Alert archive / Oklahoma / Special Weather Statements in 2018

Special Weather Statement, NWS Norman, OK

June 29, 2018Ellis County, Roger Mills County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 29, 2018, 11:30 PM CDT for Ellis County, Roger Mills County, Oklahoma. It was in force for 45 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: Jun 29, 2018, 11:30 PM CDT (04:30 UTC)
Expired: Jun 30, 2018, 12:15 AM CDT
In force: 45 min
Issued by: NWS Norman, OK

Counties Ellis County, OK, Roger Mills County, OK

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.5 hours before the alert went out and 197 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: 1016 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 2808 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 87 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 Jun 29, 10:52 PM CDT, 38 minutes earlier.

Area forecast discussion, Jun 29, 10:52 PM CDT, 38 minutes before

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Hazardous weather outlook, Jun 29, 9:06 PM CDT, 2 hours 24 minutes before

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In the hours before

Special weather statement, Jun 29, 10:52 PM CDT, 38 minutes before

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Special weather statement, Jun 29, 11:28 PM CDT, 2 minutes before

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Special weather statement, Jun 29, 11:30 PM CDT, 0 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
Jun 29, 10:52 PM CDT	Special Weather Statement	OUN	Beckham, Ellis, Roger Mills	38 min
Jun 29, 11:28 PM CDT	Special Weather Statement	OUN	Harmon	32 min
Jun 30, 12:01 AM CDT	Special Weather Statement	OUN	Beckham, Greer, Harmon, Jackson	44 min
Jun 30, 12:16 AM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	29 min
Jun 30, 1:29 PM CDT	Special Weather Statement	OUN	Tillman	31 min
Jun 30, 1:36 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	39 min
Jun 30, 1:54 PM CDT	Special Weather Statement	OUN	Caddo, Washita	36 min
Jun 30, 2:04 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Kiowa, Tillman	26 min
Jun 30, 2:30 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Stephens	30 min
Jun 30, 2:37 PM CDT	Special Weather Statement	OUN	Washita	53 min
Jun 30, 2:52 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Comanche, Grady, McClain, Stephens	53 min
Jun 30, 3:28 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	47 min
Jun 30, 3:40 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Cleveland, Garvin, Grady, McClain and 1 more	50 min
Jun 30, 3:51 PM CDT	Special Weather Statement	OUN	Major	24 min
Jun 30, 4:00 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	45 min
Jun 30, 4:07 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	27 min
Jun 30, 4:10 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Major, Woods	50 min
Jun 30, 4:27 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, Lincoln, Logan, McClain, Oklahoma and 2 more	48 min
Jun 30, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kingfisher, Noble	50 min
Jun 30, 4:52 PM CDT	Special Weather Statement	OUN	Stephens	23 min
Jun 30, 4:54 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	66 min
Jun 30, 5:14 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Cleveland, Garvin, McClain, Murray, Pottawatomie and 1 more	46 min
Jun 30, 5:17 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Noble, Payne	43 min
Jun 30, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Grant	50 min
Jun 30, 5:46 PM CDT	Special Weather Statement	OUN	Kay	29 min
Jun 30, 6:09 PM CDT	Severe Thunderstorm Warning	OUN	Kay	51 min
Jun 30, 6:30 PM CDT	Special Weather Statement	OUN	Seminole	30 min
Jun 30, 12:10 PM CDT	Special Weather Statement	OUN	Baylor	35 min
Jun 30, 12:46 PM CDT	Special Weather Statement	OUN	Baylor, Wilbarger	29 min

Nearby

Special Weather Statements in Oklahoma, 2018 Every 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.