21 Nov 2024 - 07:03 EST
21 Nov 2024 - 12:03 UTC

Post-tropical Cyclone Calvin at 17.9°N - 158.5°W

North Pacific Ocean

Last observation: 20 Jul 2023 - 05:10 UTC

« 2023 Storms »

11 Jul 2023 - 19 Jul 2023

Approximately 300 miles from Hawaii

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NHC Storm Description:

19 Jul 2023 - 21:00 UTC ...CALVIN BECOMES POST-TROPICAL AS IT PULLS AWAY FROM HAWAII... ...THIS IS THE FINAL ADVISORY... As of 11:00 AM HST Wed Jul 19 the center of Calvin was located near 17.9, -158.5 with movement W at 20 mph. The minimum central pressure was 1009 mb with maximum sustained winds of about 40 mph.

19 Jul 2023 - 18:00 UTC ...CALVIN PASSING SOUTH OF HAWAII WITH FLOODING IMPACTS ON THE BIG ISLAND... As of 8:00 AM HST Wed Jul 19 the center of Calvin was located near 17.9, -157.6 with movement W at 20 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.

More storm history

19 Jul 2023 - 15:00 UTC ...TROPICAL STORM CALVIN PASSING SOUTH OF THE BIG ISLAND... ...IMPACTS IN HAWAII COUNTY CONTINUE... As of 5:00 AM HST Wed Jul 19 the center of Calvin was located near 17.8, -156.8 with movement W at 20 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.

19 Jul 2023 - 12:00 UTC ...TROPICAL STORM CALVIN PASSING SOUTH OF THE BIG ISLAND... ...IMPACTS IN HAWAII COUNTY ARE IMMINENT OR OCCURRING... As of 2:00 AM HST Wed Jul 19 the center of Calvin was located near 17.7, -155.6 with movement W at 20 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 50 mph.

19 Jul 2023 - 10:30 UTC ...TROPICAL STORM CALVIN PASSING SOUTH OF THE BIG ISLAND... As of 12:30 AM HST Wed Jul 19 the center of Calvin was located near 17.7, -155.4 with movement W at 20 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 50 mph.

19 Jul 2023 - 9:00 UTC ...TROPICAL STORM CALVIN BEGINNING TO PASS SOUTH OF THE BIG ISLAND... ...IMPACTS IN HAWAII COUNTY ARE IMMINENT OR OCCURRING... As of 11:00 PM HST Tue Jul 18 the center of Calvin was located near 17.7, -155.2 with movement W at 20 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 50 mph.

19 Jul 2023 - 6:00 UTC ...TROPICAL STORM CALVIN APPROACHING THE BIG ISLAND... ...IMPACTS IN HAWAII COUNTY ARE IMMINENT... As of 8:00 PM HST Tue Jul 18 the center of Calvin was located near 17.8, -154.1 with movement W at 21 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 60 mph.

19 Jul 2023 - 3:00 UTC ...TROPICAL STORM CALVIN APPROACHING THE BIG ISLAND... ...IMPACTS IN HAWAII COUNTY STARTING THIS EVENING... As of 5:00 PM HST Tue Jul 18 the center of Calvin was located near 17.8, -153.3 with movement W at 21 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 60 mph.

19 Jul 2023 - 0:00 UTC ...TROPICAL STORM CALVIN STRENGTHENS FURTHER... ...IMPACTS IN HAWAII COUNTY STARTING THIS EVENING... As of 2:00 PM HST Tue Jul 18 the center of Calvin was located near 17.8, -152.3 with movement W at 21 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 60 mph.

18 Jul 2023 - 21:00 UTC ...TROPICAL STORM CALVIN SLIGHTLY STRONGER THIS MORNING... ...IMPACTS IN HAWAII COUNTY STARTING THIS EVENING... As of 11:00 AM HST Tue Jul 18 the center of Calvin was located near 17.8, -151.9 with movement W at 22 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

18 Jul 2023 - 18:00 UTC ...TROPICAL STORM CALVIN STEADILY MOVING TOWARD THE BIG ISLAND OF HAWAII WITH IMPACTS STARTING THIS EVENING... As of 8:00 AM HST Tue Jul 18 the center of Calvin was located near 17.6, -150.5 with movement W at 22 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 15:00 UTC ...TROPICAL STORM CALVIN TAKING AIM AT THE BIG ISLAND OF HAWAII WITH IMPACTS STARTING THIS EVENING... As of 5:00 AM HST Tue Jul 18 the center of Calvin was located near 17.5, -149.5 with movement W at 22 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 12:00 UTC ...DEEP CONVECTION INCREASING NEAR CALVIN AS IT TRACKS RAPIDLY WESTWARD TOWARD THE BIG ISLAND... ...TROPICAL STORM WARNINGS REMAIN IN EFFECT FOR HAWAII COUNTY... As of 2:00 AM HST Tue Jul 18 the center of Calvin was located near 17.4, -148.4 with movement W at 22 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 9:00 UTC ...TROPICAL STORM CALVIN CONTINUES TO CHURN TOWARD THE BIG ISLAND... ...TROPICAL STORM WARNINGS REMAIN IN EFFECT FOR HAWAII COUNTY... As of 11:00 PM HST Mon Jul 17 the center of Calvin was located near 17.4, -147.5 with movement W at 22 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 6:00 UTC ...TROPICAL STORM CALVIN MOVING RAPIDLY WESTWARD TOWARD THE BIG ISLAND... ...TROPICAL STORM WARNINGS REMAIN IN EFFECT FOR HAWAII COUNTY... As of 8:00 PM HST Mon Jul 17 the center of Calvin was located near 17.3, -146.5 with movement W at 21 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 3:00 UTC ...TROPICAL STORM CALVIN MOVING WESTWARD TOWARD THE BIG ISLAND... ...TROPICAL STORM WARNING ISSUED FOR HAWAII COUNTY... As of 5:00 PM HST Mon Jul 17 the center of Calvin was located near 17.4, -145.4 with movement W at 22 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph.

