Alert archive / Oklahoma / Tornado Warnings in 2019

Tornado Warning 30, NWS Norman, OK

May 1, 2019Marshall County, Oklahoma

NWS Norman, OK issued this tornado warning at May 1, 2019, 5:30 PM CDT for Marshall County, Oklahoma. It was in force for 30 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 1, 2019, 5:30 PM CDT (22:30 UTC)
Expired: May 1, 2019, 6:00 PM CDT
In force: 30 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Marshall County, OK

The radar

The Norman radar (KTLX), 154 km from the middle of the area, began a volume at 22:33 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 1, 5:56 PM CDT	HAIL 0.88	Sse Kingston, 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 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
May 1, 1:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.5 hours before the alert went out and 146 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: 2939 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 11.1

Open this sounding in Storm Lab

The text

As transmitted.

533 
WFUS54 KOUN 012230
TOROUN
OKC095-012300-
/O.NEW.KOUN.TO.W.0030.190501T2230Z-190501T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
530 PM CDT Wed May 1 2019

The National Weather Service in Norman has issued a

* Tornado Warning for...
  Northeastern Marshall County in southeastern Oklahoma...

* Until 600 PM CDT.
    
* At 530 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 4 miles west of Kingston, moving east at 30 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...
  Madill, Kingston, Little City and eastern Lake Texoma. 

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3406 9686 3416 9665 3409 9658 3401 9658
      3401 9659 3402 9660 3401 9660 3401 9662
      3400 9663 3396 9685
TIME...MOT...LOC 2230Z 252DEG 28KT 3402 9680 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

11

1 follow-up statement

113 
WWUS54 KOUN 012250
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
550 PM CDT Wed May 1 2019

OKC095-012300-
/O.CON.KOUN.TO.W.0030.000000T0000Z-190501T2300Z/
Marshall OK-
550 PM CDT Wed May 1 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHEASTERN MARSHALL COUNTY...
    
At 549 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles northeast of Kingston, moving northeast at 20
mph.

HAZARD...Tornado and quarter 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...
Little City and eastern Lake Texoma. 

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3416 9665 3409 9658 3401 9658 3401 9659
      3402 9660 3401 9660 3401 9662 3400 9663
      3399 9667 3412 9674
TIME...MOT...LOC 2249Z 246DEG 18KT 3406 9669 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

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 May 1, 3:29 PM CDT, 2 hours 1 minute earlier.

Area forecast discussion, May 1, 3:29 PM CDT, 2 hours 1 minute before

Area Forecast Discussion
National Weather Service Norman OK
329 PM CDT Wed May 1 2019

.DISCUSSION...
Very strong instability and a couple of surface boundaries have
led to the development of numerous strong/severe thunderstorms
across western north Texas...into south-central Oklahoma. This
area of storms will most likely weaken over the next several
hours, as additional storms form on their periphery. The severe
weather threat will diminish slowly this evening as the near-
surface inversion sets in. As a cold front moves into Oklahoma
tonight, it will bring another relatively high chance for
thunderstorms to the northwest 2/3 or so of Oklahoma. As it
continues south on Thursday, it will reduce the chances for
showers/thunderstorms well behind it. The risk of severe storms
appears to be restricted to the near-Red River parts of our
forecast area tomorrow.

Existing wet ground conditions, plus the expectation of heavy rain
and some training with this evening's storms, warrants maintaining
the Flood Watch that we issued earlier today.

Somewhat cooler and drier air will continue to advance slowly
into Oklahoma/north Texas on Friday and Saturday. An upper/mid-
level wave passing through the southeast part of our forecast area
on Friday will result in higher rain chances on Friday, but with
less instability, the severe weather risk will be relatively low.

The weekend should be mild, with only low chances for rain, but
returning moisture will raise rain chances again early next week.
Depending on what actually happens, there may be another risk of
severe weather around Wednesday. Models differ too much by that
time to make any definitive forecasts at this point, however.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  58  67  58  70 /  70  30  40  60
Hobart OK         56  64  56  70 /  70  20  50  70
Wichita Falls TX  63  73  61  73 /  50  40  50  60
Gage OK           46  61  49  69 /  60  10  50  60
Ponca City OK     55  66  56  70 /  60  30  40  50
Durant OK         64  77  62  73 /  70  50  40  70

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Flood Watch through Thursday morning for OKZ023>032-037>048-
     050>052.

TX...Flood Watch through Thursday morning for TXZ085-086-088>090.

&&

12/23

Hazardous weather outlook, May 1, 3:42 PM CDT, 1 hour 48 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
342 PM CDT Wed May 1 2019

OKZ004>048-050>052-TXZ083>090-021000-
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-
342 PM CDT Wed May 1 2019

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

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

.Thunderstorms...
There is an enhanced risk of severe thunderstorms today across south
central Oklahoma and an adjacent part of northern Texas. There is a
slight risk for the rest of southern Oklahoma and part of east
central Oklahoma. A marginal risk exists over the rest of Oklahoma
except for a small part of north central.

