This article focuses on what we are paying attention to in the next 48 to 72 hours. The article also includes weather maps for longer-term U.S. outlooks (up to four weeks) and a six-day World weather outlook which can be very useful for travelers.
First the NWS Short Range Forecast. The afternoon NWS text update can be found here after about 4 p.m. New York time but it is unlikely to have changed very much from the morning update. The images in this article automatically update.
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
Sat Dec 07 2024
Valid 12Z Sat Dec 07 2024 – 12Z Mon Dec 09 2024…Periods of mixed rain and snow linger from the Great Lakes to northern
New England through the weekend……Heavy rain threat emerges across the Deep South late Sunday into
Monday……Unsettled and windy weather spreading across the Pacific Northwest this
weekend will reach into the northern Plains as snow by Monday……Arctic air across the eastern U.S. will give way to above normal
temperatures by Monday…As an arctic high pressure system moderates and retreats across the
eastern portion of the country, unsettled weather will emerge and expand
across the Deep South as well as the Pacific Northwest. Moisture
returning behind the high pressure system today will begin to interact
with an upper-level trough and a coastal front just off the Texas coast.
This will result in expanding areas of light to moderate rain with
embedded thunderstorms across the eastern two-thirds of Texas today. The
entire system will shift northeastward on Sunday before evolving into a
heavy rain threat across the lower Mississippi Valley toward the Tennessee
Valley by late Sunday into early Monday. A couple of inches of rain is
expected in this general vicinity with locally higher amounts through
Monday morning.Meanwhile, periods of mixed rain and snow are expected to linger across
the Great Lakes and into northern New England where a clipper low pressure
system is forecast to track along a nearly stationary arctic front. Up to
a foot of new snow is possible near the Canadian border in these areas.The Pacific Northwest is entering a period of increasingly unsettled
weather as a rather dynamic upper trough arrives from the Pacific.
Low-elevation rain and high-elevation heavy snow can be expected for the
Cascades and northern Idaho as the weekend progresses with windy
conditions. The mountain snow and low-elevation rain will progress
farther inland into the northern Rockies early Sunday as a low pressure
system begins to develop across the northern High Plains into Alberta
Province of Canada. Winter Storm Warnings and Advisories are active
across the northern Rockies through Saturday where several inches of
snowfall and some icing potential will create hazardous travel conditions.
Meanwhile, much of the remainder of the western U.S. will remain dry and
milder than normal as high pressure dominates. By Sunday night into
Monday morning, a low pressure system is forecast to track across the
northern Plains with snow and wind. Mainly light snowfall amounts are
expected for North Dakota into Montana, with high amounts enhanced by
local terrains.Low temperatures in the 20s as far south as the Florida Panhandle this
morning have prompted Freeze Warnings for portions of northern Florida
into Georgia. High temperatures will begin to moderate across the East by
Sunday as anomalously mild temperatures across the central U.S. shift
eastward into the region. Highs should be in the 60s and 70s Sunday across
the Southeast and 50s and 40s across the Mid-Atlantic and Northeast, while
50s and 60s will expand across the northern and central Plains Sunday
afternoon ahead of the developing low pressure system.
To get your local forecast plus active alerts and warnings click HERE and enter your city, state or zip code.
Learn about wave patterns HERE.
Then, looking at the world and of course, the U.S. shows here also. Today we are looking at precipitation.
Please click on “Read More” below to access the full Daily Report issued today.
| Notices: What would you like to learn about? Please provide that to me via the comment section at the end of the article. |
Now more detail on the 48-Hour Forecast (It is a 48 to 72 Hour Forecast actually)
Daily weather maps. The Day 1 map updates twice a day and the Day 2 and 3 maps update only once a day. These maps update automatically. But if that does not happen, you can get updates by clicking HERE
TODAY (or late in the day the evening/overnight map will appear) (Key to surface fronts shown on maps and you will then also be able to insert a city name or zip code and get a local NWS forecast).
