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Tropical Storm Cristina Forecast Discussion Number 10
2020-07-09 04:33:17| National Hurricane Center (East Pacific)
Issued at 900 PM MDT Wed Jul 08 2020 000 WTPZ45 KNHC 090233 TCDEP5 Tropical Storm Cristina Discussion Number 10 NWS National Hurricane Center Miami FL EP052020 900 PM MDT Wed Jul 08 2020 After the earlier convective hiatus, Cristina is now going through a little bit of a bursting phase with new inner-core convection developing just west of the center, with the latter feature showing up quite nicely in 0139 UTC SSMI/S microwave satellite imagery. The intensity has been increased to 55 kt based on satellite classifications of T3.5/55 kt from TAFB, and 57 kt and 59 kt from UW-CIMSS ADT and SATCON, respectively. Cristina is moving northwestward or 305/11 kt. The strong subtropical ridge to the north and northeast of the tropical cyclone should keep Cristina moving in that general direction tonight, followed by a turn toward the west-northwest at about the same forward speed by Thursday morning. By 96 h and beyond, a rapidly weakening and vertically shallow Cristina should turn westward under the influence of brisk easterly trade wind flow. The latest NHC model guidance remains in strong agreement on this evolving track scenario, and the new track forecast closely follows the tightly packed consensus models, which are a little south of the previous advisory track. Environmental and oceanic conditions are expected to remain conducive for strengthening during the next 36-48 h while Cristina remains over SSTs greater than 26 deg C. By 72 h and beyond, the cyclone will be moving over much cooler water characterized by SSTs near 22C by 96-120h, which is expected to induce steady weakening despite the low vertical wind shear conditions. The new NHC intensity forecast is similar to the previous advisory and the IVCN intensity consensus, with Cristina still expected to become a hurricane by late Thursday or early Friday. FORECAST POSITIONS AND MAX WINDS INIT 09/0300Z 16.4N 108.6W 55 KT 65 MPH 12H 09/1200Z 17.3N 110.0W 60 KT 70 MPH 24H 10/0000Z 18.3N 111.9W 65 KT 75 MPH 36H 10/1200Z 19.2N 114.1W 70 KT 80 MPH 48H 11/0000Z 20.0N 116.7W 70 KT 80 MPH 60H 11/1200Z 20.6N 119.6W 65 KT 75 MPH 72H 12/0000Z 21.0N 122.4W 50 KT 60 MPH 96H 13/0000Z 21.2N 127.8W 35 KT 40 MPH 120H 14/0000Z 21.6N 133.7W 25 KT 30 MPH...POST-TROP/REMNT LOW $$ Forecaster Stewart
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