Extended Forecast Discussion NWS Weather Prediction Center College Park MD 257 AM EDT Sun Jun 26 2022 Valid 12Z Wed Jun 29 2022 - 12Z Sun Jul 3 2022 ...Pattern Overview and Weather/Hazard Highlights.. An upper ridge will remain in place over the southern half of the CONUS throughout next week, while progressive flow aloft across the northern tier will be accompanied by periodic shortwave troughs embedded in the flow. For the middle of the week, a stationary front will likely be stalled along the Southeast Coast and Gulf Coast region, and this boundary may act as the focus for enhanced moisture and greater coverage of showers and storms. Elsewhere, another shortwave trough passes across the Northern Plains and Great Lakes region mid to late week, bringing periodic chances for showers/storms and locally heavy rainfall. Ahead of that trough passage, hot temperatures will progress from the Rockies to the Plains and eventually the Northeast by the end of the upcoming work week, followed by slightly cooler readings by next Sunday as a cold front settles southward. ...Guidance Evaluation/Predictability Assessment... The 00Z model guidance suite is in very good synoptic scale agreement through the end of the week across the nation. Guidance solutions seem reasonably well clustered well into medium range timescales in a pattern with above normal predictability with the mid-larger scale pattern evolution. The WPC medium range product suite was primarily derived from a deterministic model blend through early Friday, and then slightly more of the ensemble means going into next weekend to account for greater differences in the mesoscale details. This maintains good overall WPC product continuity, and individual system forecast differences seem well addressed by the mode blend. Hamrick Additional 3-7 Day Hazard information can be found on the WPC medium range hazards outlook chart at: https://www.wpc.ncep.noaa.gov/threats/threats.php WPC medium range 500mb heights, surface systems, weather grids, quantitative precipitation, experimental excessive rainfall outlook, winter weather outlook probabilities and heat indices are at: https://www.wpc.ncep.noaa.gov/medr/5dayfcst500_wbg.gif https://www.wpc.ncep.noaa.gov/medr/5dayfcst_wbg_conus.gif https://www.wpc.ncep.noaa.gov/5km_grids/5km_gridsbody.html https://www.wpc.ncep.noaa.gov/qpf/day4-7.shtml https://www.wpc.ncep.noaa.gov/#page=ero https://www.wpc.ncep.noaa.gov/wwd/pwpf_d47/pwpf_medr.php?day=4 https://www.wpc.ncep.noaa.gov/heat_index.shtml