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
Mon Dec 09 2024
Valid 12Z Mon Dec 09 2024 – 12Z Wed Dec 11 2024…Heavy rain threat across the central to eastern Gulf Coast region today
will expand and move up the East Coast late Tuesday into Wednesday
morning……Periods of mixed rain and snow linger across interior New England
through tonight……Snow/blizzard conditions across the northern High Plains will gradually
taper off later today……Strong Santa Ana winds prompting critical fire danger across Southern
California……Well above average temperatures will overspread the central and eastern
U.S. as cold air surges into the western and then central U.S….Increasingly active weather will progress toward the eastern U.S. through
the next couple of days as a weather pattern reversal continues to unfold
across the mainland U.S. One of the ingredients of this pattern change is
manifested by an expanding area of moderate to heavy rain moving through
the Ohio and Tennessee Valleys this morning with embedded thunderstorms
across the Deep South. The associated jet stream aloft will send the rain
rapidly northeastward across the Mid-Atlantic states today, reaching into
southern New England tonight. Temperatures will be cold enough to support
snow across northern New England Monday night into Tuesday morning before
tapering off for the time-being Tuesday afternoon. Meanwhile, an
extensive surge of cold air into the mid-section of the country will
reinvigorate the jet stream across the Deep South on Tuesday, leading to
an expanding area of moderate to locally heavy rain from the Gulf Coast
into the Deep South and interior Southeast. Tuesday night into Wednesday
morning will likely see the rain quickly expanding up the Appalachians and
into the interior section of the Mid-Atlantic, and then up into New
England with some ice possible at the onset. Meanwhile, organized lines
of thunderstorms could form ahead of a potent cold front across the
interior Southeast early on Wednesday along with sharply colder
temperatures and blustery northwesterly winds behind the front.Across the northern High Plains, colder air and gale force winds behind a
low pressure system have prompted winter weather advisories/warnings,
Blizzard Warnings, as well as wind advisories/high wind warnings this
morning. 4-7″ of snow is expected across the northern High Plains.
Meanwhile, strong onshore flow off Lake Superior will further enhance
local snow totals across the Arrowhead of MN range where 9-12″+ totals are
expected.On Tuesday, a more intense surge of cold air will be funneled southward
from Alaska and western Canada into the Plains associated with an
intensifying arctic high pressure system. A ‘Blue Norther’ cold front
will be driving well through the Southern Plains into northern Mexico by
Tuesday night, dropping temperatures into the 30s into southern Texas by
Wednesday morning. Meanwhile, a reinforcing cold front will drop
temperatures below zero degrees over the northern Plains by then. High
temperatures will be about 5-10 degrees below normal across much of the
Rockies, Southwest and eventually into the Plains.Across the western U.S., a cold surge directed through the Great Basin
into the lower Colorado River Valley today will bring very strong Santa
Ana winds into southern California by later today. Given dry/low humidity
conditions already in place, Red Flag Warnings have been issued for the
eastern Transverse and all of the Peninsular Ranges; as well as a Critical
Fire (level 2 of 3) from the Storm Prediction Center. Winds of 35 to 45
mph in the valleys and gusts of 50 to 65 mph in the mountains will help
fan any fires that do develop quickly and may reduce visibility with
blowing smoke and dust adding to travel concerns in the region.
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. |
