Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

April 28, 2021Red River County, Texas

NWS Shreveport, LA issued this special weather statement at Apr 28, 2021, 9:41 PM CDT for Red River County, Texas. It was in force for 49 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: Apr 28, 2021, 9:41 PM CDT (02:41 UTC)
Expired: Apr 28, 2021, 10:30 PM CDT
In force: 49 min
Issued by: NWS Shreveport, LA

County Red River County, TX

The radar

The Western Arkansas radar (KSRX), 176 km from the middle of the area, began a volume at 02:42 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, 2.7 hours before the alert went out and 206 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: 976 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1188 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 258 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

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 Apr 28, 8:11 PM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, Apr 28, 8:11 PM CDT, 1 hour 30 minutes before

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Hazardous weather outlook, Apr 28, 12:59 PM CDT, 8 hours 42 minutes before

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In the hours before

Special weather statement, Apr 28, 9:41 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
Apr 29, 4:36 AM CDT	Areal Flood Advisory	SHV	Bowie, Red River	4 hr
Apr 29, 5:32 AM CDT	Special Weather Statement	SHV	Bowie	43 min
Apr 29, 8:19 AM CDT	River Flood Warning	SHV	Gregg	24 hr
Apr 29, 8:27 AM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston	21 days
Apr 29, 8:55 AM CDT	River Flood Warning	SHV	Wood	24 hr
Apr 29, 10:10 AM CDT	River Flood Warning	SHV	Franklin, Morris, Titus	4 days
Apr 29, 4:15 PM CDT	Special Weather Statement	SHV	Harrison	45 min
Apr 29, 1:04 AM CDT	Special Weather Statement	SHV	Sevier	41 min
Apr 29, 12:16 AM CDT	Special Weather Statement	SHV	McCurtain	44 min
Apr 29, 9:39 AM CDT	River Flood Warning	SHV	McCurtain	11 hr

Nearby

Special Weather Statements in Texas, 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.