Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 352, NWS Norman, OK

April 28, 20264 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 28, 2026, 3:59 PM CDT for 4 counties in Oklahoma. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 28, 2026, 3:59 PM CDT (20:59 UTC)
Expired: Apr 28, 2026, 4:27 PM CDT
In force: 28 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Bryan County, OK, Johnston County, OK, Love County, OK, Marshall County, OK

The radar

The Norman radar (KTLX), 150 km from the middle of the area, began a volume at 21:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 1:09 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.0 hours before the alert went out and 142 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 721 J/kg
Mixed-layer CIN: -346 J/kg
Mixed-layer LCL: 673 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 440 m²/s²
0-3 km storm-relative helicity: 607 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 24.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Apr 28, 12:52 PM CDT, 3 hours 7 minutes earlier. Its key messages:

Updated at 1249 PM CDT Tue Apr 28 2026
Severe thunderstorms expected this afternoon across southern Oklahoma and western north Texas, with very large hail and a low tornado risk.
A widespread round of rain is expected Thursday into Friday, but could be limited to locations along and south of I-40.

Area forecast discussion, Apr 28, 12:52 PM CDT, 3 hours 7 minutes before

Area Forecast Discussion
National Weather Service Norman OK
1252 PM CDT Tue Apr 28 2026

...New NEAR TERM, SHORT TERM...

.KEY MESSAGES...
Updated at 1249 PM CDT Tue Apr 28 2026

- Severe thunderstorms expected this afternoon across southern
  Oklahoma and western north Texas, with very large hail and a low
  tornado risk.

- A widespread round of rain is expected Thursday into Friday, but
  could be limited to locations along and south of I-40.

&&

.NEAR TERM...
(Rest of today and tonight)
Issued at 1249 PM CDT Tue Apr 28 2026

The rather widespread convective activity this morning makes for a
complex forecast this afternoon. Early indications were that we
would see rather aggressive wiping of atmospheric moisture behind
any morning convection. However, OK Mesonet observations show low-
70s dewpoints and at least weak surface southerlies back into
Jefferson/Love/Carter Counties. With that in mind, and with skies
clearing out behind the morning convection, surface-based convection
initiation looks likely this afternoon along the frontal zone of
southern Oklahoma/adjacent north Texas.

RAP forecast soundings suggest MLCAPE in excess of 3,000 J/kg along
and just south of the frontal boundary by midafternoon. Combined
with about 80 knots of cloud-layer shear, very large hail will be
possible with any initial supercell-type structures. The tornado
risk will be extant with any storms early and interacting with the
boundary, particularly with the extreme boundary-layer moisture
leading to 100-150 J/kg of 0-3 km instability. However, two factors
should limit the tornado risk: generally weak low-level shear with
no appreciable LLJ and veered surface winds, as well as a tendency
for the front to sink southeast in the afternoon and undercut any
convection immediately along it. A transition to more of a severe
wind risk over far southeast Oklahoma looks probable as storm cold
pools merge in the extremely unstable environment.

Convection will press south and east of our area by late evening as
the cold front continues southward. For those of us well behind the
front, it will be a cool day with low cloud cover struggling to thin
out.

Meister

&&

.SHORT TERM...
(Wednesday through Thursday night)
Issued at 1249 PM CDT Tue Apr 28 2026

Large-scale troughing moves into the Great Lakes during the day
tomorrow. Despite the continued activity of the subtropical jet, the
large-scale troughing will dominate the surface pattern, promoting
pressure rises and northerly surface winds. Because of that, it will
feel like a beautiful spring day, especially across the northern
half of the area where the sun is expected to come out in the
afternoon. Highs will remain in the upper 60s to low 70s.

The active southern stream will last into Thursday and presage a
return to southeasterly 850 mb winds. Given the suppression of the
surface warm sector, this does not pose a risk of surface-based
convection, but rather a chance for a widespread area of isentropic
ascent to develop from Thursday into Friday. Some of the guidance
this morning has continued the usual correction of northerly model
biases during widespread precip shield, which means that at least
through Thursday the best chance for measurable/appreciable rain
could be limited to areas south of I-40. This would also lead to
widespread cloudiness and cooler-than-normal temperatures struggling
to make it much past 60.

