Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Austin/San Antonio Texas 
308 PM CDT sun may 19 2013 


Short term (tonight through Monday night)... 
widespread cumulus field across S central Texas/Hill country region 
this afternoon. The cumulus were becoming more agitated across the 
western/northwestern Hill Country along the dry line and will continue 
isolated evening storms across this area. Storm Prediction Center has also brought the 
slight risk area down into the area...so have updated the severe weather potential statement. This 
convection will end with the loss of heating not long after 
sunset. Otherwise little change through Monday night with the dry 
line setting off isolated convection across the western County Warning Area Monday 
afternoon and evening. Continued unseasonably warm and breezy. 


&& 


Long term (tuesday through sunday)... 
best chances for any rain this package continue to be late Tuesday 
into early Wednesday as an upper air trough and a surface cold 
front arrive in central Texas during maximum heating late Tuesday afternoon. 
Isolated-scattered thunderstorms developing over north/central Texas 
Tuesday afternoon and dropping southward across the County Warning Area Tuesday 
evening. Storm Prediction Center continues to have much of the County Warning Area in a slight risk 
area. With upper air support and surface convergence along the 
front/outflow boundaries...this convection should continue well past 
sunset into the overnight hours. Decreasing probability of precipitation on Wednesday...as 
lingering surface boundaries and cool northwesterly flow aloft could result 
in isolated storms during the day. The remainder of the forecast 
for Thursday through Sunday looks unseasonably warm and humid...with 
little chance for any significant convection...so have gone with 
silent 5-10 percent probability of precipitation and warmer than guidance temperatures. 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 73 94 73 94 72 / - - 10 30 40 
Austin Bergstrom international Airport 72 93 72 94 71 / - - 10 30 40 
New Braunfels Muni Airport 71 94 71 95 70 / - - 10 20 40 
Burnet Muni Airport 71 94 71 92 70 / - 10 20 30 40 
del Rio International Airport 76 100 75 99 75 / - 10 20 10 20 
Georgetown Muni Airport 72 93 71 93 71 / - - 10 30 40 
Hondo Muni Airport 73 97 72 97 72 / - - 10 20 30 
San Marcos Muni Airport 73 93 72 94 71 / - - 10 30 40 
La Grange - Fayette regional 75 93 75 93 74 / 10 - 10 20 30 
San Antonio International Airport 73 94 73 94 72 / - - 10 20 30 
Stinson Muni Airport 73 95 73 95 73 / - - 10 20 30 


&& 


Ewx watches/warnings/advisories... 
none. 
&& 


$$ 


Mesoscale/aviation...05 
synoptic/grids...01 
public service/data collection...31