Area Forecast Discussion
Issued by NWS Goodland, KS
Issued by NWS Goodland, KS
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564 FXUS63 KGLD 160429 AFDGLD Area Forecast Discussion National Weather Service Goodland KS 1029 PM MDT Sat Jun 15 2024 .KEY MESSAGES... - A few thunderstorms may develop over portions of the area Sunday afternoon, mainly along and north of Interstate 70. An isolated severe storm capable of producing quarter size hail and wind gusts up to 65 mph is possible, should storms develop. - Temperatures approaching or exceeding 100 degrees are expected across the majority of the Tri-State area on Sunday. Heat indices approaching 105 degrees are possible along and east of Highway 283. - Cooler temperatures expected mid-next week. && .SHORT TERM /THROUGH SUNDAY NIGHT/... Issued at 150 PM MDT Sat Jun 15 2024 Across the region this afternoon, skies are mostly sunny to sunny, with some scattered cloud cover persisting ahead of a surface trough which is currently sitting over the Highway 27 corridor. Temperatures as of 100 PM MDT are ranging in the 80s with winds southerly gusting to 20-30 mph at times in the east ahead of the trough. Along and behind it, light/variable transitions to west-northwest flow. Scattered showers and thunderstorms are the main wx concerns this weekend in the short term, with some potential for some convection to become strong or severe. For the rest of the afternoon hrs into tonight, the first area around the 22z-00z timeframe for a 15-20% chance of a few storms developing will be in the small marginal risk area in the E/SE. This activity will hinge on the speed and positioning of the aforementioned surface trough which currently sits over the western CWA, along with the upper trough which is slowly moving through the CWA. Latest CAMs do support best initiation east and southeast of the CWA, but will keep a chance in there for a couple hours before the activity shifts east. For the evening hours, the focus shifts to the west-northwest where isolated/scattered convection is already forming ahead of a cold front in the central Rockies. CAMs are showing activity increasing towards 22z as it approaches the western portions of our northeast Colorado counties. Instability does drop off some as convection crosses the Colorado border, with soundings showing best threat to be winds as DCape peaks in the 1600-1800j/kg range around the 21z- 00z timeframe. Convection begins to fall apart from 00z-06z Sunday and will continue previous shift`s thinking of lowering pops slightly through 06z as any remaining activity dissipates by 12z Sunday. Dry air at the surface should preclude any large hail factors, but small hail can`t be ruled out. Going into Sunday, the front that settles south into the area tonight will stall over the region during the day. Southerly flow at the surface with W/SW flow aloft will create another hot day area- wide. The stalled front will have rw/trw initiating by late afternoon into the early evening hours. The Marginal risk for severe has been expanded to most of the CWA. Wind and hail threats are present with any storms that develop as DCape values around 1800- 2000j/kg and SBCape around 1700j/kg. PW values in KS/NE where best convective chances are will increase to an inch plus, throwing in heavy rainfall potential into the threat mix. Precip expected through 06z Monday before tapering off. Strong southerly flow remains overnight, so no big drops for lows expected compared to the last couple nights. For temps, looking for above normal highs on Sunday with a range in the upper 90s to low 100s. Some locales may be close to tying or even breaking records. Please refer to the Climate section below for area records on this date. With the airmass being dry, looking for heat indices to peak at or below forecasted highs. Overnight lows for tonight will range in the 60s, with warmest areas along/east of Highway 25. For Sunday night, 60s along and west of Highway 27. East of there, upper 60s to mid 70s, warmest along and east of Highway 83. && .LONG TERM /MONDAY THROUGH SATURDAY/... Issued at 223 AM MDT Sat Jun 15 2024 For the extended period, both the GFS and ECMWF show broad upper ridging over the eastern portions of the country that will give a southwesterly flow aloft for much of the week, before going more zonal to end the week. There will be a couple of shortwaves that will transition across the northern/western periphery of the ridge, especially from Tuesday onward. At the surface through midweek, a front pushing into the region will settle over the KS area, providing a focus for increased moisture and chances(60-70%) for convection, especially Tue-Wed nights. The latter portion of the week will see the front lift north giving way to hotter conditions and decreased chance for precip, with the focus north of the Interstate. Besides the chances for storms, the southerly gradient over the region Mon-Mon evening will be tight with the potential to see gusts into the 30-40 mph range. Thursday is similar, but closer to the 25- 35 mph range. Also, with the threat for storms bringing about hail/wind concerns, increased to steady PW values through the upcoming week are going to peak from 1-1.50". With the surface low associated with the front moving along the Colorado border, highest PW values will be east into Kansas. For temps, highs on Monday in the mid to upper 90s will give way to mainly 80s for Tuesday and 70s on Wednesday due to increased chances for clouds/precip. Highs expected to increase from there with 80s on Thursday giving way to 90s again for the end of next week. Overnight lows in the 60s and 70s for Monday night will give way to mainly 50s for Tuesday and Wednesday nights, with 60s returning thereafter. && .AVIATION /06Z TAFS THROUGH 06Z MONDAY/... Issued at 1025 PM MDT Sat Jun 15 2024 GLD: VFR conditions will prevail through the TAF period. Aside from cirrus associated with decaying convection /convective remnants/ this evening, clear skies will otherwise prevail. Aside from gusty/erratic winds (~15G25KT) associated with lingering convective outflow this evening, winds will otherwise remain light/variable through sunrise.. shifting to the south at 10-15 knots late Sunday morning and increasing to 15-20 knots Sunday afternoon. MCK: VFR conditions will prevail through the TAF period. Aside from cirrus associated with decaying convection /convective remnants/ this evening, clear skies will otherwise prevail. Aside from gusty/erratic winds (~15G25KT) associated with lingering convective outflow this evening, winds will otherwise remain light/variable through early Sunday afternoon.. shifting to the south and increasing to 15-25 knots during the mid-late afternoon. && .CLIMATE... Issued at 150 PM MDT Sat Jun 15 2024 Near-record to record high temperatures are expected across portions of the area on Sunday June 16. High temperature records for the date (June 16) are listed below. Location Record (F) Goodland KS 101 in 2021+ McCook NE 107 in 1946 Hill City KS 112 in 1946 Burlington CO 103 in 1952 Colby KS 107 in 1946 Tribune KS 103 in 1946 Yuma CO 98 in 1995 A (+) denotes a record set on multiple years. && .GLD WATCHES/WARNINGS/ADVISORIES... KS...None. CO...None. NE...None. && $$ SHORT TERM...JN LONG TERM...JN AVIATION...Vincent CLIMATE...JN