Meister

&&

.LONG TERM...
(Friday through Monday)
Issued at 148 AM CDT Tue Apr 28 2026

Precipitation is expected to become more widespread on Friday,
especially in the south, with showers and thunderstorm chances
persisting into Friday evening before ending as the mid-level trough
moves east of the forecast area. Temperatures will be seasonably
cool again Saturday before a warming trend through Tuesday. After
this system exits Friday evening, there are no significant
precipitation chances through the remainder of the forecast
period.

&&

.AVIATION...
(18Z TAFS)
Issued at 1226 PM CDT Tue Apr 28 2026

Many of our terminals will remain in a MVFR category through 00Z
with most terminals likely in a VFR category after 00Z through
the end of the forecast period. Most of our terminals are north of
a warm front boundary with northerly surface winds at 10 kts
gusting to 15 kts. Expecting the warm front currently stretched
just east and south of the I-44 corridor to begin pushing as a
cold front into southeast Oklahoma initiating a final round of
thunderstorms. Our terminal with the highest probability for
storms will be KDUA where TEMPOs are in place through 00Z for
potential severe thunderstorms. There is a 30% probability for
storms to impact terminal KSPS while probabilities are too low
around 20% for storms impacting terminals in the OKC Metro (KOKC &
KOUN) and KSWO to be in their respective TAFs but is worth
mentioning in this discussion. Surface winds will shift northerly
over terminal KDUA after the cold front passage and when
potential convective activity there moves out.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  47  69  49  64 /   0   0   0  50
Hobart OK         45  73  49  62 /   0   0  10  60
Wichita Falls TX  52  73  54  66 /   0   0  10  60
Gage OK           38  70  44  60 /   0   0  20  70
Ponca City OK     44  69  46  66 /   0   0   0  20
Durant OK         55  70  56  67 /  40  10  10  50

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&

NEAR TERM...04
SHORT TERM...04
LONG TERM....26
AVIATION...68

In the hours before

Local storm report, Apr 28, 3:30 PM CDT, 29 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
330 PM CDT Tue Apr 28 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0329 PM     Tstm Wnd Gst     5 SW Bromide            34.36N 96.55W
04/28/2026  M70 MPH          Johnston           OK   Emergency Mngr

&&

Local storm report, Apr 28, 3:32 PM CDT, 27 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
332 PM CDT Tue Apr 28 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     Tstm Wnd Dmg     6 SW Bromide            34.36N 96.58W
04/28/2026                   Johnston           OK   Emergency Mngr

            Lots of tree damage and powerlines down
            along a stretch from Hwy 377 east along Hwy
            7 and Wylie road.

&&

Local storm report, Apr 28, 3:41 PM CDT, 18 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
341 PM CDT Tue Apr 28 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     Tstm Wnd Dmg     6 SW Bromide            34.36N 96.58W
04/28/2026                   Johnston           OK   Emergency Mngr

            14 power poles down along highway 7, east of
            highway 377.

&&

RB

Local storm report, Apr 28, 3:42 PM CDT, 17 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
342 PM CDT Tue Apr 28 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0338 PM     Hail             4 SE Ardmore            34.14N 97.07W
04/28/2026  E1.00 Inch       Carter             OK   Public

            Report from mPING: Quarter (1.00 in.).

&&

RB

Special weather statement, Apr 28, 3:47 PM CDT, 12 minutes before

Special Weather Statement
National Weather Service Norman OK
347 PM CDT Tue Apr 28 2026

OKZ031-032-282115-
Hughes OK-Seminole OK-
347 PM CDT Tue Apr 28 2026

...A strong thunderstorm will impact portions of southeastern
Seminole and central Hughes Counties through 415 PM CDT...

At 347 PM CDT, Doppler radar was tracking a strong thunderstorm 5
miles west of Atwood, moving east at 35 mph.