18 Jul 2023 - 0:00 UTC ...TROPICAL STORM CALVIN MOVING RAPIDLY WESTWARD... ...TROPICAL STORM WATCH REMAINS IN EFFECT FOR HAWAII COUNTY... As of 2:00 PM HST Mon Jul 17 the center of Calvin was located near 17.4, -144.4 with movement W at 22 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 50 mph.

17 Jul 2023 - 21:00 UTC ...HURRICANE HUNTERS FLYING INTO TROPICAL STORM CALVIN... ...TROPICAL STORM WATCH REMAINS IN EFFECT FOR HAWAII COUNTY... As of 11:00 AM HST Mon Jul 17 the center of Calvin was located near 17.3, -143.3 with movement W at 21 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

17 Jul 2023 - 18:00 UTC ...TROPICAL STORM CALVIN MOVING WEST TOWARD THE HAWAIIAN ISLANDS... ...TROPICAL STORM WATCH REMAINS IN EFFECT FOR HAWAII COUNTY... As of 8:00 AM HST Mon Jul 17 the center of Calvin was located near 17.1, -142.3 with movement W at 20 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

17 Jul 2023 - 15:00 UTC ...TROPICAL STORM CALVIN ENTERS THE CENTRAL PACIFIC... ...TROPICAL STORM WATCH ISSUED FOR HAWAII COUNTY... As of 5:00 AM HST Mon Jul 17 the center of Calvin was located near 16.8, -141.4 with movement W at 18 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

17 Jul 2023 - 9:00 UTC ...CALVIN EXPECTED TO BE NEAR THE HAWAIIAN ISLANDS BY TUESDAY NIGHT OR EARLY WEDNESDAY... ...THIS IS THE LAST ADVISORY FROM THE NATIONAL HURRICANE CENTER... As of 11:00 PM HST Sun Jul 16 the center of Calvin was located near 16.7, -139.7 with movement W at 18 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 50 mph.

17 Jul 2023 - 3:00 UTC ...CALVIN NEARING THE CENTRAL PACIFIC BASIN... ...EXPECTED TO BE NEAR THE HAWAIIAN ISLANDS BY LATE TUESDAY OR EARLY WEDNESDAY... As of 5:00 PM HST Sun Jul 16 the center of Calvin was located near 16.4, -137.9 with movement W at 17 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 60 mph.

16 Jul 2023 - 21:00 UTC ...CALVIN MOVING WESTWARD TOWARD THE CENTRAL PACIFIC BASIN... As of 11:00 AM HST Sun Jul 16 the center of Calvin was located near 16.1, -136.3 with movement W at 16 mph. The minimum central pressure was 996 mb with maximum sustained winds of about 65 mph.

16 Jul 2023 - 15:00 UTC ...CALVIN NOW A TROPICAL STORM... As of 5:00 AM HST Sun Jul 16 the center of Calvin was located near 16.0, -134.8 with movement WNW at 16 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 70 mph.

16 Jul 2023 - 9:00 UTC ...CALVIN WEAKENING TONIGHT... As of 11:00 PM HST Sat Jul 15 the center of Calvin was located near 15.7, -133.4 with movement WNW at 17 mph. The minimum central pressure was 982 mb with maximum sustained winds of about 80 mph.

16 Jul 2023 - 3:00 UTC ...CALVIN MOVING WEST-NORTHWESTWARD OVER OPEN WATERS... ...EXPECTED TO MOVE INTO THE CENTRAL PACIFIC BASIN EARLY MONDAY... As of 5:00 PM HST Sat Jul 15 the center of Calvin was located near 15.4, -132.0 with movement WNW at 17 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 100 mph.

15 Jul 2023 - 21:00 UTC ...CALVIN MOVING WESTWARD OVER OPEN WATERS... ...EXPECTED TO MOVE INTO THE CENTRAL PACIFIC BASIN EARLY MONDAY... As of 11:00 AM HST Sat Jul 15 the center of Calvin was located near 15.0, -130.4 with movement W at 16 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 100 mph.