Location...
The enhanced risk includes areas southeast of Seymour, Wichita
Falls, and Duncan. The slight risk includes areas southeast of
Altus, Chickasha, Norman, and Prague.

Timing...
Storms are expected to until midnight.

Impacts...
Hail up to the size of baseballs.
Damaging winds up to 70 mph.
A few tornadoes.
Excessive rainfall with flash flooding.

.Heavy Rain...
Heavy rainfall is expected to cause flooding across south central
and southeastern Oklahoma. Flooding is most likely in areas that
have saturated ground from previous rain.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

.Thunderstorms...
Thunderstorms are expected across southern Oklahoma and northern
Texas Thursday, and again Friday through the weekend.

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 1, 5:07 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
507 PM CDT WED MAY 1 2019

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

0459 PM     HAIL             1 SSW BLANCHARD         35.13N 97.67W
05/01/2019  E1.00 INCH       MCCLAIN            OK   PUBLIC

            MPING REPORT

&&

JT

Local storm report, May 1, 5:10 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
510 PM CDT WED MAY 1 2019

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

0507 PM     HAIL             1 W BLANCHARD           35.14N 97.67W
05/01/2019  E1.50 INCH       MCCLAIN            OK   EMERGENCY MNGR

&&

JP

Local storm report, May 1, 5:12 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
512 PM CDT WED MAY 1 2019

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

0511 PM     HAIL             2 W LEBANON             33.98N 96.94W
05/01/2019  E1.00 INCH       LOVE               OK   PUBLIC

&&

JP

Local storm report, May 1, 5:13 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
513 PM CDT WED MAY 1 2019

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

0507 PM     HAIL             1 W BLANCHARD           35.15N 97.68W
05/01/2019  E1.50 INCH       GRADY              OK   EMERGENCY MNGR

&&

JT

Local storm report, May 1, 5:20 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
520 PM CDT WED MAY 1 2019

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

0518 PM     HAIL             BRIDGE CREEK            35.23N 97.72W
05/01/2019  E1.00 INCH       GRADY              OK   EMERGENCY MNGR

&&

JP

Local storm report, May 1, 5:24 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
524 PM CDT WED MAY 1 2019

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

0519 PM     HAIL             2 SW MADILL             34.07N 96.80W
05/01/2019  E1.00 INCH       MARSHALL           OK   EMERGENCY MNGR

0521 PM     HAIL             2 S TUTTLE              35.26N 97.81W
05/01/2019  E1.75 INCH       GRADY              OK   EMERGENCY MNGR

