Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 512, NWS Norman, OK

June 15, 2017Ellis County, Woodward County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 15, 2017, 5:03 PM CDT for Ellis County, Woodward County, Oklahoma. It was in force for 42 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: Jun 15, 2017, 5:03 PM CDT (22:03 UTC)
Expired: Jun 15, 2017, 5:45 PM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Ellis County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 132 km from the middle of the area, began a volume at 22:04 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
Jun 15, 2:20 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 10.1 hours before the alert went out and 165 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: 3017 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

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 Jun 15, 3:54 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Jun 15, 3:54 PM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, Jun 15, 11:49 AM CDT, 5 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
1149 AM CDT Thu Jun 15 2017

OKZ004>048-050>052-TXZ083>090-161230-
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-
1149 AM CDT Thu Jun 15 2017

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

.DAY ONE...This Afternoon and Tonight...

.Thunderstorm Outlook...
There is a moderate risk of severe thunderstorms across far north
central Oklahoma. There is an enhanced risk across the rest of
northern and western Oklahoma and far western north Texas, while a
slight risk surrounds the enhanced risk.

Location...
The moderate risk is located along and north of a line from near
the Great Salt Plains Lake to Lamont to Ponca City. The enhanced
risk is along and north of a line from Cushing to Hitchcock to
Clinton to Goodlett, Texas up to the moderate risk. The slight
risk extends north of a line from Knox City, Texas to Frederick to
Lawton to Sulphur to Stringtown up to the enhanced risk.

Timing...
The most likely time for severe weather will be from 4 PM to 2
AM.

Impacts...
Hail up to the size of tennis balls and wind gusts over 70 mph
will be possible.

Discussion...
Scattered thunderstorms are expected to develop this afternoon
across the Texas Panhandle. Into the late afternoon, this activity
will build eastward into western north Texas and western Oklahoma.
Additionally, storms will develop over central and southern Kansas
and potentially as far south as northern Oklahoma this afternoon.
Large, damaging, hail and damaging wind gusts are possible through
the evening, with these storms. Storms in Kansas are expected to
merge into a complex, moving east and southeast into northeastern
Oklahoma, clipping far north central Oklahoma. Damaging wind gusts
are the primary concern with the complex, along with large hail
and isolated flash flooding due to locally heavy rainfall.

.Heat...
Widespread heat indices from around 100 to 105 degrees are
expected late this afternoon. Be sure to drink plenty of water
and take frequent breaks when working or playing outside.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Thunderstorms...
Thunderstorm chances will return Saturday night across
northeastern Oklahoma, and continue Sunday into Monday across much
of Oklahoma and western north Texas. A few strong to severe
storms will be possible.

.Heat...
Widespread heat indices from around 101 to 108 degrees are
expected late Saturday afternoon. Be sure to drink plenty of
water and take frequent breaks when working or playing outside.

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

Kurtz

In the hours before

Local storm report, Jun 15, 11:20 AM CDT, 5 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1120 AM CDT THU JUN 15 2017

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

1055 AM     HAIL             YEAGER                  35.16N 96.34W
06/15/2017  E1.00 INCH       HUGHES             OK   EMERGENCY MNGR

&&

DW

Special weather statement, Jun 15, 11:43 AM CDT, 5 hours 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1143 AM CDT THU JUN 15 2017

OKZ030-031-151715-
Pottawatomie OK-Seminole OK-
1143 AM CDT THU JUN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Pottawatomie and
northern Seminole Counties Until 1215 PM CDT...

AT 1142 AM CDT, a strong thunderstorm was located 4 miles northeast
of Little, moving southeast at 10 MPH.

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

Locations impacted include...
Cromwell, Little and Centerview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3531 9665 3542 9675 3546 9663 3540 9662
      3540 9660 3541 9658 3540 9657 3540 9656
      3539 9655 3539 9654 3541 9654 3544 9657
      3545 9655 3545 9654 3538 9644 3533 9644
TIME...MOT...LOC 1642Z 325DEG 9KT 3540 9664

11

Special weather statement, Jun 15, 12:13 PM CDT, 4 hours 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1213 PM CDT THU JUN 15 2017

OKZ026-151745-
Lincoln OK-
1213 PM CDT THU JUN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR southeastern Lincoln County Until
1245 PM CDT...

