Area Forecast Discussion
Issued by NWS Rapid City, SD

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FXUS63 KUNR 220900

Area Forecast Discussion For Western SD and Northeastern WY
National Weather Service Rapid City SD
300 AM MDT Sat Oct 22 2016

.SHORT TERM...(Today Through Sunday Night)
Issued at 257 AM MDT Sat Oct 22 2016

Upper ridging will continue across the wrn to cntrl CONUS. A
shortwave rounding the top of the ridge is now crossing the nrn
Rockies...but will stay north of the CWA this aftn/evng. Surface
high pressure has slid east of the area with return flow developing
across the area the last couple hours. Surface low ahead of the
upper wave will strengthen this morning across ern MT before
crossing the CWA. Winds will become light before switching the NW as
the low passes through. The only exception will be south of the low
across ne WY/sw to scntrl SD with breezy SW/W winds...before the
transition to the NW later in the aftn into the evng. Highs will be
in the upper 60s to around 80...with the warmest spots south of the
low generally across wrn SD south of I90. NW winds will continue
overnight through decreasing as high pressure builds back in. Lows
tonight will be in the 30s to low 40s. Surface high will cross the
region Sunday bringing another quiet weather day. Highs will reach
the mid 50s to mid 60s.

.LONG TERM...(Monday Through Friday)
Issued at 257 AM MDT Sat Oct 22 2016

A broad upper ridge over parts of the western and central CONUS
will bring dry and mild conditions through most of next week. Some
weak energy rotating newd from the mean ern pac trof will flatten
the ridge, and may bring small chances for pcpn on Tuesday. The
upper ridge will then rebuild for the end of the week.


.AVIATION...(For the 06Z TAFS Through 06Z Saturday Night)
Issued At 257 AM MDT Sat Oct 22 2016

VFR conditions will continue through the period.


Issued At 257 AM MDT Sat Oct 22 2016

Dry westerly flow will develop over southern portions of the area
today. Min RH will be low over much of the CWA. The driest
locations are expected to be across parts of northeast
Wyoming...and southwest to south central South Dakota at 15% or
less. Westerly winds of 15 to 25 mph with higher gusts are also
likely there. These conditions will produce critical fire weather
conditions Saturday afternoon. A Red Flag Warning has been

SD...Red Flag Warning from noon today to 6 PM MDT this evening for

WY...Red Flag Warning from noon today to 6 PM MDT this evening for



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