Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

August 22, 2021Noble County, Oklahoma

NWS Norman, OK issued this special weather statement at Aug 22, 2021, 4:29 PM CDT for Noble County, Oklahoma. It was in force for 31 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: Aug 22, 2021, 4:29 PM CDT (21:29 UTC)
Expired: Aug 22, 2021, 5:00 PM CDT
In force: 31 min
Issued by: NWS Norman, OK
Hail: 0.25 in
Wind: 40

County Noble County, OK

The radar

The Vance AFB radar (KVNX), 107 km from the middle of the area, began a volume at 21:31 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

Springfield, MO (KSGF), launched 12:00Z, 9.5 hours before the alert went out and 294 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: 133 J/kg
Mixed-layer CIN: -250 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 67 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 Aug 22, 3:57 PM CDT, 32 minutes earlier.

Area forecast discussion, Aug 22, 3:57 PM CDT, 32 minutes before

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Hazardous weather outlook, Aug 22, 2:05 PM CDT, 2 hours 24 minutes before

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In the hours before

Special weather statement, Aug 22, 4:29 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
Aug 21, 7:16 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	29 min
Aug 21, 7:19 PM CDT	Special Weather Statement	OUN	Lincoln	26 min
Aug 21, 7:25 PM CDT	Areal Flood Advisory	OUN	Blaine, Dewey	3 hr
Aug 21, 7:40 PM CDT	Areal Flood Advisory	OUN	Blaine, Kingfisher	3 hr
Aug 21, 8:14 PM CDT	Areal Flood Advisory	OUN	Kingfisher, Logan, Payne	4 hr
Aug 21, 8:39 PM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Roger Mills	3 hr
Aug 22, 2:59 PM CDT	Heat Advisory	OUN	Atoka, Bryan, Carter, Coal, Garvin, Hughes and 10 more	29 hr

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.