textproduct: Norman

KEY MESSAGES

Updated at 1206 AM CDT Tue May 19 2026

- Cool, below normal temperatures today through Thursday. Near normal temperatures will return by the end of the week through early next week.

- Shower and storm chances continue Wednesday through early next week. A few strong storms may be possible.

NEAR TERM

(Through Tuesday) Issued at 1206 AM CDT Tue May 19 2026

A cold front is expected to push southward through Oklahoma overnight into Tuesday morning. Storms have already developed along the front in south central Kansas and will continue to build westward along the boundary into northern Oklahoma through the early morning hours. Storms will be capable of producing large hail and damaging winds as the primary hazards. Depending on the evolution/speed of the frontal boundary, there is a chance a few embedded circulations could occur and therefore a tornado or two cannot be ruled out. Chances remain very low, but not zero for a tornado to occur. As the front progresses southward through Tuesday morning, the threat for severe weather may decrease with flooding, along with gusty winds and small hail becoming the primary hazards.

The cold front should be through the forecast area by late Tuesday morning with most of the shower and storm activity ending by the early afternoon hours. However, if they front slows down and/or stalls, there is a chance that a few strong to severe updrafts could develop if temperatures have a chance to warm ahead of the line. Based on current trends, there is a lower chance for this slower front solution.

Following the front, temperatures will be nearly 20-25 degrees cooler than yesterday with highs in the 60s to 70s.

SHORT TERM

(Tuesday night through Thursday night) Issued at 1206 AM CDT Tue May 19 2026

There is some signal for isentropic showers and storms late Tuesday evening across western north Texas and into southern and central Oklahoma. These elevated storms could become strong with gusty winds and small hail.

Wednesday and Thursday will feature increasing shower and storm chances thanks to several disturbances in the southwesterly flow aloft coupled with the continued presence of the subtropical jet. Temperature are expected to remain below normal in the 70s through mid-week with light east southeast surface winds. The potential for severe storms remains low, but a few strong storms with gusty winds and hail may be possible.

LONG TERM

(Friday through Monday) Issued at 1206 AM CDT Tue May 19 2026

A subtropical jet, with perturbations within the broader mid-level flow, will overspread the southern Plains through next weekend. This continuous mid-level flow will support daily thunderstorm chances through the weekend across our area. At this time, there is low confidence in severe weather during this timeframe. Temperatures will continue to be closer to seasonable through early next week.

AVIATION

(06Z TAFS) Issued at 1046 PM CDT Mon May 18 2026

A cold front will continue to move through the area tonight and into tomorrow, causing the winds to shift to the north-northeast in its wake. Thunderstorms are expected along this boundary as it moves towards the south. MVFR conditions will persist behind front through the end of the period.

PRELIMINARY POINT TEMPS/POPS

Oklahoma City OK 70 55 71 58 / 40 60 30 60 Hobart OK 72 54 73 56 / 20 50 20 70 Wichita Falls TX 81 58 76 59 / 80 70 40 70 Gage OK 72 46 70 51 / 0 10 10 70 Ponca City OK 69 52 70 55 / 20 30 10 50 Durant OK 84 64 78 64 / 90 60 50 70

OUN WATCHES/WARNINGS/ADVISORIES

OK...Wind Advisory until 3 AM CDT early this morning for OKZ004>027- 034>038.

TX...None.