15 Jul 2023 - 15:00 UTC ...CALVIN CONTINUES WEST-NORTHWESTWARD OVER THE EASTERN PACIFIC... As of 5:00 AM HST Sat Jul 15 the center of Calvin was located near 14.7, -129.0 with movement WNW at 16 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 100 mph.

15 Jul 2023 - 9:00 UTC ...CALVIN WEAKENS FURTHER WHILE MOVING OVER THE OPEN TROPICAL EASTERN PACIFIC... As of 11:00 PM HST Fri Jul 14 the center of Calvin was located near 14.5, -127.5 with movement WNW at 16 mph. The minimum central pressure was 968 mb with maximum sustained winds of about 105 mph.

15 Jul 2023 - 3:00 UTC ...CALVIN WEAKENS SLIGHTLY AS IT CONTINUES WEST-NORTHWESTWARD... As of 5:00 PM HST Fri Jul 14 the center of Calvin was located near 14.2, -126.0 with movement WNW at 16 mph. The minimum central pressure was 958 mb with maximum sustained winds of about 120 mph.

14 Jul 2023 - 21:00 UTC ...CALVIN STRENGTHENS A LITTLE MORE... As of 11:00 AM HST Fri Jul 14 the center of Calvin was located near 13.8, -124.6 with movement WNW at 16 mph. The minimum central pressure was 955 mb with maximum sustained winds of about 125 mph.

14 Jul 2023 - 15:00 UTC ...CALVIN RAPIDLY INTENSIFIES INTO A MAJOR HURRICANE... As of 5:00 AM HST Fri Jul 14 the center of Calvin was located near 13.6, -123.2 with movement W at 16 mph. The minimum central pressure was 960 mb with maximum sustained winds of about 120 mph.

14 Jul 2023 - 9:00 UTC ...CALVIN STILL STRENGTHENING... As of 11:00 PM HST Thu Jul 13 the center of Calvin was located near 13.2, -121.9 with movement W at 16 mph. The minimum central pressure was 970 mb with maximum sustained winds of about 105 mph.

14 Jul 2023 - 3:00 UTC ...CALVIN QUICKLY STRENGTHENING... As of 5:00 PM HST Thu Jul 13 the center of Calvin was located near 13.3, -120.5 with movement W at 15 mph. The minimum central pressure was 978 mb with maximum sustained winds of about 100 mph.

13 Jul 2023 - 21:00 UTC ...HURRICANE CALVIN CONTINUES TO STRENGTHEN ... As of 11:00 AM HST Thu Jul 13 the center of Calvin was located near 12.8, -118.7 with movement W at 14 mph. The minimum central pressure was 990 mb with maximum sustained winds of about 80 mph.

13 Jul 2023 - 15:00 UTC ...CALVIN BECOMES THE THIRD HURRICANE OF EAST PACIFIC SEASON... As of 5:00 AM HST Thu Jul 13 the center of Calvin was located near 12.7, -117.1 with movement W at 13 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 75 mph.

13 Jul 2023 - 9:00 UTC ...CALVIN EXPECTED TO BECOME A HURRICANE VERY SOON... As of 11:00 PM HST Wed Jul 12 the center of Calvin was located near 12.4, -116.0 with movement W at 15 mph. The minimum central pressure was 995 mb with maximum sustained winds of about 70 mph.

13 Jul 2023 - 3:00 UTC ...CALVIN SLIGHTLY STRONGER... As of 5:00 PM HST Wed Jul 12 the center of Calvin was located near 12.6, -114.9 with movement W at 17 mph. The minimum central pressure was 995 mb with maximum sustained winds of about 70 mph.

12 Jul 2023 - 21:00 UTC ...CALVIN STRENGTHENING... ...FORECAST TO BECOME A HURRICANE TONIGHT... As of 11:00 AM HST Wed Jul 12 the center of Calvin was located near 12.8, -113.8 with movement W at 17 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 65 mph.

12 Jul 2023 - 15:00 UTC ...CALVIN CONTINUES TO STRENGTHEN... ...FORECAST TO BECOME A HURRICANE TOMORROW... As of 5:00 AM HST Wed Jul 12 the center of Calvin was located near 12.7, -112.2 with movement W at 16 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 50 mph.

12 Jul 2023 - 9:00 UTC ...DEPRESSION BECOMES A TROPICAL STORM... ...ADDITIONAL STRENGTHENING IS FORECAST... As of 3:00 AM MDT Wed Jul 12 the center of Calvin was located near 12.4, -110.6 with movement W at 16 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 45 mph.

12 Jul 2023 - 3:00 UTC ...TROPICAL DEPRESSION THREE-E EXPECTED TO BECOME A TROPICAL STORM LATER TONIGHT OR ON WEDNESDAY... As of 9:00 PM MDT Tue Jul 11 the center of Three-E was located near 12.6, -109.4 with movement W at 17 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.

11 Jul 2023 - 21:00 UTC ...TROPICAL DEPRESSION THREE-E FORMS SOUTH OF MEXICO... ...FORECAST TO STRENGTHEN AS IT MOVES WESTWARD... As of 3:00 PM MDT Tue Jul 11 the center of Three-E was located near 12.5, -107.9 with movement WNW at 21 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.