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Tropical Depression LISA Public Advisory Number 21

2016-09-24 22:35:42| National Hurricane Center (Atlantic)

Issued at 500 PM AST SAT SEP 24 2016 000 WTNT33 KNHC 242035 TCPAT3 BULLETIN TROPICAL DEPRESSION LISA ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL132016 500 PM AST SAT SEP 24 2016 ...LISA WEAKENS BACK TO A TROPICAL DEPRESSION... ...EXPECTED TO BECOME A REMNANT LOW TONIGHT... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...25.3N 39.7W ABOUT 1150 MI...1850 KM SW OF THE AZORES ABOUT 1200 MI...1930 KM NW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ At 500 PM AST (2100 UTC), the center of Tropical Depression Lisa was located near latitude 25.3 North, longitude 39.7 West. The depression is moving toward the northwest near 12 mph (19 km/h). A gradual turn toward the north is expected during the next day or two. Maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Gradual weakening is forecast, and Lisa is expected to become a post-tropical cyclone tonight. The estimated minimum central pressure is 1010 mb (29.83 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Cangialosi

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Tropical Storm LISA Graphics

2016-09-24 17:33:35| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Sat, 24 Sep 2016 14:38:05 GMT Wind Speed Probabilities last updated Sat, 24 Sep 2016 15:27:13 GMT

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Tropical Storm LISA Forecast Discussion Number 20

2016-09-24 16:37:37| National Hurricane Center (Atlantic)

Issued at 1100 AM AST SAT SEP 24 2016 000 WTNT43 KNHC 241437 TCDAT3 TROPICAL STORM LISA DISCUSSION NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL132016 1100 AM AST SAT SEP 24 2016 The convective burst that occurred overnight has separated from the low-level center of Lisa and is now nearly dissipated. This leaves Lisa as a tight swirl of low-level clouds once again. An ASCAT-B pass around 1200 UTC indicated that maximum winds were close to 40 kt, but given the degradation of the cloud pattern since the pass the initial wind speed is set at 35 kt. This makes Lisa a tropical storm again. Even though Lisa is a little stronger than estimated earlier, the intensity forecast is unchanged from the previous one. Continued strong shear and dry air should cause a gradual decay of the cyclone, and Lisa will likely become a remnant low by tonight. The models are in good agreement in showing the remnant low opening into a trough in 36 to 48 hours before it becomes absorbed by a cold front. Lisa is moving northwestward at 9 kt. A west-northwestward to northwestward motion at about the same speed is expected during the next 24 hours as Lisa remains steered by a high pressure system to its north. A motion more toward the north is forecast to occur on Sunday as the high shifts eastward to near the Azores. Only small adjustments were made to the previous NHC track prediction, and it lies close to a consensus of the GFS and ECMWF models. FORECAST POSITIONS AND MAX WINDS INIT 24/1500Z 24.7N 38.8W 35 KT 40 MPH 12H 25/0000Z 25.7N 40.1W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 25/1200Z 27.4N 41.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 26/0000Z 29.3N 42.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 26/1200Z...DISSIPATED $$ Forecaster Cangialosi

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Summary for Tropical Storm LISA (AT3/AL132016)

2016-09-24 16:35:03| National Hurricane Center (Atlantic)

...LISA RESTRENGTHENS TO A TROPICAL STORM... As of 11:00 AM AST Sat Sep 24 the center of LISA was located near 24.7, -38.8 with movement NW at 10 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 40 mph.

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