348 
FXUS63 KFSD 070348
AFDFSD

AREA FORECAST DISCUSSION
National Weather Service Sioux Falls SD
1048 PM CDT Mon May 6 2019

.SHORT TERM...(This Evening through Tuesday)
Issued at 350 PM CDT Mon May 6 2019

Scattered rain showers continue moving east this evening. Rainfall 
accumulations will remain light as a dry air near the surface 
continues to evaporate much of the rain as it falls. Locations along 
and south of the Hwy 20 corridor in Nebraska have the best chances 
of seeing the higher amounts of rain, around a quarter inch.

Light northeast winds will continue overnight as the forcing for 
showers wanes. Some clearing of skies in the north brings a slight 
chance for patchy frost formation for a couple hours during the 
early AM hours. Although frost does not look widespread, those with 
sensitive plants still may want to consider bringing them in to be 
safe, especially if north of I-90.

Tuesday will start off dry as the surface high pressure to the 
northeast lingers. Skies become more cloudy throughout the daytime 
hours as moisture continues to ride over the warm front to the 
south. By the afternoon and evening hours, divergent flow aloft will 
cause enough synoptic scale lift for light rain to begin. 

.LONG TERM...(Tuesday Night through Monday)
Issued at 350 PM CDT Mon May 6 2019

Tuesday night through Wednesday will be wet, with light rain 
across the region. The slow-moving longwave trough just to the 
west will continue to provide lift for showers over a 24 to 36 
hour period from Tuesday night into Thursday morning. Wednesday 
itself will be exceptionally cool for this time of year, with 
forecast afternoon high temperatures near record low values. Rain 
will end from northwest to southeast as drier air moves in aloft 
late Wednesday night into Thursday morning. Forecast rain totals 
range from half to one and a half inches, with the higher amounts 
in northwest Iowa.

Drier weather is expected Thursday night through Friday due to a 
strong surface high pressure moving south from Canada. Temperatures 
remain below average for week's end, but will improve to mid 50s to 
mid 60s for highs Thursday and Friday. A shortwave moving through 
northwesterly flow could bring a quick shot of precipitation on 
Saturday, but other than this, the weekend into early next week 
looks fairly dry, with temperatures slowly warming into the upper 
60s by next Monday as northwesterly upper level flow prevails.

&&

.AVIATION...(For the 06Z TAFS through 06Z Tuesday night)
Issued at 1045 PM CDT Mon May 6 2019

Primarily VFR conditions are expected through the TAF period.
Shower activity has largely ended, with midlevel clouds persisting
for much of the night. Another round of scattered showers are 
expected to spread west to east Tuesday afternoon, becoming more 
widespread Tuesday evening. MVFR ceilings begin working back into
the area near the Missouri Valley and south of I-90 late in the 
TAF period.

&&

.FSD WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
IA...NONE.
NE...NONE.
&&

$$

SHORT TERM...VandenBoogart
LONG TERM...VandenBoogart
AVIATION...