textproduct: Goodland

KEY MESSAGES

- A Dense Fog Advisory is in effect for Eastern Colorado and Northwest Kansas through the morning hours.

- Breezy to strong NNW winds may develop in the wake of a cold frontal passage Tuesday morning. Sustained winds around 20-35 mph and gusts of 30-50 mph are forecast. There is the possibility that gusts could reach 60-65 mph.

- Near normal temperatures expected around Thanksgiving.

- An Arctic cold front will bring colder temperatures and the potential for snow to the region this weekend and early next week.

SHORT TERM /THROUGH TUESDAY NIGHT/

Issued at 153 AM MST Mon Nov 24 2025

Current observations show a broad surface low extending from near the Tri-State border, all the way down to the Panhandles region. Because of this, precipitation has spent most of the early night hours wrapping around the outside of the area. However, some convergence zones are developing along the Colorado border, developing some showers. A few storms are also trying to form closer to Central Kansas where some MUCAPE and mid-level lapse rates around 7.5 are on the leading edge of the low. The overall chances of seeing a lightning strike are very low, but not zero. Meanwhile, fog is developing where low-level moisture is converging and being forced slightly upslope, namely along I-70 during the early morning hours. This is extending into more of the area as more moisture is pushed, so a Dense Fog Advisory is in effect for Eastern Colorado and Northwest Kansas. An extension may be needed into Southwest Nebraska as the low begins to shift east and move the area of moisture convergence.

For most of the morning hours, drizzly and foggy skies are forecast to persist. A few showers should move through the area on western side of the surface low as it pushes east. By noon, most of the precipitation should be over as the mid-level moisture pushes out. However, the fog and drizzle could continue until the early evening hours as the high concentration of low level moisture is forecast to take awhile to clear out. With this, temperatures should remain fairly steady in the 40s and low 50s. Counties along the Colorado border may warm more into the mid 50s as the cloud cover and fog may clear by the early afternoon for these areas.

Tonight, the moisture should clear the area and allow for clearer skies. Meanwhile, an upper level trough is forecast to move through the Plains and bring a cold front through the area later in the night. So for the start of the evening and night, temperatures should lower into the 30s with clear skies and relatively calm winds. After the front passes, temperatures will likely warm up a few degrees due to the mixing and winds should increase to around 10- 20 mph.

With the frontal passage, Tuesday is forecast to be colder and windier. Temperatures are forecast to cap out in the low to mid 40s as cold air moves in behind the front. Winds are forecast to increase early in the morning to around 20-35 mph. Wind gusts are forecast to mainly be in 30-50 mph range. That being said, some gusts to 60 and maybe even 65 mph are possible as guidance is suggesting winds in the 850mb-700mb layer could reach 45-55 kts. This seems reasonable as ensembles have been hinting at a deeper/stronger trough that pushes a little more east and puts us in the stronger height gradient. The main issue is how much will we actually tap into the stronger flow with the early front passage.

Tuesday night, winds should lower fairly quickly as the front pushes farther away and the inversion sets up. Temperatures are forecast to dip into the teens with the cold air mass squarely over the area and with the lighter winds. Temperatures may be able to stay in the twenties if some higher level cloud cover can move in ahead of a smaller shortwave before we get too late into the night and cool off.

LONG TERM /WEDNESDAY THROUGH SUNDAY/

Issued at 141 AM MST Mon Nov 24 2025

Wednesday we will be under northwesterly flow as the early week low moves towards the Great Lakes as a ridge pushes in from the west. This should keep Wednesday through Friday pretty mild. Temperatures will warm into the 40s Wednesday and 40s to mid 50s Thursday. For Thanksgiving, the southwestern CWA will be the warmest. Overnight, temperatures will cool into the low to mid 20s.

Friday night, the CMC-NH and ECMWF are showing a shortwave trough moving across the Great Plains. This will have a 20-25% chance of producing some precipitation, likely snow, and could lower temperatures.

Sometime between Saturday night and Wednesday, our next strong low will impact the region. With it being 7 days out and multiple systems occurring ahead of it, there is a lot of uncertainty. However, we are expecting northwesterly winds, colder temperatures, and precipitation, very likely snow. There is an outside (<5%) chance this system could produce blowing snow, heavily impacting visibility and travel. There is also a 15-30% chance temperatures will drop below 10 degrees during this system, with the coolest temperatures being in the northwestern CWA.

Since there is such uncertainty in the timing of the second system, and uncertainty if the Friday night shortwave will even occur, NBM PoPs give a chance of rain starting Friday night through next Monday. The more impactful system/precipitation is expected to occur sometime between Sunday and Tuesday.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 435 AM MST Mon Nov 24 2025

For KGLD... Fog with visibility around 1/4 to 1SM has been observed for the past few hours with ceilings around 200-300ft. This is forecast to continue for the first few hours of the period, with the possibility that a small shower or pocket of drizzle may briefly improve conditions. Otherwise, as temperatures slowly warm, the fog should dissipate around 15-17Z. Ceilings should also improve late in the morning and conditions become VFR around 21Z as the cloud cover pushes east with the low. Mild conditions are briefly forecast, before a cold front moves through around 06Z. Winds will then strengthen to around 10-20 kts at the surface. Low level wind shear is also forecast to develop with speeds of 40-50 kts around 200-500ft.

For KMCK... Recent observations have shown ceilings slowly lowering. Still expecting ceilings to lower to around 500ft between 12-16Z. Fog has tried to form, but so far has been unsuccessful. That being said, surrounding sites are beginning to show fog developing, so I am still expecting some fog with visibility around 3SM to form. It should be short lived as slow increases in temperatures should have it burn off during the morning. Ceilings should remain around 500-1500ft for most of the day as the low level moisture will be slow to move off with the low to the east. A brief period of calm conditions is forecast shortly after 00Z, before a cold front moves in from the north. Winds will then strengthen to around 10-20 kts at the surface. Low level wind shear is also forecast to develop with speeds of 40-50 kts around 200-500ft.

GLD WATCHES/WARNINGS/ADVISORIES

KS...Dense Fog Advisory until 10 AM MST /11 AM CST/ this morning for KSZ001>004-013>016-027>029-041-042. CO...Dense Fog Advisory until 10 AM MST this morning for COZ090>092. NE...None.