Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

May 10, 2021Howard County, Arkansas

NWS Shreveport, LA issued this special weather statement at May 10, 2021, 10:11 PM CDT for Howard County, Arkansas. It was in force for 34 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, 10:11 PM CDT (03:11 UTC)
Expired: May 10, 2021, 10:45 PM CDT
In force: 34 min
Issued by: NWS Shreveport, LA

County Howard County, AR

The radar

The Western Arkansas radar (KSRX), 132 km from the middle of the area, began a volume at 03:10 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, 3.2 hours before the alert went out and 187 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 474 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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, 10:11 PM CDT, 0 minutes earlier.

Area forecast discussion, May 10, 10:11 PM CDT, 0 minutes before

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Hazardous weather outlook, May 10, 1:55 PM CDT, 8 hours 16 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, 8:13 PM CDT, 1 hour 58 minutes before

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

LAZ018>020-022-110200-
Winn LA-La Salle LA-Natchitoches LA-Grant LA-
813 PM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR GRANT...EAST CENTRAL
NATCHITOCHES...CENTRAL LA SALLE AND SOUTHERN WINN PARISHES UNTIL 900
PM CDT...

At 813 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 14 miles southeast of Winnfield to near
Natchitoches. Movement was southeast at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Natchitoches, Ball, Colfax, Montgomery, Midway, Natchez, Pollock, Dry
Prong, Georgetown, Atlanta, Nebo, Rogers, Catahoula Lake, St.
Maurice, Bentley, Rochelle, Zenoria, Lake Iatt, Bermuda and Aloha.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms 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 3138 9212 3142 9216 3147 9216 3148 9218
      3139 9263 3139 9266 3141 9267 3140 9269
      3141 9270 3142 9268 3143 9269 3145 9268
      3145 9271 3147 9269 3152 9272 3146 9279
      3179 9319 3184 9244 3158 9201 3138 9201
TIME...MOT...LOC 0113Z 308DEG 31KT 3177 9247 3172 9306

12

Special weather statement, May 10, 8:41 PM CDT, 1 hour 30 minutes before

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

TXZ108>111-124-125-137-110245-
Upshur TX-Gregg TX-Camp TX-Wood TX-Franklin TX-Morris TX-Titus TX-
841 PM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN FRANKLIN...WOOD...
UPSHUR...SOUTHWESTERN MORRIS...SOUTHERN TITUS...CAMP AND CENTRAL
GREGG COUNTIES UNTIL 945 PM CDT...

At 841 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pleasant Grove, or 11 miles west of Winnsboro, moving east at 40 mph.

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

Locations impacted include...
Longview, White Oak, Gladewater, Gilmer, Pittsburg, Winnsboro,
Leesburg, Daingerfield, Quitman, Clarksville City, East Mountain,
Cason, Scroggins, Pleasant Grove, Hainesville, Rosewood, Newsome,
West Mountain, Forest Hill and Yantis.

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 3296 9531 3307 9531 3314 9472 3248 9477
      3282 9565 3296 9567
TIME...MOT...LOC 0141Z 276DEG 36KT 3292 9548

33

Special weather statement, May 10, 8:59 PM CDT, 1 hour 12 minutes before

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Special weather statement, May 10, 9:27 PM CDT, 44 minutes before

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

TXZ126-138-110315-
Harrison TX-Marion TX-
927 PM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MARION AND CENTRAL
HARRISON COUNTIES UNTIL 1015 PM CDT...

At 927 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southeast of Harleton, or 8 miles west of Marshall, moving
northeast at 25 mph.

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

Locations impacted include...
Marshall, Jefferson, Karnack, Berea, Woodlawn, Nesbitt and Pruett.

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 3288 9437 3288 9432 3263 9409 3246 9449
      3260 9462
TIME...MOT...LOC 0227Z 230DEG 22KT 3258 9449

33

Local storm report, May 10, 9:46 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
946 PM CDT MON MAY 10 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0852 PM     HAIL             2 SSE RINGOLD           34.19N 95.12W
05/10/2021  E1.00 INCH       MCCURTAIN          OK   EMERGENCY MNGR

&&

Special weather statement, May 10, 10:11 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Shreveport LA
1011 PM CDT Mon May 10 2021

ARZ050-051-110345-
Howard AR-Sevier AR-
1011 PM CDT Mon May 10 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN SEVIER AND
NORTHEASTERN HOWARD COUNTIES UNTIL 1045 PM CDT...

