Re: Winter Weather Advisory In Effect For Saturday


Nice detailed info from Fred

Thanks, Bob

On Fri, Jan 17, 2020 at 8:49 PM NU3Q via Groups.Io <> wrote:
Hi Folks:

Please note the weather message below. I will monitor the .09 machine tomorrow and would appreciate other net controllers stepping in to assist.

Please stay safe tomorrow!

Thank you,

73 de NU3Q Bob
Allegheny County EC

Begin forwarded message:

From: Fred Mcmullen - NOAA Federal <fred.mcmullen@...>
Date: January 17, 2020 at 3:23:17 PM EST
To: undisclosed-recipients:;
Subject: Fwd:  Winter Weather Advisory In Effect For Saturday


Our first winter weather event will start tonight, attached is the forecast snowfall, ice accumulation, and onset time.  Most places will turn to rain in the afternoon hours save for north of I80.  If you could give us a snowfall observation by late morning that would be much appreciated.  To report ice, we have that setup on our storm reporting page which can be found here. We need reports during events to help us with our forecast.  If you live north of I80 a snowfall report in the evening and Sunday morning would be helpful as well.  

You can report on the web page above, calling us at 800-242-0510, or reporting via the CoCoRaHS app   

Updated forecast information can be found at

Thanks for your service!
Fred McMullen
Warning Coordination Meteorologist
National Weather Service Pittsburgh
412-262-1591 ext 223
Facebook | /NWSPittsburgh  
Twitter | @NWSPittsburgh

---------- Forwarded message ---------
From: NWS Pittsburgh - NOAA Service Account <nws.pittsburgh@...>
Date: Fri, Jan 17, 2020 at 3:04 PM
Subject: Winter Weather Advisory In Effect For Saturday

Below you will  find an informational weather briefing issued by the National Weather Service in Pittsburgh regarding an upcoming winter weather event. 

What: A winter weather advisory has been issued across our entire region for a wintry mix of precipitation that will occur through the day Saturday.  
Snowfall accumulations: 
Up to 2" is expected across southeast OH, far southwest PA, and the northern panhandle of WV.  
- 1-3" is expected across the rest of southwest PA and the southeast ridges.  
- 3-5" is expected mostly to the north and east of Pittsburgh.

When: Snow will begin across southeast Ohio around 1am Saturday, reaching the rest of the region by 4am Saturday.  

Timing:  Snow will begin shortly after midnight tonight.  It will transition to a wintry mix during the morning hours Saturday before turning over to rain through the afternoon and evening hours. 

Confidence: High confidence in the development of snow and transitions to wintry mix and rain through the day.  Medium confidence on accumulation amounts for each precipitation type.

Best Case Scenario: Warm air is stronger than expected and heats surface quicker, causing a precipitation to change quicker than expected.  This will result in low snowfall and ice accumulations.

Worst Case Scenario: Warm air is slower reaching the surface and is slower to warm the region above freezing.  This will result in more snow accumulation along the I-80 corridor, potentially reaching warning criteria.  Though not warning criteria, more ice accumulation would occur for all locations.

If you have any questions or concerns, please feel free to contact us. 

National Weather Service Pittsburgh, PA
192 Shafer Rd. 
Moon Township, PA 15108
Questions? Call 412-264-5063 or visit our weather briefing page at

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