Weather Tuesday
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Started by metmike - April 30, 2019, 10:15 a.m.

Audios April!   Do something to make somebody feel GREAT 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 month 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...... occurring because of the natural physical laws in our atmosphere.Heaviest rains in the 2 week forecast continue to shift south and south of the Cornbelt-though the Cornbelt is still very wet, the weather is not quite as bullish.


Here are the latest hazards across the country.............including some snow.



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"                                                                                     

                   

 

 





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




  



Low Temperatures Tomorrow Morning

Comments
By metmike - April 30, 2019, 10:17 a.m.
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Balmy up up to the Ohio River Valley! Chilly Upper Midwest/N.Plains!

   

By metmike - April 30, 2019, 10:19 a.m.
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Highs for days 3-7:


Very Warm South and East. Hot in the Southeast!

Cool northern tier.


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 - April 30, 2019, 10:21 a.m.
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Average Temperature anomalies for days 3-7:


Above to Well above average south/east, Below average northern tier.


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 - April 30, 2019, 10:23 a.m.
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Weather maps for days 3-7 below


Fronts between very warm south/east and cool much farther north. 

https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif

By metmike - April 30, 2019, 10:24 a.m.
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Last 24 hour precip top map

Last 7 day precip below that

https://www.wunderground.com/maps/precipitation/daily

By metmike - April 30, 2019, 10:27 a.m.
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Liquid equivalent precip forecasts for the next 7 days are below.


Heaviest rains have continue to shift farther south. ............MO/AR/OK/TX/se-KS heaviest for the 1 week totals.



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 - April 30, 2019, 10:30 a.m.
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Excessive Rainfall Forecasts.

 

  Mesoscale Precipitation Discussions

 


 

Current Day 1 ForecastCurrent Day 1 Excessive Rainfall Forecast
Valid 12Z 04/22/19 - 12Z 04/23/19

 

Day 1 Threat Area in Text Format  


  Day 2 and Day 3 Forecasts 
Current Day 2 ForecastCurrent Day 2 Excessive Rainfall Forecast
Valid 12Z 04/23/19 - 12Z 04/24/19

 

Day 2 Threat Area in Text Format 

 

Current Day 3 ForecastCurrent Day 3 Excessive Rainfall Forecast
By metmike - April 30, 2019, 10:30 a.m.
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Severe Storm risk

                                    

Current Day 1 Outlook
        1630 UTC Day 1 Outlook             
                Forecaster: Thompson/Squitieri
Issued: 20/1624Z
Valid: 20/1630Z - 21/1200Z
Forecast Risk of Severe Storms: No Svr Tstms        
      
          Current Day 2 Outlook
          0600 UTC Day 2 Outlook               
                Forecaster: Broyles
Issued: 20/0546Z
Valid: 21/1200Z - 22/1200Z
Forecast Risk of Severe Storms: Marginal Risk        
      
          Current Day 3 Outlook
          0600 UTC Day 3 Outlook               
                Forecaster: Broyles
Issued: 20/0711Z
Valid: 22/1200Z - 23/1200Z
Forecast Risk of Severe Storms: Marginal Risk
      
          Current Day 4-8 Outlook
          Day 4-8 Convective Outlook       
By metmike - April 30, 2019, 10:45 a.m.
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Current Dew Points

Deep moisture is coming north.


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"      

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


 

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

IT DRIED OUT IN THE CENTRAL BELT BUT IT WILL GET VERY WET THERE THIS WEEK!


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 - April 30, 2019, 10:47 a.m.
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Soilmoisture anomaly:

These maps sometimes take a day to catch up to incorporate the latest data. Still too wet over a large area even with recently drying.........but conditions improved greatly during April and planting made good progress in the Central Cornbelt last week.

It's getting wetter again in many places, heaviest rains now shifting south but planting  stays stalled out in some places not planted yet.


https://www.cpc.ncep.noaa.gov/products/Soilmst_Monitoring/US/Soilmst/Soilmst.shtml#


      Daily Soil Moisture Pecentile       

        Daily Anomaly Soil Moisture (mm)

        Monthly Soil Moisture Changehttps://www.cpc.ncep.noaa.gov/products/analysis_monitoring/regional_monitoring/palmer.gif

By metmike - April 30, 2019, 10:47 a.m.
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Currently, there is 0%  of the Cornbelt/Midwest with drought. There is no place even slightly dry there.

 The market will be keying on precip forecasts for planting concerns for the next month.


https://droughtmonitor.unl.edu/

            Drought Monitor for conus

By metmike - April 30, 2019, 10:52 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 at the end of week 2.

