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Mid Fall – The Michigan Weather Center
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Mid Fall

It is hard to believe we are already closing in on the halfway point of fall.  After a drier-than-normal September, we are more than making up for it in October.  Yesterday’s total rainfall in Otsego was .90 of an inch bringing us to 5.09 inches for the month.  Our Fall total thus far is 8.07 inches.

We will see brisk northerly winds today which will gust to 25 mph under cloudy skies. Scattered, light showers may move through during the late afternoon and evening hours. A dry, milder stretch can be expected Monday through Wednesday although frost may be likely on Monday night.

This is our last 7 p.m. sunset for the season.  Also, this is the last day the NWS will issue frost and freeze warnings for the state as this is the time of year we would have normal expectations of such an event.

The periods of rainfall the area has seen over the last three days have added up to almost 2 inches in some locations. Take a look at the map and reports for the Wed-Sat time frame:


Forecast

Today
A 10 percent chance of showers after 5 pm. Mostly cloudy, with a high near 54. North northwest wind 6 to 16 mph, with gusts as high as 24 mph.
Tonight
A 30 percent chance of showers, mainly before 11 pm. Mostly cloudy, with a low of around 41. North wind 10 to 14 mph.
Monday
Partly sunny, with a high near 55. North wind 8 to 10 mph.
Monday Night
Mostly clear, with a low around 35. North northwest wind around 6 mph becoming calm after midnight.
Tuesday
Patchy frost before 9 a.m. Otherwise, mostly sunny, with a high near 57. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low of around 40.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
A chance of showers. Mostly cloudy, with a low of around 49.
Thursday
Showers are likely, mainly after 2 p.m. Partly sunny, with a high near 60.
Thursday Night
Showers are likely, mainly before 2 a.m. Mostly cloudy, with a low of around 46.
Friday
Showers likely. Mostly cloudy, with a high near 55.
Friday Night
Showers likely. Mostly cloudy, with a low of around 40.
Saturday
A chance of showers. Partly sunny, with a high near 53.

U.S.A and Global Events for October 15th:

1608: Evangelista Torricelli, the Italian physicist and mathematician who invented the barometer, was born on this day. In 1644, Evangelista Torricelli built the first barometer with mercury.

Oct 15, 1608 Evanelista Torricelli

The portrait above is Evangelista Torricelli by Lorenzo Lippi, circa 1647.

1954: By 11 p.m. on the 15th, Hurricane Hazel had reached and crossed the waters of Lake Ontario, still sporting sustained winds as high as 60 mph. Hazel took direct aim at the heart of Toronto as it roared past at 49 mph. Toronto saw heavy rainfall before Hurricane Hazel on the 14th. The previous storm, in combination with the hurricane, resulted in significant flooding.

Oct 15, 1954 Toronto Flooding

Food waters surrounding a Toronto-area church. The image is courtesy of the Metropolitan Toronto Police Museum.

1984: The Monday Night Football game in Denver, Colorado, was played in a raging blizzard. 15 inches of snow fell with up to 34 inches reported in the nearby mountains. The Air Force Academy canceled classes for the first time in its recorded history. Click HERE for more information from the NWS Office in Louisville, Kentucky.

Oct 15, 1984 Broncos Game

1987: Beginning on the night of October 15th, an unusually strong weather system caused extremely high winds in the United Kingdom. This storm became known as the Great Storm of 1987. It was the worst storm to hit the UK since the Great Storm in 1703. Click HERE for more information from the BBC.


Forecast Discussion

- Cloudy With Light Rain or Drizzle Possible Later Today

Upper troughing continues today with N/NE upper flow over the Great
Lakes and similar low level flow helping generate lake effect rain
showers mainly over the open waters of Lake Michigan. As PVA occurs
with the trough axis moving through from 18z-00z and saturation
develops in the 925mb-600mb layer along with omegas throughout that
layer, some light rain or drizzle may develop just about anywhere
during the afternoon into late evening hours. This will be in
addition to some bands of lake effect showers migrating into the
lakeshore region as surface flow backs N/NW. The greatest coverage
of synoptic light rain/drizzle as well as lake effect showers should
be in the 18z-03z time frame. Amounts will be light overall, from a
few hundredths to a tenth of an inch or so. Cloud coverage is
expected to be high throughout the day, and whatever small breaks
may occur early in the morning will fill in.

- Decreasing Clouds West of US 127 Monday

The trend on Monday will be for decreasing cloud cover for most, but
not all, of the region. Model RH layers show some progressive
drying throughout the column from NW to SE during the day, but for
areas near and east of US 127, low level N/NE flow over Lake
Huron and into the thumb region should keep cloud cover quite
persistent. A sprinkle or light shower could occur in that region
as well. If the NAM is correct with the 925-850mb RH, partial
clearing near and south of I-96 may not occur until the evening
hours. So, the most likely region for some sun will be north of
I-96 and west of US 127 during the day, with the southern extent
of clearing a bit in question at this point but most areas should
turn partly cloudy by late in the day.

-Frost/Freeze Possible Monday Night

As a surface ridge settles into the region on Monday night the
combination of light winds and clear to partly cloudy skies will
promote strong radiational cooling. Chilly overnight lows of 30-35
are expected along with a strong frost risk. However please note
that we are officially ending the issuance of frost and freeze
headlines today (10/15), so do not expect any headlines for this
upcoming potential event.

-Dry/Milder Tuesday and Wednesday

Surface ridge will be overhead on Tuesday then shifting east on
Wednesday. Tuesday looks to offer the best potential for some
sunshine although developing westerly flow could lead to some lake
clouds/sprinkles along the coast.

Clouds increase on Wednesday as southerly flow/warm advection
pattern strengthens in advance of the next approaching system. This
looks to be the warmest day of the week with highs topping 60 before
showers arrive either late in the day or on Wednesday night.

-Showery/Cool Pattern Again Thursday into Next Weekend

Here we go again with another installment of fall-like/unsettled
weather as another impressive upper trough digs into the Great Lakes
Rgn on Thursday and lingers into next weekend.

The best chance of showers (likely) occurs on Thursday and Friday
when the upper trough is firmly entrenched overhead, with lower pops
still lingering Sat/Sun as additional energy drops through the back
side of the longwave trough.

There is now somewhat better agreement in the evolution and mean
position of the longwave trough over the ern CONUS next weekend.
Cold H8 air around -5C is pushed into our area by 12Z Sunday in
brisk northerly flow on the back side of a potential strong New
England cyclone.
newest oldest
Rocky (Rockford)
Rocky (Rockford)

Breaking News….yesterday was yet another below normal temp day! Wow!!

Slim

The official H/L yesterday was 54/45, there was 0.55” of rain fall. There were 15 HDD’s and 3% of possible sunshine. The highest wind gust was 36 MPH out of the NE. For today the average H/L is now down to 61/42 the record high of 85 was set in 1897, 1899 and 1947. The record low of 23 was set in 1944. The record rain fall of 0.90” fell in 1942. There has yet to be any snow fall on the date. Last year the H/L was 52/37 and there was 0.14” of rain fall.
Slim