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| #983695 (Received by flhurricane at: 10:48 AM 23.Sep.2019) TCDAT5 Tropical Storm Jerry Discussion Number 25 NWS National Hurricane Center Miami FL AL102019 1100 AM AST Mon Sep 23 2019 Strong shear associated with an upper-level trough off the southeast U.S. coast continues to affect Jerry, and the low-level center is exposed to the west-southwest of the main convective mass. Observations from an Air Force Reserve Unit Hurricane Hunter aircraft indicated that the intensity remains near 55 kt. However, if the current sheared state persists, then a weakening trend is likely to commence soon. For now, the official forecast will only show a very slow weakening over the next few days. This prediction is somewhat higher than the intensity model consensus. It should be noted that experience has shown that tropical cyclones at subtropical latitudes tend to be more resilient to shear than those in the deep tropics. Jerry has slowed its forward speed and is now moving north- northwestward at around 6 kt. The storm will continue passing through a break in the subtropical ridge through tonight. On Tuesday, a trough moving off the northeast U.S. coast will cause Jerry to turn northward. Within a couple of days, the trough should steer the tropical cyclone northeastward at a faster forward speed. In days 3-5, Jerry should move east-northeastward to eastward while embedded in the southern portion of the mid-latitude westerlies. The official track forecast is similar to the previous one and close to the model consensus. Key Messages: 1. Tropical-storm-force winds are expected on Bermuda by late Tuesday. Large swells are also expected to affect the coast of Bermuda during the next few days. These swells could cause life-threatening rip currents. See products issued by the Bermuda Weather Service for more information. FORECAST POSITIONS AND MAX WINDS INIT 23/1500Z 28.1N 68.0W 55 KT 65 MPH 12H 24/0000Z 29.2N 68.3W 55 KT 65 MPH 24H 24/1200Z 30.4N 68.4W 50 KT 60 MPH 36H 25/0000Z 31.8N 67.3W 50 KT 60 MPH 48H 25/1200Z 33.3N 65.0W 50 KT 60 MPH 72H 26/1200Z 35.8N 58.5W 45 KT 50 MPH 96H 27/1200Z 37.0N 53.5W 45 KT 50 MPH 120H 28/1200Z 37.0N 48.0W 35 KT 40 MPH $$ Forecaster Pasch |