HAZARD...Wind gusts of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Holdenville, Calvin, Lamar, Horntown, Atwood, and Spaulding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3514 9601 3512 9601 3512 9603 3509 9606
      3506 9607 3505 9609 3493 9609 3490 9641
      3493 9641 3490 9643 3492 9647 3491 9649
      3502 9653 3527 9598 3515 9598
TIME...MOT...LOC 2047Z 253DEG 30KT 3498 9643

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Schueth

Local storm report, Apr 28, 3:56 PM CDT, 3 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
356 PM CDT Tue Apr 28 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0346 PM     Tstm Wnd Dmg     1 N Caney               34.25N 96.21W
04/28/2026                   Atoka              OK   Emergency Mngr

            Tree fell on a house.

&&

RB

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 28, 8:25 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Jefferson, Love	50 min
Apr 28, 9:05 AM CDT	Special Weather Statement	OUN	Murray	25 min
Apr 28, 9:10 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	50 min
Apr 28, 9:13 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love, Marshall	47 min
Apr 28, 9:32 AM CDT	Special Weather Statement	OUN	Cleveland, McClain	28 min
Apr 28, 9:38 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Garvin, Hughes, Johnston, Murray, Pontotoc and 1 more	52 min
Apr 28, 9:54 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Love, Marshall	51 min
Apr 28, 9:59 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Pottawatomie, Seminole	30 min
Apr 28, 10:44 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan	26 min
Apr 28, 1:17 PM CDT	Special Weather Statement	OUN	Stephens	28 min
Apr 28, 1:29 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	46 min
Apr 28, 1:32 PM CDT	Special Weather Statement	OUN	Lincoln	28 min
Apr 28, 1:33 PM CDT	Special Weather Statement	OUN	Jefferson	27 min
Apr 28, 1:34 PM CDT	Special Weather Statement	OUN	Garvin	26 min
Apr 28, 1:45 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Pontotoc	45 min
Apr 28, 1:55 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garvin, Murray, Pontotoc	50 min
Apr 28, 2:00 PM CDT	Special Weather Statement	OUN	Lincoln	15 min
Apr 28, 2:03 PM CDT	Special Weather Statement	OUN	Jefferson	27 min
Apr 28, 2:09 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	51 min
Apr 28, 2:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garvin, Hughes, McClain, Pontotoc, Pottawatomie, Seminole	46 min
Apr 28, 2:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Coal, Johnston, Murray, Pontotoc	45 min
Apr 28, 2:33 PM CDT	Tornado Warning	OUN	Johnston, Murray, Pontotoc	42 min
Apr 28, 2:46 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	44 min
Apr 28, 2:47 PM CDT	Areal Flood Advisory	OUN	Murray	3 hr
Apr 28, 2:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Hughes, Pontotoc, Seminole	48 min
Apr 28, 3:01 PM CDT	Tornado Warning	OUN	Atoka, Coal, Johnston	44 min
Apr 28, 3:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Atoka, Bryan, Coal, Johnston, Pontotoc	91 min
Apr 28, 3:20 PM CDT	Tornado Warning	OUN	Carter, Love, Marshall	40 min
Apr 28, 3:37 PM CDT	Tornado Warning	OUN	Atoka, Bryan	38 min
Apr 28, 3:47 PM CDT	Special Weather Statement	OUN	Hughes	28 min
Apr 28, 3:55 PM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Johnston, Murray, Pontotoc	3 hr
Apr 28, 3:58 PM CDT	Tornado Warning	OUN	Atoka, Bryan	47 min
Apr 28, 4:44 PM CDT	Special Weather Statement	OUN	Atoka	16 min
Apr 28, 6:36 AM CDT	Severe Thunderstorm Warning	OUN	Knox	39 min
Apr 28, 7:10 AM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	50 min
Apr 28, 7:38 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Archer, Baylor, Clay, Wichita, Wilbarger	52 min
Apr 28, 8:10 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	50 min
Apr 28, 12:57 PM CDT	Special Weather Statement	OUN	Archer	33 min
Apr 28, 12:59 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay, Wichita	46 min
Apr 28, 1:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Archer, Clay, Wichita	47 min
Apr 28, 1:57 PM CDT	Tornado Warning	OUN	Archer, Clay	48 min
Apr 28, 2:23 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	37 min
Apr 28, 2:41 PM CDT	Tornado Warning	OUN	Clay	22 min
Apr 28, 3:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Archer, Clay	30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2026 Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.