Area Forecast Discussion
Issued by NWS Rapid City, SD

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279
FXUS63 KUNR 200851
AFDUNR

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
251 AM MDT Sat Oct 20 2018

.DISCUSSION...(Today Through Friday)
Issued at 250 AM MDT Sat Oct 20 2018

Rex blocking pattern is persisting across the western CONUS, with
northwest flow aloft over the northern Plains. At the surface, high
pressure will cross the North Dakota this morning, then move into
the upper Midwest this afternoon. Strong return flow will set up
through the day, with winds become southerly across northeast
Wyoming to far western South Dakota. Temps will be warmest across
northeast Wyoming, with highs reaching the mid to upper 60s while
western South Dakota stays in the 50s to low 60s. Warm air advection
will continue tonight into Sunday, with highs tomorrow in the 60s
areawide. A weak cold front will then cross the CWA late Sunday,
bringing slightly cooler, but still mild temperatures through the
upcoming work week. Sunny skies this weekend will persist through
Tuesday. The upper ridge across the western CONUS will gradually
break down toward midweek. Models are showing an upper wave crossing
somewhere over the central to northern Plains, which could result in
some shower development Wednesday. A more active pattern may
develop across the region toward the end of next week.

&&

.AVIATION...(For the 12Z TAFS Through 12Z Sunday Morning)
Issued at 250 AM MDT Sat Oct 20 2018

VFR conditions will continue through the period.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...None.
WY...None.
&&

$$

DISCUSSION...13
AVIATION...MLS



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