Alert archive / Arkansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 215, NWS Little Rock, AR

May 27, 20176 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 27, 2017, 11:21 PM CDT for 6 counties in Arkansas. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 27, 2017, 11:21 PM CDT (04:21 UTC)
Expired: May 27, 2017, 11:48 PM CDT
In force: 27 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Baxter County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Stone County, AR, Van Buren County, AR

The radar

The Little Rock radar (KLZK), 130 km from the middle of the area, began a volume at 04:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 7:01 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 00:00Z, 4.4 hours before the alert went out and 272 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: 3385 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 15.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 6:24 PM CDT, 4 hours 57 minutes earlier.

Area forecast discussion, May 27, 6:24 PM CDT, 4 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, May 27, 12:45 PM CDT, 10 hours 36 minutes before

Hazardous Weather Outlook...Update
National Weather Service Little Rock AR
1245 PM CDT Sat May 27 2017

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-281000-
Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard-
Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway-
Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland-
Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant-
Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita-Calhoun-
Bradley-Drew-
1245 PM CDT Sat May 27 2017

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Today and Tonight

Thunderstorms will develop later today and especially this evening
and tonight across Arkansas, as an upper storm system and eventually
a cold front move across the region. Some of the storms will be
strong to severe, with large hail, damaging winds and a few
tornadoes possible.

Later this evening and into Sunday morning, the potential for strong
to severe storms will continue, as a cold front moves through the
state. These thunderstorms could also become severe, with damaging
winds possible with the strongest storms as this activity looks to
form into a larger, more organized line or complex. Large hail and a
few brief tornadoes will also be possible as this line or complex
moves southward through much of Arkansas Sunday morning. Locally
heavy rain will also be possible, resulting in an isolated flash
flood threat.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Sunday morning, the threat for seeing severe weather will have
decreased, but the cold front will still be dropping south across
the state. Additional thunderstorms will be possible Sunday
afternoon and evening across the southeast half of the state as the
cold front pushes through this region of Arkansas. Additional strong
to severe thunderstorms may again be possible during this period.

Calmer and drier conditions will be seen for Monday into Tuesday.
The threat for hazardous weather will then become low.

.Spotter Information Statement...

Spotter activation may be needed tonight and early Sunday.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

44/62/59

In the hours before

Local storm report, May 27, 10:31 PM CDT, 50 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>

Special weather statement, May 27, 10:31 PM CDT, 50 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>

Local storm report, May 27, 10:34 PM CDT, 47 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>

Local storm report, May 27, 10:38 PM CDT, 43 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>

Special weather statement, May 27, 10:46 PM CDT, 35 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>

Special weather statement, May 27, 11:07 PM CDT, 14 minutes before

Special Weather Statement
National Weather Service Little Rock AR
1107 PM CDT SAT MAY 27 2017

ARZ003>005-012>015-021>023-280500-
Pope AR-Baxter AR-Marion AR-Searcy AR-Johnson AR-Newton AR-Stone AR-
Boone AR-Van Buren AR-Izard AR-
1107 PM CDT SAT MAY 27 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN STONE...NORTHERN
JOHNSON...NEWTON...WEST CENTRAL IZARD...SEARCY...SOUTHERN MARION...
NORTHERN VAN BUREN...SOUTHERN BOONE...SOUTHEASTERN BAXTER AND
NORTHERN POPE COUNTIES UNTIL MIDNIGHT CDT...

At 1107 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Pettigrew to near Walnut to Carver to near
Dugger. Movement was east at 50 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
these storms.

Locations impacted include...
Harrison...                       Clinton...
Marshall...                       Jasper...
Calico Rock...                    Dover...
Hector...                         Western Grove...
Valley Springs...                 Dugger...
Olvey...                          Witts Spring...
Erbie...                          Duff...
Upper Buffalo Wilderness Area...  Maumee...
Devils Knob...                    Bohannon...
Lost Valley State Park...         Pruitt...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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.

&&

A tornado watch remains in effect until 200 AM CDT for western,
central and north central Arkansas.

LAT...LON 3611 9202 3585 9221 3561 9246 3538 9309
      3572 9370 3577 9369 3576 9352 3588 9352
      3589 9350 3594 9349 3597 9345 3608 9344
      3608 9348 3612 9348 3612 9330 3624 9330
TIME...MOT...LOC 0407Z 282DEG 44KT 3577 9360 3587 9332 3600 9305 3613
9295

62

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 8:09 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton	51 min
May 27, 8:27 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Sharp	63 min
May 27, 9:34 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Marion	41 min
May 27, 9:38 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	52 min
May 27, 9:49 PM CDT	Special Weather Statement	LZK	Cleburne, Independence, Jackson, Stone, Van Buren, White and 1 more	41 min
May 27, 10:03 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton	42 min
May 27, 10:28 PM CDT	Special Weather Statement	LZK	Cleburne, Van Buren, White, Woodruff	47 min
May 27, 10:31 PM CDT	Special Weather Statement	LZK	Baxter, Marion	44 min
May 27, 10:46 PM CDT	Special Weather Statement	LZK	Boone	44 min
May 27, 11:07 PM CDT	Special Weather Statement	LZK	Newton, Pope, Searcy	53 min
May 27, 11:50 PM CDT	Special Weather Statement	LZK	Johnson, Newton, Pope, Searcy, Van Buren	40 min
May 28, 12:15 AM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Newton, Pope, Searcy	45 min
May 28, 12:38 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Garland, Logan, Perry, Pope, Scott and 1 more	37 min
May 28, 12:47 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	58 min
May 28, 12:49 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Johnson, Logan, Perry and 5 more	41 min
May 28, 1:07 AM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott	53 min
May 28, 1:24 AM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Grant, Jefferson, Lonoke, Perry and 4 more	26 min
May 28, 1:40 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Pike, Scott, Yell	50 min
May 28, 1:52 AM CDT	Special Weather Statement	LZK	Lonoke, Pulaski	38 min
May 28, 2:07 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Perry, Pike, Saline and 1 more	53 min
May 28, 2:18 AM CDT	Tornado Warning	LZK	Garland, Perry, Saline, Yell	27 min
May 28, 2:29 AM CDT	Severe Thunderstorm Warning	LZK	Grant, Hot Spring, Jefferson, Saline	31 min
May 28, 2:48 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Grant, Hot Spring	57 min
May 28, 2:49 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Grant, Jefferson, Lincoln	26 min
May 28, 3:46 AM CDT	Special Weather Statement	LZK	Calhoun, Cleveland, Ouachita	44 min
May 28, 4:27 AM CDT	Special Weather Statement	LZK	Bradley, Drew	48 min
May 28, 5:11 AM CDT	Special Weather Statement	LZK	Drew	49 min
May 28, 10:58 AM CDT	River Flood Warning	LZK	Randolph	4 days

Nearby

Severe Thunderstorm Warnings in Arkansas, 2017 Every severe thunderstorm warning 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.