This storm is no longer active. This page is its permanent record: the complete observed track, peak intensity, the final NHC forecast cone, and the last advisories as issued.
40
kt at peak
1003
mb minimum
5
days tracked
0
vessels in final cone
Intensity over the storm's life — NHC best track
Sustained wind (kt, solid) and central pressure (mb, dashed) from the ATCF best track. Bands mark tropical-storm and hurricane category thresholds.
Final NHC Statements
Public Advisory (final captured)
000 WTPZ33 KNHC 152042 TCPEP3 BULLETIN Post-Tropical Cyclone Hernan Advisory Number 12 NWS National Hurricane Center Miami FL EP082026 1100 AM HST Sat Aug 15 2026 ...HERNAN HAS BECOME A REMNANT LOW... ...THIS IS THE FINAL NHC ADVISORY ON THE SYSTEM... SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION ----------------------------------------------- LOCATION...15.8N 135.9W ABOUT 1760 MI...2835 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1009 MB...29.80 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM HST (2100 UTC), the center of Post-Tropical Cyclone Hernan was located near latitude 15.8 North, longitude 135.9 West. The post-tropical cyclone is moving toward the west near 12 mph (19 km/h) and this general motion is expected to continue through the next few days. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Slow weakening is forecast to occur over the next couple of days before dissipation occurs on Tuesday. The estimated minimum central pressure is 1009 mb (29.80 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on Hernan. 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 $$ Forecaster Katz/Berg
Forecast Discussion — the forecaster's reasoning
406 WTPZ43 KNHC 152042 TCDEP3 Post-Tropical Cyclone Hernan Discussion Number 12 NWS National Hurricane Center Miami FL EP082026 1100 AM HST Sat Aug 15 2026 Hernan continues to remain a swirl of low- to mid-level clouds with no active deep convection. A recent ASCAT pass showed that the winds are around 20 to 25 kts at most in the northern portion of the cyclone. As a result of that, the initial intensity has been lowered to 25 kt. Given that the cyclone is moving into an area of higher shear and drier air, gradual weakening is expected over the next couple of days. The current forecast calls for Hernan to become a trough in about 60 h in agreement with the global models. The initial motion is 255/10 kt. A low- to mid-level ridge to the north should steer Hernan and its remnants westward for the next few days. The new forecast track is similar to, but a little faster than, the previous track. FORECAST POSITIONS AND MAX WINDS INIT 15/2100Z 15.8N 135.9W 25 KT 30 MPH...POST-TROPICAL 12H 16/0600Z 15.9N 137.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 16/1800Z 16.1N 139.8W 20 KT 25 MPH...POST-TROP/REMNT LOW 36H 17/0600Z 16.4N 141.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 17/1800Z 16.5N 143.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 18/0600Z...DISSIPATED $$ Forecaster Katz/Berg
Data & citation
Transit counts are gate-line crossings computed hourly from ChartNav's own live AIS network (terrestrial receivers; coverage varies by zone — the coverage figure above says how complete the picture is, and reporting gaps are only flagged for vessels that were underway and stopped reporting globally). Baselines are rolling medians of complete days. Numbers may differ from weekly satellite-AIS datasets such as IMF PortWatch, which lag by several days but see areas terrestrial receivers cannot.