Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 621, NWS Norman, OK

May 28, 20244 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 28, 2024, 11:51 AM CDT for 4 counties in Oklahoma. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 28, 2024, 11:51 AM CDT (16:51 UTC)
Expired: May 28, 2024, 12:30 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blaine County, OK, Caddo County, OK, Custer County, OK, Dewey County, OK

The radar

The Vance AFB radar (KVNX), 134 km from the middle of the area, began a volume at 16:54 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.

What was reported inside it

Time	Report	Where	Remark
May 28, 12:15 PM CDT	HAIL 0.88	Custer City, OK

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 4.9 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: 86 J/kg
Mixed-layer CIN: -381 J/kg
Mixed-layer LCL: 2008 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

117 
WUUS54 KOUN 281651
SVROUN
OKC011-015-039-043-281730-
/O.NEW.KOUN.SV.W.0621.240528T1651Z-240528T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
1151 AM CDT Tue May 28 2024

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Northwestern Caddo County in southwestern Oklahoma...
  Custer County in western Oklahoma...
  Southwestern Blaine County in northwestern Oklahoma...
  Southeastern Dewey County in northwestern Oklahoma...

* Until 1230 PM CDT.

* At 1151 AM CDT, severe thunderstorms were located along a line
  extending from 7 miles northeast of Butler to 5 miles north of
  Thomas, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Weatherford, Clinton, Thomas, Hydro, Arapaho, Custer City, Butler,
  Fay, and Stafford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3583 9896 3590 9872 3556 9838 3547 9862
      3547 9912 3574 9924
TIME...MOT...LOC 1651Z 324DEG 19KT 3573 9912 3583 9878 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Mahale

1 follow-up statement

651 
WWUS54 KOUN 281712
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
1212 PM CDT Tue May 28 2024

OKC043-281721-
/O.CAN.KOUN.SV.W.0621.000000T0000Z-240528T1730Z/
Dewey OK-
1212 PM CDT Tue May 28 2024

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DEWEY COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3577 9898 3581 9863 3556 9838 3547 9862
      3547 9912 3570 9922
TIME...MOT...LOC 1711Z 332DEG 23KT 3567 9889 

$$

OKC011-015-039-281730-
/O.CON.KOUN.SV.W.0621.000000T0000Z-240528T1730Z/
Caddo OK-Custer OK-Blaine OK-
1212 PM CDT Tue May 28 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT
FOR NORTHWESTERN CADDO...CUSTER AND SOUTHWESTERN BLAINE COUNTIES...

At 1211 PM CDT, a severe thunderstorm was located over Custer City,
moving southeast at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Weatherford, Clinton, Thomas, Hydro, Arapaho, Custer City, Butler,
and Stafford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3577 9898 3581 9863 3556 9838 3547 9862
      3547 9912 3570 9922
TIME...MOT...LOC 1711Z 332DEG 23KT 3567 9889 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Meister

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 May 28, 6:14 AM CDT, 5 hours 37 minutes earlier.

Area forecast discussion, May 28, 6:14 AM CDT, 5 hours 37 minutes before

Area Forecast Discussion
National Weather Service Norman OK
614 AM CDT Tue May 28 2024

...New AVIATION...

.SHORT TERM...
(Today and tonight)
Issued at 1210 AM CDT Tue May 28 2024

Here we are, back in a stormy pattern, though different from
previous weeks. Rather than drylines and cold fronts, this week's
weather is brought to you mainly by warm air advection and northwest
flow.

At the time of writing, we sit with easterly surface flow and a warm
front draped across north Texas from about Sweetwater to Aspermont
to Denton. A swath of 3000-4000 joules of MUCAPE is advecting north
through western north Texas and set to overspread much of western
Oklahoma by morning. With a modest low level jet and moderate deep
layer shear developing, we could (20-30% chance; note, CAMs may have
a low bias in coverage as is sometimes seen in WAA schemes) see a
few storms (including a few strong to severe) develop in this region
of warm air advection. These would mainly be elevated hailers.

Instability peaks around 12Z, then gradually dwindles north to south
through the day. However, this is when upper level support finally
gets going across much of the region, allowing for an uptick in
showers and storms. With the loss of the low level jet and dwindling
instability, severe chances will be on the downtick despite
increasing coverage of storms.

CAMs depict another round of storms developing late this afternoon /
evening off the dryline in western Texas. These storms will make
their way eastward through the evening into western north Texas and
southwest Oklahoma, though what environment they encounter will
depend partly on convection earlier in the day. Most models suggest
a lack of instability, limiting the severe risk.

Day

&&

.LONG TERM...
(Wednesday through Monday)
Issued at 209 AM CDT Tue May 28 2024

As mentioned in the short term, this week's weather will be largely
driven by warm air advection and northwest flow, keeping rain
chances in the forecast daily (especially during overnight periods).
With sustained southerly flow, moisture and instability will likely
remain plentiful through the week (big picture view), though deep
layer shear tends to drop off after Tuesday. Flooding may become the
bigger issue as we see round after round of rainfall adding up by
late week.

