780 FXUS63 KFGF 230839 AFDFGF Area Forecast Discussion National Weather Service Grand Forks ND 339 AM CDT Mon Jun 23 2025 .KEY MESSAGES... - Next chance for severe thunderstorms is Friday & Saturday... && .DISCUSSION... Issued at 320 AM CDT Mon Jun 23 2025 ...Synopsis... 500 mb tourgh in Saskatchewan moving east-northeast. This is helping to push the ridge axis a bit east and take the unstable airmass east of our area and end the t-storm threat early this morning. A few showers will remain over a part of the far southeast fcst area til past sunrise, but otherwise looking at a dry period today & Tuesday. Separate 500 mb short wave near Regina will move northeast and take its rain with it. A second wave near Edmonton will move southeast and east thru Saskatchewan later today and tonight with chance of showers and t-storms with it but again remaining north of the border. Satelllite shows a dry slot working into central and will be working into E ND early this morning ahead of upper level trough. Clouds with trough as it moves ENE into Manitoba will return to DVL basin and northern valley later this morning and aftn before clearing out this evening. Weak high pressure builds overhead tonight with light winds. Also a possibility for ground fog in this situation, but airmass is drier moving in, but low temps in the 40s anticipated and RH values rising to near 100 pct near dawn support some ground fog formation. Will not mention it yet in the grids but something to monitor for later input. Wed-Thu will see our next 500 mb wave round the west edge of the 500 mb ridge centered over the Ohio Valley and mid atlantic region with this wave moving into Nebraska then SE SD into southern MN by 12z Wed. Additional 500 mb short waves follow for a wet period for areas to our south. For our area will need to watch for a weaker northern wave coming out from Wyoming into ND Wednesday which may bring a few showers or t-storms. Severe weather is not anticipated. ...Friday & Saturday Severe Storm Risk... There is forecast to be a stronger 500 mb wave that will move in off the Pacific into Washington and Southern B.C. Thursday and it movfes into southern Saskatchewan Friday and then moves northeast into central Manitoba Saturday. Mean enembles from EC/GFS/Canadian show >70 pct chance where 0-6 km bulk shear and CAPE >1500 j/kg are present in ND Friday aftn/eve and perhaps lingering into Saturday. Sfc trough/front moving thru as well with dew pts from the ensemble mebers showing some support (mainly from GEFS) of dew points into the low 70s E ND and RRV by 00z Sat (>55 pct chance). Not as strong of a signal of that high of dew pts form ECMWF/Canadian and NBM. But we are getting into the time of the year local crop growth will start to have an affect on dew pts and thus the higher end values may end up correct. && .AVIATION /06Z TAFS THROUGH 06Z TUESDAY/... Issued at 1158 PM CDT Sun Jun 22 2025 IFR to MVFR ceilings will be the main impact to TAF sites this afternoon into evening. Low ceilings will start to lift between 09Z - 12Z. Northwest winds 10-25kt prevail through 09Z before shifting out of the west with similar speed after 12Z. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...None. MN...None. && $$ DISCUSSION...Riddle AVIATION...CJ