Alert archive / Arkansas / Special Weather Statements in 2017

Special Weather Statement, NWS Memphis, TN

March 29, 2017Randolph County, Arkansas

NWS Memphis, TN issued this special weather statement at Mar 29, 2017, 11:22 PM CDT for Randolph County, Arkansas. It was in force for 38 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 29, 2017, 11:22 PM CDT (04:22 UTC)
Expired
Mar 30, 2017, 12:00 AM CDT
In force
38 min
Issued by
NWS Memphis, TN

County Randolph County, AR

The radar

The Memphis radar (KNQA), 169 km from the middle of the area, began a volume at 04:25 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

Springfield, MO (KSGF), launched 00:00Z, 4.4 hours before the alert went out and 233 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2017-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 708 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2017-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 199 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
708 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1134 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
199 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.6

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Memphis, TN wrote its last area forecast discussion before this special weather statement went out at Mar 29, 8:25 PM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, Mar 29, 8:25 PM CDT, 2 hours 57 minutes before
<!doctype html>
<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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Mar 29, 3:37 PM CDT, 7 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service Memphis TN
337 PM CDT Wed Mar 29 2017

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-302245-
Alcorn-Benton MS-Benton TN-Calhoun-Carroll-Chester-Chickasaw-Clay-
Coahoma-Craighead-Crittenden-Crockett-Cross-DeSoto-Decatur-
Dunklin-Dyer-Fayette-Gibson-Greene-Hardeman-Hardin-Haywood-
Henderson-Henry-Itawamba-Lafayette-Lake-Lauderdale-Lawrence-
Lee AR-Lee MS-Madison-Marshall-McNairy-Mississippi-Monroe-Obion-
Panola-Pemiscot-Phillips-Poinsett-Pontotoc-Prentiss-Quitman-
Randolph-Shelby-St. Francis-Tallahatchie-Tate-Tippah-Tipton-
Tishomingo-Tunica-Union-Weakley-Yalobusha-
337 PM CDT Wed Mar 29 2017

This hazardous weather outlook is for portions of East Arkansas...
the Missouri Bootheel...North Mississippi...and West Tennessee.

.DAY ONE...Tonight

Severe thunderstorms are expected to move into Eastern Arkansas
between 10 PM and midnight. Damaging winds, large hail, and a few
tornadoes will be possible with the storms. The storms will begin
diminishing in intensity as they move east of the Mississippi
River toward morning. Isolated flash flooding is also possible.
The best chances for severe weather will occur west of a Jackson,
Tennessee to Oxford, Mississippi line.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Severe thunderstorms are expected to develop across Eastern
Arkansas around noon CDT on Thursday. The storms will intensify
as they push east of the Mississippi River during the afternoon
hours. Damaging winds, large hail, and tornadoes will be possible
across the entire Mid-South. A few tornadoes could be strong east
of the Mississippi River. The threat for severe weather will end
by 8 PM CDT Thursday Night as the storms push east of the Mid-
South.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed across the Mid South from
late this evening through early Thursday evening.

In the hours before

Special weather statement, Mar 29, 10:38 PM CDT, 44 minutes before
Special Weather Statement
National Weather Service Memphis TN
1038 PM CDT WED MAR 29 2017

ARZ058-MSZ007-010-300415-
Phillips AR-Tunica MS-Coahoma MS-
1038 PM CDT WED MAR 29 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1115 PM CDT
FOR...

Eastern Phillips County in eastern Arkansas...
Southern Tunica County in northwestern Mississippi...
Coahoma County in northwestern Mississippi...

At 1038 PM CDT...a strong thunderstorm producing ${allThreat}near
Sherard, or 11 miles southwest of Clarksdale, moving north at 85 mph.

${report2}

People in eastern Phillips...southern Tunica and Coahoma Counties
should monitor this storm closely.

LAT...LON 3399 9066 3412 9066 3412 9090 3464 9086
      3464 9055 3463 9054 3464 9050 3464 9024
      3442 9040 3399 9054
TIME...MOT...LOC 0338Z 202DEG 72KT 3413 9076
Special weather statement, Mar 29, 11:09 PM CDT, 13 minutes before
Special Weather Statement
National Weather Service Memphis TN
1109 PM CDT WED MAR 29 2017

ARZ036-048-049-058-MSZ007-300445-
St. Francis AR-Phillips AR-Lee AR-Crittenden AR-Tunica MS-
1109 PM CDT WED MAR 29 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL 1145 PM CDT
FOR...

Southeastern St. Francis County in eastern Arkansas...
Northeastern Phillips County in eastern Arkansas...
Eastern Lee County in eastern Arkansas...
Southwestern Crittenden County in eastern Arkansas...
Central Tunica County in northwestern Mississippi...

At 1108 PM CDT...a strong thunderstorm producing winds at least 40
mph was located near St Francis National Park, moving north at 50
mph.

${report2}

People in southeastern St. Francis...northeastern Phillips...eastern
Lee...southwestern Crittenden and central Tunica Counties should
monitor this storm closely.

LAT...LON 3499 9061 3499 9031 3498 9029 3495 9025
      3493 9024 3491 9025 3487 9031 3486 9030
      3486 9026 3459 9038 3459 9069
TIME...MOT...LOC 0408Z 196DEG 49KT 3455 9056
Special weather statement, Mar 29, 11:22 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Memphis TN
1122 PM CDT WED MAR 29 2017

ARZ008-017-300500-
Lawrence AR-Randolph AR-
1122 PM CDT WED MAR 29 2017

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED UNTIL MIDNIGHT CDT
FOR...

Northwestern Lawrence County in eastern Arkansas...
Western Randolph County in eastern Arkansas...

At 1122 PM CDT...a strong thunderstorm producing pea size hail or
larger and winds at least 40 mph was located near Highland in Sharp
County, or 8 miles southeast of Cherokee Village, moving northeast at
45 mph.

${report2}

People in northwestern Lawrence and western Randolph Counties should
monitor this storm closely.

LAT...LON 3650 9091 3614 9110 3615 9135 3623 9135
      3623 9133 3624 9133 3624 9126 3633 9126
      3633 9128 3637 9128 3637 9129 3639 9129
      3639 9131 3642 9131 3642 9135 3647 9136
      3648 9140 3649 9141 3650 9141
TIME...MOT...LOC 0422Z 229DEG 38KT 3621 9143

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 12:27 AM CDTSpecial Weather StatementMEGFayette, Shelby48 min
Mar 30, 4:14 AM CDTSpecial Weather StatementMEGHardeman, Hardin, McNairy91 min
Mar 30, 4:37 PM CDTSpecial Weather StatementMEGCarroll23 min
Mar 30, 6:00 PM CDTSpecial Weather StatementMEGHenderson30 min
Mar 30, 6:04 PM CDTSpecial Weather StatementMEGHenry26 min
Mar 29, 10:38 PM CDTSpecial Weather StatementMEGCoahoma37 min
Mar 29, 11:09 PM CDTSpecial Weather StatementMEGTunica36 min
Mar 29, 11:26 PM CDTSpecial Weather StatementMEGPanola34 min
Mar 29, 11:44 PM CDTSevere Thunderstorm WarningMEGLafayette, Marshall, Panola, Tate31 min
Mar 30, 2:58 AM CDTSpecial Weather StatementMEGChickasaw, Lee47 min
Mar 30, 4:19 AM CDTSpecial Weather StatementMEGTunica86 min
Mar 30, 7:00 AM CDTSpecial Weather StatementMEGMonroe60 min

Nearby

Special Weather Statements in Arkansas, 2017Every special weather statement in 2017

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.