Weather Tuesday
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Started by metmike - March 19, 2019, 10:58 a.m.

Happy March 19th!   Do something to make somebody smile today. Don't just think about it........do it. Then think about it.............and how you just made somebody's world a tiny bit greener. 


Our local chess tournament last Saturday got some great coverage. I'm extraordinarily proud of the kids and also the adults that helped run this event:

https://www.courierpress.com/story/news/local/2019/03/09/spring-chess-tournament-opens-young-minds-new-possibilities/3097513002/

 Scroll down and  enjoy the latest comprehensive weather to the max. Here's the latest weather..... occurring because of the natural physical laws in our atmosphere. Tranquil weather this week!


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.

                          https://www.spc.noaa.gov/  Go to "hazards"                                                                                     

                   


Wind map    Hit this with your cursor: 

US Weather Current Temperatures Map

US Weather Wind Chill Map



      Wind map     Press down on this on the left with your cursor!

Legend

                                        

                          


Current Jet Stream




Winter Weather

https://www.wpc.ncep.noaa.gov/wwd/winter_wx.shtml


Image result for image of snowflakes


Snowfall the next day:


Forecast Hour:  036
Image URL: http://mag.ncep.noaa.gov/data/gfs/06/namer/snodpth_chng/gfs_namer_036_snodpth_chng.gif

   

gfs_namer_036_snodpth_chng.gif

Low Temperatures Tomorrow Morning

Comments
By metmike - March 19, 2019, 11 a.m.
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Near average!

   

By metmike - March 19, 2019, 11:02 a.m.
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Highs for days 3-7:


Not far from average but cooler(quite a bit in some places) than yesterday's forecast at this time. 


http://www.wpc.ncep.noaa.gov/medr/DAY3_MAX_filled.gif

http://www.wpc.ncep.noaa.gov/medr/DAY4_MAX_filled.gifhttp://www.wpc.ncep.noaa.gov/medr/DAY5_MAX_filled.gifhttp://www.wpc.ncep.noaa.gov/medr/DAY6_MAX_filled.gifhttps://www.wpc.ncep.noaa.gov/medr/DAY7_MAX_filled.gif

By metmike - March 19, 2019, 11:03 a.m.
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How do these days 3-7 temperatures compare to average at this time of year?


Close to average. Cooler than yesterday in the East/South.


https://www.wpc.ncep.noaa.gov/medr/medr_mean.shtml


http://www.wpc.ncep.noaa.gov/medr/hpcmaxwbg.gif



https://www.wpc.ncep.noaa.gov/medr/95Bwbg.gif

By metmike - March 19, 2019, 11:08 a.m.
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Weather maps for days 3-7 below


Monday: Tranquil......mild Pacific origin High pressure and a couple of weak cold fronts. Than turning wet/active at the end of this period.

Tuesday: Some northern stream cold is injected into the cold fronts and have dropped the temperatures for this forecast period in the last 24 hours............by quite a bit in some places.  Looks especially wet in the S.Plains and points east to northeast in the late parts of this period.https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif

By metmike - March 19, 2019, 11:11 a.m.
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Liquid equivalent precip forecasts for the next 7 days are below.


A dinky midwest system............then, mostly dry(very much needed to dry saturated soils for early planting)..............tropical Pacific/El Nino energy/moisture starts feeding into the Southwest then to TX and the S.Plains next week..eventually farther north and east.

Turning wet again next week.


Day 1 below:

http://www.wpc.ncep.noaa.gov/qpf/fill_94qwbg.gif?1526306199054

http://www.wpc.ncep.noaa.gov/qpf/fill_94qwbg.gif?1531339983148

Day 2 below:

http://www.wpc.ncep.noaa.gov/qpf/fill_98qwbg.gif?1528293750112


http://www.wpc.ncep.noaa.gov/qpf/fill_98qwbg.gif?1531340045174


Day 3 below

http://www.wpc.ncep.noaa.gov/qpf/fill_99qwbg.gif?1528293842764

http://www.wpc.ncep.noaa.gov/qpf/fill_99qwbg.gif?1531340092706



Days 4-5 below:

http://www.wpc.ncep.noaa.gov/qpf/95ep48iwbg_fill.gif?1526306162

http://www.wpc.ncep.noaa.gov/qpf/95ep48iwbg_fill.gif?1531339379

 Days 6-7 below:

http://www.wpc.ncep.noaa.gov/qpf/97ep48iwbg_fill.gif?1526306162

http://www.wpc.ncep.noaa.gov/qpf/97ep48iwbg_fill.gif?1531339379

7 Day Total precipitation below:

http://www.wpc.ncep.noaa.govcdx /qpf/p168i.gif?1530796126








http://www.wpc.ncep.noaa.gov/qpf/p168i.gif?1530796126

By metmike - March 19, 2019, 11:14 a.m.
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Current Dew Points


Widespread mostly dry air! A bit of moisture collecting in the center with a weak system.
  
