Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Shreveport la 
817 PM CDT sun may 19 2013 


Discussion... 
very quiet evening across the four state region at this time. Winds slowly 
decoupling from west to east and with the lake Wind Advisory 
expiration at 8 PM...needed to update to remove the headline from 
the zone package. 


Taking a look at infrared imagery...SC deck across southeast Texas/SW la advancing 
northward quickly this evening. This plus the pressure gradient 
will help to hold temperatures up tonight. Believe the ongoing 
forecast has this well handled as far as min temperatures are concerned. 
Convection across central/NE OK will remain well north of US 
through the night thus...no other changes were necessary for this 
update. 


Update out shortly...13. 


&& 


Aviation... 
another round of MVFR/patchy IFR ceilings/visibilities will be possible 
areawide by around 20/08z...as strong southerly boundary layer flow 
continues. Gradual improvement is expected after sunrise...with most 
sites VFR 20/15-17z...as southerly winds pick up at 10-15 kts with gusts 
as high as 25 kts. A cold front will approach the region late in the 
taf period...bringing the possibility for strong convection mainly north of 
I-30. However...uncertainty with respect to the southern extent of 
convection precludes mention in the tafs at this time. /12/ 


&& 


Preliminary point temps/pops... 
shv 72 89 73 88 69 / 10 10 20 50 50 
mlu 72 89 72 88 69 / 0 10 10 40 40 
deq 68 87 70 82 64 / 20 20 40 60 60 
txk 71 88 72 85 66 / 10 10 30 60 60 
eld 71 89 71 87 67 / 10 10 10 50 60 
tyr 72 90 73 86 70 / 10 10 20 50 60 
ggg 72 90 73 87 69 / 10 10 20 50 60 
lfk 72 90 73 89 71 / 10 10 10 20 30 


&& 


Shv watches/warnings/advisories... 
Arkansas...lake Wind Advisory from 10 am to 7 PM CDT Monday for the 
following zones: arz050-051-059-060-070-071. 


La...Lake Wind Advisory from 10 am to 7 PM CDT Monday for the 
following zones: laz001-002-010-011-017. 


OK...lake Wind Advisory from 10 am to 7 PM CDT Monday for the 
following zones: okz077. 


Texas...Lake Wind Advisory from 10 am to 7 PM CDT Monday for the 
following zones: 
txz096-097-108>112-124>126-136>138-149>153-165>167. 


&& 


$$ 


13/12