Past storm
Post-Tropical Cyclone Iselle
Final NHC advisoryNHC issued its final advisory for Iselle. The final official forecast graphic, interactive track, wind animation based on NOAA data, and recent official advisories are preserved below.
Highest classification reached: Tropical StormAug 23–27, 2026
Iselle advisory updated:
Key Facts
- Type
- Post-Tropical Cyclone
- Max sustained wind
- 35 mph
- Min pressure
- 1002 mb
- Movement
- WNW 9 mph
- Distance to BCS
- 759 mi
- Type
- Post-Tropical Cyclone
- Max sustained wind
- 35 mph
- Min pressure
- 1002 mb
- Movement
- WNW 9 mph
- Distance to BCS
- 759 mi
Historical Track
IsellePost-TropicalMax wind35 mph
Map sources: NHC storm track and coneNOAA GFS wind. Visualization by BajaStorms.
Official Graphics
BajaStorms graphicSource: NOAA/NHC ATCF A-deck ↗
Constructed guidance: Not the official NHC forecast
Advisory Timeline
Advisory Timeline #15
Iselle has become a post-tropical cyclone. This is the final NHC advisory on the system.
Official NHC advisory text
ZCZC MIATCPEP4 ALL TTAA00 KNHC DDHHMM BULLETIN Post-Tropical Cyclone Iselle Advisory Number 15 NWS National Hurricane Center Miami FL EP092026 800 PM PDT Wed Aug 26 2026 ...ISELLE HAS BECOME A POST-TROPICAL CYCLONE... ...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM... SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...23.0N 125.9W ABOUT 1015 MI...1635 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 PM PDT (0300 UTC), the center of Post-Tropical Cyclone Iselle was located near latitude 23.0 North, longitude 125.9 West. The post-tropical cyclone is moving toward the west-northwest near 9 mph (15 km/h) and this motion is expected to continue over the next few days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Iselle has become a Post-Tropical Cyclone and is expected to continue to weaken until it dissipates in a couple of days or less. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Iselle will continue to affect the west coast of the Baja California Peninsula for a couple more days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on this system. For additional information on the remnant low please see High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFEPI, WMO header FZPN01 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php $$ Forecaster Katz/Hagen/Papin NNNN
Source: NOAA / NHC
Advisory Timeline
ISELLE HAS BECOME A POST-TROPICAL CYCLONE. THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM. As of 8:00 PM PDT Wed Aug 26 the center of Iselle was located near 23.0, -125.9 with movement WNW at 9 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 35 mph.
Official NHC advisory text
...ISELLE HAS BECOME A POST-TROPICAL CYCLONE... ...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM... As of 8:00 PM PDT Wed Aug 26 the center of Iselle was located near 23.0, -125.9 with movement WNW at 9 mph. The minimum central pressure was 1002 mb with maximum sustained winds of about 35 mph.
Source: NOAA / NHC
Advisory Timeline #14
Iselle continues to weaken. Forecast to become a post-tropical cyclone tonight.
Official NHC advisory text
ZCZC MIATCPEP4 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Storm Iselle Advisory Number 14 NWS National Hurricane Center Miami FL EP092026 200 PM PDT Wed Aug 26 2026 ...ISELLE CONTINUES TO WEAKEN... ...FORECAST TO BECOME A POST-TROPICAL CYCLONE TONIGHT... SUMMARY OF 200 PM PDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...22.7N 124.9W ABOUT 955 MI...1535 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 PM PDT (2100 UTC), the center of Tropical Storm Iselle was located near latitude 22.7 North, longitude 124.9 West. Iselle is moving toward the west-northwest near 10 mph (17 km/h) and this general motion is expected to continue over the next few days. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Steady weakening is expected, and Iselle is forecast to become a post-tropical remnant low by tonight. Tropical-storm-force winds extend outward up to 160 miles (260 km) from the center. The estimated minimum central pressure is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Iselle will continue to affect the west coast of the Baja California Peninsula for a couple more days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 800 PM PDT. $$ Forecaster Kelly NNNN
Source: NOAA / NHC
Advisory Timeline #13
Iselle weakens. Forecast to become a post-tropical cyclone tonight.
Official NHC advisory text
ZCZC MIATCPEP4 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Storm Iselle Advisory Number 13 NWS National Hurricane Center Miami FL EP092026 800 AM PDT Wed Aug 26 2026 ...ISELLE WEAKENS... ...FORECAST TO BECOME A POST-TROPICAL CYCLONE TONIGHT... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...22.2N 124.0W ABOUT 900 MI...1450 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Tropical Storm Iselle was located near latitude 22.2 North, longitude 124.0 West. Iselle is moving toward the west-northwest near 9 mph (15 km/h) and this general motion is expected to continue over the next few days. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Steady weakening is expected, and Iselle is forecast to become a post-tropical remnant low by tonight. Tropical-storm-force winds extend outward up to 230 miles (370 km) from the center. The estimated minimum central pressure is 999 mb (29.50 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Iselle will continue to affect the west coast of the Baja California Peninsula for a couple more days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Kelly NNNN
Source: NOAA / NHC
Advisory Timeline #12
Iselle drifting west-northwestward.
Official NHC advisory text
ZCZC MIATCPEP4 ALL TTAA00 KNHC DDHHMM BULLETIN Tropical Storm Iselle Advisory Number 12 NWS National Hurricane Center Miami FL EP092026 200 AM PDT Wed Aug 26 2026 ...ISELLE DRIFTING WEST-NORTHWESTWARD... SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...21.8N 123.5W ABOUT 870 MI...1405 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM PDT (0900 UTC), the center of Tropical Storm Iselle was located near latitude 21.8 North, longitude 123.5 West. Iselle is moving toward the west-northwest near 9 mph (15 km/h), and this general motion is expected to continue over the next few days. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Steady weakening is expected, and Iselle is forecast to become a post-tropical remnant low by early Thursday. Tropical-storm-force winds extend outward up to 230 miles (370 km) from the center. The estimated minimum central pressure is 996 mb (29.42 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Iselle will continue to affect the west coast of the Baja California Peninsula for a couple more days. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 800 AM PDT. $$ Forecaster Adams NNNN
Source: NOAA / NHC