Current Dew Points

                                    


Latest radar loop


http://www.nws.noaa.gov/radar_tab.php

Doppler Radar National Mosaic Loop

                          

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

      

Central Great Lakes sector loop
Go to: Most Recent Image

                                  


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


https://water.weather.gov/precip/


                              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"      

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


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

https://www.atmos.illinois.edu/~snodgrss/Ag_Wx.html

http://weather.agribleservices.com/ahps/7_day_percent.png


http://weather.agribleservices.com/ahps/14_day_percent.png

http://weather.agribleservices.com/ahps/30_day_percent.pnghttp://weather.agribleservices.com/ahps/60_day_percent.png

By metmike - March 19, 2019, 11:15 a.m.
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https://www.marketforum.com/forum/topic/25818/


Currently, there is 0%  of the Cornbelt/Midwest with drought. There is no place even slightly dry there or east of the Rockies, other than in TX and coastal SC/GA. 

I am pretty sure that this has never happened since records have been kept. We will be watching for a potential increase in  substantial rains again during the last week of March.


https://droughtmonitor.unl.edu/


Drought Monitor for conus

By metmike - March 19, 2019, 11:21 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

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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.

End of week 2....................0z ensembles from TUESDAY:
Analysis starting from a week ago, ending with today:


Last week+ of analysis, starting with the day farthest in the past:

Friday: The ridge west/trough east(downstream) couplet that was least apparent on the Canadian models shows up better today in Canada, which is where its capable of generating cold air.  However, this is offset by several solutions with an undercutting, milder flow. Today's overnight solution is a bit colder than yesterday's.

Sunday:  Much milder, west to east,  Pacific flow has overwhelmed and is undercutting any northern stream influence. The ridge/west, trough east couplet is barely seen on a small minority. 

Monday: Same much milder, west to east, Pacific flow as yesterday. 

Tuesday: Similar to the last 2 days. Very mild mean. 

Wednesday: The much milder, new pattern featuring mild Pacific flow that spreads from west to east across the country keeps looking impressive.

Thursday: No changes........very mild using updated 12z model run.

Friday: Still very mild but the southern stream(El Nino?) looks like its going to become more active and turn wet again after a week+ of dry weather.  Upper level trough seen from the Southwest to S.Plains area.

Saturday: Less uniform solutions with more uncertainty with regards to temperatures and precip. Most solutions have a very amplified upper level low/trough, mostly from southern stream origins with the tropical Pacific/El Nino in a state to provide contributions. However, the northern stream and flow pattern in Canada is a bit more favorable to deliver some cold into that system. 

Sunday: The southern stream looks VERY amplified this morning. Deep upper level trough in the Southwest in the mean with the individual solutions having varying versions of cut off lows that track in the flow coming out of the tropical Pacific.  Lots of energy and moisture with tropical Pacific/El Nino origins. Not much opportunity for widespread northern stream cold to get pulled in..........especially in the East.

Monday: Not much change from Sunday. The noted feature is the southern stream trough from the Southwest to S.Plains and its potential to cause wet weather to the east. 

Tuesday: A few members trying to invigorate the northern stream which shows up in the mean as sort of a northwest flow in Canada but still not deep enough south to be dominant in the US............where the southern stream will rule. The modest northern stream cold that invades is actually around a week before this late week 2 period.

360h GZ 500 forecast valid on Apr 03, 2019 00 UTC

GZ 500 forecastGZ 500 forecastGZ 500 forecastGZ 500 forecast

By metmike - March 19, 2019, 11:24 a.m.
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0Z GFS Ensembles at 2 weeks:

Analysis,  starting with a week ago:


Last Friday: The 12z solution yesterday amplified the ridge west/trough east feature and this continued early last night on the 0z solutions seen below..........which is much colder than 24 hours ago. The solutions below are are dominated by the Northern Stream , some are very cold in the Midwest/East. However, the 06z run early this morning was not quite as cold.