At 1011 PM CDT, Doppler radar was tracking a strong thunderstorm over
Dierks, moving east at 50 mph.

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

Locations impacted include...
Dierks, Corinth, Muddy Fork, Lebanon and Provo.

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 3419 9392 3418 9382 3405 9382 3402 9417
      3417 9420 3425 9393
TIME...MOT...LOC 0311Z 261DEG 44KT 3414 9405

33

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:47 PM CDT	River Flood Warning	SHV	Gregg	64 hr
May 10, 8:41 PM CDT	Special Weather Statement	SHV	Camp, Morris, Upshur, Wood	64 min
May 10, 9:27 PM CDT	Special Weather Statement	SHV	Harrison, Marion	48 min
May 10, 9:29 PM CDT	Severe Thunderstorm Warning	SHV	Red River	46 min
May 11, 12:57 AM CDT	Special Weather Statement	SHV	Smith	48 min
May 11, 1:12 AM CDT	Special Weather Statement	SHV	Wood	48 min
May 11, 2:04 AM CDT	Flash Flood Watch	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	24 hr
May 11, 2:38 AM CDT	Special Weather Statement	SHV	Gregg	52 min
May 11, 3:20 AM CDT	Special Weather Statement	SHV	Harrison	40 min
May 11, 3:28 AM CDT	Areal Flood Advisory	SHV	Harrison	4 hr
May 11, 8:04 AM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston	36 days
May 11, 9:22 AM CDT	River Flood Warning	SHV	Gregg, Smith, Upshur, Wood	39 days
May 11, 9:25 AM CDT	River Flood Warning	SHV	Franklin, Morris, Red River, Titus	3 days
May 11, 9:25 AM CDT	River Flood Warning	SHV	Franklin, Morris, Titus	5 days
May 11, 11:15 AM CDT	Special Weather Statement	SHV	Cherokee	45 min
May 11, 11:59 AM CDT	Special Weather Statement	SHV	Cherokee	31 min
May 11, 12:31 PM CDT	Special Weather Statement	SHV	Cherokee	44 min
May 11, 1:32 PM CDT	Special Weather Statement	SHV	Smith	43 min
May 11, 1:34 PM CDT	Special Weather Statement	SHV	Gregg	41 min
May 11, 2:12 PM CDT	Special Weather Statement	SHV	Cass, Marion	48 min
May 11, 2:15 PM CDT	Special Weather Statement	SHV	Harrison	45 min
May 11, 2:21 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Rusk, Smith, Upshur	37 min
May 11, 2:50 PM CDT	Special Weather Statement	SHV	Cherokee, Smith	40 min
May 11, 2:56 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Panola, Rusk	17 min
May 11, 3:01 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Gregg, Rusk, Smith	48 min
May 11, 3:59 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 1 more	61 min
May 11, 4:18 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Cherokee	42 min
May 11, 5:01 PM CDT	Special Weather Statement	SHV	Angelina	59 min
May 11, 6:00 PM CDT	Special Weather Statement	SHV	Angelina	45 min
May 11, 6:14 PM CDT	Severe Thunderstorm Warning	SHV	Angelina	28 min
May 10, 8:13 PM CDT	Special Weather Statement	SHV	Grant, Natchitoches	47 min
May 10, 11:24 PM CDT	Areal Flood Advisory	SHV	Bossier, Caddo	3 hr
May 11, 1:55 AM CDT	Special Weather Statement	SHV	LaSalle	50 min
May 11, 4:38 AM CDT	Special Weather Statement	SHV	LaSalle	37 min
May 11, 7:29 AM CDT	Special Weather Statement	SHV	LaSalle	46 min
May 11, 7:39 AM CDT	Special Weather Statement	SHV	De Soto, Sabine	51 min
May 11, 9:25 AM CDT	Special Weather Statement	SHV	Claiborne	35 min
May 11, 3:26 PM CDT	Special Weather Statement	SHV	Caddo	64 min
May 10, 9:56 PM CDT	Severe Thunderstorm Warning	SHV	Sevier	49 min
May 11, 3:37 AM CDT	Special Weather Statement	SHV	Little River	53 min
May 11, 12:04 PM CDT	Special Weather Statement	SHV	Howard	26 min
May 10, 8:59 PM CDT	Special Weather Statement	SHV	McCurtain	46 min
May 10, 9:12 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	38 min
May 11, 1:28 PM CDT	Special Weather Statement	SHV	McCurtain	47 min

Nearby

Special Weather Statements in Arkansas, 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.