962 
fxus64 kshv 201731 aac 
afdshv 


Area forecast discussion...updated 
National Weather Service Shreveport la 
issued by National Weather Service Fort Worth Texas 
1131 am CST Thursday Nov 20 2008 


Aviation... 
18z tafs 
timing of wind shift is greatest challenge for this taf issuance. 
Tyr/lfk/shv/mlu presently with west winds...but will shift to 
northwest/north by middle to late afternoon /20-23z/. Expect north 
to northeast winds around 10 kts overnight. Skies will remain VFR. 


Js/forward 




&& 


Previous discussion... /issued issued by National Weather Service Fort Worth Texas/ 


Update... 
patchy dense fog still lingering in Monroe vicinity but 
conditions should rapidly improve during the next hour. While cold 
front has plowed across areas to our north and west this 
morning...front seems to be hung up across far northern sections 
of the County Warning Area. Will make some adjustments to wind grids and lower sky 
cover through the morning hours. Will not make tweaks to maximum temperature 
grid for now as slower frontal passage should yield afternoon 
temperatures close to current forecast. 


Js/forward 


Discussion... /issued 859 am CST Thursday Nov 20 2008/ 
quick zone update just sent to cancel the dense fog advisory for 
deep East Texas/scntrl Arkansas/all of north la...before our office GOES down for 
the NAS Beta software upgrade. Fog will completely burn off within 
the next hour or so...with approaching cold front expected to plow 
southward into the region late this morning/afternoon. Did beef up sky 
cover to partly cloudy by afternoon with low level moisture 
pooling along the front...which is expected to clear from north to S 
tonight with drier air filtering S in wake of the front. Maximum temperatures 
up across SW Arkansas today may be a little too warm...with strong cold 
advection with the front expected to allow temperatures to drop with the 
frontal passage. 


Will allow our backup office /WFO ftw/ address these concerns in 
a possible later update. We hope to be up and going again by 
midday or so. 


Updates suite of products have been issued...grids will be 
available shortly. 


15 


Aviation... 
dense fog across southeast half of County Warning Area...trapped in 1000 feet saturation 
layer...within a surface-900 mb steep inversion layer. Dense fog 
advisory expiring 15z...patches fog may continue past 1630z. 
Strong cold front slowed down...remaining west and north of County Warning Area. 
North winds behind front may gust to around 25 miles per hour this afternoon. 
Aside from fog...VFR sky clear both sides of front. /Vii/ 


&& 


Preliminary point temps/pops... 
shv 71 35 50 29 54 / 0 0 0 0 0 
mlu 69 34 49 27 53 / 0 0 0 0 0 
deq 63 28 49 24 52 / 0 0 0 0 0 
txk 65 32 49 28 52 / 0 0 0 0 0 
eld 66 30 48 25 52 / 0 0 0 0 0 
tyr 71 34 51 30 55 / 0 0 0 0 0 
ggg 71 34 50 29 54 / 0 0 0 0 0 
lfk 76 37 53 30 57 / 0 0 0 0 0 


&& 


Shv watches/warnings/advisories... 
Arkansas...none. 
La...none. 
OK...none. 
Texas...none. 
&& 


$$