Area Forecast Discussion
Issued by NWS Wichita, KS

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FXUS63 KICT 122049
AFDICT

Area Forecast Discussion
National Weather Service Wichita KS
349 PM CDT Tue Mar 12 2024

.KEY MESSAGES...
* Low potential for strong to severe storms Wednesday
  afternoon/evening.

* Elevated fire weather concerns for Wednesday.

* Continued above average temperatures through Wednesday, with a
  cool down commencing by Thursday-Thursday night from the
  north. Near normal temperatures this weekend.

&&

.DISCUSSION...
Issued at 345 PM CDT Tue Mar 12 2024

...Rest of this afternoon...

Early this afternoon, water vapor satellite imagery shows a
shortwave upper trough skating over the central plains. Meanwhile, a
larger, synoptic scale trough is digging into the western CONUS
helping to promote unsettled weather across the Great Basin and
Rocky Mountains. At the surface, a weak low is tracking along the I-
70 corridor, and breezy southwesterly/westerly winds are helping to
mix a diffuse dryline east into southeast Kansas and western
Missouri. For south-central Kansas into the Flint Hills, warm, dry,
and breezy conditions will help to create very high grassland fire
danger for the remainder of the afternoon. Meanwhile, across far
southeast Kansas, a storm or two may develop this afternoon/evening,
but will quickly move east into Missouri. Chances for a storm across
Allen, Neosho, Labette counties are quite low (at or below 15%).

...Conditional Chance for Severe Storms on Wednesday...

The synoptic scale trough will continue to dig into the western
CONUS as an embedded lead shortwave ejects into the south-central
plains on Wednesday. This will set the stage for a conditional
chance of strong to severe storms across much of the area during the
afternoon and evening hours. Short-term models have been not very
helpful to say the least, at least in terms of the exact positioning
of the surface low, warm front, and dryline by Wednesday afternoon.
However, trends in most of the modeling have been slightly further
south and west this morning. As such, the possibility for a strong
to severe storm or two has shifted just a bit further south and west,
and now includes the I-135 corridor and locations to the east as
well as locations along the I-70 corridor.

Capping will be weak along the dryline, and decent diffluence
aloft should help to promote storm development, especially
further north closer to the warm front. However, many of the
CAMs suggest the dryline may be quite diffuse and the quality of
moisture in the warm sector may be poor. The lack of confluence
at the surface and questionable low level moisture will likely
hinder thunderstorm development further south along the dryline.
With that being said, if a storm can develop, it will have a
fairly decent environment to work with. Steep lapse rates will
foster fairly good instability across the warm sector (despite
issues with low-level moisture), with 1500-2000 J/kg MLCAPE.
This along with modest deep layer shear around 35 knots should
favor supercells. Up to quarter-sized hail and 60 mph wind gusts
are the main concerns. Low-level shear will be quite marginal;
however, a tornado cannot be ruled out.

Meanwhile, along the I-70 corridor and into northeast Kansas,
enhanced low-level moisture along the warm front and better
forcing for ascent will likely support a better chance for the
development of showers and storms across these areas. Similar
instability and shear parameter to those in the warm sector
should support an organized storm mode with quarter-sized hail
and 60 mph wind gusts being the main concerns. However, a
tornado cannot be ruled out, especially for any discrete
supercells along the warm front where low-level SRH will be
maximized.

...Thursday through the Beginning of Next Week...

Backed winds Wednesday night into Thursday morning will allow for
moisture to pile up ahead of a slowly advancing cold front. Little
to no capping and decent surface confluence ahead of the front
should be enough for the development of scattered showers and storms
across northeast Oklahoma, far southeast Kansas, and southern
Missouri. While most of the strong to severe storms will likely be
south and east of the CWA, a strong storm with small hail and gusty
winds cannot be ruled out across far southeast Kansas (in and around
the vicinity of Chetopa). The cold front is expected to finally push
through the area Thursday night which will end precipitation chances
through the end of the forecast period across the area. Cooler
conditions are expected through the weekend as the region ends up
underneath a northwesterly flow regime through Monday. Another
system begins to approach the area on Tuesday, and a warming trend
appears probable going into the middle of next week.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1230 PM CDT Tue Mar 12 2024

A weak surface low is moving across the area early this
afternoon which will introduce a wind shift from southerly to
northwesterly across central Kansas (KRSL, KGBD, and KSLN), and
a southerly to southwesterly wind shift across south-central
(KICT and KHUT) and southeast Kansas (KCNU). In general winds
will be sustained around 15-20 knots with gusts up to 25-30
knots at times. A storm or two is possible late this evening
across far eastern Kansas, but storm chances should remain well
east of KCNU.

Moisture return Wednesday morning may introduce MVFR CIGS after
15Z for portions of south-central and southeast Kansas.

&&

.FIRE WEATHER...
Issued at 345 PM CDT Tue Mar 12 2024

Today...

Very high grassland fire danger is expected for the rest of this
afternoon south of US-50 due to warm, dry, and breezy conditions.

Wednesday...

Very high grassland fire danger is possible each afternoon across
south-central Kansas and the Flint Hills on Wednesday. Warm, dry,
and breezy conditions are expected to drive promote fire weather
conditions, especially west of a dryline that will be located
along the I-135 corridor Wednesday afternoon.

&&

.ICT WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION...JC
AVIATION...JC
FIRE WEATHER...JC


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