Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 397, NWS Norman, OK

May 29, 20134 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 29, 2013, 2:47 AM CDT for 4 counties in Oklahoma. It was in force for 43 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 29, 2013, 2:47 AM CDT (07:47 UTC)
Expired: May 29, 2013, 3:30 AM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Ellis County, OK, Harper County, OK, Roger Mills County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 141 km from the middle of the area, began a volume at 07:47 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 29, 2:39 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 7.8 hours before the alert went out and 168 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: 3879 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 73 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 29, 12:32 AM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, May 29, 12:32 AM CDT, 2 hours 15 minutes before

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Hazardous weather outlook, May 28, 9:26 PM CDT, 5 hours 21 minutes before

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In the hours before

Special weather statement, May 29, 2:36 AM CDT, 11 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 29, 2:36 AM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	24 min
May 29, 3:29 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills, Woodward	46 min
May 29, 4:35 AM CDT	Special Weather Statement	OUN	Ellis	25 min
May 29, 2:59 PM CDT	Special Weather Statement	OUN	Greer, Jackson	31 min
May 29, 3:27 PM CDT	Special Weather Statement	OUN	Jackson, Kiowa, Tillman, Washita	33 min
May 29, 3:40 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	50 min
May 29, 3:53 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Greer, Jackson, Kiowa and 1 more	37 min
May 29, 4:05 PM CDT	Special Weather Statement	OUN	Tillman	25 min
May 29, 4:30 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Dewey, Grady and 3 more	45 min
May 29, 4:32 PM CDT	Special Weather Statement	OUN	Comanche, Cotton	28 min
May 29, 4:48 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Grady, Jefferson, Stephens and 1 more	42 min
May 29, 4:48 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	57 min
May 29, 5:01 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon, Roger Mills	59 min
May 29, 5:08 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Grady, Kingfisher	67 min
May 29, 5:30 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens	45 min
May 29, 5:38 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Lincoln, Logan, Noble, Oklahoma and 1 more	52 min
May 29, 5:38 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Ellis, Harper, Major, Roger Mills and 1 more	52 min
May 29, 5:52 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Greer, Harmon, Kiowa and 2 more	38 min
May 29, 6:13 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Garfield, Garvin, Grady, Grant and 10 more	62 min
May 29, 6:22 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Custer, Dewey, Harper, Kingfisher and 3 more	38 min
May 29, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Blaine, Custer, Greer, Harmon, Kiowa and 1 more	49 min
May 29, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Garfield, Grant, Kingfisher, Logan and 3 more	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013 Every severe thunderstorm warning in 2013

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.