Tropical Storm Douglas Forecast Discussion
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000 WTPZ44 KNHC 012039 TCDEP4 Tropical Storm Douglas Discussion Number 3 NWS National Hurricane Center Miami FL EP042026 200 PM PDT Wed Jul 01 2026 A scatterometer pass from earlier this morning showed a well-defined, albeit slightly elongated center, with a few 30-33 kt wind vectors to the north and northwest of center. The subjective Dvorak estimate from TAFB was 35 kt, and various other objective estimates range from 31-35 kt. Based on these data and increasing banding features, the depression has been upgraded to Tropical Storm Douglas within an initial intensity set at 35 kt. Douglas is moving northward at 350/6 kt. This motion will continue into Thursday as a mid-level ridge prevails to the east in the central portion of the East Pacific. The latest NHC track forecast has been shifted to the west for the first 24 h and lies in near HCCA, and between the previous forecast and Google DeepMind. Toward the end of the week, a slow turn toward the northwest, then west-northwest is expected as the system weakens and turns into the low-level flow. The forecast beyond 24 h has been shifted to the right and lies among various consensus aids. The storm is embedded within a moist low and mid-level environment with low wind shear and warm SSTs. A favorable environment may allow for some slight strengthening through tonight, which is supported by HCCA and Google DeepMind. As the storm encounters increasing mid-level dry air, cooler waters and decreasing upper-level divergence Thursday and Friday, slow weakening is expected, and Douglas may struggle to produce organized deep convection by this weekend. The latest NHC forecast shows a post-tropical cyclone by 48 h, dissipating into an open trough by the end of the forecast period. FORECAST POSITIONS AND MAX WINDS INIT 01/2100Z 15.7N 127.0W 35 KT 40 MPH 12H 02/0600Z 16.7N 127.1W 40 KT 45 MPH 24H 02/1800Z 17.7N 127.3W 35 KT 40 MPH 36H 03/0600Z 18.8N 127.6W 30 KT 35 MPH 48H 03/1800Z 19.7N 128.2W 25 KT 30 MPH...POST-TROPICAL 60H 04/0600Z 20.5N 129.1W 25 KT 30 MPH...POST-TROPICAL 72H 04/1800Z 21.0N 130.3W 20 KT 25 MPH...POST-TROPICAL 96H 05/1800Z 22.5N 133.2W 20 KT 25 MPH...POST-TROPICAL 120H 06/1800Z...DISSIPATED $$ Forecaster Adams/Beven