Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

June 21, 2021Woods County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 21, 2021, 3:52 AM CDT for Woods County, Oklahoma. It was in force for 38 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 21, 2021, 3:52 AM CDT (08:52 UTC)
Expired: Jun 21, 2021, 4:30 AM CDT
In force: 38 min
Issued by: NWS Norman, OK

County Woods County, OK

The radar

The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 08:55 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

Dodge City, (KDDC), launched 00:00Z, 8.9 hours before the alert went out and 142 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: 375 J/kg
Mixed-layer CIN: -333 J/kg
Mixed-layer LCL: 2510 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 20, 6:47 PM CDT, 9 hours 5 minutes earlier.

Area forecast discussion, Jun 20, 6:47 PM CDT, 9 hours 5 minutes before

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Hazardous weather outlook, Jun 20, 12:02 PM CDT, 15 hours 50 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 20, 7:27 PM CDT	Special Weather Statement	OUN	Harper	33 min
Jun 20, 7:44 PM CDT	Special Weather Statement	OUN	Woodward	31 min
Jun 20, 7:53 PM CDT	Special Weather Statement	OUN	Ellis	37 min
Jun 20, 8:11 PM CDT	Special Weather Statement	OUN	Woodward	34 min
Jun 20, 8:29 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woodward	31 min
Jun 20, 8:31 PM CDT	Special Weather Statement	OUN	Woods	29 min
Jun 21, 4:25 AM CDT	Special Weather Statement	OUN	Alfalfa	50 min
Jun 21, 5:17 AM CDT	Special Weather Statement	OUN	Harper, Woods	43 min
Jun 21, 5:32 AM CDT	Special Weather Statement	OUN	Garfield, Grant, Kay, Noble	43 min
Jun 21, 5:58 AM CDT	Special Weather Statement	OUN	Major, Woodward	47 min
Jun 21, 6:22 AM CDT	Special Weather Statement	OUN	Noble	23 min
Jun 21, 7:57 AM CDT	Special Weather Statement	OUN	Roger Mills	33 min
Jun 21, 9:23 AM CDT	Special Weather Statement	OUN	Grady	22 min
Jun 21, 9:40 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	50 min
Jun 21, 9:45 AM CDT	Special Weather Statement	OUN	Canadian	30 min
Jun 21, 10:15 AM CDT	Special Weather Statement	OUN	Murray	30 min
Jun 21, 10:15 AM CDT	Special Weather Statement	OUN	Jackson	30 min
Jun 21, 11:10 AM CDT	Special Weather Statement	OUN	Tillman	35 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every special weather statement in 2021

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.