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Tropical Storm Jimena Forecast Discussion Number 13
2021-08-06 04:31:35| National Hurricane Center (East Pacific)
Issued at 500 PM HST Thu Aug 05 2021 000 WTPZ44 KNHC 060231 TCDEP4 Tropical Storm Jimena Discussion Number 13 NWS National Hurricane Center Miami FL EP092021 500 PM HST Thu Aug 05 2021 Jimena is approaching the Central Pacific basin. The compact tropical storm has generally changed little during the past several hours, and it continues to have curved bands that wrap across the western half of the circulation. The Dvorak classifications from TAFB, SAB, and the University of Wisconsin range from 35 to 45 kt. The initial intensity is held at 35 kt, but Jimena could be a little stronger. Unfortunately, all of the ASCAT passes missed the system earlier today, but new data from the instrument may be available tonight. The storm continues to move northwestward at about 6 kt. A gradual turn to the left, or toward the west, is expected during the next few days as the storm loses deep convection and is steered primarily by the low-level trade wind flow. The NHC track forecast has been adjusted to the south of the previous one, trending toward the latest guidance. Jimena has now crossed the 26 C isotherm and is expected to move over progressively cooler waters during the next couple of days. These cool waters combined with a drier airmass and an increase in shear should cause steady weakening. Jimena is expected to become a remnant low by 36 hours and dissipate in a few days. FORECAST POSITIONS AND MAX WINDS INIT 06/0300Z 16.9N 137.8W 35 KT 40 MPH 12H 06/1200Z 17.5N 138.7W 35 KT 40 MPH 24H 07/0000Z 18.2N 140.2W 30 KT 35 MPH 36H 07/1200Z 18.7N 141.9W 30 KT 35 MPH...POST-TROP/REMNT LOW 48H 08/0000Z 19.0N 143.4W 25 KT 30 MPH...POST-TROP/REMNT LOW 60H 08/1200Z 19.4N 144.8W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 09/0000Z...DISSIPATED $$ Forecaster Cangialosi
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