Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

August 13, 2021McCurtain County, Oklahoma

NWS Shreveport, LA issued this special weather statement at Aug 13, 2021, 10:49 PM CDT for McCurtain 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: Aug 13, 2021, 10:49 PM CDT (03:49 UTC)
Expired: Aug 13, 2021, 11:30 PM CDT
In force: 41 min
Issued by: NWS Shreveport, LA
Hail: 0.25 in
Wind: 40

County McCurtain County, OK

The radar

The Western Arkansas radar (KSRX), 164 km from the middle of the area, began a volume at 03:51 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

Shreveport, LA (KSHV), launched 00:00Z, 3.8 hours before the alert went out and 188 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: 2410 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1478 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -6 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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Aug 13, 10:10 PM CDT, 39 minutes earlier.

Area forecast discussion, Aug 13, 10:10 PM CDT, 39 minutes before

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Hazardous weather outlook, Aug 13, 5:52 AM CDT, 16 hours 57 minutes before

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In the hours before

Special weather statement, Aug 13, 5:41 PM CDT, 5 hours 8 minutes before

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Special weather statement, Aug 13, 6:15 PM CDT, 4 hours 34 minutes before

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Special weather statement, Aug 13, 6:53 PM CDT, 3 hours 56 minutes before

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Special weather statement, Aug 13, 10:49 PM CDT, 0 minutes before

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The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 14, 12:31 AM CDT	Areal Flood Advisory	SHV	Red River	3 hr
Aug 14, 6:52 AM CDT	Areal Flood Advisory	SHV	Red River	3 hr
Aug 14, 3:21 PM CDT	Special Weather Statement	SHV	Shelby	39 min
Aug 14, 3:28 PM CDT	Special Weather Statement	SHV	Smith	47 min
Aug 14, 3:56 PM CDT	Special Weather Statement	SHV	Smith	49 min
Aug 14, 4:26 PM CDT	Areal Flood Advisory	SHV	Smith	2 hr
Aug 14, 4:38 PM CDT	Special Weather Statement	SHV	Panola	37 min
Aug 14, 4:43 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Shelby	47 min
Aug 14, 5:22 PM CDT	Special Weather Statement	SHV	Panola	38 min
Aug 14, 6:00 PM CDT	Special Weather Statement	SHV	Panola	30 min
Aug 14, 2:40 PM CDT	Areal Flood Advisory	SHV	Ouachita, Union	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.