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Post-Tropical Cyclone One-E Forecast Discussion Number 6
2020-04-26 22:35:34| National Hurricane Center (East Pacific)
Issued at 200 PM PDT Sun Apr 26 2020 000 WTPZ41 KNHC 262035 TCDEP1 Post-Tropical Cyclone One-E Discussion Number 6 NWS National Hurricane Center Miami FL EP012020 200 PM PDT Sun Apr 26 2020 The cyclone has lacked significant organized deep convection for at least 10 hours, and the system is moving into increasingly more stable air and over sub-25C deg C SSTs. Therefore, the depression has been downgraded to a post-tropical remnant low. The initial intensity is 25 kt is based on several 23-25 kt wind vectors located n-e of the low-level center in a 1718 UTC ASCAT-A overpass. Although the system may still produce some sporadic convection late tonight during the convective maximum period, dry and stable air along with strong westerly shear will likely prevent any appreciable convection from persisting over the next day or so. This should cause the remnant low to weaken and then open up into a trough in 36-48 hours. The initial motion remains 305/08 kt. A substantial low- to mid-level ridge to the north of the cyclone is expected to gradually nudge the shallow low toward the west-northwest later this afternoon, followed by a westward motion tonight, with that motion continuing until the system dissipates Monday night. The new NHC track forecast is essentially just an update of the previous advisory track. This is the last advisory issued by the National Hurricane Center on this system. For additional information on the remnant low, 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 26/2100Z 16.2N 119.4W 25 KT 30 MPH...POST-TROPICAL 12H 27/0600Z 16.7N 120.9W 20 KT 25 MPH...POST-TROP/REMNT LOW 24H 27/1800Z 17.1N 122.9W 20 KT 25 MPH...POST-TROP/REMNT LOW 36H 28/0600Z 17.3N 125.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 28/1800Z...DISSIPATED $$ Forecaster Stewart
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