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
Mon Oct 30 2023
Valid 12Z Mon Oct 30 2023 – 12Z Wed Nov 01 2023…Well below average temperatures and record-breaking cold to continue
expanding from the central United States to the Appalachians through the
beginning of November……Shower activity to stretch from the southern Plains to the Northeast
today, with accumulating snowfall forecast across northern Maine……Snow squalls possible across parts of the Northern Plains, Upper
Midwest, and Great Lakes through Halloween……Santa Ana wind and very dry conditions across California will lead to
an increased threat of wildfire activity…
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 potent autumn cold front is set to complete its trek across the CONUS by
midweek as it pushes through the Gulf Coast and East Coast states by
tonight. In its wake, well below average temperatures underneath strong
high pressure are located across the central United States and will
continue to slide eastward. Most impacts associated with this late-October
cold are in the form of overnight frost and freezing temperatures. Freeze
Warnings and Watches extend from central Arizona through the southern
Plains and into the Midwest and Ohio Valley, where the growing season is
expected to come to an end this week. The coldest temperatures will be
located throughout the central/northern Rockies and northern Plains as
lows dip into the teens and single digits. By Wednesday morning, low
temperatures into the teens and 20s between the southern Plains and
central/southern Appalachians will have the potential to break several
daily record lows. These temperatures also equate to around 20 to 25
degrees below average for this time of year.This same frontal boundary will spread scattered showers from the southern
Plains to the Northeast today with lingering wet weather over the southern
Mid-Atlantic on Tuesday. A developing area of low pressure pushing from
the Mid-Atlantic to the Gulf of Maine will help spread a widespread
precipitation shield through the Northeast today that is forecast to
overlap with subfreezing temperatures located over northern Maine. Here,
precipitation will fall as snow and could be heavy at times. Winter
Weather Advisories are in effect due to the potential for 4 to 8 inches of
snowfall.The next system dropping southward from south-central Canada will bring
the potential for snow showers and snow squalls to parts of the northern
Plains today. As this system pushes into the Upper Midwest and Great Lakes
on Tuesday, additional snow squalls and lake-effect snow is possible.
These squalls may contain high snowfall rates and rapidly reduce
visibility where they impact. The heaviest lake-effect snow is likely to
impact the Keweenaw Peninsula and other area of the U.P. of Michigan,
where Winter Weather Advisories have been issued. Elsewhere, a storm
system approaching the Pacific Northwest on Wednesday night will usher in
locally heavy rain to parts of northwest Oregon and western Washington.
Rain will also impact most of the high elevations throughout the Cascades
as snow levels rise above 8000 ft.Santa Ana winds are expected to continue impacting much of Southern
California today as strong high pressure settles over the Great Basin and
Rockies. Maximum wind gusts up to up to 70 mph are possible, which has
prompted High Wind Warnings throughout the region. Dry vegetation and low
relative humidity will also combine to produce Critical fire weather.
Residents and visitors are advised to use extreme caution with anything
that can spark a wildfire.
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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