Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 165, NWS Norman, OK

May 3, 2021Lincoln County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 3, 2021, 9:30 PM CDT for Lincoln County, Oklahoma. It was in force for 45 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 3, 2021, 9:30 PM CDT (02:30 UTC)
Expired: May 3, 2021, 10:15 PM CDT
In force: 45 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 2.5 in
Wind: 60.0 mph

County Lincoln County, OK

The radar

The Norman radar (KTLX), 48 km from the middle of the area, began a volume at 02:32 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 3, 10:13 PM CDT	HAIL 1.5	4 Nw Chandler, OK	REPORT FROM MPING: PING PONG BALL (1.50 IN.).

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 43 minutes after it went out.

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

Springfield, MO (KSGF), launched 00:00Z, 2.5 hours before the alert went out and 312 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: 1558 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

725 
WUUS54 KOUN 040230
SVROUN
OKC081-040315-
/O.NEW.KOUN.SV.W.0165.210504T0230Z-210504T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
930 PM CDT Mon May 3 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lincoln County in central Oklahoma...

* Until 1015 PM CDT.

* At 930 PM CDT, a severe thunderstorm was located near Meeker,
  moving north at 20 mph.

  HAZARD...Tennis ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Chandler, Meeker, Sparks and Warwick. 

This includes Interstate 44 between mile markers 158 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 3552 9681 3549 9703 3571 9705 3576 9691
      3576 9677
TIME...MOT...LOC 0230Z 189DEG 19KT 3550 9693 

HAIL...2.50IN
WIND...60MPH
 
$$

Mahale

2 follow-up statements

934 
WWUS54 KOUN 040257
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
957 PM CDT Mon May 3 2021

OKC081-040315-
/O.CON.KOUN.SV.W.0165.000000T0000Z-210504T0315Z/
Lincoln OK-
957 PM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR CENTRAL LINCOLN COUNTY...

At 956 PM CDT, a severe thunderstorm was located 4 miles south of
Chandler, moving north at 20 mph.

HAZARD...Tennis ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Chandler, Sparks and Warwick. 

This includes Interstate 44 between mile markers 158 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3557 9680 3555 9699 3571 9705 3576 9691
      3576 9677
TIME...MOT...LOC 0256Z 189DEG 19KT 3564 9690 

HAIL...2.50IN
WIND...60MPH
 
$$

Mahale

569 
WWUS54 KOUN 040302
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
1002 PM CDT Mon May 3 2021

OKC081-040315-
/O.CON.KOUN.SV.W.0165.000000T0000Z-210504T0315Z/
Lincoln OK-
1002 PM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR CENTRAL LINCOLN COUNTY...

At 1002 PM CDT, a severe thunderstorm was located near Chandler,
moving north at 20 mph.

HAZARD...Tennis ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Chandler, Davenport, Sparks and Warwick. 

This includes Interstate 44 between mile markers 160 and 173.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3561 9679 3561 9699 3572 9703 3576 9691
      3576 9677
TIME...MOT...LOC 0302Z 189DEG 19KT 3567 9689 

HAIL...2.50IN
WIND...60MPH
 
$$

Mahale

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 3, 6:28 PM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, May 3, 6:28 PM CDT, 3 hours 2 minutes before

Area Forecast Discussion
National Weather Service Norman OK
628 PM CDT Mon May 3 2021

...New AVIATION...

.SHORT TERM...
(This evening through Overnight)
Issued at 203 PM CDT Mon May 3 2021

Storms are expected to develop quickly late this afternoon into this
evening along a cold front that will be located across portions of
southeast into south central Oklahoma. A favorable environment for
severe storms will exist ahead of the cold front across this area.
Initially as storms are expected to be more discrete, supercells
capable of producing very large hail and tornadoes will be possible
along with strong winds gusts.

This activity will become more linear, probably just as it exits our
southeast counties, winds will be an increasing threat.

Meanwhile, farther west as the main trough begins to shift east out
of the southern Rockies, additional storms will develop across west
Texas. These storms will be elevated as they form well north of the
surface cold front. However, sufficient instability will exist for
some large hail as these storms move into the western north Texas
counties. As we approach midnight, instability will be waining and
hail size is expected to decrease as storms move toward the I-35
corridor of southern Oklahoma. Other, weaker activity will also
impact much of western and northern Oklahoma overnight.

