Alert archive / Oklahoma / Special Weather Statements in 2020

Special Weather Statement, NWS Norman, OK

March 30, 2020Stephens County, Oklahoma

NWS Norman, OK issued this special weather statement at Mar 30, 2020, 1:49 PM CDT for Stephens 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 outline as issued.

The facts

Issued: Mar 30, 2020, 1:49 PM CDT (18:49 UTC)
Expired: Mar 30, 2020, 2:30 PM CDT
In force: 41 min
Issued by: NWS Norman, OK

County Stephens County, OK

The radar

The Altus AFB radar (KFDR), 102 km from the middle of the area, began a volume at 18:49 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 12:00Z, 6.8 hours before the alert went out and 366 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: 1991 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 366 m²/s²
0-3 km storm-relative helicity: 278 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 12:46 PM CDT	Special Weather Statement	OUN	Stephens	44 min
Mar 30, 12:54 PM CDT	Special Weather Statement	OUN	Cotton	51 min
Mar 30, 2:23 PM CDT	Special Weather Statement	OUN	Custer	37 min
Mar 30, 2:38 PM CDT	Special Weather Statement	OUN	Jefferson	37 min
Mar 30, 2:58 PM CDT	Special Weather Statement	OUN	Custer	32 min
Mar 30, 3:20 PM CDT	Special Weather Statement	OUN	Love	40 min
Mar 30, 3:34 PM CDT	Special Weather Statement	OUN	Custer	26 min
Mar 30, 1:52 PM CDT	Special Weather Statement	OUN	Archer, Clay	23 min
Mar 30, 2:03 PM CDT	Special Weather Statement	OUN	Clay	42 min

Nearby

Special Weather Statements in Oklahoma, 2020 Every special weather statement in 2020

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.