Here is 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.
We start with the U.S. Information. You can update this section here but these are 48 to 72-hour forecasts so if I have not been able to update this area twice daily, what is shown is still valid and the images in the body of the article update automatically but sometimes they are a bit slow to update.
Short Range Forecast Discussion NWS Weather Prediction Center College Park MD Wed Nov 22 2023 Valid 12Z Wed Nov 22 2023 - 12Z Fri Nov 24 2023 ...Widespread rainfall and locally heavy rain along the East Coast are expected to taper off by this evening... ...Accumulating snow today across northern New England and especially over northern Maine... ...A white Thanksgiving is on tap for northern and central Rockies as arctic air intrudes the northern tier of the country on Thanksgiving Day into Friday...
First, 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)
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 low pressure complex that had brought a round of soaking rain across much of the eastern U.S. on Tuesday is in the process of moving off the East Coast early this morning. However, the Carolinas and New England will likely see precipitation lingering longer today as rain tapers off in other areas along the East Coast. Cold air trapped in New England will support snow today as the center of a low pressure system passes just to the south. Up to 8 inches of snow is forecast for portions of northern Maine. By Thanksgiving morning, the low pressure system will largely move off the East Coast, bringing clearing skies just in time for Thanksgiving festivities. Nevertheless, much of the Northeast will likely contend with blustery conditions as the storm is forecast to deepen quite rapidly just off to the east. Some snow showers are forecast to resume over interior New England by Thanksgiving evening as an arctic front approaches from the west. Meanwhile, a snow event is brewing over the northern Rockies. Rain associated with a frontal system currently moving onshore into the Pacific Northwest is forecast to merge with a surge of arctic air down the Canadian high plains. The result of this interaction will be a developing and expanding area of snow commencing today over Idaho to western Montana, then spreading southeastward into much of Wyoming and portions of the Great Basin on Thanksgiving Day. By Thanksgiving evening into Friday morning, much of Colorado and Utah as well as nearby central High Plains will likely see snow picking up in intensity, along with increasingly strong and gusty winds from the north. Portions of Wyoming could see a foot of snow on the ground by Friday evening. Temperatures are expected to be much above average across the northern U.S. into Wednesday, followed by much colder temperatures and the above mentioned snow threat for Thanksgiving Day. This colder than average air will continue to sink southward at the end of the week into this weekend across the central Rockies and into the central to southern Plains. Cooler than average temperatures also likely across the southeast quarter of the nation on Thanksgiving, with these cooler than average temperatures then taking hold across much of the nation by this weekend, save for the immediate West coast and South Florida.
Learn about wave patterns HERE.
Below is the current five-day cumulative forecast of precipitation (Updates can be found HERE)
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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14 |
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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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