was located near 44.4, -32.8 with movement NE at 14 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 65 mph.

29 Sep 2024 - 21:00 UTC ...LARGE SWELLS AND DANGEROUS SURF IMPACTING THE AZORES... As of 9:00 PM GMT Sun Sep 29 the center of Isaac was located near 43.8, -34.7 with movement NE at 12 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 70 mph.

29 Sep 2024 - 15:00 UTC ...ISAAC CONTINUES MOVING TOWARDS THE NORTHEAST OVER THE OPEN ATLANTIC... ...LARGE AREA OF DANGEROUS HIGH SEAS SURROUND THE HURRICANE... As of 3:00 PM GMT Sun Sep 29 the center of Isaac was located near 43.2, -35.6 with movement NE at 12 mph. The minimum central pressure was 971 mb with maximum sustained winds of about 75 mph.

29 Sep 2024 - 9:00 UTC ...ISAAC STILL A HURRICANE... ...LARGE AREA OF DANGEROUS HIGH SEAS SPREADING SEVERAL HUNDRED MILES FROM ISAAC'S CENTER... As of 9:00 AM GMT Sun Sep 29 the center of Isaac was located near 42.6, -36.5 with movement NE at 13 mph. The minimum central pressure was 969 mb with maximum sustained winds of about 80 mph.

29 Sep 2024 - 3:00 UTC ...ISAAC CONTINUES WEAKENING... As of 3:00 AM GMT Sun Sep 29 the center of Isaac was located near 42.1, -37.6 with movement NE at 14 mph. The minimum central pressure was 972 mb with maximum sustained winds of about 80 mph.

28 Sep 2024 - 21:00 UTC ...ISAAC STILL A CATEGORY 2 HURRICANE BUT FORECAST TO WEAKEN... As of 9:00 PM GMT Sat Sep 28 the center of Isaac was located near 41.3, -38.4 with movement NE at 18 mph. The minimum central pressure was 968 mb with maximum sustained winds of about 100 mph.

28 Sep 2024 - 15:00 UTC ...ISAAC REMAINS A CATEGORY TWO HURRICANE OVER THE CENTRAL ATLANTIC... As of 3:00 PM GMT Sat Sep 28 the center of Isaac was located near 40.2, -39.7 with movement ENE at 20 mph. The minimum central pressure was 968 mb with maximum sustained winds of about 105 mph.

28 Sep 2024 - 9:00 UTC ...ISAAC CONTINUES TO STRENGTHEN OVER THE SUBTROPICAL ATLANTIC... ...LARGE AREA OF DANGEROUS HIGH SEAS SPREADING SOUTH OF THE HURRICANE... As of 9:00 AM GMT Sat Sep 28 the center of Isaac was located near 39.3, -41.3 with movement NE at 20 mph. The minimum central pressure was 968 mb with maximum sustained winds of about 105 mph.

28 Sep 2024 - 3:00 UTC ...ISAAC CONTINUES TO STRENGTHEN... As of 3:00 AM GMT Sat Sep 28 the center of Isaac was located near 38.2, -43.4 with movement ENE at 16 mph. The minimum central pressure was 973 mb with maximum sustained winds of about 90 mph.

27 Sep 2024 - 21:00 UTC ...ISAAC IS INTENSIFYING... As of 5:00 PM AST Fri Sep 27 the center of Isaac was located near 37.8, -45.3 with movement E at 16 mph. The minimum central pressure was 976 mb with maximum sustained winds of about 85 mph.

27 Sep 2024 - 15:00 UTC ...HURRICANE ISAAC HEADING EASTWARD OVER THE NORTH CENTRAL ATLANTIC OCEAN... As of 11:00 AM AST Fri Sep 27 the center of Isaac was located near 37.4, -46.8 with movement ENE at 18 mph. The minimum central pressure was 981 mb with maximum sustained winds of about 75 mph.

27 Sep 2024 - 9:00 UTC ...ISAAC BECOMES A HURRICANE... As of 5:00 AM AST Fri Sep 27 the center of Isaac was located near 37.0, -48.5 with movement E at 12 mph. The minimum central pressure was 981 mb with maximum sustained winds of about 75 mph.

27 Sep 2024 - 3:00 UTC ...ISAAC STRENGTHENING AND LIKELY TO BECOME A HURRICANE SOON... As of 11:00 PM AST Thu Sep 26 the center of Isaac was located near 37.1, -49.8 with movement E at 12 mph. The minimum central pressure was 992 mb with maximum sustained winds of about 65 mph.

26 Sep 2024 - 21:00 UTC ...ISAAC CONTINUING EASTWARD WITH NO CHANGE IN STRENGTH... As of 5:00 PM AST Thu Sep 26 the center of Isaac was located near 37.5, -50.6 with movement E at 10 mph. The minimum central pressure was 995 mb with maximum sustained winds of about 50 mph.

26 Sep 2024 - 15:00 UTC ...ISAAC FORECAST TO STRENGTHEN OVER THE NORTH ATLANTIC DURING THE NEXT COUPLE OF DAYS... As of 11:00 AM AST Thu Sep 26 the center of Isaac was located near 37.3, -51.7 with movement E at 12 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 50 mph.

26 Sep 2024 - 9:00 UTC ...ISAAC CONTINUES EASTWARD AND COULD BECOME A HURRICANE IN A COUPLE OF DAYS... As of 5:00 AM AST Thu Sep 26 the center of Isaac was located near 37.1, -52.8 with movement E at 12 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 50 mph.

26 Sep 2024 - 3:00 UTC ...NEW TROPICAL STORM FORMS IN THE OPEN CENTRAL SUBTROPICAL ATLANTIC... As of 11:00 PM AST Wed Sep 25 the center of Isaac was located near 37.1, -54.1 with movement E at 12 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 50 mph.