textproduct: Norman

KEY MESSAGES

Updated at 137 PM CDT Tue Jun 9 2026

- Severe thunderstorms will be possible this afternoon and evening across northwest Oklahoma.

- Hot & muggy conditions this upcoming week with heat indices near to above triple digits each day.

- More active period of showers and thunderstorms expected late this week through the weekend.

NEAR TERM

(Rest of today and tonight) Issued at 137 PM CDT Tue Jun 9 2026

Windy, hot and humid again today with heat indices from the upper 90s to near 110 across portions of northern Oklahoma. A Heat Advisory remains in effect for much of northern into portions of central Oklahoma through 7 pm this evening.

A weak surface boundary and minor upper air wave moving through New Mexico into the High Plains this afternoon will provide an environment sufficient for some high-based convection to develop across southwest Kansas southwestward across the Oklahoma and Texas panhandles into eastern New Mexico late this afternoon. These storms will then move east and northeast toward western and northwestern Oklahoma. As they approach the state, they will gradually diminish, but a few strong to low end severe storms may occur across northwest Oklahoma. As we go into the evening hours some of this activity could linger across portions of western and northern Oklahoma as low level jet and some weak waa develops, but the chance of severe will be low with these lingering storms.

SHORT TERM

(Wednesday through Thursday night) Issued at 137 PM CDT Tue Jun 9 2026

Wednesday looks much like Tuesday, windy and humid and perhaps a degree or two warmer, which will again lead to triple digit heat indices during the afternoon. Will go ahead and issue another Heat Advisory for portions of northern and perhaps western Oklahoma.

Meanwhile, a cold front will be moving south across Kansas and a dryline will take shape across northwestern Oklahoma southward into the eastern Texas panhandle. By late in the day as a shortwave moves out of the central Rockies into the Plains there is a chance for convective development along these boundaries. The higher probability will be to our north across Kansas along the cold front, but some southward development along the dryline appears possible. With modest instability and deep-layer shear any storm that does develop could become severe across northern into northwest and western Oklahoma. Although most locations will remain dry.

Anticipate any convection that does develop to diminish/dissipate during the early evening hours.

By Thursday, a larger scale trough will move through the northern and central Plains, dragging a cold front south as it does. This front is expected to move into northwest Oklahoma by late morning/midday. Ahead of the front veered low level flow and low level thermal ridge will make for another hot day across much of the area, although some slightly cooler air will begin to filter south in the wake of the front. Many areas will again see heat indices near or above the century mark.

By late afternoon, with the front located from north central into west central Oklahoma, showers and thunderstorms are expected to develop along the front. Although the wind shear is expected to be very weak, instability will support some pulse-type severe storms will hail and some wind potential. Although severe risk will diminish overnight, precip across the area will persist through the night Thursday night.

LONG TERM

(Friday through Monday) Issued at 239 AM CDT Tue Jun 9 2026

The surface boundary is projected to remain in the area Friday and provide a focus for continued storm development. An upper trough in the northwestern United States deepens and expands this weekend as it moves toward the Plains and pushes another front down the Plains. The operational medium-range models differ a little bit on the specific evolution and therefore timing of the cold front and best precipitation chances, but in general all suggest an active weather pattern for rain chances continued through at least the weekend.

AVIATION

(18Z TAFS) Issued at 1219 PM CDT Tue Jun 9 2026

Cumulus field continues to lift. Bases are sitting right around 3,000 feet at the moment and will steadily lift into the VFR category this afternoon. Expect a rather strong low-level jet to develop tonight. Only added low-level wind shear to the Woodward TAF, but could be in play at other sites as well. Guidance once again is rather weak in its depiction of stratus in the morning, but given the overperformance we have seen the last two mornings, added it in across the I-35 corridor in the morning.

Meister

PRELIMINARY POINT TEMPS/POPS

Oklahoma City OK 76 95 78 96 / 10 0 0 30 Hobart OK 75 98 77 99 / 10 0 0 30 Wichita Falls TX 75 96 77 98 / 10 0 0 0 Gage OK 76 102 79 98 / 20 20 20 10 Ponca City OK 78 95 79 96 / 10 0 0 50 Durant OK 78 92 79 93 / 10 0 0 0

OUN WATCHES/WARNINGS/ADVISORIES

OK...Heat Advisory until 7 PM CDT this evening for OKZ005>008-011>013- 018>020.

Heat Advisory from 1 PM to 7 PM CDT Wednesday for OKZ005>008- 011>013-017-018.

TX...None.