Henry, Nebraska Weather Forecast Discussion

102
FXUS65 KCYS 072005
AFDCYS
Area Forecast Discussion
National Weather Service Cheyenne WY
205 PM MDT Sun Sep 7 2025
.KEY MESSAGES...
- Thunderstorms this afternoon will diminish later this evening,
  small hail and gusty winds will be the main threat.
- A lull in shower and thunderstorm activity for Monday, with
  temperature continuing to warm to near 90 in spots across
  eastern Wyoming and the Nebraska panhandle.
- Daily afternoon thunderstorm chances return Tuesday onwards
  with primary threats being wind and hail.
&&
.SHORT TERM /THROUGH MONDAY NIGHT/...
Issued at 145 PM MDT Sun Sep 7 2025
An upper-level shortwave will slide across the CWA providing the
needed lift in the atmosphere along with adequate moisture for
storm initiation that we are currently seeing on radar. These
storms will become more widespread as the afternoon progresses,
developing over Wyoming and spreading into the Nebraska
panhandle. Instability parameters are meager at best, but
enough for small hail along with gusty and erratic winds to be
of some concern, this activity will continue into the evening
hours. SPC earlier had a Marginal Risk (Level 1 of 5) nosing
into the southern Nebraska panhandle, they since removed it to
just south of the border. However, we still can`t rule out some
low end severe storms in this area of Nebraska. Winds are
ramping up across portions of the CWA, expect gusty winds
primarily in to 20-25 MPH range, with a few locations possibly
gusting to 30-35. Temperatures will continue to warm into Monday
as 700MB temperatures will climb into the double digits, expect
highs to top out mid to upper 70s to near 80 west of the I-25
and lower 80s to upper 80s east of I-25 for this afternoon. More
of the same for Monday in terms of temperatures, although
slightly warmer across easter Wyoming and the Nebraska Panhandle
where temperatures may soar to near 90 in a few spots.
Thunderstorm activity decreases for Monday with a more active
pattern leading into the long term.
&&
.LONG TERM /TUESDAY THROUGH SATURDAY/...
Issued at 155 PM MDT Sun Sep 7 2025
Mid-level water vapor shows the next low pressure system of the
coast of California/Oregon now. This system will be responsible for
our overall wet pattern. Cluster analysis show majority of the
ensembles stalling the system as it collides with the ridging
pattern to give us a wet work week. As this system stalls over the
West Coast it will send multiple shortwave disturbances across
Southeast Wyoming and the Nebraska Panhandle. These shortwaves will
develop chances for afternoon and evening precipitation and
thunderstorm development. By Thursday the next wave is progged to
push its way into the Pacific Northwest. This oncoming wave is
expected to make the pattern progressive again and help lift the
previous low pressure system up and over the ridge centered on the
high plains during this time period. As the low pressure system
lifts it will change our flow pattern from southerly to a more
westerly pattern, cutting off some of the moisture advection into
the region. Friday and weekend is expected to be wet and cool as
some arctic air escapes from Canada to give us daily highs in the
70`s and overnight temperatures in the 40`s and 50`s.
&&
.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1111 AM MDT Sun Sep 7 2025
Widespread gusty winds will be of concern for this TAF period
with gusts up to 20-25 kts, highest gusts primarily affecting
terminals west of I-25. Pesky FG that was socked in over KSNY
earlier today has eroded and shouldn`t be an issue for the
remainder of the day. Isolated to scattered showers and
thunderstorms will affect all terminals at differing times
throughout this TAF period, with TS activity possibly producing
small hail and/or gusty/erratic winds.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&
$$
SHORT TERM...RZ
LONG TERM...MM
AVIATION...RZ

NWS CYS Office Area Forecast Discussion