Scientific Forecaster Discussion

NWS Discussion
			
				

Area forecast discussion 
National Weather Service Goodland Kansas 
117 PM MDT Tuesday may 21 2013 


Short term...(this evening through wednesday) 
issued at 116 PM MDT Tuesday may 21 2013 


Northwest flow will be over the Central Plains tonight and Wednesday 
with a ridge over The Rockies. Surface high pressure will continue 
to build south into the plains tonight and Wednesday. 


Subsidence and lack of moisture support none probability of precipitation for tonight and 
Wednesday as the upper low shifts further east into the Mississippi 
River valley. Winds will gradually become light overnight as the 
atmosphere decouples. Winds will remain light on Wednesday as the 
upper low moves further away and the surface gradient relaxes. 


Min temperatures tonight will cool to the 40s. Maximum temperatures 
Wednesday will rise into the Lower/Middle 70s with a few upper 70s in 
the southern forecast area. 


Long term...(wednesday night through tuesday) 
issued at 110 PM MDT Tuesday may 21 2013 


Wednesday night through Friday...still have a bit of concern for 
some isolated showers/thunderstorms Wednesday night as a weather 
disturbance to the west of the area during the day slides east 
across the forecast area overnight. Nose of low level jet 
strengthens over the area which may provide enough support and 
negate the lack of moisture below 700mb. For now will maintain 
silent probability of precipitation. On Thursday low level moisture increases across the 
area producing a rather cloudy day. No moisture above 700mb and no 
instability to speak of. Middle level lapse rates may be enough to 
produce a few stable showers or maybe some drizzle. Have increased 
probability of precipitation a bit for some rain showers. For Thursday night precipitation 
chances increase quite rapidly after midnight as a weather 
disturbance moves in from the southwest. Current probability of precipitation look good with 
highest chances generally east of the Colorado/Kansas border. As this system 
exits the area during the morning Friday we should see a lull until 
late afternoon when a few thunderstorms are possible across the west 
or southwest portion of the area as moisture moves in from the 
southwest. 


Highs Thursday generally in the 60s with perhaps a few 70s across 
the far east/northeast. Warmer Friday with middle to upper 70s 
east...low to middle 80s west. Lows in the 40s Wednesday night...50s 
Thursday night. 


Friday night-Tuesday...forecast area to remain in southwest flow 
aloft as low pressure remains across the west/northwest and high 
pressure holds across parts of Texas. Will continue with daily 
chances of showers and thunderstorms as monsoonal type pattern sets 
up. Highs through the period in the 80s with lows in the 50s and 
60s. 


&& 


Aviation...(for the 18z tafs through 18z Wednesday afternoon) 
issued at 1101 am MDT Tuesday may 21 2013 


VFR conditions will continue at kgld and kmck for the next 24 
hours. Gusty wind will slowly decrease by early evening with relatively 
light wind overnight as the upper low moves into the Mississippi 
Valley. 




&& 


Gld watches/warnings/advisories... 
Kansas...none. 
Colorado...none. 
NE...none. 
&& 


$$ 


Short term...fs 
long term...99 
aviation...fs