Otherwise, quite a bit colder air will filter south behind the cold
front. Temperatures are expected to fall into the 40s across
portions of northwest Oklahoma with gusty north winds, giving it a
bit of a bite. Lows in the 50s are expected elsewhere.

&&

.LONG TERM...
(Tuesday through next Sunday)
Issued at 203 PM CDT Mon May 3 2021

System that will bring showers/storms tonight will exit the area
Tuesday morning. Some showers may linger in parts of the fa tomorrow
morning but should end by mid-day. Sfc high will also settle into
the area tomorrow with below average temperatures expected. As the
sfc high moves off to the east, winds will shift back towards the
south Wednesday.

Models then show a shortwave approaching from the northwest and
moving across the Plains Wednesday night. Models show an area of
showers/storms moving across parts of the fa with this shortwave
although disagree on how much and path of the area of rain.

Upper ridging will briefly occur behind the previously mentioned
shortwave before flattening out the end of this week with a
shortwave moving across the central/southern Plains Friday night
bringing another chance for showers/storms to parts of the area.
Various shortwaves/disturbances moving through the flow will
continue over the weekend which will maintain the chances for
showers and storms.

&&

.AVIATION...
(00Z TAFS)
Issued at 625 PM CDT Mon May 3 2021

MVFR cigs will return later tonight mainly after 06Z for most
terminals. Winds will remain northerly around 15 kt with some
stronger gusts before 09Z. A few showers and tsra are expected
mainly after 06Z near SPS, PNC, and SWO.

&&

.UPPER AIR...
Issued at 203 PM CDT Mon May 3 2021

A 19Z May 3 Upper Air flight was done today. A 0Z flight currently
is not planned.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  52  63  44  70 /  40  40   0   0
Hobart OK         52  68  43  73 /  40  10   0   0
Wichita Falls TX  57  69  46  75 /  40  10   0   0
Gage OK           46  66  41  74 /  60  10   0  10
Ponca City OK     51  65  41  68 /  50  40   0  10
Durant OK         59  68  46  73 /  70  10   0   0

&&

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

SHORT TERM...30
LONG TERM....25
AVIATION...03

Hazardous weather outlook, May 3, 8:49 PM CDT, 41 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
849 PM CDT Mon May 3 2021

OKZ004>048-050>052-TXZ083>090-050200-
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-
849 PM CDT Mon May 3 2021

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

.DAY ONE...Tonight...

.Thunderstorms...
There is an enhanced risk of severe thunderstorms this evening
until midnight across portions of southern and eastern Oklahoma.
Brief tornadoes will remain possible until 10 PM, along with hail
up to the size of baseballs and thunderstorm wind gusts up to 70
mph. There's a slight risk of severe thunderstorms across portions
of central Oklahoma and also western north Texas. Hail up to the
size of golf balls and wind gusts up to 60 mph will be possible
across these areas thru midnight.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

Storm spotter groups and emergency management personnel across
southern and eastern Oklahoma and north Texas should prepare for
severe weather operations after 5 PM.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

.Thunderstorms...
Overnight thunderstorms may linger into Tuesday morning across
north central, portions of central into eastern Oklahoma,
although severe weather is not expected.

Thunderstorms will be possible Wednesday night with no severe
weather expected. Thunderstorm chances return again Friday evening
and continue through Sunday, although storms are not expected to
be widespread.

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

In the hours before

Local storm report, May 3, 8:52 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
852 PM CDT MON MAY 3 2021

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

0846 PM     HAIL             5 SSW KINGSTON          33.94N 96.76W
05/03/2021  E1.00 INCH       MARSHALL           OK   TRAINED SPOTTER

&&

RCB

Local storm report, May 3, 8:59 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
859 PM CDT MON MAY 3 2021

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

0855 PM     HAIL             4 SE BETHEL ACRES       35.28N 97.00W
05/03/2021  E1.00 INCH       POTTAWATOMIE       OK   TRAINED SPOTTER

&&

RCB

Local storm report, May 3, 9:05 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
905 PM CDT MON MAY 3 2021

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

0855 PM     HAIL             2 SE KINGSTON           33.98N 96.70W
05/03/2021  E1.00 INCH       MARSHALL           OK   TRAINED SPOTTER

&&

RCB

Local storm report, May 3, 9:10 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
910 PM CDT MON MAY 3 2021

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

0910 PM     HAIL             3 NW SHAWNEE            35.37N 96.95W
05/03/2021  E1.25 INCH       POTTAWATOMIE       OK   TRAINED SPOTTER

