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Post-Tropical Cyclone Hilda Forecast Discussion Number 28
2021-08-06 16:35:47| National Hurricane Center (East Pacific)
Issued at 800 AM PDT Fri Aug 06 2021 000 WTPZ43 KNHC 061435 TCDEP3 Post-Tropical Cyclone Hilda Discussion Number 28 NWS National Hurricane Center Miami FL EP082021 800 AM PDT Fri Aug 06 2021 Hilda has been devoid of organized deep convection for at least 12 hours, and since the cyclone is moving over sub-23C sea surface temperatures, regeneration of deep convection is unlikely. Therefore, Hilda is designated as a 25 kt post-tropical remnant low, and this is the last advisory from National Hurricane Center. The low should continue to move further into a dry and stable air mass and over even cooler waters. Consequently, weakening is forecast and the remnant low of Hilda should open up into a trough of low pressure over the weekend. The initial motion is estimated to be west-northwestward, or 300/9 kt, and this general heading, within the low-level flow, is forecast to continue until dissipation. For additional information on Hilda please see High Seas Forecasts issued by the National Weather service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php FORECAST POSITIONS AND MAX WINDS INIT 06/1500Z 23.1N 134.1W 25 KT 30 MPH...POST-TROPICAL 12H 07/0000Z 23.6N 135.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 07/1200Z 24.1N 137.0W 20 KT 25 MPH...POST-TROP/REMNT LOW 36H 08/0000Z 24.5N 138.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 08/1200Z...DISSIPATED $$ Forecaster Roberts
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