Halloween Afternoon Update

Headlines

  • Dry Trick-or-Treating; Showers Later
  • Rainy Period Settles In
  • Warming Temperatures
  • Thunderstorms Possible Thursday

This Afternoon – Partly Cloudy – High 50° / Tonight – Mostly Cloudy – Low 40°

Partly cloudy skies are working into the region from the west this afternoon. Temperatures are currently in the upper 40s and may top out around 50° by late afternoon. All looks well this Halloween afternoon!

giphy.com
giphy.com

As you’re out and about trick-or-treating, you can expect temperatures to drop back into the low 40s under mostly cloudy skies. Rain will likely move in around Midnight and settle into the region for the rest of the night. Lows will drop back to around 40°.

HRRR Model Simulated Radar - Valid Today & Tonight- weatherbell.com
HRRR Model Simulated Radar – Valid Today & Tonight- weatherbell.com

Wednesday – Scattered Showers – High 61° / Wed Night – Light Rain – Low 60°

The cause of the overnight rain will be moisture advecting from the south of the area. This southerly flow will remain in place on Wednesday, leading to scattered showers throughout the day. Highs will top out around 61° thanks to that southerly flow.

Hi-Res NAM Model Forecast Surface Temperatures - Valid 5 PM Wednesday - weather.us
Hi-Res NAM Model Forecast Surface Temperatures – Valid 5 PM Wednesday – weather.us

Light rain will remain possible on Wednesday night. Temperatures look to remain steady thanks to strong low-level southerly flow. Temperatures may even tick up a few degrees overnight. Thus, expected low temperatures will be right around 60°.

NAM Model Forecast Low Level Flow - Valid Wednesday Night - College of DuPage
NAM Model Forecast Low Level Flow – Valid Wednesday Night – College of DuPage

Thursday – Isolated Showers – High 70° / Thur Night – Showers and Storms – Low 63°

Only isolated showers are expected Thursday. We should be well established in the warm sector of a low pressure system to the north. This means we’re between the warm front and cold front and in the southerly, warm, moist flow regime. This will lead to high temperatures topping out around 70°!

NAM Model Forecast Surface Conditions - Valid Thursday 1 PM - College of DuPage
NAM Model Forecast Surface Conditions – Valid Thursday 1 PM – College of DuPage

Showers and some thunderstorms may be possible Thursday night. I can’t rule out a couple strong storms at this time, especially between 6 PM and Midnight. Monitor later forecasts for updates on that department. Lows will remain fairly mild before the cold front moves through, dropping only into the low to mid 60s. The cold front should be on our doorstep Friday morning!

WPC Forecast Frontal Positions - Valid Friday AM - NOAA WPC
WPC Forecast Frontal Positions – Valid Friday AM – NOAA WPC

That should wrap up this afternoon forecast update! Be sure to follow @MarshallCoWX on Twitter and “Like” Marshall County Weather on Facebook for the latest Marshall County weather information. Have a great Halloween!

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