AT 1211 PM CDT, a strong thunderstorm was located just north of
Sparks. This storm was nearly stationary.

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3547 9688 3564 9696 3575 9678 3563 9662
      3561 9662
TIME...MOT...LOC 1711Z 177DEG 1KT 3564 9683

11

Special weather statement, Jun 15, 12:23 PM CDT, 4 hours 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1223 PM CDT THU JUN 15 2017

OKZ031-151800-
Seminole OK-
1223 PM CDT THU JUN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR central Seminole County Until 100
PM CDT...

AT 1221 PM CDT, a strong thunderstorm was located near Seminole,
moving southeast at 15 MPH.

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

Locations impacted include...
Seminole, Wewoka, Bowlegs and Lima.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3509 9662 3527 9671 3533 9655 3520 9644
      3518 9644
TIME...MOT...LOC 1721Z 325DEG 12KT 3527 9663

11

Special weather statement, Jun 15, 4:44 PM CDT, 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
444 PM CDT THU JUN 15 2017

OKZ009-152230-
Ellis OK-
444 PM CDT THU JUN 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR central Ellis County Until
530 PM CDT...

AT 441 PM CDT, a strong thunderstorm was located near Higgins, moving
northeast at 35 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...

Locations impacted include...
Shattuck, Arnett, Gage and Harmon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3640 9973 3623 9960 3617 9960 3616 9955
      3601 9944 3599 9981 3600 9982 3601 9985
      3599 9987 3598 9999 3623 10000
TIME...MOT...LOC 2141Z 242DEG 30KT 3608 9999

MBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 7:53 PM CDT	Special Weather Statement	OUN	Custer	37 min
Jun 14, 8:29 PM CDT	Special Weather Statement	OUN	Custer	31 min
Jun 14, 8:34 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	27 min
Jun 14, 9:25 PM CDT	Special Weather Statement	OUN	Major	35 min
Jun 15, 8:38 AM CDT	Special Weather Statement	OUN	Lincoln	22 min
Jun 15, 8:41 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	49 min
Jun 15, 9:38 AM CDT	Special Weather Statement	OUN	Lincoln	37 min
Jun 15, 9:41 AM CDT	Special Weather Statement	OUN	Okfuskee	34 min
Jun 15, 9:59 AM CDT	Special Weather Statement	OUN	Lincoln	31 min
Jun 15, 10:02 AM CDT	Severe Thunderstorm Warning	OUN	Hughes, Seminole	58 min
Jun 15, 10:25 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	50 min
Jun 15, 10:44 AM CDT	Severe Thunderstorm Warning	OUN	Hughes	61 min
Jun 15, 11:10 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	50 min
Jun 15, 11:15 AM CDT	Areal Flood Advisory	OUN	Lincoln	3 hr
Jun 15, 11:43 AM CDT	Special Weather Statement	OUN	Seminole	32 min
Jun 15, 12:13 PM CDT	Special Weather Statement	OUN	Lincoln	32 min
Jun 15, 12:21 PM CDT	Flash Flood Warning	OUN	Lincoln	4 hr
Jun 15, 12:23 PM CDT	Special Weather Statement	OUN	Seminole	37 min
Jun 15, 4:44 PM CDT	Special Weather Statement	OUN	Ellis	46 min
Jun 15, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woodward	38 min
Jun 15, 6:08 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	52 min
Jun 15, 6:09 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	51 min
Jun 15, 6:29 PM CDT	Areal Flood Advisory	OUN	Ellis	3 hr
Jun 15, 6:56 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	49 min
Jun 15, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	32 min
Jun 15, 5:56 PM CDT	Special Weather Statement	OUN	Hardeman	34 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

Sources

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