TOMORROW
NEXT DAY
We have a new animation of the forecast which shows how things may play out over the next 60 hours. To update click ANIMATION. Doing so will get you to the dashboard. You can then step through the animation or hit LOOP on the upper right of the display. You will have to hit the back arrow ← at the top left on your computer to get back into this article. It is a little more trouble than before but I think NOAA scrapped the animation routine I was using so we have to keep up with “progress”.
The NWS Climate Prediction Center’s: Watches, Warnings, and Advisories plus other information can be found HERE. That takes you to the NWC Severe Weather Site. From there you can select among many categories of information. Remember to hit the back arrow ← at the top left of your screen to return to this article.
ATMOSPHERIC RIVERS
This tells us what is approaching the West Coast. Click HERE to update If I have not gotten around to doing the update. Here is some useful information about Atmospheric Rivers.
Below is the current five-day cumulative forecast of precipitation (Updates can be found HERE)
Ski SnowReports
New Feature – Ski Reports. It is difficult to find reports that auto-update on-screen (and they are very long) but these links will get you to them – If you have additional suggestions make them in the comments section after every Econcurrents Article and we may add those links. We will try to not have too much overlap as that can add to the confusion.
Snow Forecasts. And remember this shows natural snow. Ski resorts also make their own snow.
Day 1
Day 2
Now we look at Intermediate-Term “Outlook” maps for three time periods. Days 6 – 10, Days 8 – 14, and Weeks 3 and 4. An outlook differs from a forecast based on how NOAA uses these terms in that an “outlook” presents information as deviation from normal and the likelihood of these deviations.
Below are the links to obtain updates and additional information. They are particularly useful if you happen to be reading this article significantly later than when it was published. I always try to provide readers with the source of the information in my articles. These links may also be useful for those viewing this article on a cell phone or other small screen.
| Days 6 – 10 (shown in Row 1) | Days 8 – 14 (Shown in Row 2) | Weeks 3 and 4 (Shown in Row 3 but updates only on Fridays) |
| https://www.cpc.ncep.noaa. gov/products/predictions/610day/ | https://www.cpc.ncep .noaa.gov/products/predictions/814day/ | https://www.cpc.ncep.noaa.gov/products/predictions/WK34/ |
Showing the actual maps. They should now update automatically. The Week 3 – 4 Outlook only updates on Fridays. So below is what I call the Intermediate-term outlook. On Fridays, it extends out 28 Days. That declines day by day so on Thursday it only looks out 22 days until the next day when the Week 3 – 4 Outlook is updated and this extends the outlook by one additional week.
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HAZARDS OUTLOOKS
Click here for the latest complete Day 3 -7 Hazards forecast which updates only on weekdays. Once a week probably Monday or Tuesday I will update the images. I provided the link for readers to get daily updates on weekdays. Use your own judgment to decide if you need to update these images. I update almost all the images Friday Night for the weekend edition of this Weather Report. So normally readers do not need to update these images but if the weather is changing quickly you may want to.
Temperature month to date can be found at https://hprcc.unl.edu/products/maps/acis/MonthTDeptUS.png
Precipitation month to date can be found at https://hprcc.unl.edu/products/maps/acis /MonthPNormUS.png
World Forecast [that website is has been intermittent so be patient]
Below are the Day 1 -3 and 4-6 forecasts for temperature and precipitation. Updates and much additional information can be obtained HERE
World Temperature Anomalies
World Accumulated Precipitation
This information is provided by the University of Maine. They draw upon many different sources. There is a lot of information available at the link provided. I have just provided two useful forecasts. There are probably over a hundred different forecasts available from this source.
Worldwide Tropical Forecast (This is a NOAA Product)
This graphic updates on Tuesdays) If it has not been updated, you can get the update by clicking here Readers will only have to do that if they are reading this article much later than the date of it being published.
Information on Tropical Storms can be found HERE. Western Pacific information can be found HERE. Note that unless there is an out-of-season storm the below images will not update until the National Hurricane Center starts their seasonal update of these maps on June 1. I include them simply because there can be an out-of-season event in which case it should show up in these maps.
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| I hope you found this article interesting and useful. |
