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Tropical Storm Cristina Forecast Discussion Number 24
2020-07-12 16:34:24| National Hurricane Center (East Pacific)
Issued at 800 AM PDT Sun Jul 12 2020 000 WTPZ45 KNHC 121434 TCDEP5 Tropical Storm Cristina Discussion Number 24 NWS National Hurricane Center Miami FL EP052020 800 AM PDT Sun Jul 12 2020 Cristina's convective pattern continues to rapidly erode with only a small patch of moderate convection remaining in the northeastern quadrant. Based on overnight scatterometer winds of 39 kt and the significant decrease in convection since that time, it is assumed that additional vortex spindown has occurred over 23 deg C water, and the initial intensity is therefore decreased to 35 kt, which is also supported by a blend of the latest CI-satellite intensity estimates from TAFB and SAB. Cristina is moving westward or 280/11 kt. There are no significant changes to the previous forecast track or rationale. The latest NHC model guidance remains tightly packed about the previous forecast track, with Cristina expected to continue in a general westerly direction until dissipation occurs in 72-96 h over the extreme eastern portion of the Central Pacific basin. Cristina should continue to spin down as the cyclone moves over near 22 deg C SSTs, becoming a remnant low in about 24 hours. It is possible that Cristina could degenerate into an open wave sooner than currently forecast due to the abundance of dry, stable air that the cyclone will be ingesting. The new NHC intensity forecast is similar to the previous advisory and closely follows the IVCN intensity consensus model. FORECAST POSITIONS AND MAX WINDS INIT 12/1500Z 20.7N 124.4W 35 KT 40 MPH 12H 13/0000Z 20.9N 126.2W 30 KT 35 MPH 24H 13/1200Z 21.3N 128.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 14/0000Z 21.9N 131.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 14/1200Z 22.4N 133.8W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 15/0000Z 22.8N 136.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 15/1200Z 23.3N 139.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 96H 16/1200Z...DISSIPATED $$ Forecaster Stewart
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