Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

March 31, 2021Union County, Arkansas

NWS Shreveport, LA issued this special weather statement at Mar 31, 2021, 4:27 AM CDT for Union County, Arkansas. It was in force for 48 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: Mar 31, 2021, 4:27 AM CDT (09:27 UTC)
Expired: Mar 31, 2021, 5:15 AM CDT
In force: 48 min
Issued by: NWS Shreveport, LA

County Union County, AR

The radar

The Shreveport radar (KSHV), 158 km from the middle of the area, began a volume at 09:30 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 00:00Z, 9.5 hours before the alert went out and 149 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: 1017 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 7.1

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 Mar 31, 3:50 AM CDT, 37 minutes earlier.

Area forecast discussion, Mar 31, 3:50 AM CDT, 37 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Mar 30, 12:10 PM CDT, 16 hours 17 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Shreveport LA
1210 PM CDT Tue Mar 30 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>167-311715-
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-
1210 PM CDT Tue Mar 30 2021

This Hazardous Weather Outlook is for southern Arkansas, for
northern Louisiana, for eastern Texas and for southeast Oklahoma.

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

A marginal risk for severe weather remains in place for much of the
Four State Area tonight and early in the morning as our next cold
front arrives. While widespread severe weather is currently not
anticipated, any strong storms may produce some hail and isolated
damaging winds. No other hazardous weather is expected.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

No hazardous weather is expected for the next week.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel, amateur radio
operators and storm spotters will not be needed at this time.
Please relay any information about observed severe weather to the
NWS while following all local, state, and CDC guidelines.

24

In the hours before

Local storm report, Mar 30, 10:33 PM CDT, 5 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1033 PM CDT TUE MAR 30 2021

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

0854 PM     TSTM WND DMG     8 ESE FARMERVILLE       32.75N 92.27W
03/30/2021                   UNION              LA   LAW ENFORCEMENT

            TREES DOWN ACROSS ROADS IN THE ANTIOCH
            COMMUNITY.

&&

09

Special weather statement, Mar 31, 1:16 AM CDT, 3 hours 11 minutes before

Special Weather Statement
National Weather Service Shreveport LA
116 AM CDT Wed Mar 31 2021

ARZ061-310645-
Nevada AR-
116 AM CDT Wed Mar 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL NEVADA COUNTY UNTIL 145
AM CDT...

At 116 AM CDT, Doppler radar was tracking a strong thunderstorm over
Prescott, moving east at 35 mph.

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

Locations impacted include...
Prescott, Emmet, Bluff City, White Oak Lake State Park, Boughton and
Reader.

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 3384 9329 3384 9326 3383 9326 3383 9323
      3380 9318 3382 9314 3379 9313 3378 9310
      3368 9311 3369 9348 3382 9347 3383 9346
      3388 9346 3390 9331
TIME...MOT...LOC 0616Z 264DEG 29KT 3379 9340

12

Special weather statement, Mar 31, 1:18 AM CDT, 3 hours 9 minutes before

Special Weather Statement
National Weather Service Shreveport LA
118 AM CDT Wed Mar 31 2021

TXZ096-097-109-111-112-310700-
Cass TX-Bowie TX-Red River TX-Morris TX-Titus TX-
118 AM CDT Wed Mar 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CASS...SOUTHWESTERN
BOWIE...NORTHERN MORRIS...NORTHERN TITUS AND SOUTHEASTERN RED RIVER
COUNTIES UNTIL 200 AM CDT...

At 118 AM CDT, Doppler radar was tracking a strong thunderstorm near
Wilkerson, or 11 miles north of Mount Pleasant, moving east at 35
mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
New Boston, Dalby Springs, Us 259 And I 30 Intersection, Wilkerson,
Talco, Spring Hill, Harts Bluff, Lydia and Bryans Mill.

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 3322 9510 3341 9512 3349 9443 3322 9441
TIME...MOT...LOC 0618Z 265DEG 33KT 3333 9502

12

Special weather statement, Mar 31, 3:30 AM CDT, 57 minutes before

Special Weather Statement
National Weather Service Shreveport LA
330 AM CDT Wed Mar 31 2021

ARZ060-061-071>073-310915-
Hempstead AR-Lafayette AR-Union AR-Nevada AR-Columbia AR-
330 AM CDT Wed Mar 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HEMPSTEAD...EASTERN
LAFAYETTE...SOUTHERN NEVADA...WESTERN UNION AND COLUMBIA COUNTIES
UNTIL 415 AM CDT...

At 329 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles south of Hope to near Lewisville to
Canfield. Movement was east at 45 mph.

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

Locations impacted include...
Magnolia, Hope, Smackover, Stamps, Waldo, Lewisville, McNeil,
Bradley, Taylor, Emerson, Buckner, Rosston, Willisville, Bodcaw,
Bussey, Mount Holly, Smithland, Atlanta, Village and Lisbon.

LAT...LON 3303 9284 3310 9366 3339 9355 3363 9358
      3367 9311 3338 9312 3337 9279 3339 9276
      3337 9270
TIME...MOT...LOC 0829Z 270DEG 41KT 3357 9357 3339 9354 3318 9363

44

Special weather statement, Mar 31, 4:27 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Shreveport LA
427 AM CDT Wed Mar 31 2021

ARZ073-311015-
Union AR-
427 AM CDT Wed Mar 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR UNION COUNTY UNTIL 515 AM CDT...

At 427 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lisbon, or near El Dorado, moving east at 55 mph.

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

Locations impacted include...
El Dorado, Smackover, Norphlet, Huttig, Strong, Calion, Lisbon,
Urbana, Lawson, Wesson, Lapile, Moro Bay State Park, Felsenthal,
Newell, New London, Pigeon Hill, Cairo, Hillsboro, Three Creeks and
Kenova.

LAT...LON 3305 9291 3337 9290 3339 9276 3336 9268
      3337 9255 3332 9252 3332 9246 3329 9247
      3327 9244 3328 9238 3330 9235 3326 9232
      3328 9230 3325 9223 3321 9223 3321 9218
      3316 9217 3316 9211 3311 9214 3305 9211
TIME...MOT...LOC 0927Z 269DEG 49KT 3326 9274

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 1:18 AM CDT	Special Weather Statement	SHV	Titus	42 min
Mar 31, 1:38 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	52 min
Mar 31, 2:47 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass	43 min
Mar 31, 3:27 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	16 hr
Mar 30, 8:36 PM CDT	Special Weather Statement	SHV	Union	39 min
Mar 30, 8:54 PM CDT	Severe Thunderstorm Warning	SHV	Union	36 min
Mar 30, 8:59 PM CDT	Tornado Warning Tornado observed	SHV	Union	31 min
Mar 31, 7:16 AM CDT	Special Weather Statement	SHV	Union	59 min
Mar 31, 1:16 AM CDT	Special Weather Statement	SHV	Nevada	29 min
Mar 31, 3:30 AM CDT	Special Weather Statement	SHV	Columbia	45 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.