textproduct: North Platte

KEY MESSAGES

- Near-critical to critical fire weather conditions are again likely for much of central and western Nebraska on Tuesday with a Red Flag Warning in place for Fire Weather Zone 209.

- Fire weather concerns are expected to persist at least Wednesday and Thursday for portions of the area, with gusty winds and low humidity expected both days.

- Temperatures remain well above average into the weekend, with highs in the 80s each day, and potential to see lower 90s.

- Chances of showers and thunderstorms increase this weekend as a system tracks across the northern Plains.

SHORT TERM /THROUGH WEDNESDAY NIGHT/

Issued at 222 AM CDT Tue May 12 2026

Early this morning, mid-level clouds continued to stream west to east across the area. At the surface, a Pacific frontal boundary was bisecting the area from the north. This was denoted by a flip to northerly winds with slight upticks in speed. Outside of this, no significant airmass change is expected. This will help limit humidity recovery as persistent low-level winds will promote mixing. Maximum humidity levels will likely only reach the 40-60% range and with the abrupt wind shift with the front, fire weather concerns will continue through the overnight hours.

Tuesday/Tuesday Night...a Red Flag Warning is in place for portions of central Nebraska. Details pertaining to this can be found below in the fire weather discussion below. Surface frontal boundary should clear the area to the south by late morning. Persistent northerly winds will dominate the daytime hours as surface high pressure noses in from the northwest. Temperatures at h85 will fall to the 14-18C range, down from the middle 20s on Monday. This will result in more seasonable temperatures locally with highs in the middle 70s to lower 80s north to south. With stronger winds off the surface and pressure rises through the day, northerly winds will remain strong. Gusts around 25 to 35 mph are possible. The stronger 35 mph gusts will likely be sporadic and favor north central Nebraska where stronger h7 flow resides. Though this belt of stronger winds will reside above the mixed boundary layer, a few of these stronger gusts should still manage to reach the surface. As central high pressure settles into eastern Nebraska in the evening, a reasonable radiational cooling setup will materialize. Given ample dry air in place, fog potential appears to be low, and low temperatures will only fall into the lower 40s.

Wednesday/Wednesday Night...high pressure should exit the area by late morning with return southerly flow becoming reestablished over western Nebraska. This will draw richer low-level moisture north, initially along the Front Range but eventually extending east into the Nebraska Panhandle and Sandhills. This southerly flow will also lead to warm air advection and a return to above normal temperatures. Highs should reach the upper 70s to upper 80s, warmest in the west. Gusty south winds with the increasingly warm temperatures will again promote some fire weather concerns, with details below in the fire weather discussion. In the evening, as moisture continues to increase across the high terrain, scattered showers with a few thunderstorms should develop near the I-25 corridor as a weak disturbance rounds the top of shortwave ridging. Instability will largely be confined to areas west of Highway 385 and so activity is likely to remain west of the local area. This is supported by NBM90 QPF which maintains dry conditions for our western zones with similar suggestion from deterministic solutions as well as SREF probabilities. Strengthening LLJ will promote breezy overnight winds. This will keep lows on the mild side with many locations holding in the lower 50s but more wind prone areas, particularly higher elevation areas such as the Pine Ridge, may manage to hold in the upper 50s to lower 60s.

LONG TERM /THURSDAY THROUGH MONDAY/

Issued at 222 AM CDT Tue May 12 2026

As southerly flow continues Thursday morning, expecting to see rising dewpoints across portions of the forecast region, as has been suggested by guidance for the last several days. Agreement continues to build into model solutions, indicating higher dewpoints into the 50s across eastern portions of the forecast area, with lower dewpoints in the 30s across western Nebraska. This will help form a dry line across western Nebraska, generally somewhere between Highways 61 and 83. To the east of the dry line, expecting that humidity values remain above fire weather thresholds, so expect a lesser threat Thursday afternoon. West of the dry line, though, warm and dry downslope flow is expected, with potential for gusty westerly winds across the Panhandle and western Sandhills. With the lack of moisture extending into far western Nebraska, expecting very low humidity values as the dry line tracks east, with afternoon humidity in the 10 to 15 percent range. On top of that, will continue to see well above average temperatures across the forecast region, with highs in the mid 80s to lower 90s. Given this set up, at least elevated to near critical fire weather conditions look possible across western Nebraska Thursday afternoon, but will continue to monitor in the next few forecast cycles to determine confidence in hitting critical thresholds.

