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
Sat Nov 25 2023
Valid 12Z Sat Nov 25 2023 – 12Z Mon Nov 27 2023…Winter storm with areas of heavy snow and gusty winds continues further
into the Central Plains Saturday……Broad area of showers and thunderstorms expected across the eastern
U.S. Sunday; areas of moderate lake-effect snow possible for the Great
Lakes……Temperatures will be below average for large sections of the country
this 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
A winter storm associated with an upper-level trough/surface frontal
system moving through the Central/Southern Rockies will continue today,
with snow tapering off for the Central/Southern Rockies and adjacent
portions of the High Plains while shifting deeper into the Central Plains.
An axis of moderate to heavy snowfall is forecast from southwestern to
northeastern Kansas with totals of 4-8 inches possible. Gusty winds as
well as heavy snow bands with rates of 1″/hr at times will contribute to
hazardous travel conditions. A wintry mix with additional lighter
accumulations of snow is expected from the Texas/Oklahoma panhandles
through southeastern Kansas into northern Missouri. Conditions should
clear out by Sunday morning.Some locally heavy rainfall will be possible with thunderstorms in South
Florida Saturday, with a chance of an isolated instances or two of flash
flooding. Then, as the upper-level trough and a pair of surface frontal
systems begin to shift rapidly eastward, an area of expanding showers and
some thunderstorms is expected across the eastern U.S., starting late
Saturday/early Sunday for portions of Texas to the Lower Mississippi
Valley, eventually pushing through the Ohio Valley and Southeast towards
the East Coast by later Sunday afternoon. More moderate to heavier amounts
are most likely along the Gulf Coast and also across portions of New
England as a coastal low organizes to the southeast. A wintry mix will be
possible further north and west from the Midwest into the Appalachians and
the Interior Northeast, though any accumulations should remain limited.
However, northwesterly flow over the Great Lakes will lead to some locally
enhanced areas of moderate lake effect snowfall, particularly for
favorable areas of the Upper and Lower Peninsulas of Michigan where totals
Sunday could exceed 4″.Temperatures will generally be below average for much of the country this
weekend, with the greatest anomalies in portions of the Central and
Southern Plains. Highs on Saturday will be in the 20s and 30s for the
Central Plains and 40s into northern portions of the Southern Plains, with
morning lows Sunday dipping into the teens and 20s, leading to wind chills
in the single digits and potentially even below 0 for some location. Highs
in the 30s and 40s will be common in the Southwest with 50s and 60s in the
South. Temperatures will be well below average as well Saturday in New
England, with 20s and 30s forecast, as well as in the Mid-Atlantic, where
40s are expected. Conditions should moderate a bit Sunday. The West will
also see many areas below average, with 30s and 40s for much of the
interior and 60s to low 70s for the Desert Southwest. The West Coast will
be closer to average, with 50s and 60s, and 70s for Southern California.
However, the central California Valleys as well as northern portions of
the Mojave Desert will see lows near the freezing mark, with
freeze-related advisories in place.
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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