&&

JT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:00 PM CDT	Special Weather Statement	OUN	Caddo	30 min
Apr 30, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie, Seminole	43 min
Apr 30, 7:14 PM CDT	Flash Flood Warning	OUN	Cleveland, McClain, Pottawatomie	3 hr
Apr 30, 7:22 PM CDT	Flash Flood Warning	OUN	Carter, Cotton, Garvin, Grady, Jefferson, McClain and 1 more	3 hr
Apr 30, 7:46 PM CDT	Special Weather Statement	OUN	Cotton	29 min
Apr 30, 7:49 PM CDT	Special Weather Statement	OUN	Comanche	26 min
Apr 30, 7:51 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson	39 min
Apr 30, 7:53 PM CDT	Areal Flood Advisory	OUN	Comanche, Cotton	2 hr
Apr 30, 8:20 PM CDT	Areal Flood Advisory	OUN	Garvin, Hughes, McClain, Pontotoc, Pottawatomie, Seminole	115 min
Apr 30, 8:28 PM CDT	Special Weather Statement	OUN	Jefferson	32 min
Apr 30, 8:35 PM CDT	Areal Flood Advisory	OUN	Carter, Cotton, Garvin, Jefferson, Murray, Pontotoc and 1 more	3 hr
Apr 30, 8:35 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	40 min
Apr 30, 8:59 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Carter, Coal, Jefferson, Johnston and 3 more	3 hr
Apr 30, 9:07 PM CDT	Tornado Warning	OUN	Atoka, Bryan	23 min
Apr 30, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston	48 min
Apr 30, 9:14 PM CDT	Tornado Warning	OUN	Atoka, Coal	46 min
Apr 30, 9:22 PM CDT	Flash Flood Warning	OUN	Carter, Murray	3 hr
Apr 30, 9:25 PM CDT	Tornado Warning Tornado observed	OUN	Atoka, Bryan	50 min
Apr 30, 9:44 PM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc, Seminole	3 hr
Apr 30, 9:52 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes	18 min
Apr 30, 10:16 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	44 min
Apr 30, 10:31 PM CDT	Areal Flood Warning	OUN	Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more	3 hr
Apr 30, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	42 min
Apr 30, 11:24 PM CDT	Flash Flood Warning	OUN	Atoka, Carter, Coal, Johnston, Murray	4 hr
Apr 30, 11:26 PM CDT	Special Weather Statement	OUN	Jackson	34 min
Apr 30, 11:39 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	51 min
Apr 30, 11:54 PM CDT	Flash Flood Warning	OUN	Atoka, Coal	4 hr
May 1, 12:07 AM CDT	Special Weather Statement	OUN	Kiowa	23 min
May 1, 12:37 AM CDT	Special Weather Statement	OUN	Comanche	23 min
May 1, 12:50 AM CDT	Special Weather Statement	OUN	Kiowa	25 min
May 1, 1:04 AM CDT	Special Weather Statement	OUN	Hughes, Seminole	26 min
May 1, 1:05 AM CDT	Special Weather Statement	OUN	Comanche	25 min
May 1, 1:07 AM CDT	Special Weather Statement	OUN	Comanche	23 min
May 1, 1:18 AM CDT	Areal Flood Advisory	OUN	Comanche	117 min
May 1, 1:24 AM CDT	Special Weather Statement	OUN	Grady, Stephens	36 min
May 1, 1:48 AM CDT	Special Weather Statement	OUN	Cleveland, McClain	27 min
May 1, 1:56 AM CDT	Areal Flood Advisory	OUN	Stephens	2 hr
May 1, 2:04 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain	26 min
May 1, 2:06 AM CDT	Special Weather Statement	OUN	Cleveland	24 min
May 1, 2:24 AM CDT	River Flood Warning	OUN	Comanche, Cotton	26 hr
May 1, 2:35 AM CDT	River Flood Warning	OUN	Bryan	3 days
May 1, 2:35 AM CDT	Special Weather Statement	OUN	Garvin, Murray, Pottawatomie	25 min
May 1, 2:37 AM CDT	River Flood Warning	OUN	Atoka	27 hr
May 1, 3:05 AM CDT	Special Weather Statement	OUN	Murray	25 min
May 1, 3:07 AM CDT	Special Weather Statement	OUN	Hughes, Seminole	23 min
May 1, 3:27 AM CDT	Areal Flood Warning	OUN	Atoka, Carter, Coal, Johnston, Murray	3 hr
May 1, 3:43 AM CDT	Special Weather Statement	OUN	Murray	32 min
May 1, 4:55 AM CDT	Flash Flood Warning	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc	3 hr
May 1, 6:26 AM CDT	Flash Flood Warning	OUN	Atoka, Coal	3 hr
May 1, 9:06 AM CDT	River Flood Warning	OUN	Cotton	11 hr
May 1, 10:25 AM CDT	Special Weather Statement	OUN	Coal	35 min
May 1, 11:08 AM CDT	Special Weather Statement	OUN	Atoka	37 min
May 1, 12:23 PM CDT	Special Weather Statement	OUN	Stephens	22 min
May 1, 12:39 PM CDT	Special Weather Statement	OUN	Garvin	21 min
May 1, 12:52 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	38 min
May 1, 12:58 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Stephens	47 min
May 1, 1:18 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	42 min
May 1, 1:29 PM CDT	Tornado Warning Tornado observed	OUN	Jefferson	31 min
May 1, 1:37 PM CDT	Tornado Warning	OUN	Garvin	53 min
May 1, 1:41 PM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Grady, Jefferson, Stephens	3 hr
May 1, 1:41 PM CDT	Tornado Warning	OUN	Cotton, Jefferson, Stephens	19 min
May 1, 1:54 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	51 min
May 1, 1:58 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain	47 min
May 1, 2:01 PM CDT	Tornado Warning	OUN	Carter, Jefferson, Stephens	44 min
May 1, 2:02 PM CDT	Severe Thunderstorm Warning	OUN	Stephens	43 min
May 1, 2:10 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson	50 min
May 1, 2:27 PM CDT	Severe Thunderstorm Warning	OUN	McClain	33 min
May 1, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain	29 min
May 1, 2:42 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pottawatomie	20 min
May 1, 2:43 PM CDT	Flash Flood Warning	OUN	Carter, Garvin, Grady, Stephens	3 hr
May 1, 2:43 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	20 min
May 1, 2:47 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Stephens	58 min
May 1, 2:49 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	41 min
May 1, 2:54 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	30 min
May 1, 2:57 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	12 min
May 1, 3:18 PM CDT	Tornado Warning	OUN	Carter, Stephens	27 min
May 1, 3:19 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	41 min
May 1, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	66 min
May 1, 3:42 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	48 min
May 1, 3:48 PM CDT	Tornado Warning	OUN	Carter, Stephens	27 min

Nearby

Tornado Warnings in Oklahoma, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.