[Ncep.nhc.nco_contacts] HSU Shift Log -- Technical Edition -- Tue Nov 21, 2017

HSU Shift Log nhc.tsbadmin at noaa.gov
Tue Nov 21 18:43:13 UTC 2017

HSU Shift Log for Tue Nov 21 2017 13:43:06 GMT-0500 (EST)

Shift: H

Forecaster: SR Stewart

Technical Issues Summary:

ATCF issues: ATCF got hung up during morning for no apparent reason, and  
became non-functional. Simple reboot of terminals was conducted and ATCF  
functionality resumed.

N-AWIPS issues: None.

AWIPS-2/NCP issues: None.

Other Techincal issues: NHC Hurricane Hotline phone had some slight  
background static early in the shift, but the line was clear by the 17Z  
Medium Range Conference Call.

Miscellaneous issues: Former Genesis A44 developed into a pronounced low  
since 12Z, which included ASCAT-B/-A winds of 40-45 kt in the ern  
semicircle, a small RMW of about 30 nmi, and very tight comma cloud  
signatures in viz, IR, and WV channels. Based on the small, sharp comma  
cloud up to the cirrus level of probably at least 300 mb, it appears that  
the models did not capture this kind of strengthening well at all since  
they have/had only forecast a weak low from the surface to maybe 700 mb.  
This system is located over 21C SSTs and sfc temps are in the low 70's F  
(21C). System appears to possibly be a warm seclusion low, which means it  
could be an STC...but only for about 12 h since the latest models showing  
the system weakening quickly to below gale force by 06Z before system  
reaches Madeira Islands. This info was passed along to the Portuguese Wx  
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