Kalamazoo, Michigan 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

199
FXUS63 KGRR 022000
AFDGRR

Area Forecast Discussion
National Weather Service Grand Rapids MI
400 PM EDT Wed Apr 2 2025

.KEY MESSAGES...

- Severe Weather Still Possible near I-94

- Rain chances Friday night Saturday

- Cold Shot with Snow Early Next Week

&&

.DISCUSSION...
Issued at 400 PM EDT Wed Apr 2 2025

- Severe Weather Still Possible near I-94

Lack of instability has precluded any severe weather so far this
afternoon and the gravity wave wind threat has also been
underwhelming so far with a few mesonet sites seeing wind
direction changes and gusts 30 knots or less across southern Lower
Michigan.

There is still the chance of a few severe wind gusts and possible
low level mesocyclones with a tornado threat closer to the sfc
warm front across southern Lower Michigan, persisting longest
across the southeast zones this evening. Trends will continue to
be monitored, but at this point the severe threat seems low.

- Rain chances over the weekend

A low across the Southern Plains moves northeast ahead of a
deepening longwave upper trough by Friday with the northern edge
of the precip shield reaching the southeast half of the forecast
area Friday night into Saturday. Colder air filters in across the
north with a mix of snow possible if the precip lingers into
Saturday night and Sunday.

- Cold Shot with Snow Early Next Week

Upper troughing deepens into early next week with a clipper low
tracking across the Great Lakes. The air mass appears cold enough
to allow a coating of Spring snow by Sunday night through Monday
with accums possible for most if not all of Lower Michigan.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 132 PM EDT Wed Apr 2 2025

Local and regional radar continues to show widespread shower/storm
activity across Lower MI. Thunderstorms are generally lined up
from near LAN to St Joe with more upstream over IL. A very strong
LLJ is creating significant LLWS and that`ll continue into the
evening before it moves east. Generally widespread IFR conditions
are expected through 00z or so before rising to MVFR as the warm
front approaches. Cigs/Vsbys will continue to rise after midnight
once the cold front moves through. We`ll see VFR after 12z.

&&

.MARINE...
Issued at 400 PM EDT Wed Apr 2 2025

No changes to the Gale Warning, which expires at 11 pm. A SCA has
been issued to begin at 11 pm and run through Thursday afternoon.
Winds will go onshore tonight so waves will build closer to
shore.

&&

.HYDROLOGY...
Issued at 332 PM EDT Wed Apr 2 2025

In general, 1 to 2 inches of rain has fallen so far today across the
Grand and Kalamazoo basins, with another 0.5 to 1.0 likely before
the rain and storms move out later this evening. A few localized
totals over 3 inches are possible. We`ve seen some minor general
flooding in the far southwest counties including Kalamazoo. These
areal flooding risks will diminish quickly once the rounds of storms
move out.

While the Muskegon River basin did get less rain, water levels were
already starting out higher there due to previous storms, so some
minor flooding is expected over the coming days in Newaygo and also
in Bridgeton. Across the Grand River, it looks like most places will
probably see significant rises but avoid flooding. Exceptions to
this will probably be some of the flooding "trouble spots" including
Comstock Park, around Lansing on the Red Cedar River as well as
Sycamore Creek, and potentially down along the Portage River near
Vicksburg.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...None.
MARINE...Gale Warning until 11 PM EDT this evening for LMZ844>849.
     Small Craft Advisory from 11 PM this evening to 4 PM EDT
     Thursday for LMZ844>849.

&&

$$

DISCUSSION...Ostuno
AVIATION...04
MARINE...Ostuno
HYDROLOGY...AMD