Weather Saturday
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Started by metmike - Jan. 5, 2019, 9:06 a.m.

354 days until Christmas 2019(-:   Just another day?  Do something special for somebody today. Seriously, don't just think about it for a it now.

 Scroll down and  enjoy the latest comprehensive weather to the max.  Mild weather pattern continues for a bit longer.

Here are the latest hazards across the country.

Purple/Pink/blue on land is cold/Winter weather. Brown is wind,  Green is flooding. Gray is fog.  Reddish is a red flag advisory.  

Go to the link below, then hit the location/county on the map for details.

                  Go to "hazards"                                                                                     


Winter Weather

Image result for image of snowflakes

Snowfall the next 3 days:



Low Temperatures Tomorrow Morning

By metmike - Jan. 5, 2019, 9:07 a.m.
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High Temperatures today and tomorrow.

Remaining MILD for this time of year-early January.



By metmike - Jan. 5, 2019, 9:09 a.m.
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Highs for days 3-7:

Very Mild to start next week...........then a bit colder, especially northern tier but not bad by January standards.

By metmike - Jan. 5, 2019, 9:10 a.m.
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How do these days 3-7 temperatures compare to average at this time of year?

Above to much above average most places but cooling.

By metmike - Jan. 5, 2019, 9:12 a.m.
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Weather maps for days 3-7 below:

A couple of cold fronts. Mild Pacific origin air at first but then colder Canadian air.

By metmike - Jan. 5, 2019, 9:14 a.m.
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By metmike - Jan. 5, 2019, 9:15 a.m.
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Current Dew Points

A little moisture along the East coast.

Current Dew Points


Latest radar loop

Doppler Radar National Mosaic Loop


Full resolution version loop (3400x1700 pixels - 2.2mb)


Central Great Lakes sector loop
Go to: Most Recent Image

Precipitation the past 24 hours



You can go to this link to see precipitation totals from recent time periods:

                              Go to precipitation, then scroll down to pick a time frame. Hit states to get the borders to see locations better. Under products, you can hit "observed" or "Percent of normal"      


     Soil moisture anomaly:

Still  wet on this particular metric in an enormous area.


Precipitation compared to average for the last 7, 14, 30 and 60 days. 

Usually not updated for previous day until late the next day.

By metmike - Jan. 5, 2019, 9:19 a.m.
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The top map is the Canadian ensemble average, the maps below are the individual members that make up the average

End of week 2....................0Z ensembles from SATURDAY:
Friday: Pretty cold Midwest/East but not as cold as the previous run. Ridge West/Trough East couplet. Several members allow the polar vortex to shift far enough south for frigid air to settle in.

Very uncertain..........the European ensembles are not this cold and the Canadian ensembles have bee too cold for the last month.

Saturday/Today: Similar to yesterday but not quite as cold or as much cross polar flow.


Each member is like the parent, Canadian model operational model.......with a slight tweek/variation in parameters. Since we know the equations to represent the physics of the atmosphere in the models are not perfect, its useful to vary some of the equations that are uncertain(can make a difference) to see if it effects the outcome and how.

The average of all these variations(ensembles) often yields a better tool for forecasting. It's always more consistent. The individual operational model, like each individual ensemble member can vary greatly from run to run.........and represent an extreme end of the spectrum at times. The ensemble average of all the members, because it averages the extremes.............from opposite ends of the spectrum.........changes much less from run to run.

360h GZ 500 forecast valid on Jan 20, 2019 00 UTC

GZ 500 forecastGZ 500 forecastGZ 500 forecastGZ 500 forecast

By metmike - Jan. 5, 2019, 9:22 a.m.
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0Z GFS Ensembles

Friday: Huge disparity between cold and mild, wet/snow and dry.

Best agreement is for above precip in the East. 

Saturday: Cold focused on the Northeast. Still the Ridge west, trough Northeast couplet.

By metmike - Jan. 5, 2019, 9:24 a.m.
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Latest, updated graph/forecast for AO and NAO here, including an explanation of how to interpret them. 

Friday: AO is negative with some members very negative.....huge disparity/uncertainty.  This favors frigid air moving from high latitudes to mid latitudes. NAO and PNA are close to zero.

Saturday: AO strongly negative as week 2 goes on, favors cold. NAO leaning slightly negative, PNA slightly positive favor cold in the Northeast(Midwest)

The link below, now has the PNA index added at the bottom:

By metmike - Jan. 5, 2019, 9:25 a.m.
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National Weather Service 6-10 day, 8-14 day outlooks.

Not as cold as Friday/yesterday!!!!

Temperature Probability

6 to 10 Day Outlook - Temperature Probability
 Precipitation Probability

  6 to 10 Day Outlook - Precipitation Probability


the 8-14 day outlooks
ArchivesAnalogsLines-Only FormatGIS Data

Temperature Probability

8 to 14 Day Outlook - Temperature Probability
8 to 14 Day Outlook - Precipitation Probability
By metmike - Jan. 5, 2019, 9:27 a.m.
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Previous Posts      

         By metmike - Jan. 4, 2019, 1:06 p.m.            

            The new European model 30 day outlook came out yesterday.(its updated on Mon and Thu, late afternoons).

Still has some major cold hitting in several waves later this month into early February. It's had this solution for a couple of weeks now and the forecast has busted.

Maps below start on January 16th and continue every 24 hours thru Feb. 3rd.




                Re: Weather Friday            


                By WxFollower - Jan. 4, 2019, 8:27 p.m.            



 Welcome back! Did you happen to notice how much the US has cooled on the GFS for the period 1/9-15 just since yesterday’s 12Z run? It has been impressive and likely a big reason NG got stronger through the day despite the quite bearish EIA. Check this out as this is a relative rarity:

12Z Thu run: 137 HDD -41 vs norm
0Z Fri run: 144
6Z Fri 165
12z fri 173
18Z Fri 180 +2 vs norm

 I should add that the GFS is warm biased. But it isn’t the warm bias being negated as the big story. All of the models have been getting significantly colder for this period since yesterday. 

  Why do I think this is happening? My guess is the combo of a consensus projected weak MJO phase 8 starting 1/9 (including going into the under 1.0 amp phase 8 favorable for cold (inside circle) through 1/15) and a -2 AO predicted by GEFS.

  The cooling adjustments look like they may not be nearly complete. Let’s see if this period keeps getting even colder in future GFS runs. Come Sun night, this period could even be much colder on the 18Z GFS than it is on today’s 18Z.