Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

October 13, 2021Bryan County, Oklahoma

NWS Norman, OK issued this special weather statement at Oct 13, 2021, 2:54 PM CDT for Bryan County, Oklahoma. It was in force for 66 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: Oct 13, 2021, 2:54 PM CDT (19:54 UTC)
Expired: Oct 13, 2021, 4:00 PM CDT
In force: 66 min
Issued by: NWS Norman, OK
Hail: 0.25 in
Wind: 55

County Bryan County, OK

The radar

The Norman radar (KTLX), 186 km from the middle of the area, began a volume at 19:54 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.9 hours before the alert went out and 164 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: 756 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 377 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.2

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 Oct 13, 1:10 PM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Oct 13, 1:10 PM CDT, 1 hour 44 minutes before

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Hazardous weather outlook, Oct 13, 11:49 AM CDT, 3 hours 5 minutes before

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In the hours before

Special weather statement, Oct 13, 2:54 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
Oct 12, 7:12 PM CDT	Tornado Warning	OUN	Washita	14 min
Oct 12, 7:19 PM CDT	Special Weather Statement	OUN	Tillman	26 min
Oct 12, 7:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Custer, Washita	51 min
Oct 12, 7:40 PM CDT	Tornado Warning	OUN	Comanche, Kiowa, Tillman	50 min
Oct 12, 8:02 PM CDT	Tornado Warning Tornado observed	OUN	Blaine, Custer, Dewey	43 min
Oct 12, 8:12 PM CDT	Tornado Warning	OUN	Comanche, Kiowa, Tillman	48 min
Oct 12, 8:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Blaine, Custer, Dewey	49 min
Oct 12, 8:46 PM CDT	Tornado Warning	OUN	Blaine, Custer, Dewey	44 min
Oct 12, 8:53 PM CDT	Tornado Warning	OUN	Caddo, Comanche, Kiowa, Washita	52 min
Oct 12, 9:43 PM CDT	Tornado Warning	OUN	Caddo	32 min
Oct 12, 10:49 PM CDT	Special Weather Statement	OUN	Canadian	41 min
Oct 12, 10:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis, Harper, Woods, Woodward	77 min
Oct 13, 12:14 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis, Harper, Woods, Woodward	61 min
Oct 13, 12:38 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Ellis, Roger Mills, Woodward	67 min
Oct 13, 1:14 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Major, Woods, Woodward	61 min
Oct 13, 1:44 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Roger Mills	46 min
Oct 13, 2:02 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Alfalfa, Woods	29 min
Oct 13, 2:06 AM CDT	Special Weather Statement	OUN	Beckham	24 min
Oct 13, 2:23 AM CDT	Special Weather Statement	OUN	Dewey, Major	37 min
Oct 13, 2:29 AM CDT	Special Weather Statement	OUN	Beckham	31 min
Oct 13, 2:58 AM CDT	Special Weather Statement	OUN	Alfalfa, Blaine, Dewey, Grant, Major	47 min
Oct 13, 3:00 AM CDT	Special Weather Statement	OUN	Custer, Greer, Harmon, Jackson, Washita	45 min
Oct 13, 3:35 AM CDT	Special Weather Statement	OUN	Garfield, Grant, Kingfisher	25 min
Oct 13, 3:41 AM CDT	Special Weather Statement	OUN	Caddo, Kiowa, Tillman	34 min
Oct 13, 3:56 AM CDT	Special Weather Statement	OUN	Garfield, Kay, Kingfisher, Noble	49 min
Oct 13, 4:11 AM CDT	Special Weather Statement	OUN	Caddo, Canadian	49 min
Oct 13, 4:25 AM CDT	Severe Thunderstorm Warning	OUN	Kay	39 min
Oct 13, 4:41 AM CDT	Special Weather Statement	OUN	Tillman	49 min
Oct 13, 4:45 AM CDT	Special Weather Statement	OUN	Logan, Noble, Payne	45 min
Oct 13, 4:59 AM CDT	Special Weather Statement	OUN	Cleveland, Comanche, Grady, Oklahoma	46 min
Oct 13, 5:07 AM CDT	Tornado Warning	OUN	Canadian, Oklahoma	23 min
Oct 13, 5:27 AM CDT	Tornado Warning	OUN	Oklahoma	18 min
Oct 13, 5:31 AM CDT	Special Weather Statement	OUN	Lincoln, Payne	29 min
Oct 13, 5:41 AM CDT	Special Weather Statement	OUN	Cleveland, Grady, McClain, Oklahoma, Stephens	49 min
Oct 13, 5:44 AM CDT	Tornado Warning	OUN	Lincoln, Logan, Oklahoma	18 min
Oct 13, 5:59 AM CDT	Special Weather Statement	OUN	Lincoln	46 min
Oct 13, 6:06 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, Grady, McClain	24 min
Oct 13, 6:27 AM CDT	Special Weather Statement	OUN	Garvin, Lincoln, Pottawatomie	33 min
Oct 13, 6:44 AM CDT	Areal Flood Advisory	OUN	Cleveland, Oklahoma	2 hr
Oct 13, 6:55 AM CDT	Special Weather Statement	OUN	Pontotoc, Seminole	50 min
Oct 13, 6:57 AM CDT	Special Weather Statement	OUN	Carter, Garvin, Love, Murray	48 min
Oct 13, 7:19 AM CDT	Tornado Warning	OUN	Pontotoc, Pottawatomie, Seminole	26 min
Oct 13, 7:29 AM CDT	Areal Flood Advisory	OUN	Pottawatomie	3 hr
Oct 13, 7:44 AM CDT	Special Weather Statement	OUN	Coal, Hughes, Pontotoc, Seminole	46 min
Oct 13, 8:07 AM CDT	Tornado Warning	OUN	Hughes	23 min
Oct 13, 3:17 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan	3 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.