As for precipitation along the dry line, while moisture certainly appears available, there is some question on whether the cap will break along the dry line. Forecast soundings indicate strong capping across the region, which may inhibit convection. However, there may be a few hours with a weaker cap, allowing a few cells to form. Given the low confidence, will keep PoPs at a slight chance for now. For what its worth, any expected precipitation Thursday evening into the night appear quite light, generally a few hundredths at best. As the Gulf moisture is pushed out of the region along the dry line, high pressure builds in Thursday night into Friday morning. Will again see above average temperatures Friday, with highs generally in the mid 80s to lower 90s. Again, relative humidity is expected to remain quite low, generally around 10 to 20 percent across the region. However, with the high pressure building across the region, winds look to be lighter on Friday, which may limit fire weather concerns on Friday.

Saturday, an upper level trough tracks across Montana, bringing a surface low across the Dakotas. As this system tracks across the northern Plains, it brings a cold front across the region Saturday evening. Ahead of this front, temperatures again climb well above seasonal, with highs staying in the upper 80s to lower 90s. Again, expect low humidity across the region, with potential for gusty winds. However, given the timing of the front remains somewhat less certain, not highly confident in how much overlap there will be of gusty winds and low humidity. As the low approaches, though, expect to see increasing chances for showers and thunderstorms to develop across portions of the region. For Sunday, the trough is expected to deepen, keeping continued chances of showers and thunderstorms across the region. Ensemble guidance continues to suggest this as our best chances for precipitation in the near term, outside of a few weakly forced showers.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 628 AM CDT Tue May 12 2026

VFR conditions are expected to prevail across western and north central Nebraska today and tonight. Gusty northerly winds have already started across the region, with gusty winds lasting throughout the day and into the evening. By the evening, as a low level inversion develops, winds begin to decrease to mostly light and variable. A few mid level clouds are expected this morning across northern Nebraska, with mostly clear skies throughout the day and tonight.

FIRE WEATHER

Issued at 222 AM CDT Tue May 12 2026

Tuesday...near-critical to critical fire weather conditions are again likely for much of western and central Nebraska. A Red Flag Warning is in effect for Fire Weather Zone 209, with lower confidence in seeing critical conditions elsewhere precluding more widespread headlines. Frontal boundary settling south through western Nebraska early Tuesday morning should clear the area by late morning. Winds will remain strong through the day with gusts in the 25 to 35 mph range, strongest across north central Nebraska where NBM highlights 80%+ probabilities for exceeding 22 knot (25 mph) gusts. Limiting overall concern today will be afternoon humidity minimums. Surface high pressure will approach the area by late afternoon. Median values from NBM guidance suggest widespread 20-25% humidity values with more aggressive outputs struggling to pain much coverage of 20% or less. Similarly, HREF only shows around a 50/50 signal for seeing 20% or less humidity, mainly over southern Zone 206 and Zone 219. This falls short of the criteria (15%) for these zones but far southern Zone 209, with the higher criteria (20%), will likely reach this threshold thus the headline limited to this one zone. A hindcast look shows the Sunday afternoon RAP run handled Monday's humidity forecast fairly well. A look at Monday afternoon's RAP run for Tuesday shows only southern Zone 209 hitting criteria with all other locations remaining above. Because of this and little to no signal in HREF joint RH/wind probabilities, no expansion of headlines is expected locally. Even while falling short of true RFW criteria for Zones 206, 208, and 219, the expected gusty winds and humidity in the 15-20% range will lead to near-critical conditions. Weaker winds further west in Zones 204 and 210 should keep things closer to elevated. Winds will gradually subside by late afternoon/early evening with modest humidity recovery around 65-75%.

Wednesday...behind departing high pressure, southerly flow will become established across western Nebraska. This will support warming temperatures as thermal ridging settles over the Front Range. Afternoon highs will climb to the upper 70s east to upper 80s west, or about 10-20F above normal for mid-May. Gusty south winds will develop over our western zones and combined with the warmer temperatures should allow humidity to drop into the 15-25% range. Winds will be strongest west of Highway 83, with a fairly sharp west to east gradient in expected gusts. NBM shows this well with 70-90% probabilities of seeing 34 knot (~39 mph) or greater gusts with a quick decrease to less than 50% for most locations to the east. Southerly winds will also promote some modest moisture advection, which should offset diurnal mixing and keep humidity from reaching critical levels. At this time, will continue to highlight near- critical conditions largely due to the expected wind gusts. Should forecast humidity levels fall at all, do believe headlines may need consideration with later forecasts.

LBF WATCHES/WARNINGS/ADVISORIES

Red Flag Warning from noon today to 9 PM CDT this evening for NEZ209.