Toledo Weather

Lucas and Wood Counties

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area forecast discussion
national weather service cleveland oh
146 am edt fri jun 26 2026

.what has changed...
confidence in severe weather east of i-71 has increased for this
afternoon, with an spc slight risk expected. the probability for
areawide rainfall and qpf > 1" has increased friday evening into
friday night. confidence is increasing in a significant and long
duration heat wave next week, with heat indices likely near or
exceeding 100 degrees for multiple days.

&&

.key messages...
1) there is a chance for a few strong to severe storms east of i-71
between 3 and 7 pm today.

2) areawide rain expected friday afternoon through friday night.
heavy rain is possible south of us-30.

2) significant heat and humidity builds next week, with heat
indices likely exceeding 100 degrees, especially in northwest
ohio.

&&

.discussion...
key message 1...
an upper-level trough is moving eastward into the
great lakes region (noted on water vapor satellite imagery), with
its attendant surface low into west-central lower michigan.

morning convection still lingers near youngstown area (as of ~18z)
but should exit shortly. this morning`s convection left behind
a slightly worked over environment, but broad southwest flow
should yield quick recovery of the atmosphere. latest
mesoanalysis reveals pooling of low-level moisture and surface
convergence along and in the vicinity of the i-71 corridor,
which is confirmed by a building cumulus field on satellite,
especially the area south of mansfield. this is likely where we
see convective initiation over the next hour or two (by 4 pm).
convection will initially begin as a broken line and shear
vector angled around 45 degree to the forcing mechanism (pre-
frontal trough) may actually favor keeping things
clustered/multicellular initially instead of growing upscale
quickly. we are also seeing additional convection developing
farther west near the i-75 corridor and that may also continue
to develop further.

the combination of strong deep-layer shear and modest instability
expected will favor strong to severe thunderstorms with this cluster
of storms. primary weather hazard will be strong to damaging winds
within the strongest storms, but large hail and a few tornado are
also possible, especially if storm mode can remain a bit more
discrete.

key message 2...
the cold front swings through tonight, stalling just south of
the forecast area tonight. low pressure that develops over the
southern great plains and mid-mississippi valley moves east-
northeast along this boundary and across ohio friday night into
saturday morning. overall trends in synoptic features has
trended just a bit farther north, with this forecast package
increasing the pop and qpf forecast, with a slightly greater
risk of heavy rain and localized flooding for areas south of
us-30. we`ll have to monitor trends in the system because a
further northward trend could yield greater impacts.

key message 3...
an upper-level ridge builds into the eastern conus next week as
ensembles key in on location and strength of this feature. the
594 dam 500mb heights will be centered over the ohio valley, but
500mb heights will actually be most anomalous over lower great
lakes. this will result in significant build up of heat and
humidity through all of next week (at least monday-friday).
there is high confidence in most of the area reaching multiple
days of temperatures > 90 and heat indices > 100, with >50%
chance of temperatures > 95 and heat indices > 105 especially
along and west of i-71 (particularly the toledo-findlay area).

sometimes confidence is a bit lower due to thunderstorm chances
but with the positioning of the upper-level ridge, it`s
becoming less and less likely that storms develop at least
through wednesday.

one thing to point out is that the impacts of heat tend to
increase with duration. heat impacts will likely be at their
great wednesday onward as we see consecutive days of extreme
heat and very little relief overnight (with lows in the low to
mid 70s).

&&

.aviation /06z friday through tuesday/...
the airspace is between low pressure systems this morning with
a system departing to the east into new york and a system that
will impact the area toward the end of the taf period still
developing over the central plains. in the meantime, some
surface ridging will be in place across the region to allow for
18-24 hours of dry weather over the area. this morning, residual
mid-to-high clouds remain over the region. some patchy clearing
in nw pa has allowed for some stratus to form but it appears
unlikely to reach kyng and keri. any breaks during the late
morning hours could allow for some brief mvfr visibility before
sunrise, primarily at the usual problem spots after thursday`s
rainfall, including kyng, kcak, kmfd, and kfdy.

dry air and easterly flow ahead of the incoming low pressure
system will allow for rain to be delayed across the area by
several hours and have pushed back rain mentions in the tafs.
any mvfr with rain should be after 00z and may trend later.
thunder potential appears low and elevated at this time and have
omitted from the tafs for now.

outlook...non-vfr continuing with rain showers on saturday.
non-vfr possible in fog/mist sunday morning.

