Alert archive / Oklahoma / Tornado Warnings in 2024

Tornado Warning 91, NWS Norman, OK

April 30, 2024Tillman County, Oklahoma

NWS Norman, OK issued this tornado warning at Apr 30, 2024, 10:31 PM CDT for Tillman County, Oklahoma. It was in force for 44 min. 2 reports 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: Apr 30, 2024, 10:31 PM CDT (03:31 UTC)
Expired: Apr 30, 2024, 11:15 PM CDT
In force: 44 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Tillman County, OK

The radar

The Altus AFB radar (KFDR), 15 km from the middle of the area, began a volume at 03:35 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
Apr 30, 10:45 PM CDT	TSTM WND GST 58	3 W Grandfield, OK	Grandfield Mesonet.
Apr 30, 11:10 PM CDT	TSTM WND GST 59	3 W Grandfield, OK	Grandfield Mesonet.

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 tornado 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 30, 4:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 30, 10:27 PM CDT	Tornado Watch	SPC	93 min

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.5 hours before the alert went out and 166 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: 2804 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

As transmitted.

820 
WFUS54 KOUN 010331
TOROUN
OKC141-010415-
/O.NEW.KOUN.TO.W.0091.240501T0331Z-240501T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
1031 PM CDT Tue Apr 30 2024

The National Weather Service in Norman has issued a

* Tornado Warning for...
  Southeastern Tillman County in southwestern Oklahoma...

* Until 1115 PM CDT.

* At 1030 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located just east of Hollister, moving south and west 
  at 10 mph.

  HAZARD...Tornado and golf ball size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Grandfield, Hollister, and Loveland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter, safe room or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3438 9890 3441 9877 3416 9866 3418 9891
TIME...MOT...LOC 0330Z 004DEG 10KT 3434 9881 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

11

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Apr 30, 6:55 PM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, Apr 30, 6:55 PM CDT, 3 hours 36 minutes before

Area Forecast Discussion
National Weather Service Norman OK
655 PM CDT Tue Apr 30 2024

...New AVIATION...

.SHORT TERM...
(This evening through Wednesday night)
Issued at 300 PM CDT Tue Apr 30 2024

Daytime heating this afternoon will support the chance for isolated
to widely scattered thunderstorms along a diffuse dryline as
convective inhibition weakens across western Oklahoma. Effective
bulk shear will be modest (~35 knots) for supercells. The expected
hazards will be damaging wind gusts and hail; however, if any
supercell can sustain themselves into the evening, there will be a
short window of opportunity for a low tornado threat as the low-
level jet strengthens with an attendant increase in low-level
storm relative helicity. Thunderstorms should weaken with the loss
of daytime heating as convective inhibition strengthens.

Additional thunderstorms are expected to develop across Kansas in
association with a cold front, which will likely move southward into
north central Oklahoma tonight. Warm air advection associated
with a low-level jet may result in continued development in this
zone. Given the heavy rainfall they experienced with the last
event, we opted to issue a Flood Watch for north central Oklahoma.

For tomorrow, the uncertainty is on how far southwest the outflow
boundary from the morning thunderstorms will progress. This
boundary may serve as a focus for redevelopment tomorrow
afternoon. Another scenario is that convection may continue to
move to the southwest through the day and never fully dissipate.
In addition, the dryline should retreat farther to the west, into
the Texas and Oklahoma panhandles. Both of these boundaries (and
any associated intersection) will result in a chance for
thunderstorms tomorrow afternoon. Strong to severe thunderstorms
will be possible.

Tomorrow night, there is evidence that any ongoing thunderstorms
may consolidate into one or two complexes that will move across
the area.

Mahale

&&

.LONG TERM...
(Thursday through next Monday)
Issued at 300 PM CDT Tue Apr 30 2024

There remains uncertainty on where the cold front will be
Thursday as it will depend on what happens Wednesday night. The
cold front will likely get another southward push on Thursday with
another chance of showers and thunderstorms.

