070
FXUS63 KMPX 271937
AFDMPX

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
237 PM CDT Mon May 27 2024

.KEY MESSAGES...

- Scattered showers and thunderstorms are producing small hail
  and frequent lightning this afternoon across central and
  southern MN. Brief funnel clouds have been reported at times
  as well.

- Things become fairly quiet with seasonable temperatures and
  the next chance for widespread rain arriving near the end of
  the week.

&&

.DISCUSSION...
Issued at 229 PM CDT Mon May 27 2024

A broken line of thunderstorms has tracked through portions of south-
central Minnesota already this afternoon, resulting in multiple
reports of half-inch or smaller hail. A broader area of scattered
showers/storms encompasses much of central and southern Minnesota
behind the aforementioned line. Hail and lightning with these cells
are much more sporadic and limited compared to the broken line. This
whole smattering of storms will continue to move southeastward this
afternoon in tandem with the exiting surface low pressure system.
Brief funnel clouds, and a weak landspout or two, are possible with
these storms, especially along the boundary associated with the
occluded low. SPC`s mesoscale analysis page highlights increasing
values of the non-supercell tornado parameter, pushing above 6 for
areas near the MN/SoDak/NoDak border. Any severe potential should
diminish early this evening, and scattered showers/storms will
gradually taper off into tonight.

A secondary, and more disorganized shortwave will eject down over
the Great Lakes region tomorrow, bringing a chance (30-50%) of rain
for areas along and east of I-35. Storm total QPF will be light and
while a rumble or two of thunder is not out of the question,
anything severe is unlikely.

Surface high pressure will move in Wednesday morning, resulting in a
a couple of nice days with mostly sunny skies and light winds.
Temperatures are expected to generally trend upwards for the near
future, with persistent highs in the 80s possible by the start of
next week. Lows will also be trending up after Tuesday night, with
low 60s possible heading into early next week.

Nearing the end of this week, a broad upper-level trough
pattern will slide eastward from the Pacific NW bringing off-
and-on chances for showers/storms through the weekend. Any
severe threat looks to stay further west, or is too low for
predictability at this time. Long-term models generally show a
large positive 500hPa height anomaly building over the western
half of the CONUS by early next week, supporting the idea of a
general upward trend in temps and a potentially less active
period of weather ahead.

&&

.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 105 PM CDT Mon May 27 2024

Scattered thunderstorms have developed quickly during the last
hour or two across MN. They will become more numerous into the
mid afternoon with some MVFR conditions and gusty winds
accompanying them. TS activity will diminish near sunset.
Another chance of showers will arrive late tonight and linger
into much of Tuesday across WI. MVFR cigs appear likely tomorrow
morning, possibly lingering into the afternoon.

KMSP...TS chances increase after 19Z, then prevail through the
early evening. They may persist a bit after the current TEMPO
indicates and we may need to extend it with later amendments.

/OUTLOOK FOR KMSP/
WED...VFR. Wind NE 5-10 kts becoming SE.
THU...VFR. Wind SE 10-15 kts.
FRI...Mainly VFR. Chance -SHRA/MVFR. Wind S 10-15 kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

$$

DISCUSSION...BED
AVIATION...Borghoff