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

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:
Analysis starting from a week ago, ending with today:


Last week+ of analysis, starting with the day farthest in the past. This is an end of week 2 forecast!


Last Monday: Much different picture with the Upper level trough.........on the mean farther west and MUCH less southern stream, especially for individual solutions. Instead of potentially turning much wetter, this solution leans to the dry side.  It's 2 weeks out, so not surprising for changes.

Tuesday: Around half the members look impressive with a southern stream trough in the Southwest with the energy aimed northeast. Several have almost the opposite solution. So it would get very wet............or be dry.............leaning wet.

Wednesday: Stronger northern stream, cooler temperatures, especially northern half. Potential for potent southern stream but where will it be aimed? Looks like a bit farther south today, being diverted by northern stream energy to the north.

Thursday: Battle between southern stream and northern stream. Great uncertainty late in week 2, after a very wet period preceding it. 

Friday: Same northern stream and southern stream battle with a very wet period until we get well into week 2, then great uncertainty.

Saturday: The mean/average map below looks zonal because the average of some opposite extremes cause it to be that way.  Less southern stream on the individual solutions today though and less threat for heavy rains now in week 2 and just afterwards.

Saturday: 12z run at the top here,  looks a bit wetter than the 0z run below.

Sunday: Lots of uncertainty but this mornings mean shows the upper level ridge in the Southeast more prominent for the 2nd solution in a row. IF there is an upper level ridge in that position, the chances of very wet weather in the mid section of the country go way up. That feature will act in tandem with an upper trough upsteam in the Southwest to steer a southern stream aimed at locations between them, along with southerly winds on the backside of the high transporting juicy Gulf air northward.

Monday: Similar to yesterday for the mean/average..............wetter than average but some extreme differences in individual solutions. That wide spread causes uncertainty. 

Tuesday: Doesn't look as wet to me..........with the southern stream and heaviest rains aimed father south today and well south of the Corbelt for the really heavy stuff. 

360h GZ 500 forecast valid on May 15, 2019 00 UTC

GZ 500 forecastGZ 500 forecastGZ 500 forecastGZ 500 forecast

By metmike - April 30, 2019, 10:57 a.m.
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0Z GFS Ensembles at 2 weeks:

Analysis,  starting with the oldest, ending with the most recent:


Last Saturday: Watching to see if more solutions on this model amplify the southern stream similar to the Canadian ensembles. Some show the potential for this.

Sunday: This model does not look that wet at all. In fact, much of the belt is pretty dry and very warm. Most solutions don't have much southern stream.

Monday: Warm and dry under the upper level ridge in the South to points outward still under its protection. Some wetness around the periphery, just out side of that protection.....Upper Midwest/Plains?

Tuesday: Cut off upper level low to deep trough in Southeast Canada will help some cold fronts to push south of the border.  Watching the Southwest US for stronger signal on southern stream.

Wednesday: Battle between northern stream with cool air in the northern US and southern stream with moisture and the threat of excessive rains from the south.

Thursday: Southern stream looks stronger/wetter.

Friday: For sure a very wet period leading up to late week 2, which is the period for these maps. Will it continue?

Saturday:  This model still looks pretty wet late in week 2 on many of the solutions.

Sunday: Majority look  wet. Biggest disparity, especially in the East.

Monday: Looks pretty wet with an upper level ridge in the Southeast and trough in the West with some southern stream..........on many solutions.

Tuesday: Much drier today. Not as many solutions with much southern stream. Almost half of them shut it down completely.

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

By metmike - April 30, 2019, 11:01 a.m.
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Ensemble mean(average of all the individual solutions above)


Last Monday: Pretty decent positive anomaly across the northern half of the US into Southeastern Canada..........so warm temps. Not sure on rains but its NOT an excessive rain set up in the Midwest.

Tuesday: Even bigger positive anomaly NorthCentral US. High confidence for warmth. This would shutdown the moisture to some places................possibly forcing the southern stream to take a track that keeps it from being aimed at the Midwest.

Wednesday: Still big positive anomaly Upper Midwest to Hudson Bay. WARM again! Still dry for alot of the Midwest in this position but could turn wet if it starts shifting eastward.

Thursday: Big positive anomaly centered from the Great Lakes to points southwestward assures warm temps. Much of the area will benefit with dry weather underneath it. 

Friday: Large positive anomaly across the entire country, except the extreme Southwest on the top map.