Sunday:  The trough with any ridge/west, trough east northern stream influence is way up in Central to Northeast Canada, leaving the US in mild Pacific air.

Monday: Similar to yesterday.

Tuesday: Still very mild

Wenesday: Still very mild but with a couple of outliers that want to over amplify a northern stream low/trough and drive it into Southeast Canada from the ridge/west, trough/east couplet in the higher latitudes.

Thursday: Very mild. Pretty uniform agreement.

Friday: Similar to yesterday. Not quite as wet as the Canadian model but wetter than yesterday and turning wetter after the dry period leading up to this. El Nino southern stream could get pretty active.........aimed at S.Plains.

Saturday: Deep upper level trough on all solutions. Ridging in Canada and down stream troughing could provide the set up for some higher latitude cold to drop south.

Sunday: The ridge west/trough east couplet in Canada is gone today..........so chances to turn cold again have plunged from yesterday.  Active southern stream will be steal the show. Very active.

Monday: Still high potential for an active southern stream.

Tuesday:  A few now with northern stream action, especially prior to these late week 2 maps. Southern stream still much more active.

http://mp1.met.psu.edu/~fxg1/ENSHGT_0z/f360.gif

By metmike - March 19, 2019, 11:28 a.m.
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Ensemble mean(average of all the individual solutions above)


Last Sunday: Weak ridging west and troughing in Eastern/Northeastern Canada(where cold will be, just north of Northeast US.

Monday: Far Western North American ridge anomaly is more impressive today, however the down stream trough is in Northeastern Canada as much of the US has positive anomolies, all the way to the East Coast................so the Pacific warmth will likely be widespread. 

Tuesday: Still very mild in the US with Pacific flow, with a ridge/west, trough/east couplet way up in Canada that will be much too far north to bring northern stream flow or cold this far south..........but something to watch.

Wednesday: The big upper level ridge in Western North America builds all the way north........to Siberia but the downstream trough is waaaay to far north for any northern stream derived dynamics to get as far south as the US. This may just represent a seasonal migration northward of the jet stream and position of the main weather features. Mild Pacific flow dominates here. 

Thursday: Ridge west also extends farther east with positive upper level height anomalies into the Plains and eastward.  Very mild Pacific air spreads across the country.

Friday: Similar to Thursday.

Saturday: The upper level ridge anomaly centered by Alaska will have to be watched to see if enough northern stream energy digs southeast to couple with any troughing much farther east. 

Sunday: The upper level ridge anomaly by Alaska has greatly shifted, to a ridge axis that extends southeast across all of Canada to the Northeast US. No chance for northern stream cold to work into the East under that set up. Negative anomolies setting up from the Pacific, aimed towards the S.Plains associated with what will be an active southern stream.

Monday: Upper level anomolies have shifted the past 2 days from ridge/west, trough east to trough/west, ridge east. The means warmer in the East, colder in the West but not northern stream cold. It's also the signature for the potential for widespread precip, depending on where the departures line up.........warm/moist air transported north from the Gulf of Mexico and Pacific energy from the trough aimed towards that moisture.

Tuesday: At this period, the mean shows little threat for very cold air from the northern stream. A new big anomoly center it up in Siberia but without a connection south/southeast(troughing) downstream to feed that cold across Canada into the US. The anomalies in the US, favor wet weather.........like yesterday.

NCEP Ensemble t = 360 hour forecast

NCEP Ensemble t = 360 hour forecast producthttps://www.esrl.noaa.gov/psd/map/images/ens/t850anom_f360_nhbg.gif

By metmike - March 19, 2019, 11:30 a.m.
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Latest, updated graph/forecast for AO and NAO here, including an explanation of how to interpret them. 

Previous analysis, with the latest day at the bottom for late week 2 period.


Last Monday: AO drops faster in week 2, now with numerous solutions solidly negative..........increasing chances for cold in the high latitudes to be transported towards the mid latitudes during the 2nd part of March. However, the very wide spread indicated uncertainty/low confidence. NAO has increasing spread and uncertainty on both sides of zero. PNA too but the trend for the PNA is up and most solutions are now positive at the end of 2 weeks vs previously around zero. This has also elevated the chances for cold to penetrate south vs the last few days using these indices.

