[Tropical] Tropical Cyclone Discussion
EMWIN Server
emwin at nashvilleweather.net
Sat Aug 21 15:45:12 CDT 2021
WTNT42 KNHC 212045
TCDAT2
Remnants Of Grace Discussion Number 34
NWS National Hurricane Center Miami FL AL072021
400 PM CDT Sat Aug 21 2021
The mountainous terrain of Mexico has taken its toll on Grace.
Surface observations and high-resolution visible satellite images
indicate that the system no longer has a definite surface
circulation, and Grace has degenerated into a trough to the
west of Mexico City. Therefore, this is the last advisory on this
system.
Although the surface center has dissipated, the mid-tropospheric
remnants of Grace are expected to continue westward, and to emerge
into the eastern Pacific Ocean by late Sunday. There is high
likelihood that this will lead to the formation of a new tropical
cyclone over that basin by early next week. For additional
information on this possibility, see the eastern North Pacific
Tropical Weather Outlook under AWIPS header MIATWOEP, WMO header
ABPZ20 KNHC and on the web at hurricanes.gov.
Key Messages:
1. Through tonight, lingering heavy rainfall from the remnants of
Grace may result in additional areas of flash and urban flooding,
along with mudslides, over central Mexico.
FORECAST POSITIONS AND MAX WINDS
INIT 21/2100Z 19.6N 100.1W 20 KT 25 MPH...REMNANTS
12H 22/0600Z...DISSIPATED
$$
Forecaster Pasch
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