Saturday: Still a modest positive anomaly across much of the country and warm temperatures but confidence has dropped to very low for late week 2 as a pattern change to much wetter is possible.........but if the main features set up farther west, it will instead be dry.

Sunday: Still the same modest positive upper level/height anomaly across much of the country. This argues for warm temperatures.............though a new negative anomaly in Southeast Canada brings a potential for cold fronts to penetrate in the Upper Midwest to Northeast. Upper level trough off the Southwest Coast needs to be watched for southern stream potential feeding east.

Monday: Modest positive anomaly for upper level heights most places again but the negative anomaly in Southeast Canada is enough to potentially drive down some cooler air on its backside into the Upper Midwest and Northeast.

Tuesday: Negative anomaly in Southeast Canada will push some cool air into the Upper Midwest/Northeast from the northern stream. This could suppress the southern stream farther south...........or, if that is strong enough, the southern stream may send moisture into the cooler air from the northern stream. Upper level ridging in the South will cause it to be warm there. 

Wednesday. Negative anomaly in Southeast Canada will be steering northern stream chilly air south of the border. Positive anomaly center shifted to Southwest Canada helps establish a bit of a couplet, as well as positive anomalies farther north. How much will this suppress the potent/wet southern stream coming from the Southwest upper level trough and potential El Nino energy from the tropical Pacific?

Thursday: Similar to yesterday. Cool air from the northern stream in Northeast and Midwest from the negative anomaly in Southeast Canada but a potent southern stream that doesn't show up well in these anomalies will aim energy/moisture towards the Plains/Midwest.

Friday: Positive anomaly in N/C Canada and negative anomaly in Southeast Canada is a cold couplet dynamic for much of the Midwest and East. How much southern stream moisture pushes into that is not clear late in week 2.  The northern stream could suppress the deeper  moisture pretty far southwest.

Saturday: Anomalies are weaker today. Still the negative one Southeast Canada, so chilly in the Upper Midwest/Northeast. 

Sunday: Strong positive anomaly in the East today that was not there yesterday suggests very wet Plains/Midwest with potent southern stream aimed in that direction. There were a couple of extreme individual solutions that contributed to the positive anomaly though, so the majority don't concur. 

Monday: Positive anomaly in the East not as strong but the negative anomaly in the Southwest is significant for modulating the southern stream which should be aimed toward the Plains/Midwest.

Tuesday: No positive anomaly in the East today, so less ridging there, so the negative anomaly in the Southwest doesn't have the couplet  connection to steer moisture as strongly northward into the Plains/Midwest. Negative anomaly in Southeast Canada should help steer some northern stream chill south of the border.

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


New precipitation product from this site:

https://www.esrl.noaa.gov/psd/map/images/ens/prec_nh_alltimes.html

By metmike - April 30, 2019, 11:03 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.


Monday: NAO dips negative and is a factor in potential cooling in the Upper Midwest/Northeast.

Tuesday: Negative NAO will steer some cooler air into the Northern Tier. Also a negative PNA, so the cool air will not go to far south. 

Wed: Negative NAO will brings cooler northern stream energy/air masses into the Northern tier. How far south can it divert the potent southern stream? The cool air from the north, will probably be overlapped by the moisture coming up from the south in the battle zone between the northern stream and southern stream.

Thursday: Negative NAO and cool along the northern tier. Also a bit of a negative AO and positive PNA can potentially assist in that cooling......during week 2 but tremendous uncertainty late in that period.

Friday: Negative AO and especially negative NAO strongly favor chilly air pushing south out of Canada. PNA increases late in the period that favors that, with potential to shut down the moisture. 

Saturday: AO recovers back to near 0. The pretty negative NAO, bounces back to 0 at the end of 2 weeks. PNA increases a great deal into positive territory at the end of 2 weeks. 

Sunday: AO around 0, NAO rebounds from negative to near 0 at the end of week 2 and PNA turns positive.

Monday: AO now drops below 0. NAO recovers from negative territory to near 0, same with PNA.

Tuesday: AO drops well below 0. NAO recovers from negative to near zero, same with PNA.


https://www.marketforum.com/forum/top

                                    

By metmike - April 30, 2019, 11:04 a.m.
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National Weather Service 6-10 day, 8-14 day outlooks.





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 - April 30, 2019, 11:05 a.m.
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Note now, that the region below with the highest threat for excessive rains is just south/southwest of the main Cornbelt.



https://www.cpc.ncep.noaa.gov/products/predictions/threats/precip_probhazards_d8_14_contours.png