&&

.marine...
main concern into this evening will be the threat for some stronger
wind gusts associated with thunderstorms. otherwise, generally quiet
marine conditions are expected through the weekend and into early
next week, though we will need to monitor wind trends on saturday as
a low pressure system slides east through the ohio valley. at this
point, not anticipating northeast winds to exceed 15 knots.
following saturday, mainly light east to southeast flow around 10
knots is expected through monday.

&&

.cle watches/warnings/advisories...
oh...none.
pa...none.
marine...none.

&&

$$

discussion...saunders
aviation...sefcovic
marine...kahn

Fulton and Henry Counties

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area forecast discussion
national weather service northern indiana
212 am edt fri jun 26 2026

.key messages...

- rain arrives later this morning from southwest to northeast,
tapering off after sunset. little to no rain expected toward
the southern michigan state line.

- hot and humid next week with highs in the 90s and heat
indicies near 100 as early as monday.

&&

.discussion...
issued at 208 am edt fri jun 26 2026

a warm front creeps north today bringing an increasing chance of
showers, especially along and south of us 30. northward progress
beyond that is limited by preceding 1019mb high pressure over the
upper peninsula. rainfall totals have decreased notably with the
southern track shift an a lack of local upper-level support. most
locations south of us 30 will see about 0.25" to 0.50", with an
opportunity for a few folks south of highway 24 to see 1". rain
arrives late this morning and tapers off from west to east after
sunset.

beyond today`s rain, the primary item of interest is the
incoming heat. today`s warm front drifts east, sandwiched
between eastern great lakes high pressure and a subtropical
southeast us ridge. to the west, a deep trough over the great
basin buckles the jetstream significantly resulting in a 594dm
ridge over the southern mississippi valley. this ridge becomes
centered overhead tuesday and wednesday, perhaps representing
our hottest days of this "heat wave". available guidance
generally keeps this ridge around through the 4th of july
weekend. daily highs in the 90s along with heat indicies in the
triple-digits are nearly a given. amid the hot and humid
environment, unstable conditions invite the possibility of
isolated thunderstorms which will need to be addressed on a
daily basis. when the ridge does break down, we`ll have to
monitor for any ridge-running mcs`.

&&

.aviation /06z tafs through 06z saturday/...
issued at 1229 am edt fri jun 26 2026

inherited tafs were in great shape resulting in minimal updates.
a warm front bisecting the mid-mississippi valley is the focus
point for showers and thunderstorms that will gradually slide
northeast through the period. ksbn appears on track to miss the
rain, but will carry on with the prob30 for at least one more
taf cycle. at kfwa, i did delay the mvfr ceilings until after
the rain has ended; better alignment with latest cross
sections. medium confidence on the 16z start time due to a
fairly dry subcloud layer, yet strong omega may wring out some
showers on time.

&&

.iwx watches/warnings/advisories...
in...none.
oh...none.
mi...none.
marine...none.

&&

$$

discussion...brown
aviation...brown

Monroe and Lenawee Counties

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area forecast discussion
national weather service detroit/pontiac mi
252 am edt fri jun 26 2026

.key messages...

- mostly dry today with low shower chances tonight near the ohio
border.

- temperatures return to near normal this weekend with dry weather.

- very hot and humid conditions are likely next week as heat indices
could exceed 100f, especially tues into the late week period.
potential exists for thunderstorms during this time as well.

