158 FXUS63 KGLD 252332 AFDGLDArea Forecast Discussion National Weather Service Goodland KS 532 PM MDT Thu Sep 25 2025
.KEY MESSAGES...
- Slightly above normal temperatures (upper 70s to mid 80s) and dry conditions are forecast through the weekend.
- Gusty south winds of 30-45 mph return Sunday and Monday.
- There is a 10 to 20 percent chance of thunderstorms returning early next work week.
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.SHORT TERM /THROUGH FRIDAY/... Issued at 1252 PM MDT Thu Sep 25 2025
Under the influence of upper level ridging, the dry and cloudless conditions observed this afternoon will continue through the remainder of the day. Overnight, heights will lower as the ridge shifts east and an elongated, positively-tilted trough approaches. While the lack of clouds will make for efficient radiational cooling conditions and hence a stout nocturnal temperature inversion, deterministic guidance suggests an increasing surface pressure gradient which (in theory) should be sufficient to maintain at least some wind (HREF mean 5-8 mph) all night; given the southwesterly (downslope) direction, this should limit fog potential with NBM/HREF probabilities less than 10%. The lack of clouds and fog will allow surface temperatures to, like last night, sink like a rock with forecast lows in the mid to upper 40s area-wide.
Deterministic and ensemble guidance advertises 850mb temps climb a couple degrees tomorrow, into the 22-24 degC range (up from 19-21 degC today), suggesting it`ll be a couple degrees warmer; our forecast features highs in the low to mid 80s. Tomorrow night, a cold front will drop south out of Nebraska, bringing a wind shift and perhaps some breezier conditions with various CAMs highlighting gusts to 20-25 mph from the north- northeast. That should be the only sign of the frontal passage, however, as moisture return (off the Pacific) ahead of the front will be quite scarce.
As an upper level ridge nudges into the Great Basin and erodes a section of our positively tilted trough, a cut off low will develop in the Southwest tomorrow night into Saturday, leaving our area in the tranquil col area Saturday into Saturday night. With some cooling of temperatures aloft, this will result in slightly less warm conditions, mainly across our northwest counties (in the tri-state area) where forecast highs are in the mid to upper 70s.
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.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/... Issued at 1252 PM MDT Thu Sep 25 2025
As that upper high shifts east, the pattern becomes increasingly amplified, with strengthening diffluent south- southwesterly flow emerging across the Southwest and High Plains. The aforementioned cut-off low will get swept up by these southwesterlies aloft, and consequently a pair of disturbances will lift across the region, sparking low chances for precipitation Sunday night and again Monday night into Tuesday. Confidence in any severe weather remains low at this time, with limited moisture return being the limiting factor. A tightening pressure gradient between the surface high slowly shifting east and one/more lee cyclones developing across central- eastern CO will also favor seasonably breezy conditions Sunday through Tuesday. While the magnitude of those southerly winds each afternoon will be a function of mixing depth (itself a function of dryline placement), the National Blend of Models (NBM) suggests the highest confidence in gusts over 40 mph (60-80% chance) will be Monday west of an Oberlin to Colby to Russell Springs line. We`ll have to carefully watch the timing of any fronts to assess potential for blowing dust, as steep 0-2km lapse rates in their wake and strong top of channel winds (35-40 kt at 850mb) could promote at least some low end potential. Forecast high temperatures range from the low to mid 80s each day, though one wouldn`t be surprised if Sunday winds up a little warmer (and windier) than forecast should mixing be deeper than expected, as LREF mean brings 850mb temps into the 23-24 degC range.
As global deterministic and ensemble guidance diverges mid to late next week, confidence in the appreciable weather decreases. However, for what it`s worth, NBM yields generally sub mentionable (i.e., less than 15%) chances for precipitation Wednesday and beyond, with temperatures trending near normal in the upper 70s to mid 80s.
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.AVIATION /00Z TAFS THROUGH 00Z SATURDAY/... Issued at 532 PM MDT Thu Sep 25 2025
Winds will generally back southerly as they diminish before 26.02Z. There is a 10 percent chance of patchy fog developing overnight at MCK which may reduce visibility to MVFR. At GLD the risk of MVFR or lower visibility is less than 5 percent. Winds will remain southerly for Friday and will strengthen by mid- morning to around 10 to 15 knots.
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.GLD WATCHES/WARNINGS/ADVISORIES... KS...None. CO...None. NE...None.
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SHORT TERM...Bumgardner LONG TERM...Bumgardner AVIATION...Huyck
NWS GLD Office Area Forecast Discussion