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 05 2024
Valid 12Z Mon Aug 05 2024 – 12Z Wed Aug 07 2024..Hurricane Debby is expected to cause potentially catastrophic Flash and
Urban Flooding, life-threatening storm surge, and strong winds across
portions of Florida and the Southeast……There’s potential for Excessive Rainfall and Severe Thunderstorms
across portions of the Upper Midwest, Lower Great Lakes and Northeast
through Tuesday……There are Excessive Heat Warnings over parts of Central/Southeastern
California and the Southwest and Heat Advisories over parts of the Lower
Mississippi Valley…Hurricane Debby will make landfall this morning over Florida’s Big Bend
region, where Hurricane Warnings are in effect. Life-threatening storm
surge is possible along portions of Florida’s Gulf Coast, where Storm
Surge Warnings are in effect. Widespread thunderstorms are likely to
continue across Florida and spread into Georgia and the Southeast Coast
today. The Storm Prediction Center issued a Slight Risk of Severe
Thunderstorms (level 2/5) for portions of northern Florida through
southern/coastal Georgia and into South Carolina’s central coast, where
the chance for tornadoes is greatest. Elsewhere, Tropical Storm conditions
are are expected along Florida’s west coast including the Tampa Bay area
today.Potentially historic heavy rainfall, associated with Hurricane Debby,
across southeast Georgia and South Carolina through Friday morning will
likely result in areas of catastrophic flooding. Heavy rainfall will
likely result in considerable flooding impacts from portions of central
and northern Florida through the Coastal Plains of the Carolinas through
Friday. There are High Risks (at least 70%) of Excessive Rainfall
stretching from Florida’s Big Bend region up through coastal Georgia and
into South Carolina’s southern coast today followed by another on Tuesday
along the Georgia–South Carolina Coastline. Anywhere between 7-15 inches
of rain, with locally higher amounts, are possible from north-central
Florida to South Carolina’s northern coast over the next 48 hours. For
more information go to hurricanes.gov.A slow moving cold front extending from the Northern High Plains to the
Northeast will be the focus for scattered showers and thunderstorms across
the northern tier states down to the Midwest and Mid-Atlantic over the
next couple of days. Today, showers and thunderstorms are expected to
develop and potentially produce severe thunderstorms and Excessive
Rainfall over parts of the Upper Midwest and interior Northeast. Slight
Risks of Flash Flooding (at least 15%) and Severe Storms are in effect
over the aforementioned areas today. The threat for heavy rainfall shifts
into the New York Tri-State area on Tuesday where another Slight Risk of
Excessive Rainfall is in effect due to the potential involvement of
tropical moisture from Debby. A low pressure system is expected to develop
over the Northern High Plains of Montana on Tuesday and contribute to
supercell/severe thunderstorm activity that evening. Severe wind
gusts/hail will be the primary threats from these storms.High temperatures will likely remain well below average across the
Northern Plains and Upper Midwest over the next several days, while
Excessive Heat Risk grows across the Central Gulf Coast/Lower Mississippi
Valley. Excessive Heat Warnings are in effect across the Desert Southwest
and portions of California’s southern/central Valley. Monsoonal storms are
likely to continue across the Southwest and Four Corners region this week
with a Slight Risk of Excessive rainfall over far south-central Arizona on
Tuesday.
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. |