&&

.discussion...

shearing pv anomaly continues to peel away from the great lakes this
morning, leaving lower michigan within a cyclonic surface flow
pattern. while synoptic moisture largely exited with the wave, flow
off of lake huron has established a mix of low stratus/fog across
northern and central lower michigan that will slowly spread south
through the early morning hours. cloud trends quickly improve with
daybreak as late june sun angle efficiently mixes boundary layer
moisture with an otherwise dry/stable column aloft. seasonably cool
conditions expected again today with highs in the mid-70s (even
cooler in cloudy spots). cool conditions will be reinforced as cloud
cover redevelops this afternoon from both diurnal cu development and
remnant convective cirrus from whatever perturbations survive this
far east.

remnant baroclinic zone from yesterday`s low is active with
convection this morning, stretching from new england to the southern
plains where another low has developed. plenty of moisture pooling
around this low will advect into the ohio valley tonight, but stalls
just shy of the state line up against the 1020 mb surface high. this
allows just a glancing period of moist isentropic ascent along
deformation axis overnight near the ohio border that could squeeze
out a few showers. that said, do expect mostly virga as a
combination of shallow moisture, weak ascent, and neutral to weakly
stable lapse rates will struggle to produce rates capable of
overcoming the existing dry low levels. column stays much drier
further north, affording quality radiative cooling conditions
especially toward the saginaw valley/thumb regions. this
reintroduces fog potential saturday morning, especially given e-ne
flow off the of saginaw bay/lake huron

generally neutral thermal advection pattern expected this weekend,
with a gradual warming trend back toward normal highs (low 80s) by
sunday. se michigan remains on the north side of the deformation
axis, maintaining a feed of dry synoptic air from ontario to limit
precipitation chances.

major pattern transition then commences late sunday-monday as a deep
upper low moves into the pacific northwest and ridging amplification
intensifies over eastern conus. by monday afternoon, projections are
for 500mb heights to reach ~594 dam over the ohio valley. this sets
the stage for a hot and humid airmass across se michigan with
potential for multiple consecutive days of mid-upper 90s high
temperatures and even higher heat indices from tuesday through the
rest of the work week. a handful of eps/cmce members push highs into
the low 100s, although that is difficult to do in se michigan and
will require limited cloud cover/thunderstorm activity which have
low predictability this far out. nonetheless, heat headline criteria
looks very much in reach for next week across southern lower
michigan.

&&

.marine...

high pressure building into the western lakes and will encompass
most of the region by this morning. the high holds over most of the
area through the weekend but there is a low looking to clip the
southern great lakes friday afternoon and evening. the rain shield
may impact lakes erie and st clair. in the wake of that low, the
high will expand back across the great lakes tonight, bring warmer
and calmer weather along with it for the upcoming weekend.

&&

.prev discussion...
issued at 124 am edt fri jun 26 2026

aviation...

satellite obs show mvfr stratus across northern mi with this lower
cloud gradually expanding over mbs/fnt tonight. a period of ifr cigs
over these sites can`t be ruled out early friday morning given some
observational support over northeastern lower mi. ongoing cold
advection promotes this mvfr cloud continuing to expand south into
the rest of the terminal corridor through the remainder of the
night. the detroit terminals look to reside around the southernmost
fringe so some uncertainty with regard to early morning ceilings.
that said, opted to favor running forecast with mvfr reaching the
terminals near/just before daybreak. patchy fog has been observed
over the thumb tonight, mainly on the edges of stratus. as such,
expect this to stay on the more isolated given forecast stratus
coverage. ceilings gradually lift over the course of the day friday
with scattering possible by evening, especially in the north, if a
passing low over the ohio valley holds south of the state line.

d21/dtw convection... no thunderstorms forecast through friday.

dtw threshold probabilities...

* low for ceiling at or below 5000 ft tonight, moderate early friday
morning.


&&

.dtx watches/warnings/advisories...
mi...none.
lake huron...none.
lake st clair...none.
michigan waters of lake erie...none.
&&

$$

discussion...mv
marine.......drk
aviation.....kdk


you can obtain your latest national weather service forecasts online
at www.weather.gov/detroit.