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Tropical Storm Cristina Forecast Discussion Number 17
2020-07-10 22:44:33| National Hurricane Center (East Pacific)
Issued at 1100 AM HST Fri Jul 10 2020 605 WTPZ45 KNHC 102044 TCDEP5 Tropical Storm Cristina Discussion Number 17 NWS National Hurricane Center Miami FL EP052020 Issued by NWS Central Pacific Hurricane Center Honolulu HI 1100 AM HST Fri Jul 10 2020 Satellite images continue to show a degradation of Cristina's appearance, with cloud tops warming and deep convection mainly limited to the southeastern semicircle. The low level center is clearly visible, but its motion is erratic, taking a looping trajectory through the day. The weakening is likely due to the cyclone's passage over cooler waters. Objective and subjective intensity estimates range from 43 kt to 65 kt. For this forecast package, the initial intensity will be kept at 60 kt based on a blend of the available estimates. The initial motion of Cristina is 285/15 kt. The synoptic scale guidance indicates that a mid-level ridge over the southwestern U.S. will strengthen over the next couple of days. As the ridge strengthens, Cristina is expected to gradually turn west. The objective aids remain relatively tightly packed. The forecast has been adjusted slightly north of the previous forecast and is close to the HCCA guidance. It appears Cristina's opportunity to become a hurricane has passed as the cyclone moves over cooler waters. The objective aids indicate weakening over the next several days due to the cooler sea surface temperatures and a drier, more stable air mass along the forecast track. Cristina is forecast to become a remnant low by 72 hours, though some of the models indicate this process may take a little longer. FORECAST POSITIONS AND MAX WINDS INIT 10/2100Z 19.8N 115.5W 60 KT 70 MPH 12H 11/0600Z 20.1N 117.4W 55 KT 65 MPH 24H 11/1800Z 20.5N 120.1W 50 KT 60 MPH 36H 12/0600Z 20.9N 122.8W 45 KT 50 MPH 48H 12/1800Z 21.2N 125.3W 40 KT 45 MPH 60H 13/0600Z 21.6N 127.8W 35 KT 40 MPH 72H 13/1800Z 21.9N 130.2W 30 KT 35 MPH...POST-TROP/REMNT LOW 96H 14/1800Z 23.0N 135.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 15/1800Z 23.5N 140.5W 25 KT 30 MPH...POST-TROP/REMNT LOW $$ Forecaster Kodama
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