&&

RCB

Local storm report, May 3, 9:22 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
922 PM CDT MON MAY 3 2021

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

0910 PM     HAIL             3 ESE DALE              35.38N 97.00W
05/03/2021  E2.50 INCH       POTTAWATOMIE       OK   BROADCAST MEDIA

&&

MAD

Special weather statement, May 3, 9:24 PM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
924 PM CDT Mon May 3 2021

OKZ028>030-040-040300-
Pottawatomie OK-Cleveland OK-Garvin OK-McClain OK-
924 PM CDT Mon May 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR southwestern Pottawatomie...
southeastern Cleveland...northeastern Garvin and southeastern McClain
Counties Until 1000 PM CDT...

AT 924 PM CDT, a strong thunderstorm was located 7 miles northeast of
Pauls Valley, moving northeast at 20 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...

Locations impacted include...
Pauls Valley, Wanette, Byars and Rosedale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3493 9689 3496 9692 3496 9693 3489 9693
      3472 9711 3475 9726 3501 9715 3496 9686
TIME...MOT...LOC 0224Z 220DEG 19KT 3479 9712

Mahale

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes	43 min
May 3, 7:07 PM CDT	Tornado Warning	OUN	Coal	26 min
May 3, 7:13 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray, Pontotoc	47 min
May 3, 7:22 PM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc, Seminole	3 hr
May 3, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	37 min
May 3, 7:32 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Pontotoc	43 min
May 3, 7:41 PM CDT	Flash Flood Warning	OUN	Coal, Pontotoc	3 hr
May 3, 7:52 PM CDT	Special Weather Statement	OUN	Seminole	23 min
May 3, 7:55 PM CDT	Special Weather Statement	OUN	Pontotoc	35 min
May 3, 7:59 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	46 min
May 3, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	39 min
May 3, 8:07 PM CDT	Tornado Warning	OUN	Atoka	8 min
May 3, 8:14 PM CDT	Special Weather Statement	OUN	Pottawatomie	46 min
May 3, 8:26 PM CDT	Special Weather Statement	OUN	Marshall	34 min
May 3, 8:33 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	42 min
May 3, 8:36 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Johnston, Marshall	39 min
May 3, 8:39 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie	51 min
May 3, 8:46 PM CDT	Special Weather Statement	OUN	Atoka	29 min
May 3, 8:48 PM CDT	Special Weather Statement	OUN	Coal	27 min
May 3, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	50 min
May 3, 8:56 PM CDT	Flash Flood Warning	OUN	Atoka, Coal	3 hr
May 3, 8:57 PM CDT	Tornado Warning	OUN	Atoka	33 min
May 3, 9:03 PM CDT	Areal Flood Advisory	OUN	Pottawatomie	3 hr
May 3, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	51 min
May 3, 9:24 PM CDT	Special Weather Statement	OUN	Garvin	36 min
May 3, 9:32 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, McClain, Pontotoc, Pottawatomie	43 min
May 3, 9:44 PM CDT	Special Weather Statement	OUN	Hughes	31 min
May 3, 10:04 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	41 min
May 3, 10:32 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	43 min
May 3, 10:36 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	54 min
May 3, 11:09 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	31 min
May 3, 11:15 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	45 min
May 3, 11:34 PM CDT	Special Weather Statement	OUN	Cleveland	26 min
May 3, 11:53 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	52 min
May 3, 11:56 PM CDT	Special Weather Statement	OUN	Jefferson, Stephens	64 min
May 4, 12:12 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Stephens	48 min
May 4, 12:18 AM CDT	Special Weather Statement	OUN	Payne	42 min
May 4, 12:28 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson	47 min
May 4, 12:40 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	50 min
May 4, 12:43 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	29 min
May 4, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Payne	41 min
May 4, 1:05 AM CDT	Special Weather Statement	OUN	Love	40 min
May 4, 1:20 AM CDT	Special Weather Statement	OUN	Cleveland	25 min
May 4, 1:23 AM CDT	Severe Thunderstorm Warning	OUN	Johnston, Murray, Pontotoc	52 min
May 4, 1:55 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Pontotoc	50 min
May 4, 2:00 AM CDT	Special Weather Statement	OUN	Hughes	45 min
May 4, 2:31 AM CDT	Special Weather Statement	OUN	Coal	29 min
May 4, 1:47 PM CDT	River Flood Advisory	OUN	Atoka	19 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning in 2021

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.