textproduct: Norman

KEY MESSAGES

Updated at 126 AM CDT Sun Sep 27 2026

- Widespread beneficial rainfall expected beginning Tuesday through the end of next week.

- Temperatures will remain above normal through early next week, before cooling down mid-week.

NEAR TERM

(Through Sunday) Issued at 126 AM CDT Sun Sep 27 2026

Shortwave trough will continue to slowly move east and southeast across the area early this morning into the day Sunday. Meanwhile, height rises occur on the back side of this trough as shortwave ridging builds through the High Plains out into the Plains today.

As this occurs, precip and precip chances will slowly shift east as well today and after the early morning storms, expect much of the daytime activity to be confined across southeast parts of the area. Although an isolated storm into the I-35 corridor and across north Texas can not be ruled out.

In addition, the building ridge will mean another hot day across much of the area as above normal temperatures continue, ranging from the mid/upper 80s north, low to middle 90s in central sections and upper 90s to near 100 degrees again in the south into north Texas.

SHORT TERM

(Sunday night through Tuesday night) Issued at 126 AM CDT Sun Sep 27 2026

There will continue to be shower/storm chances Monday across mainly southeast Oklahoma, but an isolated storm will be possible back toward the I-35 corridor. Otherwise, dry and warm to hot afternoon temperatures, mid 80s north to upper 90s south.

As we move through the day Tuesday the shortwave ridge shifts east and south as large western trough develops a closed low and begins to shift slowly eastward. Out ahead of the low, a sub-tropical jet will bring increasing moisture northward across the Baja and into New Mexico and across the High Plains into the Southern and Central Plain states.

The abundant moisture and several embedded waves within this zone ahead of the upper low will result in showers and storms becoming more widespread to our west and then into western parts of the area during the day Tuesday. Precip chances then ramp up across the entire area Tuesday night.

LONG TERM

(Wednesday through Saturday) Issued at 126 AM CDT Sun Sep 27 2026

Models are in descent agreement as we go through the middle and latter part of the week into the weekend with regards to the closed low making a slow eastward progression. Along with already present plume of moisture, the remnants of Hurricane Polo will get pulled into the system as well, increasing the potential for heavy and flooding rainfall across the area as we go through the week.

To go along with the rainfall and associated cloud cover, temperatures will cool by the latter part of the week with highs in the 70s and low/mid 80s from Thursday into the weekend.

AVIATION

(06Z TAFS) Issued at 1028 PM CDT Sat Sep 26 2026

Most of our storm activity is moving across central & northcentral with several cells generally along and north of the I-40 corridor at least through 08Z. Will keep TEMPOS for terminals KSWO & KPNC with a lower 30% probability at terminals KOKC & KOUN. An isolated storm cell moving across southcentral Oklahoma could track into southeast Oklahoma impacting terminal KDUA where a 30% probability will be in place through 08Z. Ceilings will remain high but could see brief reductions in visibility due to rain resulting in brief periods of MVFR category through 08Z. After 08Z expecting all terminals to remain in a VFR category at least through 00Z. Storms may redevelop after 00Z across central through southeast Oklahoma with 30% probabilities for terminals KOKC, KOUN, and KDUA. As far as surface winds, expecting them to remain southerly although a surface trough will be pushing through western Oklahoma by 15Z with a light northerly wind shift behind this boundary mainly across northern & western Oklahoma.

PRELIMINARY POINT TEMPS/POPS

Oklahoma City OK 91 69 90 71 / 10 10 20 0 Hobart OK 93 67 92 71 / 0 0 0 10 Wichita Falls TX 98 69 97 72 / 10 10 10 0 Gage OK 89 62 85 65 / 0 10 10 20 Ponca City OK 84 64 83 66 / 0 10 10 10 Durant OK 94 69 94 71 / 20 30 30 0

OUN WATCHES/WARNINGS/ADVISORIES

OK...None. TX...None.