Wednesday October 30 2019

The weather maps this morning show what this storm already is a big deal. Snow between Denver and Chicago is one thing, but let’s start with these temperatures! Record cold in the northern Rockies demonstrates the pattern change this intense storm will bring. Single Digits and below zero near and north of Denver will not reach us, but it will fuel the storm, strong winds, and possible lightning on Halloween night.

Please scroll down for the timeline including the radar simulation, winds, lightning, and how our temperatures will drop by Friday morning.

Morning Temperatures


Morning Weather



  • Morning Fog on Delmarva
  • Mostly Cloudy and Mild Today
  • Halloween Warming Into The 70s
  • Halloween Winds Gust To 50 mph. Decorations may fly around and costumes could be less tolerable
  • Halloween Rain: Break During The Day, But Strong Squall Line Arrives After Dark!
  • Halloween Lightning After Dark!
  • Friday Morning Windy and Cold 30s


Local Weather Stats:

Wednesday October 30, 2019 in Baltimore

Average High:  63ºF

Record High: 83ºF in 2016

Average  Low: 41ºF

Record Low:  26ºF in 1965

Sunrise: 7:31 AM

Sunset 6:07 PM  

*Daylight = 2:18 shorter than yesterday 

*Bay Water Temperature = 63ºF at Thomas Pt. Light House


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Weather Today

Afternoon Temperatures


Rain Wednesday Evening To Friday Morning

Showers arrive this evening with steady rain tonight into Thursday morning. Expect the rain to break during Halloween day, then a squall line at night. My point for days has been that timing with systems has been faster than models had shown. That will prove itself, but will it be too fast?

The squall line may arrive in Maryland any time after sunset. This will have winds gusting to 50 mph and possible lightning. Trick or Treating will start warm in the 70s, but west of the Bay may need to end early.

Simulation —> slider

[metaslider id=80937]


The Squall Line

My concern is that if this arrives sooner than these models show, it could clip some trick or treating in areas west of the cities. Even before the rain and possible lightning, the winds will be gusting hard.  This will be more widespread and will make some costumes uncomfortable and decorations fly around.


Strong winds average 15 to 25 mph, but will be gusting up to 50 mph ahead of the squall line. This will felt hours ahead of the strongest rain line.

Lighting Forecast Between 8 PM to 11 PM


NAM 3 Km Model Simulation 


Temperature Change






Rainfall Forecast 



Temperature Outlook



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Also See:

NOAA Winter Outlook Leaves Room For More Snow With Mild ‘Seasonal Average’ Temperatures


Many areas inland from the cities should drop into the 30s by tomorrow morning. This could do it.

See the maps for when we normally expect the first frost in this link.


Snowy Winters Following A Hot and Dry September


Baltimore Weather At BWI May Not Be As Hot As Reported

Construction at the airport close to the weather station may be added artificial heat. Click here or the image for the details.



Other  Links:



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