Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 343, NWS Norman, OK

June 13, 2018Jackson County, Kiowa County, Tillman County, Oklahoma; Wilbarger County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 2018, 6:10 PM CDT for Jackson County, Kiowa County, Tillman County, Oklahoma; Wilbarger County, Texas. It was in force for 50 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 13, 2018, 6:10 PM CDT (23:10 UTC)
Expired
Jun 13, 2018, 7:00 PM CDT
In force
50 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Jackson County, OK, Kiowa County, OK, Tillman County, OK, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 21 km from the middle of the area, began a volume at 23:12 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.2 hours before the alert went out and 178 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2018-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1438 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2018-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1438 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1192 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
-5 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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 13, 5:58 PM CDT, 12 minutes earlier.

Area forecast discussion, Jun 13, 5:58 PM CDT, 12 minutes before
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Hazardous weather outlook, Jun 13, 11:51 AM CDT, 6 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Norman OK
1151 AM CDT Wed Jun 13 2018

OKZ004>048-050>052-TXZ083>090-141700-
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-
1151 AM CDT Wed Jun 13 2018

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Thunderstorm chances will be very low today, but an isolated and
brief storm cannot be ruled out during the heat of the day. If
storms do occur, severe weather will be unlikely.

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

.Thunderstorms...
Thunderstorm chances will return late Sunday and continue through
early next week. Heavy rain will be the primary hazard.

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

Mahale

In the hours before

Special weather statement, Jun 13, 3:57 PM CDT, 2 hours 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
357 PM CDT WED JUN 13 2018

OKZ018-132130-
Kingfisher OK-
357 PM CDT WED JUN 13 2018

...SIGNIFICANT WEATHER ADVISORY FOR central Kingfisher County Until
430 PM CDT...

AT 356 PM CDT, a strong thunderstorm was located 5 miles northeast of
Kingfisher, moving north at 10 MPH.

HAZARDS INCLUDE...
Wind gusts to 45 MPH...

LAT...LON 3583 9770 3578 9808 3599 9809 3607 9772
TIME...MOT...LOC 2056Z 165DEG 7KT 3589 9785

SIX
Special weather statement, Jun 13, 5:00 PM CDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
500 PM CDT WED JUN 13 2018

OKZ035>037-132230-
Kiowa OK-Tillman OK-Jackson OK-
500 PM CDT WED JUN 13 2018

...SIGNIFICANT WEATHER ADVISORY FOR south central Kiowa...
northwestern Tillman and northeastern Jackson Counties Until 530 PM
CDT...

AT 457 PM CDT, a strong thunderstorm was located 4 miles east of
Humphreys, moving north at 5 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 40 MPH...

LAT...LON 3447 9906 3453 9927 3475 9925 3468 9894
TIME...MOT...LOC 2157Z 194DEG 4KT 3456 9916

SIX
Special weather statement, Jun 13, 5:09 PM CDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
509 PM CDT WED JUN 13 2018

TXZ085-132245-
Wilbarger TX-
509 PM CDT WED JUN 13 2018

...SIGNIFICANT WEATHER ADVISORY FOR central Wilbarger County Until
545 PM CDT...

AT 502 PM CDT, a strong thunderstorm was located near Vernon, moving
north at 5 to 10 MPH.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts 40 to 50 MPH...

LAT...LON 3429 9936 3422 9919 3421 9919 3421 9915
      3418 9908 3402 9921 3407 9942
TIME...MOT...LOC 2202Z 194DEG 4KT 3412 9930

SIX
Special weather statement, Jun 13, 5:27 PM CDT, 43 minutes before
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Special weather statement, Jun 13, 5:55 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
555 PM CDT WED JUN 13 2018

OKZ035>037-132330-
Kiowa OK-Tillman OK-Jackson OK-
555 PM CDT WED JUN 13 2018

...SIGNIFICANT WEATHER ADVISORY FOR south central Kiowa...
northwestern Tillman and eastern Jackson Counties Until 630 PM CDT...

AT 549 PM CDT, a strong thunderstorm was located 4 miles northeast
of Tipton, moving north at 5 MPH.  Other small thunderstorms were
located near Altus and Martha.  With temperatures still in the upper
90s, rather strong wind gusts will occur with some of these storms
through 630 pm.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...

LAT...LON 3438 9901 3449 9934 3457 9945 3476 9942
      3470 9883
TIME...MOT...LOC 2249Z 192DEG 6KT 3454 9906

SIX
Special weather statement, Jun 13, 5:57 PM CDT, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 7:15 PM CDTSevere Thunderstorm WarningOUNHarper60 min
Jun 12, 7:34 PM CDTFlash Flood WarningOUNHarper3 hr
Jun 12, 8:15 PM CDTSpecial Weather StatementOUNHarper45 min
Jun 12, 9:22 PM CDTSpecial Weather StatementOUNEllis23 min
Jun 12, 10:22 PM CDTSpecial Weather StatementOUNWoodward38 min
Jun 12, 10:36 PM CDTSpecial Weather StatementOUNGrant39 min
Jun 12, 11:27 PM CDTSpecial Weather StatementOUNDewey33 min
Jun 12, 11:45 PM CDTSevere Thunderstorm WarningOUNDewey60 min
Jun 13, 12:13 AM CDTSpecial Weather StatementOUNRoger Mills32 min
Jun 13, 12:41 AM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey64 min
Jun 13, 12:53 AM CDTSpecial Weather StatementOUNBeckham37 min
Jun 13, 1:15 AM CDTSevere Thunderstorm WarningOUNCuster60 min
Jun 13, 1:18 AM CDTSpecial Weather StatementOUNRoger Mills27 min
Jun 13, 1:54 AM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Roger Mills, Washita66 min
Jun 13, 2:07 AM CDTFlash Flood WarningOUNBeckham, Custer, Roger Mills, Washita3 hr
Jun 13, 2:17 AM CDTSpecial Weather StatementOUNGreer, Harmon28 min
Jun 13, 2:43 AM CDTSpecial Weather StatementOUNGreer, Harmon, Jackson32 min
Jun 13, 2:55 AM CDTAreal Flood AdvisoryOUNBeckham, Greer, Harmon3 hr
Jun 13, 3:01 AM CDTSpecial Weather StatementOUNGreer, Harmon, Jackson, Kiowa29 min
Jun 13, 3:29 AM CDTSpecial Weather StatementOUNKiowa31 min
Jun 13, 3:57 PM CDTSpecial Weather StatementOUNKingfisher33 min
Jun 13, 4:21 PM CDTSevere Thunderstorm WarningOUNKingfisher39 min
Jun 13, 4:54 PM CDTSevere Thunderstorm WarningOUNKingfisher36 min
Jun 13, 5:00 PM CDTSpecial Weather StatementOUNJackson30 min
Jun 13, 5:24 PM CDTSevere Thunderstorm WarningOUNJackson, Tillman51 min
Jun 13, 5:27 PM CDTSpecial Weather StatementOUNBlaine33 min
Jun 13, 5:55 PM CDTSpecial Weather StatementOUNJackson35 min
Jun 13, 5:57 PM CDTSpecial Weather StatementOUNBlaine33 min
Jun 13, 6:15 PM CDTSpecial Weather StatementOUNWashita30 min
Jun 13, 6:43 PM CDTSpecial Weather StatementOUNComanche32 min
Jun 13, 5:09 PM CDTSpecial Weather StatementOUNWilbarger36 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2018Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018

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.