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September 4, 1:30 PM Weather Forecast Update

From some scattered rain to nice Labor Day to some Tuesday late hit-or-miss severe storms to eventual late-season heat wave with near/record heat, then BIG CHANGE with lows 40-45.....

Posted: Sep 4, 2021 12:50 PM
Updated: Sep 4, 2021 8:33 PM

Some scattered showers are expected this afternoon-evening.  Isolated t'shower or two is possible. 

Greatest rainfall coverage should be mid-afternoon to early evening then decrease & diminish.

With south-southwest winds 13-25 mph, it will remain cooler & comfortable today with highs struggling to the 70s.

Any scattered rain will taper with time this evening, followed by clearing late with patchy fog & lows 58-64.

Sunday looks good with mostly sunny to partly cloudy skies & highs 80-84 & pretty low humidity (& a west-northwest breeze).

Lows Sunday night, with partly cloudy skies, should run 58-63, followed by mostly sunny skies & highs 81-86 with a west breeze.

As for Tuesday, it will turn humid with strong southwest winds 20-35 mph. & mostly sunny to partly cloudy skies.

Surface cold front will approach.

A few storms are possible along the front in the late afternoon-evening.

Although there may not be very many storms, wind fields at all levels & a narrow tongue of 1500 ML CAPE supports SLIGHT RISK parameters for wind/hail in the area.

Wednesday & Thursday look great with seasonable highs of 77-83 with lows 52-58 & low humidity with lots of sunshine daily.

Friday will turn warmer with 83-88 with sunshine.

Record-tying to breaking heat wave is likely from the Plains to Midwest September 11-17.  90s & 100s are likely.  Kansas may surge to 110.

100 may reach the Dakotas, nearing all-time high temperature records for so late in the year.

Here, we may end up with 6 consecutive days of 90s.  92-99 is expected with heat indices 97-109. 

Combination of evaporating moisture from wet soils in a band southwest of our area & our own dry, drought soils that extend through Iowa & Nebraska to Minnesota means intense heat, but also some surges of substantial dew points in the 70s.

Southwest winds 15-30 mph are expected frequently, so we will dry out rapidly, resulting in expansion of Moderate Drought or D1 conditions (possible upgrade to D2 or Severe Drought).

Note the heat expanding north & northeastward late next weekend:

However, note the BIG CHANGE coming after the intense heat wave.  Note the temperatures on the morning of likely September 19.  Note the 30s in North Dakota to northeastern South Dakota & the 40s to northwestern Illinois while we are in the 70s.

There will likely be a line of storms with severe weather risk the night of September 18-19 here & the next day will feature falling temperatures from 70s in the morning to 60s in the afternoon with a northwest wind 15-30 mph blowing.

A near 70-degree temperature drop is likely in North Dakota from 102 to 35 in 36 hours.

Looks like a lot of heat September 10-16 with a late-season heat wave & near record lots of tropical storms & hurricanes. Florida, the East Coast, Northern New England & the Canadian Maritimes, Bermuda & the Caribbean will all feature substantial risk.

Date, Day Conditions Daily high/morning low

87/58...Sept. 10, Fri. Mostly Sunny, SSW Wind 10-15 mph....Records: 97-1983

91/65...Sept. 11, Sat. Partly Cloudy, Muggy, Heat Index to 94, SSW Wind 10-15 mph......Records: 96-2013

93/70...Sept. 12, Sun. Partly Cloudy, Muggy, Heat Index to 98, SW Wind 10-20 mph.....Records: 98-1897

94/72...Sept. 13, Mon. Partly Cloudy, Muggy, Heat Index to 101, SW Wind 15-25 mph.....Records: 99-1939

94/73...Sept. 14, Tue. Pt. Cldy, Heat Index 102, S Wind 15-30 mph....Records: 99-1939

94/75...Sept. 15, Wed. Partly Cloudy, Heat Index to 102, SW Wind 15-30 mph....Records: 100-1939

95/75....Sept. 16, Thu. Partly Cloudy, Heat Index to 103, SW Wind 15-30 mph....Records: 98-1939

95/75....Sept. 17, Fri.  Partly Cloudy, Heat Index to 103, SW Wind 15-30 mph....Records: 92-1906

94/75....Sept. 18, Sat.  Partly Cloudy, Heat Index to 104, SW Wind 20-35 mph, Storms Possible with SLIGHT RISK Parameters Night of 18-19th.....Records:  95-1983

73F/45...Sept. 19, Falling Temperatures to the 60s, AM Showers, Then Gradual Clearing, NW Wind 15-25 mph.

68/43...Sept. 20, Mon. Partly Cloudy, NW Wind 10-15 mph.

70/43...Sept. 21, Tue. Partly Cloudy, NNE Wind 10-20 mph.

72/44...Sept. 22, Wed. Mostly Sunny, NE Wind 5-15 mph.

73/46...Sept. 23, Thu. Partly Cloudy, SE Wind 10-15 mph.

81/55...Sept. 24, Fri. Mostly Sunny, SW Wind 15-25 mph.

85/65...Sept. 25, Sat. Partly Cloudy, SW Wind 15-25 mph.

86/66...Sept. 26, Sun. Partly Cloudy, Few Storms, SW Wind 15-25 mph.

75/58...Sept. 27, Mon. Partly Cloudy, NE Wind 5-10 mph.

73/46...Sept. 28, Tue. Sunny, E Wind 2-5 mph.

78/47...Sept. 29, Wed. Mostly Sunny, S Wind 10-15 mph.

82/54...Sept 30, Thu. Mostly Sunny, SW Wind 10-20 mph.

83/60...Oct. 1, Fri. Partly Cloudy, SW Wind 10-20 mph.

86/65...Oct. 2, Sat. Partly Cloudy, SW 15-25 mph.

82/66...Oct. 3, Sun. Mostly Cloudy, Some Sct'd Showers/Storms Possible, SSW 10-20 mph.

77/60...Oct. 4, Mon., Becoming Partly Cloudy, W Wind 10-15 mph.

West Lafayette
Partly Cloudy
32° wxIcon
Hi: 38° Lo: 21°
Feels Like: 23°
Kokomo
Partly Cloudy
35° wxIcon
Hi: 36° Lo: 20°
Feels Like: 26°
Rensselaer
Partly Cloudy
32° wxIcon
Hi: 35° Lo: 20°
Feels Like: 24°
Fowler
Partly Cloudy
32° wxIcon
Hi: 36° Lo: 20°
Feels Like: 23°
Williamsport
Partly Cloudy
34° wxIcon
Hi: 38° Lo: 20°
Feels Like: 24°
Crawfordsville
Partly Cloudy
32° wxIcon
Hi: 38° Lo: 20°
Feels Like: 20°
Frankfort
Partly Cloudy
32° wxIcon
Hi: 37° Lo: 20°
Feels Like: 20°
Delphi
Partly Cloudy
32° wxIcon
Hi: 37° Lo: 21°
Feels Like: 23°
Monticello
Partly Cloudy
32° wxIcon
Hi: 37° Lo: 20°
Feels Like: 23°
Logansport
Partly Cloudy
32° wxIcon
Hi: 36° Lo: 20°
Feels Like: 22°
Decreasing clouds this afternoon with slightly warmer temperatures
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