Weather: Tonight, Tomorrow, Next Day, Five Days, and Intermediate-Term Outlooks for the U.S. and a Five-Day Forecast for the World: posted April1, 2023

Updated at 9:34 p.m. Saturday April 1, 2023

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 five-day World weather forecast.

We start with the U.S. Information.

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
419 PM EDT Sat Apr 01 2023

Valid 00Z Sun Apr 02 2023 – 00Z Tue Apr 04 2023

…There is an Enhanced Risk of severe thunderstorms over parts of the
Lower Great Lakes, Central Appalachians, and the northern Mid-Atlantic…

…Heavy snow over parts of the Cascades and Northern Central Rockies…

…There is a Slight Risk of excessive rainfall over parts of the Southern
Plains/Lower Mississippi Valley on Sunday…

Information Note: This article is now set up so that all the maps should automatically update. The links are provided but should not be needed. The downside is that if you go back to a previous version the maps will have been updated and not be relevant to the date of the prior article but will be current information. The NWS twice-a-day 48-hour forecasts do not auto-update in this article. I do it and I can be late doing it. The link for the NWS updates is HERE. Most of our other articles will not be set up to auto-update so that prior versions of the article will be meaningful.

Last night we published the Updated Outlook for the month of April. You can access it HERE. Remember the easiest way to get back to the article you were reading is to hit the return arrow in the upper left of your screen. There are other ways.

First, the 48-Hour Forecast (It is a 48 to 72 Hour Forecast actually)

Daily weather maps. I try to keep the below three maps updated. The Day 1 map updates twice a day and the Day 2 and 3 maps update only once a day. I will be doing the updating during the period described in the title of the article but if you happen to read this article later, 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.

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. We post at least one of those updates daily, sometimes both. The Highlights are shown in the lede paragraph of this article.

A front extending from the Northeast roughly southwestward to the
Central/Western Gulf Coast will create showers and severe thunderstorms
over parts of the Northeast. Therefore, the SPC has issued an Enhanced
Risk of severe thunderstorms over the Lower Great Lakes, Central
Appalachians, and the northern Mid-Atlantic through Sunday morning.

The hazards associated with these thunderstorms are frequent lightning,
severe thunderstorm wind gusts, hail, and a few tornadoes.

Moreover, the upper-level energy associated with the storm will produce
snow and rain over parts of the Great Lakes and Ohio Valley, ending later
Saturday evening. Overnight Saturday, snow will develop over parts of the
Northeast and into the Central Appalachians, ending by late Sunday morning.

Meanwhile, along the southern half of the front, showers and severe
thunderstorms will develop over parts of the Southeast. Therefore, the SPC
has issued a Slight Risk of severe thunderstorms over parts of the
Southeast through Sunday morning. The hazards associated with these
thunderstorms are frequent lightning, severe thunderstorm wind gusts,
hail, and a few tornadoes. The rain will end overnight Saturday over the
Southeastern portion of the U. S.

On Sunday, the front over the Gulf Coast will move northward as a warm
front. Moisture pooling along the boundary will produce heavy rain.
Therefore, the WPC has issued a Slight Risk of excessive rainfall over
parts of the Southern Plains/Lower Mississippi Valley from Sunday into
Monday morning. The associated heavy rain will create mainly localized
areas of flash flooding, with urban areas, roads, and small streams the
most vulnerable.

Moreover, a front extending from the Northern High Plains southwestward to
Northern California will move eastward to the Great Lakes to the Central
Plains and then to the Central Rockies by Monday evening. The energy
associated with the boundary will aid in procuring coastal rain and
higher-elevation snow over parts of the Pacific Northwest and Northern
California through Sunday morning. In addition, snow will develop over
parts of the Northern Intermountain Region through Sunday morning, too.

On Sunday morning, weak onshore flow and additional upper-level energy
will create additional coastal rain and higher-elevation snow over the
Pacific Northwest and Northern California through Monday evening. In
addition, the energy will produce heavy snow over the Cascades through
Monday. By Sunday afternoon, snow returns to the Northern Intermountain
Region, continuing into Monday. Waves of low pressure move along the front
producing snow over parts of the Northern/Central Rockies and Great Basin
from Sunday into Monday.

Additionally, on Sunday, as the low pressure associated with the system
moves into the Upper Midwest, light snow will develop over parts of the
Upper Midwest into Monday. As the storm moves into Michigan, light rain
and snow develop over the Upper Great Lakes from Sunday afternoon into
Monday. Furthermore, rain will develop along the front on Monday afternoon
into Monday evening from parts of the Northeast to the Ohio Valley.
Showers and thunderstorms will return to the Southeast on Monday.

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 /produ cts/pre dictions/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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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.

Month to Date Information

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 5-Day forecasts for temperature and precipitation. Updates and much additional information can be obtained HERE

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.

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I hope you found this article interesting and useful.

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