21 Jan 2025 - 14:54 EST
21 Jan 2025 - 19:54 UTC

Post-tropical Cyclone Irwin at 19.1°N - 130.3°W

North Pacific Ocean

Last observation: 30 Aug 2023 - 05:10 UTC

« 2023 Storms »

27 Aug 2023 - 29 Aug 2023

Links and Animation
PTC Irwin - RGB Loops
PTC Irwin - Channel Loops

Storm images and information

Download images

NHC Storm Description:

29 Aug 2023 - 21:00 UTC ...IRWIN BECOMES A POST-TROPICAL CYCLONE... ...THIS IS THE LAST NHC ADVISORY... As of 11:00 AM HST Tue Aug 29 the center of Irwin was located near 19.1, -130.3 with movement W at 17 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 40 mph.

29 Aug 2023 - 15:00 UTC ...IRWIN BARELY A TROPICAL CYCLONE... As of 5:00 AM HST Tue Aug 29 the center of Irwin was located near 19.6, -129.1 with movement W at 17 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 40 mph.

More storm history

29 Aug 2023 - 9:00 UTC ...IRWIN NOW HEADED WESTWARD... As of 11:00 PM HST Mon Aug 28 the center of Irwin was located near 19.5, -127.1 with movement W at 16 mph. The minimum central pressure was 1001 mb with maximum sustained winds of about 40 mph.

29 Aug 2023 - 3:00 UTC ...IRWIN MOVING WEST-NORTHWESTWARD OVER COOLER WATERS... As of 5:00 PM HST Mon Aug 28 the center of Irwin was located near 19.3, -125.7 with movement WNW at 15 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 40 mph.

28 Aug 2023 - 21:00 UTC ...IRWIN MOVING WEST-NORTHWESTWARD OVER COOLER WATERS... As of 11:00 AM HST Mon Aug 28 the center of Irwin was located near 18.6, -124.2 with movement WNW at 10 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 40 mph.

28 Aug 2023 - 15:00 UTC ...IRWIN HOLDS STEADY AND EXPECTED TO TURN WEST SOON... As of 5:00 AM HST Mon Aug 28 the center of Irwin was located near 18.0, -123.6 with movement WNW at 8 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 40 mph.

28 Aug 2023 - 9:00 UTC ...IRWIN TO HEAD WEST WITH ONLY SMALL INTENSITY FLUCTUATIONS EXPECTED... As of 11:00 PM HST Sun Aug 27 the center of Irwin was located near 17.6, -123.0 with movement WNW at 10 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 40 mph.

28 Aug 2023 - 3:00 UTC ...LARGE IRWIN FORECAST TO HEAD WESTWARD FOR THE NEXT SEVERAL DAYS... As of 5:00 PM HST Sun Aug 27 the center of Irwin was located near 17.4, -122.5 with movement WNW at 12 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 40 mph.

27 Aug 2023 - 21:00 UTC ...IRWIN MOVING WEST-NORTHWESTWARD OVER THE TROPICAL EASTERN PACIFIC WITH NO CHANGE IN STRENGTH... As of 11:00 AM HST Sun Aug 27 the center of Irwin was located near 17.2, -121.3 with movement WNW at 10 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 40 mph.

27 Aug 2023 - 15:00 UTC ...DEPRESSION BECOMES TROPICAL STORM IRWIN... As of 5:00 AM HST Sun Aug 27 the center of Irwin was located near 16.8, -120.7 with movement WNW at 12 mph. The minimum central pressure was 998 mb with maximum sustained winds of about 40 mph.

27 Aug 2023 - 9:00 UTC ...TROPICAL DEPRESSION CONTINUES WITH LITTLE CHANGE IN STRENGTH... As of 11:00 PM HST Sat Aug 26 the center of Ten-E was located near 16.6, -119.6 with movement WNW at 12 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 35 mph.

27 Aug 2023 - 3:00 UTC ...NEW TROPICAL DEPRESSION FORMS... ...EXPECTED TO BE NO THREAT TO LAND... As of 5:00 PM HST Sat Aug 26 the center of Ten-E was located near 16.1, -118.6 with movement NW at 9 mph. The minimum central pressure was 1000 mb with maximum sustained winds of about 35 mph.