Issued at 200 AM PDT Thu Oct 15 2020

WTPZ44 KNHC 150831

Post-Tropical Cyclone Norbert Discussion Number 26
NWS National Hurricane Center Miami FL EP192020
200 AM PDT Thu Oct 15 2020

Vertical wind shear, cool waters, and a dry and stable atmosphere
have taken a toll on Norbert. The system has been devoid of deep
convection for more than 12 hours, and therefore it has become a
post-tropical cyclone. The initial wind speed is set at 25 kt,
which is based on a TAFB Dvorak CI number of T1.5. This could
be a little generous as the system has likely continued to spin
down since the previous advisory. The remnant low should continue
to weaken today, and the global models indicate that the low will
open up into a trough of low pressure off the west coast of the
Baja California peninsula by tonight.

The post-tropical cyclone has slowed down and is now moving
north-northwestward at about 6 kt. A slow north-northwestward
motion within the weak low-level steering flow is expected until
dissipation occurs.

This is the last NHC advisory on Norbert. 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


INIT 15/0900Z 26.2N 116.1W 25 KT 30 MPH...POST-TROPICAL
12H 15/1800Z 27.1N 116.3W 20 KT 25 MPH...POST-TROP/REMNT LOW
24H 16/0600Z...DISSIPATED

Forecaster Brown

Source: Post-Tropical Cyclone Norbert Forecast Discussion Number 26