Current Conditions: Baltimore, Maryland, 10/21/2021 07:00:02 pm


Mostly Clear


Dew Point
Relative Humidity


Feels Like


Wind (SE)


Air Pressure


Sun Rise

07:22 AM

Sun Set

06:19 PM

Day Length

10:57 Hours


2 min 25 sec loss

Moon Rise

07:04 PM

Moon Set

08:12 AM

Next: Last Quarter

Oct 28,2021

Moon Phase

Waning Gibbous

Average Low



Average High
Record Low




Record High
Current Conditions

Thursday June 20 Storm Simulation Update

Severe Weather

Thursday June 20 2019

At noon there has already been a large cluster of heavy rain in southern PA. This was more impressive than the short term models suggested. So, we may be able to extrapolate that for the rest of the day. See the comparison of the mid day radar to the model simulation below.

If you read my morning report, then some of this might be a repeat: We have a risk for severe storms today. Much of this week we have had storms, and yet some areas remained dry. More areas will get in on the action today, and any of those shower or storms that develop can turn severe. These storms will also have the potential produce  flash flooding.

Severe Storm Qualifier:

  • Winds over 58 mph
  • Large hail over 1 inch diameter
  • Isolated Tornado

Potential alerts to be issued:

  • Severe Thunderstorm Watch: A broad area and window with a 4 to 6 hour time frame. This means it MIGHT happen.
  • Severe Thunderstorm Warning: A focused area like a county usually with a 30 to 60 minute time frame. This means it IS HAPPENING NOW.
  • Tornado Warning: A focused area and time frame. This would list towns in a likely path within a 15 to 45 minute window.

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Radar Snapshot At Noon

Notes: The rain in south central Pennsylvania is more impressive than the short range models expected. This will continue to move northeast.

The southern edge of this cluster is where the next round of development will take place. This may be between Frederick and Carroll Counties between noon and 2 PM.


Radar Simulation Timeline  —> slider


Notice the first image at noon underestimated the rain cluster in Southern Pennsylvania.

This forecast is a guide but not perfect. Use this for timing and general location of development. In this case, we will watch the region shown above shifting to between York and Baltimore. That will move to Harford,Cecil, and Kent Counties in Maryland.

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Radar Simulation Timeline —> slider


A residual boundary, perhaps outflow from the earlier storms may linger around Rt 50 between Washington, Annapolis, and the Eastern Shore. More activity is expected to flare up through tonight where this is established.



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