Tropical Storm Hernan
EP082026 Eastern PacificCurrent Conditions
As of Aug 15, 09:00 PM UTC
- Position
- 15.8°N 135.9°W
- Intensity
- 25 kt
- Pressure
- 1009.0 mb
- Classification
- Post-Tropical Cyclone
- Movement
- 270° at 10 kt
Track & cone
Best track Forecast track Cone
Intensity: TD TS Cat 1 Cat 2 Cat 3 Cat 4 Cat 5 L Post-tropical / low Radii: 34 50 64 kt · click points for detail
Advisories
All 12 advisories →NHC Advisory 012 Aug 15, 08:42 PM UTC
000 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
Track
| Time | Position | Intensity | Pressure | Class |
|---|---|---|---|---|
| Observed · best track | ||||
| Aug 13, 06:00 PM UTC | 17.8°N 132.1°W | 40 kt | 1003.0 mb | Tropical Storm |
| Aug 14, 12:00 AM UTC | 17.1°N 131.9°W | 35 kt | 1004.0 mb | Tropical Storm |
| Aug 14, 06:00 AM UTC | 16.5°N 131.9°W | 35 kt | 1004.0 mb | Tropical Storm |
| Aug 14, 12:00 PM UTC | 15.6°N 132.0°W | 35 kt | 1004.0 mb | Tropical Storm |
| Aug 14, 06:00 PM UTC | 15.6°N 132.0°W | 30 kt | 1006.0 mb | Tropical Depression |
| Aug 15, 12:00 AM UTC | 16.1°N 132.1°W | 30 kt | 1005.0 mb | Tropical Depression |
| Aug 15, 06:00 AM UTC | 16.3°N 133.2°W | 30 kt | 1006.0 mb | Tropical Depression |
| Aug 15, 12:00 PM UTC | 16.1°N 134.4°W | 30 kt | 1006.0 mb | Tropical Depression |
| Aug 15, 06:00 PM UTC | 15.8°N 135.4°W | 25 kt | 1009.0 mb | Tropical Depression |
| Aug 15, 09:00 PM UTC | 15.8°N 135.9°W | 25 kt | 1009.0 mb | Post-Tropical Cyclone |
| Forecast NHC official · issued Aug 15, 06:00 PM UTC | ||||
| Aug 16, 06:00 AM UTC +12h | 15.9°N 137.5°W | 25 kt | — | Low |
| Aug 16, 06:00 PM UTC +24h | 16.1°N 139.8°W | 20 kt | — | Low |
| Aug 17, 06:00 AM UTC +36h | 16.4°N 141.7°W | 20 kt | — | Low |
| Aug 17, 06:00 PM UTC +48h | 16.5°N 143.7°W | 20 kt | — | Low |
Recon & fixes
Latest fix
Dvorak (subjective)Newest observation of any type. No aircraft fix received for this storm.
Aug 15, 06:00 PM UTC 72 d ago
- Pressure
- —
- Wind
- —
- Center fix
- 16.0°N 135.3°W
| Time | Source | Position | Wind | Pressure | Notes |
|---|---|---|---|---|---|
| Aug 15, 06:00 PM UTC | Dvorak (subjective) | 16.0°N 135.3°W | — | — | TAFB |
| Aug 15, 05:40 PM UTC | Dvorak (objective) | 16.1°N 135.4°W ref | 25 kt | 1006.0 mb | CIMS |
| Aug 15, 03:00 PM UTC | Dvorak (subjective) | 16.1°N 134.8°W | — | — | TAFB |
| Aug 15, 02:40 PM UTC | Dvorak (objective) | 16.1°N 134.8°W ref | 25 kt | 1006.0 mb | CIMS |
| Aug 15, 12:00 PM UTC | Dvorak (subjective) | 16.0°N 134.4°W | 30 kt | 1009.0 mb | TAFB · The center is completely exposed W of the deep conve |
| Aug 15, 11:40 AM UTC | Dvorak (objective) | 16.4°N 134.3°W ref | 31 kt | 1005.0 mb | CIMS |
| Aug 15, 10:51 AM UTC | Microwave | 16.4°N 134.1°W ref | 36 kt | 1002.0 mb meas | CIMS · CIMSS ADT/AiDT/DPRINT CIMSS SSMIS/DMINT |
| Aug 15, 09:56 AM UTC | Microwave | 16.4°N 134.0°W ref | 36 kt | 1003.0 mb meas | CIMS · CIMSS ADT/AiDT/DPRINT CIMSS SSMIS/DMINT |
| Aug 15, 09:00 AM UTC | Dvorak (subjective) | 16.2°N 134.0°W | — | — | TAFB |
| Aug 15, 08:40 AM UTC | Dvorak (objective) | 16.4°N 133.7°W ref | 33 kt | 1004.0 mb | CIMS |
| Aug 15, 08:35 AM UTC | Scatterometer | 16.1°N 133.4°W | 25 kt | — | KNHC · OSCAT Pass at 0835z found peak winds at 25kt |
| Aug 15, 06:00 AM UTC | Dvorak (subjective) | 16.4°N 133.2°W | — | — | TAFB |
72 observations · 16 ATCF working-record analysis records not shown
Observed fixes from NHC's ATCF fix deck. Operational data, subject to later revision.