The aforementioned cold front will likely lift back to the north
on Friday with persistent southwest flow into the upcoming
weekend. As a result, there will be continued periods of showers
and thunderstorms. Flooding will likely become a hazard in some
locations given the recent rainfall across the area.

Mahale

&&

.AVIATION...
(00Z TAFS)
Issued at 648 PM CDT Tue Apr 30 2024

TSRA expected to have impacts mainly at KPNC and KSWO overnight
into tomorrow morning (closer to incoming from across southern
Kansas). Impacts at KCSM, KLAW, and KSPS is possible for the
first few hours of forecast before dissipating. Frontal boundary
expected to progress down toward central Oklahoma toward 12Z,
possibly reinforced by TSRA outflow, but retreat during the day
tomorrow. PROB30 will be included central Oklahoma tomorrow
afternoon near retreating front. TSRA will also be possible across
western Oklahoma by end of forecast, but impacts may occur just
beyond this forecast valid time.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  63  79  64  78 /  30  50  40  80
Hobart OK         62  82  61  81 /  20  40  50  40
Wichita Falls TX  65  82  64  83 /  50  30  60  50
Gage OK           58  87  58  79 /  20  40  40  20
Ponca City OK     61  80  65  77 /  80  50  50  90
Durant OK         65  83  65  79 /  20  30  60  80

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Flood Watch through Wednesday morning for OKZ007-008-012-013.

TX...None.
&&

SHORT TERM...10
LONG TERM....10
AVIATION...11

Hazardous weather outlook, Apr 30, 4:54 PM CDT, 5 hours 37 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
454 PM CDT Tue Apr 30 2024

OKZ004>048-050>052-TXZ083>090-012200-
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-
454 PM CDT Tue Apr 30 2024

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Scattered thunderstorms are ongoing across western Oklahoma into
north Texas this afternoon. These thunderstorms will persist into
the evening with a threat for large hail and damaging wind gusts.

Additional thunderstorms are likely across north central Oklahoma
later tonight.

.Heavy Rainfall...
Heavy rainfall could lead to localized flooding this evening and
overnight across northern Oklahoma.

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

.Thunderstorms...
Thunderstorm chances continue Wednesday and Thursday with severe
weather possible both days. Thunderstorms are also possible Friday
and over the weekend.

.Heavy Rainfall...
Repeated rounds of thunderstorms with heavy rainfall could lead to
localized flooding in some areas through the weekend.

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

Mahale

In the hours before

Local storm report, Apr 30, 9:18 PM CDT, 1 hour 13 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
918 PM CDT Tue Apr 30 2024

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

0845 PM     Hail             3 SE Blair              34.75N 99.30W
04/30/2024  E1.75 Inch       Jackson            OK   Public

            Report from mPING: Golf Ball (1.75 in.).
            Radar estimated time.

&&

MDU

Local storm report, Apr 30, 9:30 PM CDT, 1 hour 1 minute before

Preliminary Local Storm Report
National Weather Service Norman OK
930 PM CDT Tue Apr 30 2024

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

0928 PM     Hail             3 W Kildare             36.80N 97.10W
04/30/2024  E1.25 Inch       Kay                OK   Public

            Report from mPING: Half Dollar (1.25 in.).

&&

MDU

Special weather statement, Apr 30, 9:37 PM CDT, 54 minutes before

Special Weather Statement
National Weather Service Norman OK
937 PM CDT Tue Apr 30 2024

OKZ023-027-038-039-010300-
Grady OK-Stephens OK-Caddo OK-Comanche OK-
937 PM CDT Tue Apr 30 2024

...Strong thunderstorms will impact portions of northeastern
Comanche, southern Grady, southeastern Caddo and northern Stephens
Counties through 1000 PM CDT...

