Friday Morning Update

Friday, December 27th 2013, 4:27 am
By: Alan Crone

Good morning.  There may be a few locations of patchy freezing fog this morning but the overall coverage and intensity should be much lower compared to yesterday morning.  Surface temps will quickly move above freezing this morning but some patchy fog may be possible along bodies of water and lower elevation areas.  If you see fog this morning it will have the potential to deposit a thin layer or glaze of ice on some surfaces. I think most folks will not experience the patchy fog.   

The remainder of today and tomorrow will be very nice.  We anticipate afternoon highs in the mid-50s today and nearing 60 Saturday with mostly sunny conditions.  Southwest surface winds will increase speeds later this afternoon and more so tomorrow as the next system rapidly approaches the state.   

A strong cold front will rapidly move across northern OK by pre-dawn Sunday bringing another shallow arctic air mass into the state.  The highs Sunday and Monday will remain in the lower 30s with north winds Sunday in the 10 to 22mph range.  The moisture content is expected to remain low but some post frontal precipitation in the form of light drizzle or snow flurries will be possible for a very short time directly behind the boundary.  This will be represented by a 10 to 20% chance on the 7 day planner.  This window for light precip will only be an hour or two directly behind the frontal passage.   

The air mass will modify Tuesday as south winds return and allow afternoon highs to move into the mid or upper 40s, but another significant surge of cold air is possible by Wednesday.  The long range data has been suggesting a major arctic outbreak next week across the Midwest and northeastern portion of the country.  But we don't know the exact trajectory of the air mass.  The GFS indicates some of this cold air will move into our area Wednesday into Thursday while the EURO keeps most it not all of the air to the northeast of the state.  Unfortunately we will not any confidence in this portion of the forecast until Sunday or Monday.  

In summary, we expect sunny and mild conditions this afternoon.  Much colder air arrives Sunday and continues into Monday.

The official high yesterday in Tulsa was 50 recorded at 2:59pm.

The normal daily average high is 47 and the low is 28.

Our daily records include a high of 77 from 1946  and a low of 8 from 1925. 

You'll find me on Facebook and Twitter. 

Thanks for reading the Friday Morning Weather Discussion and blog.  

Have a super great day! 

Alan Crone