Tuesday: AO continues to look more favorable for cold to move from high latitudes to mid latitudes in late March. Going from positive in week 1 and plunging in week 2, to negative by the end. NAO around zero. PNA increasing to positive which enhances the chance of cold penetrating into the US, east of the Rockies. 

Wednesday:  AO only drops to zero now at the end of week 2..............less favorable for frigid air to travel from high to mid latitudes. NAO stays a bit positive............also less favorable for cold. PNA is a bit positive, which still favors cold. None of the indices are very powerful forecast tools right today.

Thursday: AO which is positive, drops but only close to zero. NAO stays a bit positive, PNA also positive.........favorable for a ridge and warmth in the West. Other than that, nothing profound.

Friday: AO goes from positive to near zero. NAO is a tad positive. PNA is enough positive to favor a ridge West.

Sunday: AO stays positive, NAO positive...........NOT favorable for cold to travel from high to mid latitudes. PNA is positive, favorable for warmth/ridging in the West.

Monday: AO positive, NAO positive..........unfavorable to cold to move southward into the US from higher latitudes. PNA does get solidly positive because of the ridging in the West.

Tuesday: Indices today are becoming volatile at the end of week 2. AO positive but drops to near zero at the end of 2 weeks. NAO also falling but still a bit positive. The wide spread means a bit more uncertainty and a slight increase that cold could return at the end of March(but still unlikely). PNA positive but falling. It's getting too late in the heating season for cold to make a big difference.

Wednesday: Positive AO and NAO make cold air intrusions unlikely. Positive PNA means ridging and warmth in the West.

Thursday: Positive AO and NAO still make very cold air intrusions unlikely. Positive PNA because of the ridge in the West..........which expands eastward.

Friday: Positive AO and NAO. Positive PNA is dropping fast late in week 2 as the upper level ridge in the Soutwest breaks down from an El Nino induced Pacific stream?  Mainly to the south.

Saturday: Some noteworthy changes today for the first time in a long while. Both the AO and NAO are not as positive and drop fast towards the end of week 2, with several members actually in negative territory then. Unlike previous days that made very cold air intrusions very unlikely with the indices at those values, today, the door is open for that POSSIBILITY...........just need to be watched. PNA stays positive, a sign of the upper level ridging in the Northwest US to all of W. Canada. Upper level troughing and Tropical Pacific moisture/energy will be a factor farther south.

Sunday: Huge change back to positive AO and NAO, making major cold intrusions unlikely in the East in early April.

Monday: All the indices are positive and suggest the northern stream will not be a major factor. Weather models are pointing to an active southern stream from late March into April. 

Tuesday: The AO and NAO are not nearly as positive as yesterday and just barely above zero at times............a bit more favorable for cold, especially prior to this period. The PNA stays a bit positive.........ridging in northern North America.

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



https://www.marketforum.com/forum/topic/157

By metmike - March 19, 2019, 11:37 a.m.
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National Weather Service 6-10 day, 8-14 day outlooks.


This period will be noted by widespread rains from the southern stream. There will not be much early planting in the US this year as this period extends into early April.  The forecast Tuesday afternoon may also cool down from the previous ones.



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 - March 19, 2019, 11:38 a.m.
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Previous discussions:

                Re: Weather Monday            

                            By WxFollower - March 18, 2019, 1:33 p.m.            

            

 Fwiw the 12Z GFS suite suggests the end of March and start of April could turn out significantly colder than prior runs have shown. Folks even pretty far south might have to delay planting their gardens if the 12Z GFS suite happens to be right though the SE ridge may once again be ready to fool the models and stop the SE progress of this modeled cold period.

                                    +++++++++++++++++++++++++++++++++++


     

                Re: Re: Weather Monday            

            


                By metmike - March 18, 2019, 2:14 p.m.            

            

Agree strongly with your interpretation of the latest 12z GFS/ENS Larry,

The operational model was much colder and the GFS ENS, for an ensemble was a decent amount colder too.


This has popped NG to new highs for the day and also tested last weeks highs but that held so far....big resistance.

If we close above that.........above last weeks highs, then it looks very strong on the price charts.