Alert archive / Oklahoma / Special Weather Statements in 2018

Special Weather Statement, NWS Norman, OK

May 13, 2018Jackson County, Oklahoma

NWS Norman, OK issued this special weather statement at May 13, 2018, 11:21 PM CDT for Jackson County, Oklahoma. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 13, 2018, 11:21 PM CDT (04:21 UTC)
Expired
May 13, 2018, 11:45 PM CDT
In force
24 min
Issued by
NWS Norman, OK

County Jackson County, OK

The radar

The Altus AFB radar (KFDR), 57 km from the middle of the area, began a volume at 04:21 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.4 hours before the alert went out and 212 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, Amarillo Airport, TX at 00:00Z on 2018-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Amarillo Airport, TX at 00:00Z on 2018-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3885 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 13, 8:43 PM CDT, 2 hours 38 minutes earlier.

Area forecast discussion, May 13, 8:43 PM CDT, 2 hours 38 minutes before
Area Forecast Discussion
National Weather Service Norman OK
843 PM CDT Sun May 13 2018

.DISCUSSION...
Overall, shower and storm coverage has decreased over the past few
hours, but a few severe storms remain. The stronger/rotating
storms will likely continue through the late evening, therefore,
parts of western Oklahoma, and north Texas will have a risk of
severe weather. A few areas across the eastern panhandle of Texas
have received very heavy rainfall this evening, but do not expect
this to translate into western Oklahoma. Depending on trends, we
will also need to watch for heatburst late this evening/overnight.

&&

.PREV DISCUSSION... /issued 615 PM CDT Sun May 13 2018/

DISCUSSION...
Please see the 00Z aviation discussion below.

AVIATION...
A large area of thunderstorms will continue to move toward the
western OK terminals over the next 1-2 hours. Very strong wind
gusts will be the main threat, although some hail can't be ruled
out. Also, even after the thunderstorms dissipate the threat of
wind gusts over 50 kt may continue, especially near WWR and CSM.
We will watch this closely for amendments. Otherwise, expect VFR
cigs for most of the terminals overnight. Winds will remain S to
SSE around 15 to 20 kt.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  70  87  68  84 /  30  30  50  20
Hobart OK         71  92  66  86 /  30  10  70  30
Wichita Falls TX  72  90  68  89 /  30  20  60  20
Gage OK           67  95  62  78 /  60  40  50  30
Ponca City OK     72  89  66  83 /  20  20  60  20
Durant OK         70  85  68  85 /  20  20  50  30

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...None.
TX...None.
&&
Hazardous weather outlook, May 13, 11:03 PM CDT, 18 minutes before
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In the hours before

Special weather statement, May 13, 10:26 PM CDT, 55 minutes before
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Special weather statement, May 13, 10:28 PM CDT, 53 minutes before
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Local storm report, May 13, 11:00 PM CDT, 21 minutes before
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Special weather statement, May 13, 11:03 PM CDT, 18 minutes before
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Special weather statement, May 13, 11:09 PM CDT, 12 minutes before
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Special weather statement, May 13, 11:21 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 7:09 PM CDTSpecial Weather StatementOUNHarper21 min
May 13, 7:24 PM CDTSevere Thunderstorm WarningOUNHarper36 min
May 13, 8:02 PM CDTSpecial Weather StatementOUNHarper28 min
May 13, 8:04 PM CDTSpecial Weather StatementOUNRoger Mills41 min
May 13, 8:14 PM CDTSpecial Weather StatementOUNEllis61 min
May 13, 8:17 PM CDTSevere Thunderstorm WarningOUNRoger Mills58 min
May 13, 8:42 PM CDTSpecial Weather StatementOUNWoods48 min
May 13, 8:46 PM CDTSpecial Weather StatementOUNHarper59 min
May 13, 8:57 PM CDTSevere Thunderstorm WarningOUNWoods44 min
May 13, 9:04 PM CDTSpecial Weather StatementOUNEllis41 min
May 13, 9:09 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills51 min
May 13, 9:13 PM CDTSpecial Weather StatementOUNRoger Mills47 min
May 13, 9:21 PM CDTSpecial Weather StatementOUNHarmon54 min
May 13, 9:31 PM CDTSpecial Weather StatementOUNDewey29 min
May 13, 9:49 PM CDTSpecial Weather StatementOUNWoods56 min
May 13, 10:26 PM CDTSpecial Weather StatementOUNGreer34 min
May 13, 10:28 PM CDTSpecial Weather StatementOUNHarmon47 min
May 13, 10:38 PM CDTSevere Thunderstorm WarningOUNBeckham37 min
May 13, 10:55 PM CDTSevere Thunderstorm WarningOUNHarmon, Jackson50 min
May 13, 11:03 PM CDTSpecial Weather StatementOUNKiowa57 min
May 13, 11:09 PM CDTSpecial Weather StatementOUNWashita21 min
May 13, 11:28 PM CDTSpecial Weather StatementOUNBeckham47 min
May 13, 11:35 PM CDTSpecial Weather StatementOUNWashita55 min
May 13, 11:47 PM CDTSpecial Weather StatementOUNJackson, Kiowa28 min
May 14, 12:05 AM CDTHigh Wind WarningOUNBlaine, Caddo, Custer, Washita115 min
May 14, 12:06 AM CDTSevere Thunderstorm WarningOUNJackson, Kiowa, Tillman39 min
May 14, 12:33 AM CDTSpecial Weather StatementOUNGreer27 min
May 14, 12:45 AM CDTSpecial Weather StatementOUNKiowa30 min
May 14, 12:59 AM CDTSpecial Weather StatementOUNGreer31 min
May 14, 1:12 AM CDTSpecial Weather StatementOUNComanche33 min
May 14, 1:32 AM CDTSpecial Weather StatementOUNKiowa28 min
May 14, 5:17 PM CDTSpecial Weather StatementOUNRoger Mills28 min
May 14, 5:29 PM CDTSpecial Weather StatementOUNBeckham31 min
May 14, 5:30 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon45 min
May 14, 5:42 PM CDTSpecial Weather StatementOUNHarmon33 min
May 14, 5:57 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon48 min
May 14, 5:58 PM CDTSpecial Weather StatementOUNBeckham32 min
May 14, 6:00 PM CDTSpecial Weather StatementOUNEllis30 min
May 14, 6:05 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills55 min
May 14, 6:09 PM CDTSevere Thunderstorm WarningOUNDewey, Ellis, Woodward51 min
May 14, 6:14 PM CDTSevere Thunderstorm WarningOUNBeckham46 min
May 14, 6:42 PM CDTSevere Thunderstorm WarningOUNMajor, Woodward48 min
May 14, 6:46 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon, Jackson44 min
May 14, 6:49 PM CDTSpecial Weather StatementOUNCuster26 min
May 14, 6:56 PM CDTSevere Thunderstorm WarningOUNKay64 min
May 13, 10:33 PM CDTSevere Thunderstorm WarningOUNHardeman42 min

Nearby

Special Weather Statements in Oklahoma, 2018Every special weather statement 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.