Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 299, NWS Norman, OK

May 13, 2016Kiowa County, Washita County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 13, 2016, 10:19 PM CDT for Kiowa County, Washita County, Oklahoma. It was in force for 41 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: May 13, 2016, 10:19 PM CDT (03:19 UTC)
Expired: May 13, 2016, 11:00 PM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kiowa County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 82 km from the middle of the area, began a volume at 03:22 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
May 13, 3:28 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.3 hours before the alert went out and 145 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2122 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 13, 6:45 PM CDT, 3 hours 34 minutes earlier.

Area forecast discussion, May 13, 6:45 PM CDT, 3 hours 34 minutes before

Area Forecast Discussion
National Weather Service Norman OK
645 PM CDT FRI MAY 13 2016

.DISCUSSION...

&&

.AVIATION...
A cold front with scattered thunderstorms will pass through
oklahoma this evening. winds will turn gusty to the north and
northeast, and mvfr ceilings are expected to form over central
Oklahoma tonight.

&&

.PREV DISCUSSION... /issued 222 PM CDT FRI MAY 13 2016/

DISCUSSION...
A prefrontal trough continues to make its way southward into NW OK
this afternoon. Cumulus are becoming more numerous along this
trough where inhibition is limited and mlcape has climbed to
around 1-1.5K J/kg, thanks to dewpoints in the mid to upper 50s.
Widely scattered storms are expected to develop before sunset and
then track southward overnight. A damaging wind and hail threat
will be possible with dewpoint depressions around 25 to 30 degrees
and steep mid level lapse rates in place. The best moisture
convergence still appears it will be over western and southwestern
OK through this evening so expect the highest coverage there.

Subsidence, through most of the layer, will follow the front
into the early morning hours tomorrow across our FA before subtle
WAA returns around 700 MB over northern OK through tomorrow
afternoon. A few showers/storms will remain possible here. WAA
will then increase substantially sunday as an 850 MB baroclinic
zone lifts northward over I-40 during the day and a mid level
perturbation moves under the ridge axis over the Rockies and into
the Southern Plains. Rain chances will increase as a result and
with cold air remaining in place, some locations may not climb out
of the 50s during the day Sun. Severe weather is not expected
given very little instability, although some localized heavy
rainfall may be possible based on moisture profiles. Precipitation
chances will continue through the work week with a mid to upper
trough remaining west of our area, although higher chances will
briefly shift east with the mid level thetae ridge late monday
night through early tuesday morning. heavier rain chances may
return to the Red River/western north TX by Tue and Wed, perhaps
continuing through the end of the work week before the trough
finally passes overhead. localized flash flooding appears
possible.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  52  61  49  60 /  40  20  40  60
Hobart OK         52  62  48  58 /  50  20  40  60
Wichita Falls TX  57  64  50  62 /  60  20  40  70
Gage OK           46  61  45  59 /  20  20  40  50
Ponca City OK     46  63  46  63 /  50  30  20  50
Durant OK         58  68  52  64 /  20  20  40  60

&&

.OUN Watches/Warnings/Advisories...
OK...None.
TX...None.
&&

26/09/09

Hazardous weather outlook, May 13, 10:10 PM CDT, 9 minutes before

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In the hours before

Local storm report, May 13, 9:05 PM CDT, 1 hour 14 minutes before

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Special weather statement, May 13, 9:12 PM CDT, 1 hour 7 minutes before

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Special weather statement, May 13, 9:33 PM CDT, 46 minutes before

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Special weather statement, May 13, 9:33 PM CDT, 46 minutes before

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Local storm report, May 13, 9:34 PM CDT, 45 minutes before

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Special weather statement, May 13, 10:00 PM CDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 7:00 PM CDT	Special Weather Statement	OUN	Custer, Dewey	60 min
May 13, 7:03 PM CDT	Special Weather Statement	OUN	Grant	42 min
May 13, 7:14 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills, Washita	46 min
May 13, 7:23 PM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble	24 min
May 13, 7:27 PM CDT	Special Weather Statement	OUN	Oklahoma	48 min
May 13, 7:44 PM CDT	Special Weather Statement	OUN	Noble	46 min
May 13, 7:50 PM CDT	Special Weather Statement	OUN	Canadian	40 min
May 13, 7:55 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	29 min
May 13, 7:56 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	34 min
May 13, 8:05 PM CDT	Special Weather Statement	OUN	Blaine	40 min
May 13, 8:09 PM CDT	Special Weather Statement	OUN	Blaine	51 min
May 13, 8:15 PM CDT	Special Weather Statement	OUN	Oklahoma	45 min
May 13, 8:21 PM CDT	Special Weather Statement	OUN	Harmon	24 min
May 13, 8:23 PM CDT	Special Weather Statement	OUN	Kingfisher, Logan, Payne	52 min
May 13, 8:27 PM CDT	Special Weather Statement	OUN	Custer	33 min
May 13, 8:53 PM CDT	Special Weather Statement	OUN	Caddo	37 min
May 13, 9:12 PM CDT	Special Weather Statement	OUN	Oklahoma	33 min
May 13, 9:33 PM CDT	Special Weather Statement	OUN	Caddo	27 min
May 13, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	30 min
May 13, 10:00 PM CDT	Special Weather Statement	OUN	Washita	45 min
May 13, 11:02 PM CDT	Special Weather Statement	OUN	Kiowa	28 min
May 13, 11:28 PM CDT	Special Weather Statement	OUN	Kiowa	32 min
May 14, 12:49 AM CDT	Special Weather Statement	OUN	Carter, Cotton, Jefferson, Stephens	41 min
May 14, 1:22 AM CDT	Special Weather Statement	OUN	Jefferson	38 min
May 14, 2:06 AM CDT	Special Weather Statement	OUN	Jefferson, Love	54 min
May 13, 7:33 PM CDT	Special Weather Statement	OUN	Hardeman	57 min
May 13, 8:09 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Knox	51 min
May 13, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	45 min
May 13, 9:44 PM CDT	Severe Thunderstorm Warning	OUN	Knox	20 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016 Every severe thunderstorm warning in 2016

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.