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
Thu Aug 29 2024
Valid 12Z Thu Aug 29 2024 – 12Z Sat Aug 31 2024…Above average heat expected to linger across the Ohio and Tennessee
Valleys through Friday before a cooling trend arrives by the weekend……Strong to severe thunderstorms expected across the upper Midwest and
Mid-Atlantic today, then across the Great Lakes on Friday……Some tropical heavy rain and thunderstorms could affect the western
Gulf Coast region through the next couple of days…A vigorous low pressure system currently centered near the U.S.-Canadian
border of the High Plains will move steadily across southern Canada
through the next couple of days. Strong to severe thunderstorms forming
ahead of a potent cold front trailing south from the low pressure center
will likely impact North Dakota early this morning, before quickly
advancing into Minnesota and down across the central Plains into this
evening. These thunderstorms could develop into supercells that may
contain damaging winds, large hail, and a few tornadoes. Meanwhile,
thunderstorms across the Mid-Atlantic could also be strong to severe where
some gusty winds and heavy rain may lead to isolated to scattered
instances of flash flooding by this evening and into the overnight. The
front that helps trigger these thunderstorms will gradually edge farther
southward into the Mid-Atlantic on Friday, bringing relief from the heat
with high temperatures only reaching into the 70s for much of the
Northeast. The cool air will not have a chance to reach into the Ohio and
Tennessee Valleys though as southerly flow increases ahead of the deep low
pressure system in southern Canada. A couple more days of heat with
afternoon high temperatures well up into the 90s are expected in these
areas. Above average overnight low temperatures will provide little
relief, lows will likely stay in the 70s for much of the region. A
cooling trend will set in by the weekend behind the cold front. Scattered
thunderstorms with embedded strong to severe storms will then extend
southwestward across the Midwest into the central Plains on Friday as the
trailing end of the front begins to slow down and become nearly stationary
into the southern Plains by Saturday.Separate from the frontal system across the northern tier of the country,
tropical moisture from the Gulf of Mexico could lead to heavy rain across
portions of the western Gulf Coast region as an upper-level low lingers
over Texas. A small scale low pressure center could form and interact
with a subtle coastal front to enhance rainfall rates, leading to the
potential for flooding issues over portions of the the western Gulf Coast
through the next couple of days.Across the rest of the country, a general cooldown is expected behind the
cold front across the north-central U.S. and high temperatures should be
generally in the middle 80s. Much of the Southeast should be warm and
humid with commonplace high temperatures in the middle 90s. A warming
trend is expected for the western U.S. following the recent cool spell as
the strong low departs into southern Canada.
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.
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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 [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.
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I hope you found this article interesting and useful. –
