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
Tue Sep 03 2024
Valid 12Z Tue Sep 03 2024 – 12Z Thu Sep 05 2024…Areas of heavy rain and the potential for flash flooding continue in
Texas and along the Gulf Coast the next couple of days……One more day of late-Summer heat for the north-central U.S. Tuesday
before focus shifts to a building heat wave in the West Wednesday…Thunderstorms capable of producing heavy rainfall will persist across
portions of Texas and along the Gulf and southeastern Atlantic Coasts this
week as very moist Gulf air pools around a quasi-stationary frontal
boundary lingering through the region. A passing upper-level disturbance
will lead to more widespread storms once again today (Tuesday) over
portions of central Texas where a locally greater threat for some flash
flooding will exist, with a Slight Risk of Excessive Rainfall (level 2/4)
outlooked for the region. Further east along the central Texas Gulf Coast,
very moist, onshore flow aided by a stubborn coastal low and continued
rounds of storms moving inland will bring further heavy downpours that
could lead to several inches of rainfall. A Slight Risk of Excessive
Rainfall has been included here as well as wet antecedent conditions from
rainfall over the past few days will increase the threat for some
additional instances of flash flooding in the area. The upper-level
disturbance will lift northeastward on Wednesday, increasing storm
coverage over the central Gulf Coast and possibly north into the Lower
Mississippi Valley. Another Slight Risk of Excessive Rainfall is in place
given the threat for heavy downpours and scattered flash flooding. Storms
will also increase along the southeastern Atlantic Coast by Wednesday, and
daily thunderstorm chances will continue for the Florida Peninsula.Further north, an upper-level trough and associated surface cold front
will bring showers and thunderstorms to the northern Rockies today. Some
locally heavy downpours will be possible with an isolated threat of flash
flooding over central Idaho and southwestern Montana. Ahead of this
system, an upper-level ridge over the northern/central High Plains will
lead to another day of well above average, hot late-Summer temperatures,
particularly over the northern High Plains. Forecast highs are into the
90s, with some upper 90s possible for the western Dakotas. The approaching
system from the west will help to bring temperatures back down to average
Wednesday, with highs in the low to mid-80s. Showers and storms are
expected with the passage of the system, particularly over the central
High Plains. Storms chances will also spread into the Upper Midwest as the
system continues east Wednesday night.Attention in the mid- to late week will turn to a building heatwave over
the West. A strong ridge will settle in over the West Coast following the
passage of the upper-trough over the northern tier, with highs on Tuesday
already beginning to climb into the upper-90s and low 100s over interior
California and 100s to 110s in the Desert Southwest. Then, on Wednesday,
temperatures will soar into the low 100s over interior California and into
the 90s in the Pacific Northwest. While not as hot, much above average
temperatures are expected for coastal areas too, with highs into the low
80s for some locations. Heat-related warnings and advisories have been
issued for the Desert Southwest and central/southern California outside of
the immediate coast given a heightened risk for heat-related illness,
especially for those without access to effective air conditioning.
Elsewhere, most of the eastern U.S. outside of the the South will be dry
with generally mild temperatures. Early Fall-like highs in the 70s are
expected throughout New England, the Mid-Atlantic, and Carolinas.
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. –
