Area Forecast Discussion
Issued by NWS Grand Forks, ND
Issued by NWS Grand Forks, ND
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943 FXUS63 KFGF 071940 AFDFGF Area Forecast Discussion National Weather Service Grand Forks ND 240 PM CDT Fri Jun 7 2024 .KEY MESSAGES... - Scattered showers to spread southeastward across the area this evening tapering off by late tonight. - More widespread storm chances return to the area late Monday into Monday night. Predictability is low for impacts && .DISCUSSION... Issued at 240 PM CDT Fri Jun 7 2024 ...Synopsis... Northwest flow pattern remains in place across the area with a shortwave trough dropping southeastward through the area from Saskatchewan tonight. This weak wave is slightly deepening/strengthening as it drops southeast with mainly mid level moisture present. Therefore some uncertainty into how much rain will reach the ground with the area of showers. However as the wave strengthens, expect more intense showers to develop with ok moisture advection present into the area by this evening. Therefore have increasing pops and confidence in showers into the evening hours across the central/southern portions of the forecast area this evening into the overnight hours. Little to no instability present, so left out any mention of thunder at this time. Large complex of low pressure area situated to the northwest and far northeast remains to the north with the northwest flow pattern into the weekend. A slow wobble to the south Saturday with another shortwave rotating around the western upper low to eject southeastward across the area Saturday. Again could see some additional isolated to scattered shower development in the afternoon hours. Some instability present with this wave, so an isolated thunderstorm cannot be ruled out in the northeast/east. As that upper low continues to wobble southward it will merge with another area of low pressure moving ashore in the Pacific NW/Northern Rockies. This will start to develop more of a SW upper flow pattern across the area into early next week. This will bring in increasing low level moisture, return flow and a warm front lifting north across the area late Monday into Monday night. Overrunning may lead to some initial showers, with chances for more widespread showers/storms as the warm front lifts northward. Uncertainty in timing/strength of moisture return and warm frontal progress will determine the overall threat for storms and the predictability for strong to severe storms/impacts, etc. More of an active zonal flow pattern then sets up through the remainder of the week with overall low predictability in overall precipitation/storm chances. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 151 PM CDT Fri Jun 7 2024 VFR conditions expected through the period with increasing mid clouds this evening and clearing skies into Saturday morning. An area of showers to move southeastward through the area mainly this evening and tried to time best chances for showers at all terminal sites with the tempo groups. Might see a brief MVFR CIG or VSBY with the strongest showers, but overall expect mainly lower VFR CIGS with any showers, and VSBYS above 6SM. Some uncertainty in how much rain will reach the ground in spots, and intensity of the showers with the best chances for a stronger shower at KFAR and KBJI. Northwesterly winds becoming more westerly to southwesterly into Saturday. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...None. MN...None. && $$ DISCUSSION...MJB AVIATION...MJB