textproduct: Norman

KEY MESSAGES

Updated at 1246 AM CST Sat Dec 6 2025

- Areas of dense fog are likely and freezing fog is possible through Saturday morning, mainly along and east of the I-44 corridor. A Dense Fog Advisory is in effect until 10 AM Saturday.

- Areas of dense fog may return again Saturday night into Sunday morning ahead of the cold front.

- Cooler day on Sunday behind a front before dry and seasonable weather into next week.

NEAR TERM

(Through Saturday) Issued at 1246 AM CST Sat Dec 6 2025

Areas of dense fog are expected to develop this morning with the highest confidence east of the I-44 corridor. Patchy fog, some dense, will also be possible west and north of I-44 with lower confidence. A Dense Fog Advisory remains in effect through 10 AM Saturday across portions of central Oklahoma with visibility of a quarter mile or less probable. Generally where the dense fog is expected, temperatures will hover at or above freezing. However, there is a chance for some freezing fog to develop through the early morning hours near the I-44 corridor with some slick roadways possible.

A majority of the fog will begin to dissipate through mid-morning, however there is a potential for pockets of dense fog to linger through the early afternoon hours across southeast Oklahoma. Mostly clear skies and breezy southerly winds across western Oklahoma and western north Texas will bring WAA and near-normal temperatures in the upper 50s to lower 60s this afternoon. Temperatures will be slightly cooler across central and southeast Oklahoma (mid-50s) as the fog slowly clears out today. A few models suggest the low clouds linger through the entire day which could limit heating through the afternoon hours and result in cooler high temperatures, potentially not even warming out of the 40s. Thus, high temperatures today have been lowered from the NBM to account for this increasing potential.

SHORT TERM

(Saturday night through Monday night) Issued at 1246 AM CST Sat Dec 6 2025

Models are trending towards a return of fog across southeast Oklahoma after midnight, but the dry cold front will sweep southward and erode any fog development by around sunrise which is when the front will be completely through the state of Oklahoma. There will be a slight delay in the colder air with fairly mild temperatures for this time of year by Sunday morning. However some breezy north post-frontal winds could make for a brisk morning. As the front continues to push southward into central Texas Sunday, breezy north winds will continue with gusts up to 20 to 25 mph possible. Temperatures will be nearly 5-10 degrees colder than Saturday making for a chilly end to the weekend. The surface high will continue dig southward into Oklahoma Sunday night with widespread below freezing temperatures. Drier air behind the front should also mitigate any fog development.

LONG TERM

(Tuesday through Friday) Issued at 1246 AM CST Sat Dec 6 2025

Cooler temperatures will linger into Monday before a warming trend the remainder of the week with above seasonable temperatures. A brief weak backdoor cold front will move through Wednesday, but most of the colder airmass will keep northeast of the forecast area as the upper jet associated with the system slides across the Central Plains and into the Ohio Valley, taking much of the colder air with it. In the wake of that shortwave will be a stronger longwave trough embedded in the northwesterly flow aloft that will dig much colder air into the CONUS. Ensemble spread of temperatures increases for Friday highs with temperatures ranging from the lower 30s to upper 40s. Cluster analysis is about a 50/50 split towards the 25th and 75th percentile temperatures. These temperature spreads will continue to be monitored through the week.

AVIATION

(06Z TAFS) Issued at 1032 PM CST Fri Dec 5 2025

Some areas of fog have begun to develop across the south and southeast but the models are delaying the development of the dense fog and associated LIFR conditions until after 08Z-09Z and then toward the I-44 corridor until around sunrise. The moist layer is also very shallow and this may lead to a quick dissipation of the fog in the mid/late morning time frame, with VFR conditions returning. Winds will be light overnight and through the morning before increasing with deeper mixing by afternoon, especially across the west. A cold front will northwest Oklahoma late in the forecast.

PRELIMINARY POINT TEMPS/POPS

Oklahoma City OK 51 35 43 23 / 0 0 0 0 Hobart OK 56 34 49 22 / 0 0 0 0 Wichita Falls TX 58 38 53 25 / 0 0 0 0 Gage OK 58 29 45 22 / 0 0 0 0 Ponca City OK 54 31 42 21 / 0 0 0 0 Durant OK 55 41 53 27 / 0 0 0 0

OUN WATCHES/WARNINGS/ADVISORIES

OK...Dense Fog Advisory until 10 AM CST this morning for OKZ008-013- 019-020-023>032-037>048-050>052.

TX...Dense Fog Advisory until 10 AM CST this morning for TXZ086-089- 090.