At 936 PM CDT, Doppler radar was tracking a strong thunderstorms
extending from around Cement to near Fort Sill, to around Marlow,
moving east at 20 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
Lawton, Duncan, Chickasha, Marlow, Elgin, Apache, Rush Springs, Bray,
Fletcher, Cyril, Sterling, Alex, Verden, Cement, Amber, Medicine
Park, Norge, Boone, Tabler, and Lake Lawtonka.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3457 9849 3488 9857 3519 9784 3472 9767
      3468 9767 3468 9765 3451 9759
TIME...MOT...LOC 0236Z 260DEG 17KT 3472 9832

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

11

Local storm report, Apr 30, 10:00 PM CDT, 31 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1000 PM CDT Tue Apr 30 2024

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

0933 PM     Tstm Wnd Gst     4 SSE Frederick         34.34N 98.98W
04/30/2024  M63 MPH          Tillman            OK   ASOS

            KFDR.

&&

MDU

Local storm report, Apr 30, 10:15 PM CDT, 16 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1015 PM CDT Tue Apr 30 2024

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

0835 PM     Tstm Wnd Gst     1 SW Medford            36.79N 97.75W
04/30/2024  M66 MPH          Grant              OK   Mesonet

            Medford Mesonet.

&&

MDU

Local storm report, Apr 30, 10:19 PM CDT, 12 minutes before

Preliminary Local Storm Report
National Weather Service Norman OK
1019 PM CDT Tue Apr 30 2024

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

1015 PM     Hail             Manitou                 34.51N 98.98W
04/30/2024  E1.75 Inch       Tillman            OK   Emergency Mngr

