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Post-Tropical Cyclone Juliette Forecast Discussion Number 27
2019-09-07 22:34:56| National Hurricane Center (East Pacific)
Issued at 1100 AM HST Sat Sep 07 2019 000 WTPZ41 KNHC 072034 TCDEP1 Post-Tropical Cyclone Juliette Discussion Number 27 NWS National Hurricane Center Miami FL EP112019 1100 AM HST Sat Sep 07 2019 Juliette has not produced any deep convection for almost 18 hours, and it is therefore being declared a post-tropical cyclone. A recent ASCAT-C pass showed a small area of 30-35 kt winds to the north of the center, and the initial intensity is therefore being set at 35 kt. A gradual spin down of the circulation is expected with Juliette remaining over waters of 24-25C during the next couple of days. After 48 hours, water temperatures do increase a bit to near 26C, but by then incredibly belligerent westerly shear, on the order of 40-50 kt, is expected to be affecting the remnant low. Still, the global models carry a low through the next 5 days, and that is reflected in the official forecast. The initial motion is 280/11 kt. The low should turn on a due west heading for the next 2-3 days, steered by the low-level trade winds. After day 3, the remnant low is expected to interact with a mid- to upper-level low northeast of the Hawaiian Islands, which could cause it to turn northwestward and slow down by day 5. FORECAST POSITIONS AND MAX WINDS INIT 07/2100Z 24.4N 129.5W 35 KT 40 MPH...POST-TROPICAL 12H 08/0600Z 24.4N 131.2W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 08/1800Z 24.4N 133.5W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 09/0600Z 24.4N 135.8W 30 KT 35 MPH...POST-TROP/REMNT LOW 48H 09/1800Z 24.4N 137.7W 30 KT 35 MPH...POST-TROP/REMNT LOW 72H 10/1800Z 24.6N 141.4W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 11/1800Z 26.0N 144.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 12/1800Z 27.5N 146.0W 25 KT 30 MPH...POST-TROP/REMNT LOW $$ Forecaster Berg
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