Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 137, NWS Norman, OK

April 30, 2019Cotton County, Jefferson County, Oklahoma; Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 30, 2019, 7:51 PM CDT for Cotton County, Jefferson County, Oklahoma; Clay County, Texas. It was in force for 39 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 30, 2019, 7:51 PM CDT (00:51 UTC)
Expired: Apr 30, 2019, 8:30 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Cotton County, OK, Jefferson County, OK, Clay County, TX

The radar

The Altus AFB radar (KFDR), 84 km from the middle of the area, began a volume at 00:52 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 30, 12:02 PM CDT	Tornado Watch	SPC	13 hr
Apr 30, 2:19 PM CDT	Tornado Watch	SPC	9 hr

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 30, 7:21 PM CDT, 30 minutes earlier.

Area forecast discussion, Apr 30, 7:21 PM CDT, 30 minutes before

Area Forecast Discussion
National Weather Service Norman OK
721 PM CDT Tue Apr 30 2019

.SYNOPSIS...

&&

.DISCUSSION...
Thunderstorms will persist this evening along a slowly-moving cold
front from southwest into northeast Oklahoma. It will remain south
of Oklahoma City and Lawton. IFR conditions north of the front are
expected much of the night with some light fog. MVFR conditions
will exist at times south of the front and away from the
thunderstorms. Ceilings will lift or clear by midday Wednesday in
most areas.

&&

.PREV DISCUSSION... /issued 236 PM CDT Tue Apr 30 2019/

DISCUSSION...
Active weather going on this afternoon, so will keep this brief.
Scattered to numerous thunderstorms should continue into early
evening. Expectation is for convection to consolidate along the
front the evening and then move eastward from there. Severe hail,
winds, and a tornado or two are all threats.

With ample moisture in place, convection may continue overnight
over southeast Oklahoma as the shortwave makes its way out. Will
keep the flood watch going with some slight adjustment (bringing
it south to the border).

General trend is for the models to retreat the front Wednesday
afternoon into northern Oklahoma (with the exception of the NAM).
Models suggest some convection may form in southeast Oklahoma as a
vorticity maximum passes over that area of abundant moisture
tomorrow evening. At the same time a cold front will surge south
from Kansas bringing precipitation chances with it overnight into
Thursday morning.

Synoptic pattern remains active into next week, though details
are a bit fuzzy.

Day

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  60  79  59  69 /  60  30  40  30
Hobart OK         57  81  57  66 /  30  20  30  10
Wichita Falls TX  64  82  62  75 /  50  40  20  30
Gage OK           51  79  49  65 /  20  10  30  10
Ponca City OK     57  75  58  68 /  50  20  60  30
Durant OK         66  79  63  77 /  80  50  60  60

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Flood Watch until 7 AM CDT Wednesday for OKZ019-020-023>032-
     037>048-050>052.

TX...Flood Watch until 7 AM CDT Wednesday for TXZ085-086-088>090.

&&

10/09

Hazardous weather outlook, Apr 30, 12:27 PM CDT, 7 hours 24 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1227 PM CDT Tue Apr 30 2019

OKZ004>048-050>052-TXZ083>090-011730-
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-
1227 PM CDT Tue Apr 30 2019

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

.DAY ONE...Through Tonight...

.Thunderstorms...
There is an enhanced risk of severe thunderstorms today across
the eastern half of Oklahoma. A slight risk covers the western
half of Oklahoma and western north Texas.

Location...
The enhanced risk area is generally along and east of a Stillwater
to Oklahoma City and Duncan line. The slight risk area is
generally west of the enhanced risk to the Oklahoma and Texas
state line.

Timing...
The most likely time for severe storms will be from now through
Midnight.

Impacts...
Hail up to the size of golf balls.
Damaging winds of 60 to 70 mph.
A few tornadoes possible.
Excessive rainfall with flooding possible.

Discussion...
Scattered to numerous storms are expected to continue through the
afternoon moving east through the evening. Large hail and damaging
wind gusts will be the main threats. For storms that form along or
south of the cold front, there is also a risk for a tornado or two
developing.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
the area should prepare for potential severe weather operations.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...
There is a slight risk of severe thunderstorms on Wednesday mainly
across the eastern half of Oklahoma. A marginal risk covers the
western half of Oklahoma and western north Texas. The most likely
time for severe weather will be during the afternoon and evening.

Thunderstorms remain in the forecast for Thursday through Monday.

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, Apr 30, 7:00 PM CDT, 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
700 PM CDT Tue Apr 30 2019

OKZ023-027-010030-
Grady OK-Caddo OK-
700 PM CDT Tue Apr 30 2019

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Grady and east
central Caddo Counties Until 730 PM CDT...

AT 659 PM CDT, a strong thunderstorm was located near Gracemont,
moving northeast at 30 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 40 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3538 9812 3530 9781 3508 9823 3517 9836
TIME...MOT...LOC 2359Z 225DEG 28KT 3517 9822

30

Special weather statement, Apr 30, 7:09 PM CDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
709 PM CDT Tue Apr 30 2019

TXZ085-088-010030-
Wilbarger TX-Baylor TX-
709 PM CDT Tue Apr 30 2019

...SIGNIFICANT WEATHER ADVISORY FOR southeastern Wilbarger and
northeastern Baylor Counties Until 730 PM CDT...

AT 708 PM CDT, a strong thunderstorm was located over southern Lake
Kemp, moving northeast at 25 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3378 9936 3397 9902 3384 9895 3370 9895
      3361 9927
TIME...MOT...LOC 0008Z 243DEG 23KT 3374 9924

BRB

Local storm report, Apr 30, 7:11 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
711 PM CDT TUE APR 30 2019

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

0709 PM     FLASH FLOOD      1 WSW SHAWNEE           35.33N 96.93W
04/30/2019                   POTTAWATOMIE       OK   TRAINED SPOTTER

            WATER COVERING ROADWAY ON KICKAPOO BETWEEN HIGHLAND AND
            BENEDICT STREETS.

&&

JT

Special weather statement, Apr 30, 7:33 PM CDT, 18 minutes before

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Special weather statement, Apr 30, 7:46 PM CDT, 5 minutes before

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Special weather statement, Apr 30, 7:49 PM CDT, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
749 PM CDT Tue Apr 30 2019

OKZ038-044-010115-
Cotton OK-Comanche OK-
749 PM CDT Tue Apr 30 2019

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Cotton and eastern
Comanche Counties Until 815 PM CDT...

AT 747 PM CDT, a strong thunderstorm was located near Faxon, moving
northeast at 55 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Minor flooding in areas of poor drainage...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3440 9866 3447 9866 3477 9839 3468 9814
      3454 9814 3429 9855
TIME...MOT...LOC 0047Z 229DEG 47KT 3442 9856

BRB

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, 7:53 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
May 1, 3:52 PM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Murray	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019 Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.