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
Sat Jun 22 2024
Valid 12Z Sat Jun 22 2024 – 12Z Mon Jun 24 2024…Heat wave focus shits from the Midwest/Ohio Valley into the
Mid-Atlantic states this weekend...…Heavy rain and flash flooding concerns across the Upper Great
Lakes/Mississippi Valley Saturday and northern New England Sunday……Heat building across the West this weekend, monsoon-like conditions for
the Desert Southwest…A heat wave will continue over much of the eastern U.S. south of a
quasi-stationary boundary and under the influence of longwave ridging
aloft this weekend. Forecast high temperatures Saturday will generally be
in the mid- to upper 90s from the central/southern Plains to the East
Coast. These temperatures remain the most anomalous and dangerous for
early Summer over portions of the Midwest/Ohio Valley east to the
Mid-Atlantic. Heat-related advisories and warnings are in place as
humidity will bring heat index values as high as the mid-100s. A potent
upper-level shortwave will help to finally push the boundary southward
Sunday, bringing welcome relief to much of the Midwest/Ohio Valley, while
the Mid-Atlantic continues to simmer. Numerous record-tying/breaking highs
are possible. In addition, overnight low temperatures will remain to the
mid- and even upper 70s, providing little relief from the heat overnight.
The combination of this heat coming early in the Summer season and
persisting over several days increases the level of heat stress for those
without reliable air conditioning.Widespread showers and thunderstorms will continue to the north along the
quasi-stationary boundary draped from New England west through the Great
Lakes and into the Upper Mississippi Valley. Plentiful moisture will
increase the chance for locally heavy downpours. The highest chance for
potentially significant heavy rainfall will be along the boundary ahead of
an upper-level wave over portions of the Upper Great Lakes/Upper
Mississippi Valley Saturday. Ongoing organized storms from overnight
Friday as well as the risk for more widespread, organized storms into the
day Saturday has prompted a Moderate Risk of Excessive Rainfall (level
3/4) over southern Wisconsin and northeastern Iowa for the threat of
scattered to numerous instances of flash flooding. A broader Slight Risk
(level 2/4) covers the region. In addition, a few storms may be severe,
with a Slight Risk of severe weather (level 2/5) issued by the Storm
Prediction Center for the threat of some damaging winds and a few
tornadoes. A locally higher threat for heavier downpours will also exist
over southern New England, with a Slight Risk in place. The noted more
potent upper-level shortwave arriving Sunday will help to push the
boundary south and eastward, bringing higher storm chances more broadly
across New England and southwestward though the Mid-Atlantic/Ohio
Valley/Tennessee Valley. Stronger, very moist low-level flow interacting
with the boundary over northern New England will bring the greatest chance
for heavy downpours and scattered flash flooding, with another Slight Risk
in place. A Slight Risk for severe weather also covers much of the same
region and southwestward into the northern Appalachians/Upper Ohio Valley,
where damaging winds and a few tornadoes will once again be the main
threats.Upper-level ridging will begin to build over the western and then central
U.S. following the shortwave passage, bringing rising temperatures across
this region as well. Forecast highs Saturday across much of the interior
Pacific Northwest, Great Basin, and California will be in the mid-90s to
low 100s. Locally higher temperatures into the mid-100s have prompted
heat-related advisories and warnings for the central California Valleys
into portions of southern California. The focus over the northern tier
will begin to shift eastward with the ridge on Sunday, with cooler highs
in the Pacific Northwest but temperatures soaring into the mid- and upper
90s over much of the central/northern High Plains. Conditions will remain
hot from central to southern California. Temperatures will still be hot
but closer to average for the Desert Southwest as Monsoon-like conditions
remain over the region. Highs Saturday and Sunday will range in the mid-
to upper 100s, with scattered showers and storms bringing the threat for
some locally heavy downpours and an isolated risk for flash flooding.
Elsewhere, a pair of waves of low pressure passing over portions of the
Southeast/Florida as well as south Texas will bring daily shower and storm
chances.
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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10
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14 |
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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. |
