


Area Forecast Discussion
Issued by NWS Hastings, NE
Issued by NWS Hastings, NE
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929 FXUS63 KGID 241149 AFDGID Area Forecast Discussion National Weather Service Hastings NE 649 AM CDT Tue Jun 24 2025 .KEY MESSAGES... - Periodic rounds of scattered thunderstorms will remain possible today through Thursday, generally favoring the late afternoon into overnight periods. - Widespread severe weather and heavy rain is not expected. However, isolated instances of marginally severe hail/wind, along with quick bursts of 1-2" of rain, will be possible. - Temperatures trend warmer, closer to seasonable levels, today through Thursday before a return to hot and mainly dry conditions for Friday and into the weekend. - The next cold front looks to arrive Sun/Sun night and bring our next chance for moisture and drop temperatures back to seasonable levels for early next week. && .DISCUSSION... Issued at 435 AM CDT Tue Jun 24 2025 Quiet conditions are in place early this morning as the area remains to the cool side of yesterday`s cold front. Cool conditions will continue through the morning hours as the area remains entrenched under widespread stratus. May also be some patchy areas of light to moderate fog over portions of south central Nebraska for a few hours around dawn thanks to T/Td spreads of 1-3 degrees and weak Erly upslope flow. While mechanical mixing will remain weak through midday, essentially max annual sun angle should help to lift and dissipate the stratus gradually this afternoon. This will coincide with the aforementioned boundary from yesterday becoming more diffuse and lifting northward as a weak warm front. Thus, no changes made to forecast highs for today (upper 70s far N, to upper 80s along/S of the state line) as should see a quick warmup as clouds thin out this afternoon. Scattered thunderstorms should redevelop at some point late this afternoon into evening, though latest hi-res guidance and HRRR trends remain mixed on details - such as exactly where, when, and coverage. Typically a northward retreating warm front in late June would raise expectations for organized severe weather...however that doesn`t appear to be the case this go- around due to weak wind shear and relatively poor lapse rates. Seasonably modest instability (CAPE of 1000-2000 J/kg) and effective deep layer shear of 20-25kt could support an isolated, marginally severe storm, or two...but organized severe risk is unlikely. Latest SPC Day 1 outlook features a Marginal Risk (level 1 of 5) for the entire forecast area to cover this potential. More probable issue, if there`s going to be one, could be periodic/scattered instances of high rain rates and locally heavy rainfall amounts. 00Z EPS puts PWATs at 1.8-2.0" after 21Z into the overnight...which is over 150 percent of normal or 2.5-3.0 standard deviations above normal. Could certainly envision localized instances of 1-2" in only 30-60 min. Fortunately, these types of rates shouldn`t be widespread or persistent...thus keeping impacts isolated. Kind of a wash, rinse, repeat for Wednesday as the AM to early aftn hrs appear mainly dry. May not be quite the amount of low clouds in the AM, so earlier start to the warmup, along with stronger Srly flow, should support warm/hot temperatures in the mid 80s to mid 90s from N to S. Similar to today, expect scattered thunderstorms to develop once again during the late afternoon and early evening hours. This round looks to favor areas W through N of the Tri-Cities, at least initially, as activity develops along a SW to NE boundary/baroclinic zone. Once again, instability is a bit modest for late June...but there are some indications for MAYBE some slightly stronger deep layer shear thanks to substantial low level veering and tail end of 25-35kt flow between 700mb and 500mb. Marginally severe hail, 60mph downburst wind gusts, and locally heavy rain will again be the primary threats with strongest core. Thunderstorms will be possible just about anywhere, though SREF calibrated severe probs are indeed slightly higher than today, and focused highest over areas along/N of Hwy 92. Models sag a weak trough/cold front into the area on Thursday, so highs should fall back into the 80s as scattered shower/storm chances continue for one more day. Still expect a period of mainly dry conditions and hotter temperatures to return Friday and persist into the weekend. Latest blend puts hottest temps on Saturday with widespread highs in the 90s - perhaps even low 100s in favored warm spots in the SW part of forecast area. There are still some sporadic low-end PoPs each day, but this appears to be tied to convection that may or may not move off the high plains during the overnight hours. A more coherent trough/surface front looks to arrive some time later on Sun into Sun night. This should drop temps back to seasonable levels and bring us next decent chance (40-50 percent) for rain. Hopefully we can spread out the multiple rain chances over the next week and give everyone some needed moisture after last weekend`s multiple-day bout of very hot and very windy conditions. && .AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/... Issued at 640 AM CDT Tue Jun 24 2025 For KGRI/KEAR Airports: Significant weather: IFR to LIFR CIGs, MVFR to IFR VSBYs for another few hours this morning. At least MVFR CIGs may return tonight. Today: GRI has recently fallen to LIFR CIGs/MVFR VSBYs, but EAR is still hanging onto IFR CIGs/VFR VSBYs. May see a slight deterioration through 13Z, then slow but steady improvement thereafter thanks to high late-June sun angle. Should return to MVFR by around midday, then mostly likely VFR mid to late afternoon. At least iso showers/storms will become possible towards late aftn (possibly scattered per some model guidance), with chances continuing through the evening. Still quite a bit of uncertainty on timing/coverage, so kept it PROB30 with this TAF package. Winds will veer from ENE this morning, to ESE/SE this afternoon, but remain fairly light at 6-9kt. Confidence: timing/coverage of storms - low, otherwise - medium to high. Tonight: At least some shower and thunderstorm chance will continue through the late evening, then more of an isolated shower chance late overnight. Again, confidence way too low to go anything more than PROB30s attm. CIGs are also a bit uncertain. Gut feeling is that MVFR CIGs could return towards midnight, but some guidance is earlier, and some keep VFR. Latest NBM gives only 20-25% chance for IFR CIGs, but worth keeping an eye on. Am not expecting VSBY issues from fog given steady Srly winds around 7-11kt. && .GID WATCHES/WARNINGS/ADVISORIES... NE...None. KS...None. && $$ DISCUSSION...Thies AVIATION...Thies