With all the rain and cloud cover, temperatures will be a bit cooler
(highs in the upper 70s and lower 80s), albeit muggy. By this
weekend, however, we may see temperatures start to inch back up,
though synoptic uncertainty is high.

Day

&&

.AVIATION...
(12Z TAFS)
Issued at 614 AM CDT Tue May 28 2024

Multiple waves of showers and thunderstorms are expected over the
next 24 hours, especially across southwestern Oklahoma and western
north Texas (including KSPS, KLAW and near KCSM). Apart from the
showers and thunderstorms themselves, VFR conditions are expected
in general through the day, but some stratus with MVFR ceilings
will become more common overnight.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  81  63  79  65 /  50  40  60  30
Hobart OK         82  63  80  65 /  70  60  50  40
Wichita Falls TX  83  65  81  66 /  70  60  50  30
Gage OK           81  59  80  62 /  50  50  40  40
Ponca City OK     81  62  80  63 /  30  30  40  20
Durant OK         81  65  80  66 /  50  50  60  20

&&

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

SHORT TERM...14
LONG TERM....14
AVIATION...26

Hazardous weather outlook, May 28, 10:17 AM CDT, 1 hour 34 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1017 AM CDT Tue May 28 2024

OKZ004>048-050>052-TXZ083>090-291530-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1017 AM CDT Tue May 28 2024

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...Today and Tonight...

.Thunderstorms...
Scattered thunderstorms will continue through the morning hours
and into the early afternoon hours across portions of northwest
into western Oklahoma. A few of these storms will be severe with
large hail, to the size of golf balls, the main hazard. Heavy rain
will be possible with these storms.

Additional rounds of storms will be possible late this afternoon
through this evening, with a severe risk for large hail and
damaging wind. Most of the storms, along with the severe storm
risk, will be over western Oklahoma and western north Texas this
evening.

.Flooding...
Repeated rounds of thunderstorms, including heavy rain, are
possible this evening and overnight. This could result in
flooding, mainly across western north Texas and southwest
Oklahoma.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

.Thunderstorms...
There will be a chance of thunderstorms each day through Sunday
with the most widespread thunderstorms expected to be overnight
each night as thunderstorm complexes move into Oklahoma and north
Texas from the High Plains. There will be the potential for strong
to possible severe storms each day, but the risk and areas that
could be affected will become better defined as those days
approach.

.Flooding...
Rain accumulations over several days could also result in a
potential for flooding later this week.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Special weather statement, May 28, 10:18 AM CDT, 1 hour 33 minutes before

Special Weather Statement
National Weather Service Norman OK
1018 AM CDT Tue May 28 2024

OKZ009-010-015-281545-
Woodward OK-Dewey OK-Ellis OK-
1018 AM CDT Tue May 28 2024

...A strong thunderstorm will impact portions of east central Ellis,
northwestern Dewey and southwestern Woodward Counties through 1045 AM
CDT...

At 1018 AM CDT, Doppler radar was tracking a strong thunderstorm 5
miles northeast of Harmon, moving east at 15 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Vici and Sharon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3609 9955 3624 9956 3628 9930 3609 9924
TIME...MOT...LOC 1518Z 265DEG 14KT 3619 9947

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Mahale

Local storm report, May 28, 10:39 AM CDT, 1 hour 12 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1039 AM CDT Tue May 28 2024

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

1025 AM     Hail             3 ENE Fargo             36.39N 99.57W
05/28/2024  E1.00 Inch       Woodward           OK   CO-OP Observer

&&

oun

Local storm report, May 28, 10:43 AM CDT, 1 hour 8 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1043 AM CDT Tue May 28 2024

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

1039 AM     Hail             Mutual                  36.23N 99.17W
05/28/2024  E1.00 Inch       Woodward           OK   Trained Spotter

&&

oun

Special weather statement, May 28, 10:51 AM CDT, 1 hour before

Special Weather Statement
National Weather Service Norman OK
1051 AM CDT Tue May 28 2024

OKZ004-009-281615-
Harper OK-Ellis OK-
1051 AM CDT Tue May 28 2024

...A strong thunderstorm will impact portions of north central Ellis
and southwestern Harper Counties through 1115 AM CDT...

At 1051 AM CDT, Doppler radar was tracking a strong thunderstorm near
Laverne, moving southeast at 20 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Laverne and May.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3677 10000 3679 9997 3667 9960 3647 9984
      3660 10000
TIME...MOT...LOC 1551Z 302DEG 19KT 3670 9997

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Mahale

Local storm report, May 28, 11:20 AM CDT, 31 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1120 AM CDT Tue May 28 2024

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

1000 AM     Hail             5 NNW Sharon            36.34N 99.36W
05/28/2024  E2.00 Inch       Woodward           OK   Public

            Relayed images. Radar estimated time.

