Here is what we are paying attention to this evening and the next two days from this afternoon’s NWS Forecast.
...Oppressive to dangerous heat and humidity continues across the southern Plains into the lower Mississippi Valley as some relief from the heat moves into the central High Plains... ...Heat increases across the Desert Southwest and interior valleys of California... ...Threat of heavy rain moving southward into the Southeast next couple of days as another heavy rain threat emerges near the central Gulf Coast... ...Severe thunderstorms threat expected to track across the northern tier states for the next couple of days...
Continuation of the NWS Short Range Forecast (It is updated twice a day and these updates can be found here.
An upper-level high anchored over the southern Plains will continue to sustain the ongoing heat wave across the region for the next couple of days. Farther east, the effect of high humidity will make the heat more oppressive over the lower Mississippi Valley even though the temperatures there are not expected to climb as high. Heat indices are forecast to once again peak above 110 degrees at many places during the afternoon on Monday. Slightly cooler air behind a cold front is forecast to work its way down the central Plains during the next couple of days, bringing in some welcome relief there through Tuesday. However, the interior Desert Southwest and interior valleys of California will see the heat increasing in intensity, especially Monday afternoon, with actually temperatures likely exceeding 115 degrees at the hottest locations in the desert. Meanwhile, waves of low pressure forming along a cold front will gradually shift the threat of heavy rain southward into the Southeast for tonight and early Monday. By later on Monday into Tuesday, tropical moisture gathering in the northern Gulf of Mexico will begin to interact with the nearly stationary front where the threat of heavy rain is forecast to increase near the central Gulf Coast by Tuesday. In the meantime, upper-level energy and a weak front will track across the northern tier states for the next couple of days. Strong to severe thunderstorms are possible near and ahead of the front. The highest threat of severe storms with locally heavy downpours is expected to be across the northern Plains to the upper Midwest through tonight, shifting east into the Midwest on Monday, and then into parts of the Northeast on Tuesday. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Farther south, weak monsoonal moisture will trigger diurnal showers and thunderstorms over parts of the Southwest, southern Rockies, and into parts of the Central Rockies for the next couple of days. On Monday into Monday night, some of the moisture is forecast to interact with a front to increase the threat of heavy rain over the High Plains of southern Colorado into northern New Mexico.
21 to 28 Day Forecast/Outlook (On Thursday it is a 22 day forecast and when the Week 3 – 4 Forecast Updates on Friday it becomes a 28 day forecast)
Links to “Outlook” maps and discussions 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 from deviation from normal and the likelihood of these deviations.
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 reads to get daily updates on weekdays. Use your own judgment to decide if you need to update these images.
Worldwide Tropical Forecast
(This graphic updates on Tuesdays) If it has not been updated, you can get the update by clicking here https://www.cpc.ncep.noaa.gov/products/precip/CWlink/ghazards/images/gth_small.png
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Detailed Maps and Reports for the Western Atlantic and the Pacific Oceans
Below are three maps that summarize the situation for the Atlantic, Eastern and Central Pacific. Additional information can be accessed by clicking HERE
First the Eastern Pacific
Click to view the forecast map and have access to additional information https://www.nhc.noaa.gov/gtwo.php?basin=atlc&fdays=5
Then Eastern Pacific
Click to view the forecast map and have access to additional information https://www.nhc.noaa.gov/gtwo.php?basin=epac&fdays=5
Then Central Pacific
Click to view the forecast map and have access to additional information https://www.nhc.noaa.gov/gtwo.php?basin=cpac&fdays=5
And the Western Pacific
Click to view the forecast map and have access to additional information https://www.metoc.navy.mil/jtwc/jtwc.html