367  
WTPZ44 KNHC 030843  
TCDEP4  
 
POST-TROPICAL CYCLONE LIDIA DISCUSSION NUMBER 19  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP142017  
200 AM PDT SUN SEP 03 2017  
 
LIDIA HAS NOT PRODUCED ANY DEEP CONVECTION FOR THE PAST 12-15  
HOURS, WHICH MEANS IT IS NO LONGER A TROPICAL CYCLONE AND HAS  
DEGENERATED INTO A REMNANT LOW. ITS INITIAL INTENSITY IS ESTIMATED  
TO BE 30 KT BASED ON A DVORAK CI NUMBER OF 2.0 FROM TAFB, BUT  
LIDIA'S WINDS SHOULD GRADUALLY DECREASE AS IT MOVES OVER THE COLD  
WATERS WEST OF BAJA CALIFORNIA. MODEL GUIDANCE INDICATES THAT  
LIDIA'S VORTICITY WILL MERGE WITH OR BECOME ABSORBED BY A  
DEEP-LAYER LOW TO ITS WEST IN THE COMING DAYS, AND THE SURFACE LOW  
IS EXPECTED TO DISSIPATE BY 48 HOURS.  
 
LIDIA'S INITIAL MOTION IS TOWARD THE NORTHWEST, OR 315/7 KT. HIGH  
PRESSURE OVER THE SOUTHWESTERN UNITED STATES SHOULD STEER THE  
REMNANT LOW TOWARD THE WEST-NORTHWEST BEGINNING LATER TODAY, AND  
THIS MOTION SHOULD CONTINUE UNTIL THE CIRCULATION DISSIPATES OFF THE  
COAST OF SOUTHERN CALIFORNIA.  
 
THIS IS THE LAST ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER  
ON LIDIA. 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  
HTTP://WWW.OPC.NCEP.NOAA.GOV/SHTML/NFDHSFEPI.SHTML.  
 
FORECAST POSITIONS AND MAX WINDS  
 
INIT 03/0900Z 29.6N 116.3W 30 KT 35 MPH...POST-TROP/REMNT LOW  
12H 03/1800Z 30.3N 117.6W 25 KT 30 MPH...POST-TROP/REMNT LOW  
24H 04/0600Z 31.2N 119.7W 20 KT 25 MPH...POST-TROP/REMNT LOW  
36H 04/1800Z 32.2N 121.8W 15 KT 15 MPH...POST-TROP/REMNT LOW  
48H 05/0600Z...DISSIPATED  
 

 
FORECASTER BERG  
 
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