Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

May 10, 2021Morris County, Titus County, Texas

NWS Shreveport, LA issued this special weather statement at May 10, 2021, 6:29 PM CDT for Morris County, Titus County, Texas. It was in force for 46 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: May 10, 2021, 6:29 PM CDT (23:29 UTC)
Expired: May 10, 2021, 7:15 PM CDT
In force: 46 min
Issued by: NWS Shreveport, LA

Counties Morris County, TX, Titus County, TX

The radar

The Shreveport radar (KSHV), 129 km from the middle of the area, began a volume at 23:30 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 12:00Z, 11.5 hours before the alert went out and 133 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: 257 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 552 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.4

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 May 10, 5:26 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, May 10, 5:26 PM CDT, 1 hour 3 minutes before

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Hazardous weather outlook, May 10, 1:55 PM CDT, 4 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
155 PM CDT Mon May 10 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-111900-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
155 PM CDT Mon May 10 2021

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

There is a risk for isolated storms today across portions of the
region today. While widespread severe weather is not expected at
this time, some of the stronger storms may produce large hail,
especially north of the Interstate 20 corridor.  Brief heavy rain
may also result in minor flooding in areas that received heavy
rainfall on yesterday.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

Periods of moderate to heavy rainfall will be possible, especially
Tuesday and Tuesday night, which may lead to localized flooding.
Isolated strong storms also can not be ruled out, with hail and
locally gusty winds possible.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters will be needed this afternoon and
evening.

20

In the hours before

Special weather statement, May 10, 5:30 PM CDT, 59 minutes before

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Local storm report, May 10, 5:32 PM CDT, 57 minutes before

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Local storm report, May 10, 5:34 PM CDT, 55 minutes before

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Local storm report, May 10, 5:49 PM CDT, 40 minutes before

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Special weather statement, May 10, 6:28 PM CDT, 1 minute before

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Special weather statement, May 10, 6:29 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Shreveport LA
629 PM CDT Mon May 10 2021

TXZ096-097-109-111-112-110015-
Cass TX-Bowie TX-Red River TX-Morris TX-Titus TX-
629 PM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CASS...SOUTHWESTERN
BOWIE...MORRIS...NORTHERN TITUS AND SOUTHEASTERN RED RIVER COUNTIES
UNTIL 715 PM CDT...

At 629 PM CDT, Doppler radar was tracking a strong thunderstorm near
Wilkerson, or 9 miles north of Mount Pleasant, moving east at 35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Daingerfield, Hughes Springs, Naples, Omaha, Rocky Branch, Dalby
Springs, Us 259 And I 30 Intersection, Wilkerson, Cookville,
Marietta, Spring Hill and Harts Bluff.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3327 9508 3342 9502 3337 9440 3294 9460
TIME...MOT...LOC 2329Z 287DEG 32KT 3330 9496

33

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 8:20 PM CDT	Special Weather Statement	SHV	Angelina	40 min
May 9, 8:23 PM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston, Trinity	35 days
May 9, 8:26 PM CDT	River Flood Warning	SHV	Sabine, San Augustine	3 days
May 9, 11:10 PM CDT	Special Weather Statement	SHV	Nacogdoches	50 min
May 10, 12:04 AM CDT	Special Weather Statement	SHV	Angelina	41 min
May 10, 12:15 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Titus, Upshur, Wood	45 min
May 10, 12:41 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Morris, Red River, Titus	49 min
May 10, 1:00 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Marion, Morris, Titus, Upshur	45 min
May 10, 1:08 PM CDT	Special Weather Statement	SHV	Franklin	37 min
May 10, 1:29 PM CDT	Special Weather Statement	SHV	Titus	46 min
May 10, 1:44 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Marion, Morris, Titus	46 min
May 10, 2:25 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Harrison, Marion	65 min
May 10, 3:06 PM CDT	Special Weather Statement	SHV	Red River	39 min
May 10, 5:20 PM CDT	Special Weather Statement	SHV	Harrison	40 min
May 9, 7:02 PM CDT	Special Weather Statement	SHV	Grant, Natchitoches	58 min
May 9, 7:17 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Webster	58 min
May 9, 7:22 PM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Sabine	53 min
May 9, 8:05 PM CDT	Special Weather Statement	SHV	Grant	55 min
May 9, 8:14 PM CDT	Special Weather Statement	SHV	Claiborne, Union	61 min
May 9, 8:15 PM CDT	Special Weather Statement	SHV	Webster	60 min
May 10, 2:53 PM CDT	Special Weather Statement	SHV	Caddo	52 min
May 10, 3:30 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	45 min
May 10, 3:45 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, De Soto, Webster	45 min
May 10, 3:54 PM CDT	Special Weather Statement	SHV	Webster	66 min
May 10, 3:58 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Claiborne, Webster	25 min
May 10, 4:16 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, Natchitoches, Red River, Webster and 1 more	44 min
May 10, 4:56 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Natchitoches, Winn	53 min
May 10, 5:30 PM CDT	Special Weather Statement	SHV	Grant, LaSalle	60 min
May 10, 6:28 PM CDT	Special Weather Statement	SHV	LaSalle	47 min
May 10, 6:36 PM CDT	Special Weather Statement	SHV	De Soto, Red River	39 min

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.