Area Forecast Discussion
Issued by NWS Grand Forks, ND
Issued by NWS Grand Forks, ND
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518 FXUS63 KFGF 191958 AFDFGF Area Forecast Discussion National Weather Service Grand Forks ND 258 PM CDT Sat Oct 19 2024 .KEY MESSAGES... - The probability for hazardous weather is low through the next seven days. && .DISCUSSION... Issued at 207 PM CDT Sat Oct 19 2024 ...Synopsis... Water vapor imagery reveals a passing mid level trough moving east across south-central Canada, amid an upper jet extending out of the Pacific Northwest across the southern Canadian Provinces, and generally zonal flow aloft over the Northern Plains. At the surface, yesterday`s cold front is stalling to the west and is starting to wash itself out in the absence of appreciable mid- upper forcing aloft. Increasing pressure gradient over North Dakota is being noted as the aforementioned mid trough passes nearby, bringing gusty winds in the Devils Lake basin this afternoon. This pressure gradient will slide east over our area this evening, helping maintain a steady breeze tonight across the area and greatly limiting potential for fog in spite of mostly clear skies. Upper ridging is forecast to extend into the Northern Plains and Upper Midwest Sunday into Monday helping bring warming trend back to the region, of which are forecast to bring temperatures into the low 80s in the southern Red River Valley where low 80s. Dry air fed out of the western Dakotas into our area may overlap with gusty winds closer to the international border Sunday afternoon to bring a 30% chance of seeing near critical fire weather conditions between the US Highway 2 corridor and I-94 corridor. Ensemble guidance brings a cold front through the region Tuesday along with a chance of rain. At this time, light rain with amounts less than 0.25 inches are favored; although, there is a cluster of ensemble guidance that brings higher amounts into the 0.25 to 0.75 inch range, possibly aided by weak instability ahead of the front. After the front, temperatures return closer to average into mid next week. && .AVIATION /18Z TAFS THROUGH 18Z SUNDAY/... Issued at 125 PM CDT Sat Oct 19 2024 Impacts from lingering low stratus clouds creating IFR to MVFR conditions are forecast within Minnesota before 00Z. Lingering stratus deck will be slow to diminish this afternoon within Minnesota, with KBJI last to remain in degraded category from low CIGs. Current TAF has ceilings scattering out around 22Z, but confidence is lowered and could be plus/minus 2 hours of occurring. Winds will be out of the southwest 5-15kt this afternoon, some gusts around 20kt in North Dakota. After 00Z, winds remain steady around 10kt before increasing out of the southwest over 15kt late morning after 16Z. Marginal LLWS may develop tonight with winds markedly increasing in the 1-3 kft range to around 30kt out of the west/southwest. Very little chance of fog developing tonight/Sunday morning due to steady wind above 5kt and dry air. Clear to mostly clear skies are forecast Sunday, with gusts over 25kt possibly developing Sunday afternoon. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...None. MN...None. && $$ DISCUSSION...CJ AVIATION...CJ