This article focuses on what we are paying attention to in the next 48 to 72 hours. The article also includes weather maps for longer-term U.S. outlooks and a six-day World weather outlook which can be very useful for travelers.
First the NWS Short Range Forecast. The afternoon NWS text update can be found here after about 4 p.m. New York time but it is unlikely to have changed very much from the morning update. The images in this article automatically update.
Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
Mon Aug 19 2024
Valid 12Z Mon Aug 19 2024 – 12Z Wed Aug 21 2024…There is a Slight Risk of excessive rainfall over parts of New England
on Monday……There is a Slight Risk of severe thunderstorms over parts of the
Central High Plains on Monday……There are Excessive Heat Warnings over parts of the Southern Plains and
Heat Advisories over parts of the Southern Plains and Lower Mississippi
Valley…A front extending from the Northeast Coast across the
Mid-Atlantic/Southeast Coast and then across the Gulf Coast State will
move off most of the Eastern Seaboard while lingering over the Southeast
by Wednesday. The boundary will produce showers and thunderstorms with
heavy rain over parts of New England as a plume of moisture feds into the
area. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive
rainfall over parts of New England through Tuesday morning. The
associated heavy rain will create mainly localized areas of flash
flooding, with urban areas, roads, small streams, and low-lying areas the
most vulnerable.Moreover, showers and thunderstorms will develop along the front from the
Mid-Atlantic to the Southeast and the Gulf Coast State. Showers and
thunderstorms will also develop over parts of the Central Appalachians and
Ohio Valley on Monday.In addition, on Monday, upper-level energy over the Central Rockies will
interact with ample amounts of moisture to produce showers and severe
thunderstorms over parts of eastern Colorado. Therefore, the SPC has
issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the
Central High Plains through Tuesday morning. The hazards associated with
these thunderstorms are frequent lightning, severe thunderstorm wind
gusts, hail, and a minimal threat of tornadoes.Furthermore, monsoonal moisture and daytime heating will create showers
and thunderstorms over parts of the Southwest, Eastern Great Basin, and
Northern/Central Rockies from late afternoon into late evening on Monday.
On Tuesday, the showers and thunderstorms will be over a much smaller area
over the Southwest and adjacent regions. Additionally, disorganized
upper-level energy will aid in triggering showers and thunderstorms over
parts of the Northern/Central Plains. Further, on Tuesday, an upper-level
low will move over parts of the Northeast, creating rain over parts of the
area. Additionally, showers and thunderstorms will also develop over parts
of Florida.As the quasi-stationary front moves southward over the Southern Plains and
Lower Mississippi Valley, the areas under Excessive Heat Warnings and Heat
Advisories have reduced to parts of the Southern Plains and Lower
Mississippi Valley. Moreover, people spending more time or effort outdoors
or in a building without cooling in the areas of heat warnings are still
at an increased risk of heat-related illness.
To get your local forecast plus active alerts and warnings click HERE and enter your city, state or zip code.
Learn about wave patterns HERE.
Then, looking at the world and of course, the U.S. shows here also. Today we are looking at precipitation.
Please click on “Read More” below to access the full Daily Report issued today.
| Notices: What would you like to learn about? Please provide that to me via the comment section at the end of the article. |
Now more detail on 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) (Key to surface fronts shown on maps and you will then also be able to insert a city name or zip code and get a local NWS forecast).
TOMORROW
NEXT DAY
We have a new animation of the forecast which shows how things may play out over the next 60 hours. To update click ANIMATION. Doing so will get you to the dashboard. You can then step through the animation or hit LOOP on the upper right of the display. You will have to hit the back arrow ← at the top left on your computer to get back into this article. It is a little more trouble than before but I think NOAA scrapped the animation routine I was using so we have to keep up with “progress”.
The NWS Climate Prediction Center’s: Watches, Warnings, and Advisories plus other information can be found HERE. That takes you to the NWC Severe Weather Site. From there you can select among many categories of information. Remember to hit the back arrow ← at the top left of your screen to return to 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.
Below is the current five-day cumulative forecast of precipitation (Updates can be found HERE)
Ski SnowReports will Resume in the Fall.
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. These links may also be useful for those viewing this article on a cell phone or other small screen.
| 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
|
|
|
| 8–
14 |
|
|
| 3–
4 |
|
|
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 [that website is has been intermittent so be patient]
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. Note that unless there is an out-of-season storm the below images will not update until the National Hurricane Center starts their seasonal update of these maps on June 1. I include them simply because there can be an out-of-season event in which case it should show up in these maps.
–
I hope you found this article interesting and useful. –
