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Area Forecast Discussion (AFD)

Issued by New Orleans/Baton Rouge (LIX)

                            
000
FXUS64 KLIX 202053
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
353 PM CDT Fri Sep 20 2019

.DISCUSSION...
Upper level ridge extends for most of the southern CONUS through
the Atlantic with a surface high just off the coast of the eastern
coast around Virginia to Georgia. Drier air moving in from the 
east has lowered PW values to around 1.5 inches for a good portion
of inland Southeast Louisiana and southern Mississippi. As a 
result, heat indices today were lower today and should generally
be less humid through the weekend. Temperatures, on the other 
hand, will likely stay right in the 90s through this weekend and
into next week. The area will continue to be under a weaker ridge
through next week. -BL

&&

.AVIATION...
VFR category conditions will generally prevail at the terminals 
during the TAF forecast period. Isolated to scattered convection 
this afternoon could impact any of the terminals, with KGPT having 
the least chance. The convection should mostly dissipate after 
sunset. Easterly wind flow will prevail especially for taf sites 
near the coast. 18

&&

.MARINE...
Strong easterly winds will affect the coastal waters through the
majority of the weekend. Because of this a Small Craft Advisory 
has been issued for the coastal waters and Small Craft Exercise
Caution for the tidal lakes. One or both may need an extension
with the eastern half of the coastal waters the most likely.
Additionally, due to the easterly flow and high tides some coastal
flooding may be possible for eastern coasts. Currently opted out 
of any coastal flood advisories but that will need to be watched.
After this weekend, winds will subside and high pressure will 
prevail through next week. -BL



&&

DECISION SUPPORT...
DSS code: Blue.
Deployed: None. 
Activation: None. 
Activities: None.
  
Decision Support Services (DSS) Code Legend 
Green  = No weather impacts that require action.
Blue   = Long-fused watch, warning, or advisory in effect or high 
         visibility event; Marginal risk severe or excessive rain.
Yellow = Heightened impacts with short-fused watch, warning or
         advisory issuances; radar support for slight risk severe 
         or excessive rain.
Orange = High Impacts; Enhanced risk severe; nearby tropical events; 
         HazMat or other large episodes.
Red =    Full engagement for Moderate to high risk of severe and/or
         excessive rainfall, or direct tropical threats; Events of 
         National Significance.

&&


.PRELIMINARY POINT TEMPS/POPS...
MCB  68  89  67  91 /  10  20  10  10 
BTR  71  90  71  91 /  20  20  10  10 
ASD  71  89  70  90 /  10  20  10  10 
MSY  77  87  76  90 /  10  20  10  20 
GPT  73  87  72  88 /  10  20  10  10 
PQL  71  89  70  90 /  10  10   0  10 

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...Small Craft Advisory until 7 PM CDT Saturday for GMZ532-536-538-
     550-552-555-557-570-572-575-577.

MS...None.
GM...Small Craft Advisory until 7 PM CDT Saturday for GMZ536-538-550-
     552-555-557-570-572-575-577.

&&

$$