&&

MDU

Special weather statement, May 28, 11:39 AM CDT, 12 minutes before

Special Weather Statement
National Weather Service Norman OK
1139 AM CDT Tue May 28 2024

OKZ009-010-281715-
Woodward OK-Ellis OK-
1139 AM CDT Tue May 28 2024

...A strong thunderstorm will impact portions of north central Ellis
and west central Woodward Counties through 1215 PM CDT...

At 1139 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northwest of Fargo, moving southeast at 25 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Woodward, Gage, Fargo, and Tangier.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3659 9994 3659 9963 3637 9933 3622 9972
TIME...MOT...LOC 1639Z 315DEG 21KT 3648 9969

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Mahale

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	41 min
May 28, 1:25 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	50 min
May 28, 1:28 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Stephens	47 min
May 28, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	45 min
May 28, 1:52 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	23 min
May 28, 1:55 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	24 min
May 28, 1:58 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Garvin, Murray, Stephens	47 min
May 28, 2:42 AM CDT	Special Weather Statement	OUN	Garvin	33 min
May 28, 2:44 AM CDT	Special Weather Statement	OUN	Comanche	31 min
May 28, 2:45 AM CDT	Special Weather Statement	OUN	Murray	30 min
May 28, 3:19 AM CDT	Severe Thunderstorm Warning	OUN	Jefferson	41 min
May 28, 3:36 AM CDT	Areal Flood Advisory	OUN	Love	3 hr
May 28, 3:47 AM CDT	Special Weather Statement	OUN	Washita	28 min
May 28, 4:01 AM CDT	Special Weather Statement	OUN	Pontotoc	29 min
May 28, 4:06 AM CDT	Special Weather Statement	OUN	Kiowa	24 min
May 28, 4:10 AM CDT	Special Weather Statement	OUN	Seminole	35 min
May 28, 4:17 AM CDT	Areal Flood Advisory	OUN	Love	3 hr
May 28, 4:22 AM CDT	Special Weather Statement	OUN	Washita	23 min
May 28, 4:29 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Tillman	46 min
May 28, 4:31 AM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	44 min
May 28, 4:43 AM CDT	Special Weather Statement	OUN	Comanche	32 min
May 28, 4:47 AM CDT	Special Weather Statement	OUN	Harmon	28 min
May 28, 4:53 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	52 min
May 28, 5:01 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Tillman	44 min
May 28, 5:09 AM CDT	Special Weather Statement	OUN	Comanche	36 min
May 28, 5:13 AM CDT	Areal Flood Advisory	OUN	Caddo, Comanche, Kiowa	3 hr
May 28, 5:13 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	47 min
May 28, 5:16 AM CDT	Flash Flood Warning	OUN	Cotton	3 hr
May 28, 5:26 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	49 min
May 28, 5:40 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	50 min
May 28, 5:48 AM CDT	Areal Flood Advisory	OUN	Cotton	3 hr
May 28, 5:52 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	38 min
May 28, 6:14 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	46 min
May 28, 8:19 AM CDT	Special Weather Statement	OUN	Grant	26 min
May 28, 8:41 AM CDT	Special Weather Statement	OUN	Grant	34 min
May 28, 9:03 AM CDT	Special Weather Statement	OUN	Woodward	27 min
May 28, 9:15 AM CDT	Special Weather Statement	OUN	Ellis	30 min
May 28, 9:21 AM CDT	Special Weather Statement	OUN	Woodward	24 min
May 28, 9:24 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper	51 min
May 28, 9:39 AM CDT	Special Weather Statement	OUN	Woodward	36 min
May 28, 9:40 AM CDT	Special Weather Statement	OUN	Harper	35 min
May 28, 9:44 AM CDT	Severe Thunderstorm Warning	OUN	Woodward	46 min
May 28, 9:46 AM CDT	Special Weather Statement	OUN	Ellis	29 min
May 28, 9:51 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	39 min
May 28, 10:00 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Woodward	45 min
May 28, 10:01 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis, Harper, Woodward	44 min
May 28, 10:18 AM CDT	Special Weather Statement	OUN	Harper	27 min
May 28, 10:18 AM CDT	Special Weather Statement	OUN	Woodward	27 min
May 28, 10:20 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	40 min
May 28, 10:24 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Woodward	51 min
May 28, 10:35 AM CDT	Severe Thunderstorm Warning	OUN	Harper	19 min
May 28, 10:43 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Dewey, Major, Woodward	47 min
May 28, 10:51 AM CDT	Special Weather Statement	OUN	Harper	24 min
May 28, 10:55 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper	50 min
May 28, 11:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Custer, Dewey, Ellis, Roger Mills, Woodward	50 min
May 28, 11:39 AM CDT	Special Weather Statement	OUN	Ellis	36 min
May 28, 11:57 AM CDT	Areal Flood Advisory	OUN	Dewey	3 hr
May 28, 12:01 PM CDT	Special Weather Statement	OUN	Ellis	29 min
May 28, 12:03 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	42 min
May 28, 12:28 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Washita	19 min
May 28, 1:02 PM CDT	Special Weather Statement	OUN	Caddo	28 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2024 Every severe thunderstorm warning in 2024

Sources

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