Strong isentropic ascent promoted the development of scattered precipitation cores, including freezing rain and sleet, across Oklahoma on the morning of the 1st. This resulted in slick and hazardous travel conditions during the morning commute across the area.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OUN wrote it up.
Strong isentropic ascent promoted the development of scattered precipitation cores, including freezing rain and sleet, across Oklahoma on the morning of the 1st. This resulted in slick and hazardous travel conditions during the morning commute across the area.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before the first event at Dec 1, 1:08 AM CST, 2 hours 52 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Norman OK 108 AM CST Mon Dec 1 2025 ...New NEAR TERM, SHORT TERM, LONG TERM... .KEY MESSAGES... Updated at 105 AM CST Mon Dec 1 2025 - Below normal temperatures and a chance for light wintry precipitation today. Little to no accumulation is expected. - Temperatures moderate Tuesday, ahead of a cold front that will bring colder weather late Wednesday into Thursday. - There is a chance for light wintry precipitation Thursday into Thursday night. && .NEAR TERM... (Through Monday) Issued at 105 AM CST Mon Dec 1 2025 Numerous showers have developed across much of Oklahoma and north Texas this morning within a zone of isentropic ascent/warm air advection. The exception has been across far west central Oklahoma. These showers are producing a wintry mix of rain, freezing rain, and sleet/ice pellets. These showers are not producing snow because the activity is too shallow with the saturated layer beneath the dendritic snow growth zone (DGZ), which is the layer in the atmosphere where temperatures are between -12 to -18 deg C. Precipitation amounts reaching the surface have generally been a trace to a few hundredths given the light echoes and the dry boundary layer/low-levels (i.e., some of the precipitation is evaporating/sublimating before reaching the surface). Where temperatures are above freezing (generally southeast of I-44), the precipitation types are rain and sleet. Even though surface temperatures are above freezing, the sleet/ice pellets develop by water droplets freezing before reaching the surface. Near the I-44 corridor, it'll be a mix of rain, freezing rain, and sleet (i.e., freezing rain where surface temperatures are below freezing). The good news is this is not an environment that is favorable for the development of freezing drizzle given the dry low-levels. Instead, the scenario is (convective) showers. The signal among the convective-allowing models indicate this as well with a cellular structure in the precipitation. Even with the absence of freezing drizzle, there is the potential for localized slick spots on elevated surfaces where light freezing rain occurs. Across northern Oklahoma, areas of light snow will develop with ascent ahead of an approaching shortwave trough. The track of the shortwave trough is unfavorable for appreciable snowfall with the highest chance across Kansas. In addition, moisture is limited with the system. There is a 20 to 40% chance of 0.1" of snowfall accumulation near the Oklahoma/Kansas border. Therefore, a trace to only light accumulations are generally expected The system will depart this afternoon with most locations expected to rise above freezing. Mahale && .SHORT TERM... (Monday night through Wednesday night) Issued at 105 AM CST Mon Dec 1 2025 Temperatures will moderate on Tuesday as mid-level heights rise with a return to southerly winds. High temperatures Tuesday afternoon are forecast to range from the upper 40s to mid 50s deg F. The warming trend will be brief as the the next cold front will move through during the day Wednesday as a mid/upper-level trough embedded in the polar jet stream amplifies across the Great Lakes region. The amplifying trough will advance another cold front southward across the Plains with a ~1036 mb surface high in its wake. Similar to the previous cold front, the trajectory of this air mass will be from Canada. Falling temperatures are likely northwest of I-44 Wednesday afternoon with breezy northerly winds. Mahale && .LONG TERM... (Thursday through Sunday) Issued at 105 AM CST Mon Dec 1 2025 The cold front that moved through Wednesday will return us to below-normal temperatures on Thursday with highs likely in the 30s and 40s deg F. A wave in the subtropical jet stream may provide enough synoptic- scale ascent for the chance for precipitation Thursday into Thursday. However, there remains quite a bit of uncertainty on the strength of the wave and amount of precipitation. For example, the latest deterministic guidance shears out/weakens the wave substantially--which would result in a drier forecast. If there is precipitation, there is the potential for a wintry mix (depending on temperature profiles) across parts of the area. Probabilistic guidance indicates a 20 to 40% chance of 0.1" of snowfall northwest of I-44. The chance of 1" of snowfall is 10 to 20% across northwest into north central Oklahoma. By Friday and Saturday, temperatures are expected to moderate with a return to southerly winds. Another cold front is forecast to move through late Saturday into Sunday, but the air mass behind this front does not appear to be as cold as the previous two with only a glancing blow for the Southern Plains. Mahale && .AVIATION... (06Z TAFS) Issued at 1016 PM CST Sun Nov 30 2025 VFR/MVFR ceilings still expected this TAF period. Clouds are expected to decrease from west to east across the area Monday. Light/very light precipitation will be possible overnight into Monday but chances at most TAF sites is 20% or less so currently don't have a mention in most of TAFs although the best chance for sites to be affected are KSWO, KOKC, KOUN, and KDUA. The exception is KPNC where chances are slightly higher (about 30%) for -sn so have a mention in this TAF. Light rain, sleet, freezing rain, and/or snow will all be potential precip types if precipitation does occur at a TAF site. Winds will gradually shift towards the E and SE overnight. Winds will then shift again Monday. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 37 21 50 34 / 20 0 0 0 Hobart OK 43 19 53 33 / 0 0 0 0 Wichita Falls TX 44 23 55 39 / 10 0 0 0 Gage OK 38 19 54 26 / 10 0 0 0 Ponca City OK 34 18 49 28 / 30 0 0 0 Durant OK 41 25 50 33 / 20 10 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && NEAR TERM...10 SHORT TERM...10 LONG TERM....10 AVIATION...25
The national radar mosaic for the moment the first event began.
3 winter weather. Local standard time, as filed.
Freezing rain and sleet led to slick and hazardous travel across the county during the morning of the 1st. A fatal auto accident occurred on Interstate 40 around 0430 LST.
Freezing rain and sleet led to slick and hazardous travel across the county during the morning of the 1st. A fatal auto accident occurred on Interstate 44/H.E. Bailey Turnpike around 0600 LST.
Freezing rain and sleet led to slick and hazardous travel across the county during the morning of the 1st. EMSA paramedics responded to 105 traffic accidents across the county during the event time, with some resulting in injuries.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Winter Weather, Canadian | 2025-12-01 | 53 | Female | Vehicle/Towed Trailer | Indirect |
| Winter Weather, Comanche | 2025-12-01 | 21 | Female | Vehicle/Towed Trailer | Indirect |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2025Every state in 2025This day in weather historyWarnings in Oklahoma, December 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1299831, 1299833, 1306237.