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Tropical Depression NINE Forecast Discussion Number 12
2015-09-19 10:36:02| National Hurricane Center (Atlantic)
Issued at 500 AM AST SAT SEP 19 2015 000 WTNT44 KNHC 190835 TCDAT4 TROPICAL DEPRESSION NINE DISCUSSION NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092015 500 AM AST SAT SEP 19 2015 Satellite imagery indicates that Tropical Depression Nine is becoming less organized due to the ongoing 30-35 kt southwesterly shear. The convection is weaker in both coverage and intensity than it was 24 hours ago, and the low-level circulation is losing definition. The shear is expected to continue for at least the next 48 hours, and based on this the depression is expected to degenerate to a remnant low pressure area in 24 hours or less. The initial motion is 290/10. The low- to mid-level subtropical ridge north of the cyclone should steer it or its remnants toward the west-northwest until the system dissipates completely in a couple of days. The new forecast track is an update of the previous track. FORECAST POSITIONS AND MAX WINDS INIT 19/0900Z 18.5N 49.4W 25 KT 30 MPH 12H 19/1800Z 18.9N 50.5W 25 KT 30 MPH 24H 20/0600Z 19.5N 52.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 36H 20/1800Z 20.1N 53.6W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 21/0600Z 20.9N 55.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 22/0600Z...DISSIPATED $$ Forecaster Beven
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