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 outlooks and a six-day World weather outlook which can be very useful for travelers.
We start with the U.S. Information. That is the longest part of the article. Then we have a short section on World Weather and then we address the Tropics. When there are tropical storms that might impact the U.S. we provide more detailed information which updates frequently on those storms.
Please click on “Read More” below to access the full report as I have moved the highlights into the body of the report where it is followed by the Today, Tomorrow and the Next Day maps and a lot more. I will try to feature the most important graphic in the lede paragraph on the home page. But there are often multiple maps that are very important so it is best to read the full article. We now have a snow report and it is possible to get a ten-day NWS forecast for the zip code of your choice.
| Notices: We recently published a review of October weather worldwide and you can access that article HERE. And a review of October weather for the U.S. which you can access HERE. We have now published the NOAA Seasonal Update which you can access HERE. This was followed up with the update of the Mid-December Outlook which you can access HERE. What would you like to learn about? Please provide that to me via the comment section at the end of the article. |
First the highlights from the NWS.
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
Sun Dec 03 2023
Valid 12Z Sun Dec 03 2023 – 12Z Tue Dec 05 2023…A multi-day atmospheric river event will continue to impact the
Northwest and Rockies with heavy rain and significant mountain snowfall
Sunday and into Monday……Unsettled weather is forecast across the eastern third of the country
with rain along the East Coast & wintry weather from parts of the Midwest
and Great Lakes to northern New England……Generally milder than normal temperatures expected for across most of
the Lower 48…
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
This animation shows how things may play out over the next 60 hours. To update click here.
The NWS Climate Prediction Center’s: Watches, Warnings, and Advisories plus other information can be found HERE. We post at least one of those updates daily, sometimes both. The Highlights are shown in the lede paragraph of 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.
Continuation of the NWS Short Range Forecast. It is updated by NWS twice a day and these updates can be found here
A series of atmospheric rivers are forecast to produce heavy rainfall in
the Pacific Northwest into the upcoming week while heavy snow continues in
the Northern Rockies through Sunday. Unlike the past few days in the the
Pacific Northwest when heavy snow was the most impactful precipitation
type, the next storm system accompanying today’s atmospheric river will
track farther north. This will stream milder air into western Oregon and
Washington, forcing rain to be the dominant precipitation type. Rain will
fall heavily at times in areas that now contains fresh snowpack, most
notably in western Oregon. This is a recipe for minor to moderate river
flooding, as well as flash flooding. WPC has issued a Slight Risk for the
Oregon Coast and the Cascade Range in both Oregon and southern Washington.
After a brief break between atmospheric rivers Sunday night, the next
atmospheric river arrives Monday with the heaviest rainfall likely to
occur in western Washington. WPC issued a pair of Slight Risks for the
Olympic Peninsula, northwest Oregon, and the Washington Cascades. Through
Monday night, portions of western Washington and Oregon can expect
anywhere from 3-7″ of additional rainfall with locally higher amounts
possible. Farther inland, the higher terrain of central Idaho, the Tetons
in western Wyoming, the Wasatch in northern Utah, and the Colorado Rockies
have moderate-to-high chances (50-80%) of receiving greater than 12″ of
snowfall. Most of the snowfall is expected to occur on Sunday with lighter
amounts in the northern Rockies on Monday.Farther east, a storm system tracking through the eastern Great Lakes is
set to generate periods of rain and snow in the Great Lakes and as far
west as the Upper Mississippi Valley this morning. In addition, the Storm
Prediction Center has issued a Marginal Risk for severe weather in western
Pennsylvania today. In the Northeast, widespread showers are anticipated
from the Southeast on north along the Northeast’s I-95 corridor. In
northern New England, temperatures will remain cold enough for
accumulating snow, particularly in the northern Appalachians. Snow will
pick up in intensity Sunday afternoon and persist into Monday morning from
northern New York and Vermont through central and northern Maine. Latest
WPC probabilities show a high chance (>70%) for snowfall totals >8″ in the
White Mountains of northern New Hampshire and into central Maine. The
Winter Storm Severity Index (WSSI) depicts Moderate impacts in these
areas, while lighter amounts (>4″ amounts) have a high chance (>70%) of
occurring in the higher elevations of the Adirondacks, the Green
Mountains, and into northern Maine. Minor Impacts are likely in those
areas according to the WSSI. Expect hazardous travel conditions in these
areas Sunday night and into the day on Monday. Light snow may stick around
into Monday night and early Tuesday across northern New England as the
storm slowly makes its way out to sea on Tuesday.Elsewhere, a fast moving disturbance tracking southeast through the Upper
Midwest may bring light rain and snow to portions of the region Monday
night and into Tuesday. Temperature-wise, most of the continental U.S.
remains devoid of frigid or winter-like air-masses. Much of the Southeast
and coastal Mid-Atlantic are likely to wake up to record breaking mild
minimum temperatures today. The same is also be possible in the Pacific
Northwest Monday and Tuesday mornings. Temperatures will continue to warm
up in the West by Tuesday, but colder temperatures look to make a return
in the East by mid-week.
Learn about wave patterns HERE.
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
Additional snow information can be found here and here. The second link provides animations.
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.
| 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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10
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| 8–
14 |
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| 3–
4 |
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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
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.
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| I hope you found this article interesting and useful. |
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