&&

MDU

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:02 PM CDT	Areal Flood Advisory	OUN	Blaine, Dewey	118 min
Apr 30, 7:13 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Woods	47 min
Apr 30, 7:14 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Woods	46 min
Apr 30, 7:15 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	30 min
Apr 30, 7:19 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	41 min
Apr 30, 7:20 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	40 min
Apr 30, 7:27 PM CDT	Tornado Warning Tornado observed	OUN	Tillman	48 min
Apr 30, 7:36 PM CDT	Tornado Warning	OUN	Comanche, Jackson, Kiowa	39 min
Apr 30, 7:41 PM CDT	Flash Flood Warning	OUN	Kiowa, Tillman	3 hr
Apr 30, 7:41 PM CDT	Tornado Warning	OUN	Jackson, Kiowa, Tillman	34 min
Apr 30, 7:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Alfalfa, Grant	39 min
Apr 30, 8:03 PM CDT	Special Weather Statement	OUN	Blaine	27 min
Apr 30, 8:03 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Caddo, Comanche, Kiowa	42 min
Apr 30, 8:05 PM CDT	Tornado Warning	OUN	Caddo, Comanche, Kiowa	40 min
Apr 30, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	49 min
Apr 30, 8:14 PM CDT	Tornado Warning	OUN	Tillman	46 min
Apr 30, 8:17 PM CDT	Flash Flood Warning	OUN	Comanche, Kiowa	3 hr
Apr 30, 8:19 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	41 min
Apr 30, 8:22 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Kay	53 min
Apr 30, 8:24 PM CDT	Tornado Warning	OUN	Caddo, Comanche	36 min
Apr 30, 8:49 PM CDT	Severe Thunderstorm Warning	OUN	Kay	41 min
Apr 30, 8:55 PM CDT	Tornado Warning	OUN	Caddo	26 min
Apr 30, 8:59 PM CDT	Tornado Warning	OUN	Tillman	46 min
Apr 30, 9:00 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Jackson, Kiowa	45 min
Apr 30, 9:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Kiowa, Tillman	44 min
Apr 30, 9:07 PM CDT	Tornado Warning	OUN	Comanche, Kiowa, Tillman	53 min
Apr 30, 9:10 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Kay	50 min
Apr 30, 9:22 PM CDT	Severe Thunderstorm Warning	OUN	Kay	38 min
Apr 30, 9:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Jackson, Kiowa, Tillman	50 min
Apr 30, 9:37 PM CDT	Special Weather Statement	OUN	Comanche, Grady	23 min
Apr 30, 9:44 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Comanche, Cotton, Tillman	46 min
Apr 30, 9:47 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	43 min
Apr 30, 9:55 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	50 min
Apr 30, 9:59 PM CDT	Flash Flood Warning	OUN	Comanche	3 hr
Apr 30, 10:08 PM CDT	Flash Flood Warning	OUN	Alfalfa, Grant	3 hr
Apr 30, 10:08 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	52 min
Apr 30, 10:10 PM CDT	Tornado Warning	OUN	Cotton, Tillman	50 min
Apr 30, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	47 min
Apr 30, 10:20 PM CDT	Tornado Warning	OUN	Tillman	40 min
Apr 30, 10:41 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	49 min
Apr 30, 10:47 PM CDT	Flash Flood Warning	OUN	Comanche, Cotton, Tillman	3 hr
Apr 30, 10:49 PM CDT	Tornado Warning	OUN	Cotton, Tillman	41 min
Apr 30, 10:52 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Kay, Noble	23 min
Apr 30, 11:04 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	26 min
Apr 30, 11:06 PM CDT	Tornado Warning	OUN	Jefferson, Stephens	39 min
Apr 30, 11:13 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens, Tillman	62 min
Apr 30, 11:19 PM CDT	Flash Flood Warning	OUN	Carter, Murray	3 hr
Apr 30, 11:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Garfield, Kay, Noble	38 min
Apr 30, 11:26 PM CDT	Flash Flood Warning	OUN	Comanche, Cotton, Stephens	3 hr
Apr 30, 11:34 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Murray	41 min
Apr 30, 11:38 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	35 min
Apr 30, 11:51 PM CDT	Areal Flood Advisory	OUN	Grant, Kay	3 hr
Apr 30, 11:55 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	34 min
May 1, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Johnston, Love, Marshall, Murray	44 min
May 1, 12:06 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson	39 min
May 1, 12:31 AM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant, Kay, Noble	3 hr
May 1, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall, Murray	45 min
May 1, 12:47 AM CDT	Special Weather Statement	OUN	Jefferson	28 min
May 1, 1:08 AM CDT	Special Weather Statement	OUN	Love	37 min
May 1, 1:27 AM CDT	Special Weather Statement	OUN	Marshall	33 min
May 1, 1:51 AM CDT	Special Weather Statement	OUN	Bryan	39 min
May 1, 2:13 AM CDT	Special Weather Statement	OUN	Garfield	32 min
May 1, 3:07 AM CDT	Special Weather Statement	OUN	Garfield	38 min
May 1, 4:18 AM CDT	Special Weather Statement	OUN	Canadian	27 min
May 1, 4:24 AM CDT	Special Weather Statement	OUN	Blaine	36 min
May 1, 5:01 AM CDT	Special Weather Statement	OUN	Kingfisher	29 min
May 1, 5:05 AM CDT	Special Weather Statement	OUN	Grant	25 min
May 1, 5:33 AM CDT	Special Weather Statement	OUN	Canadian	27 min
May 1, 5:34 AM CDT	Special Weather Statement	OUN	Grant	26 min
May 1, 5:55 AM CDT	Severe Thunderstorm Warning	OUN	Grady	20 min
May 1, 6:16 AM CDT	Severe Thunderstorm Warning	OUN	Garvin	16 min
May 1, 6:34 AM CDT	Special Weather Statement	OUN	Garvin, McClain	26 min
May 1, 6:57 AM CDT	Special Weather Statement	OUN	Canadian, Cleveland, Garvin, Grady, Johnston, McClain and 2 more	33 min
May 1, 7:36 AM CDT	Special Weather Statement	OUN	Grady	24 min
May 1, 8:38 AM CDT	Areal Flood Advisory	OUN	Cleveland, McClain	3 hr
May 1, 8:49 AM CDT	Special Weather Statement	OUN	Cleveland	26 min
May 1, 8:59 AM CDT	Special Weather Statement	OUN	Coal	31 min
May 1, 9:13 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	47 min
May 1, 9:29 AM CDT	Special Weather Statement	OUN	Atoka	31 min
May 1, 9:46 AM CDT	Special Weather Statement	OUN	Coal	29 min

Nearby

Tornado Warnings in Oklahoma, 2024 Every tornado warning in 2024 Tornadoes 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.