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Area Forecast Discussion
Issued by NWS Hastings, NE
Issued by NWS Hastings, NE
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532 FXUS63 KGID 201146 AFDGID Area Forecast Discussion National Weather Service Hastings NE 646 AM CDT Sat Jul 20 2024 .KEY MESSAGES... - Patchy dense fog will be possible mainly northwest of the Nebraska Tri-Cities through around 9 AM this morning. - Periodic small chances (10-40%) for mostly non-severe thunderstorms will be possible across the local area through Tuesday of next week. Temperatures will also remain below normal through at least Tuesday (70s to mid 80s). - Warmer temperatures (80s to lower 90s) and dry weather are anticipated for the latter half of next week. && .DISCUSSION... Issued at 329 AM CDT Sat Jul 20 2024 A cluster of non-severe thunderstorms has slowly pushed south across much of the local area overnight. While there were some gusty winds in a few spots (less than 50 mph), most of the area has just received between 0.25 and 1.00 inch of beneficial rainfall. As of 4 AM, the remainder of this precipitation can be seen rotating around a developing mesoscale convective vortex (MCV) near the radar, with little to no lightning left across the local area. Expect this MCV to continue to push east southeast through the morning hours, with mostly dry weather in its wake. On satellite this morning, can also see the development and expansion of low clouds north of the departing system, and already have a couple areas with low ceilings and some fog across the region. While the worst of this fog is north of Highway 92, could see some light BR reach the Tri-cities over the next hour or two, although it is not expected to linger much past sunrise per latest model data. As a result, added some fog to the forecast as well as the wording for some patchy dense fog to the HWO through 9 AM CDT. Later today, a few breaks in cloud cover could allow for some shallow CU development and a few light showers or thunderstorms during the afternoon hours, diminishing during the early evening. While there are small pops in the forecast to cover this, most areas will likely remain dry this afternoon/evening. Thereafter...continued off and on small chances for thunderstorms are expected in the amplified upper level pattern which will steer continued cooler than normal air and a few weak disturbances across the region in northerly flow. This pattern is expected to shift around mid-week when the upper level ridge across the intermountain west shift eastwards resulting in rising heights aloft (warmer temps) and significantly reduced chances for precipitation starting next Wednesday and continuing into at least next weekend. && .AVIATION /12Z TAFS THROUGH 12Z SUNDAY/... Issued at 627 AM CDT Sat Jul 20 2024 For KGRI/KEAR Airports: IFR/LIFR CIGS has settled in across the area this morning with occasionally reduced visibilities at both terminals down to 1-2SM. Expect these lower CIGS and VSBY to persist through around 20/15Z...with CIGS then improving to MVFR levels and VSBYS becoming VFR. For this afternoon, expect prevailing VFR conditions to return, and as some breaks in the cloud cover are observed, some CU could develop with an isolated -SHRA or -TSRA possible into the early evening hours. PROBS of this are quite low (10-15%), so did not include a mention in 12Z TAFS, but will continue to monitor in case a -SHRA or -TSRA encroaches on either terminal later today. With light winds and elevated dewpoints again tonight, expect a potential repeat of IFR/LIFR stratus and some fog, so introduces some lower CIGS/VSBYs again aft 21/08Z. && .GID WATCHES/WARNINGS/ADVISORIES... NE...None. KS...None. && $$ DISCUSSION...Rossi AVIATION...Rossi