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
Sun Oct 22 2023
Valid 12Z Sun Oct 22 2023 – 12Z Tue Oct 24 2023…Cool Sunday for the Northeast with a freeze possible in the Upper Ohio
Valley Monday morning……Much above average high temperatures continue for much of the central
and western U.S……Frontal system brings precipitation chances inland from the West Coast
to the Northern Rockies/Plains…
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
Some lingering rain showers and breezy winds are expected Sunday in New
England as a low pressure system departs northeastward into Canada.
Forecast high temperatures broadly from the Great Lakes into the Northeast
will remain much below average following a frontal passage, with 40s and
50s for the interior and 60s closer to the coast. Frost and Freeze related
advisories are in place for portions of the Upper Ohio Valley Monday
morning as low temperatures drop into the low to mid-30s. High
temperatures should warm a bit on Monday as conditions moderate.Broad upper-level ridging over the central-western U.S. will remain in
place on Sunday with forecast highs once again running 10-20 degrees above
average. Highs will range in the 60s and 70s from the Great Basin into the
Rockies and Northern/Central Plains, the 80s for the Lower Mississippi
Valley and Southern Plains, and the 90s for the Desert Southwest. The
ridge will shift a bit eastward on Monday, allowing for some cooler
temperatures in the west as a frontal system approaches while highs soar
into the upper 70s and 80s from the Central Plains into the Middle
Mississippi Valley. Highs will be closer to average further into the
Southeast and Florida, with 70s and some 80s forecast.An upper-level trough will help to push a quasi-stationary frontal system
lingering in the northwest south and eastward across the region, with
incoming Pacific moisture helping to spread precipitation chances inland.
Light to moderate showers and thunderstorms are forecast from northern
California into the northern Great Basin/Rockies on Sunday, shifting
towards the Northern Plains by Monday. Some snow may mix in for higher
mountain elevations. More potent snow chances should begin to arrive by
early Tuesday morning in the northwest and the Northern Rockies as another
system drops southward from Canada. Highs Sunday will be below average for
much of California, especially northern portions where the rain is
expected, with mainly 60s forecast. Noted above average highs for much of
the Interior West Sunday will fall closer to average Monday following the
frontal passage, with 50s and 60s expected. As the frontal system
continues east, increasing moisture associated with Tropical Storm Norma
currently in the Pacific is forecast to bring showers and thunderstorms to
the Southern Plains overnight Monday, with some locally heavy rainfall
possible.
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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