This storm is no longer active.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.
55
kt at peak
996
mb minimum
7.8
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 WTPZ34 KNHC 150232 TCPEP4 BULLETIN Tropical Depression Norbert Advisory Number 22 NWS National Hurricane Center Miami FL EP142026 500 PM HST Mon Sep 14 2026 ...NORBERT LIKELY TO WEAKEN INTO A REMNANT LOW TOMORROW... SUMMARY OF 500 PM HST...0300 UTC...INFORMATION ---------------------------------------------- LOCATION...20.2N 140.5W ABOUT 950 MI...1525 KM E OF HILO HAWAII MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM HST (0300 UTC), the center of Tropical Depression Norbert was located near latitude 20.2 North, longitude 140.5 West. The depression is moving toward the west-northwest near 15 mph (24 km/h) and a generally westward motion is expected over the next couple of days. Maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Continued gradual weakening is forecast during the next 48 hours, and Norbert is expected to become a post-tropical remnant low tomorrow. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Future information on Norbert can be found under Central Pacific basin headers starting with the next advisory at 1100 PM HST, under AWIPS header HFOTCPCP1, WMO header WTPA31 PHFO. Products will continue to be available on the web at hurricanes.gov. Next complete advisory at 1100 PM HST. $$ Forecaster Pasch
Forecast Discussion — the forecaster's reasoning
000 WTPZ44 KNHC 150232 TCDEP4 Tropical Depression Norbert Discussion Number 22 NWS National Hurricane Center Miami FL EP142026 500 PM HST Mon Sep 14 2026 Deep convection has decreased dramatically in association with Norbert over the past several hours. A fairly recent Oceansat scatterometer pass and a Dvorak classification from TAFB indicate that the system has dropped below tropical storm strength, and the advisory intensity is reduced to 30 kt. Norbert is moving a little north of west with an initial motion estimate of 285/13 kt. The cyclone should move mainly westward within the flow south of a low- to mid-level subtropical ridge for the next couple of days. The official track forecast is close to the latest corrected model consensus, HCCA, guidance. The system should remain in an environment of strong vertical wind shear and relatively dry and stable air for the next few days. Therefore, the cyclone is expected to become post-tropical within 24 hours and then open up into a trough by Wednesday. Now that Norbert is in the Central Pacific, additional information on this system can be found under Central Pacific basin headers beginning with the next advisory at 1100 PM HST. Future Tropical Cyclone Discussions will be issued under AWIPS header HFOTCDCP1 and WMO header WTPA41 PHFO. Products will continue to be available on the web at hurricanes.gov FORECAST POSITIONS AND MAX WINDS INIT 15/0300Z 20.2N 140.5W 30 KT 35 MPH 12H 15/1200Z 20.5N 142.4W 30 KT 35 MPH 24H 16/0000Z 20.7N 145.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 16/1200Z 20.8N 147.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 17/0000Z...DISSIPATED $$ Forecaster Pasch
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.