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
Thu Nov 23 2023
Valid 12Z Thu Nov 23 2023 – 12Z Sat Nov 25 2023…A snow event is forecast to impact the northern and central Rockies as
well as the nearby High Plains during Thanksgiving holiday weekend……Arctic air will overspread much of the northern portion of the country;
mainly dry for the remainder of the country through the holiday weekend…
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
On this Thanksgiving Day, a snow event is brewing over the northern
Rockies as moisture from a a Pacific frontal system begins to interact
with an intrusion of arctic air from across central and western Canada.
This interaction will lead to an expanding area of snow commencing today
over southern Idaho into northern Nevada, and especially over Wyoming by
tonight following the passage of an arctic front. Further interactions of
the two systems will push the snow farther southeast into much of Colorado
and Utah on Friday. The snow will also spread farther into the nearby
High Plains from north to south as the center of a cold dome of high
pressure settles southeastward into the northern Plains on Friday.
Rapidly falling temperatures along with increasingly strong and gusty
northerly winds will accompany the snow, with gale-force winds possibly
impacting southwestern Wyoming tonight. It appears that generally more
than 6 inches of snow can be expected area-wide from the north-central
portion of the High Plains to locally terrain-enhanced amounts of over a
foot in portions of Wyoming and Colorado through the next couple of days.
The snow should have mostly tapered off over Wyoming by Saturday morning
but will likely linger across portions of Colorado as an upper-level
disturbance swings across the region. Wet snow is forecast to dip as far
south as northern New Mexico early on Saturday when the eastern edge of
the snow begins to head toward the central Plains.Meanwhile, the East Coast has generally cleared out behind an exiting low
pressure system into the Canadian Maritimes just in time for Thanksgiving
festivities. Only near the eastern border of Maine is still receiving
snow from the system early this morning. Nevertheless, much of the
Northeast will likely contend with gusty winds as the exiting storm
continues to deepen. Some snow showers are forecast to resume over
interior New England by this evening and on Friday as an arctic front
approaches from the west.Much of the remainder of the country will remain dry as we head further
into the holiday weekend. The exception will be near the Gulf Coast where
an upper-level disturbance will send some light showers from west to east
across the region. Showers will also linger over southern Florida near a
stationary front. Temperatures across the country will likely average
below normal for a change with arctic air intrusion from the north. The
coldest anomalies will likely be over the central High Plains in the
mornings of Friday and Saturday as temperatures dip into the teens and
20s. The South will remain cooler than normal through the holiday weekend
behind the first front while the Northeast will get colder on Saturday
behind the second front.
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.
| 6–
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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