Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 268, NWS Little Rock, AR

July 16, 2018Faulkner County, Van Buren County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 16, 2018, 12:39 PM CDT for Faulkner County, Van Buren County, Arkansas. It was in force for 36 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
Jul 16, 2018, 12:39 PM CDT (17:39 UTC)
Expired
Jul 16, 2018, 1:15 PM CDT
In force
36 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Faulkner County, AR, Van Buren County, AR

The radar

The Little Rock radar (KLZK), 60 km from the middle of the area, began a volume at 17:43 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 12:00Z, 5.7 hours before the alert went out and 211 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 12:00Z on 2018-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 750 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2018-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939Sfc1 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
750 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 16, 6:45 AM CDT, 5 hours 54 minutes earlier.

Area forecast discussion, Jul 16, 6:45 AM CDT, 5 hours 54 minutes before
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Hazardous weather outlook, Jul 16, 5:01 AM CDT, 7 hours 38 minutes before
Hazardous Weather Outlook
National Weather Service Little Rock AR
501 AM CDT Mon Jul 16 2018

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-171015-
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-
501 AM CDT Mon Jul 16 2018

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

.DAY ONE...Today and Tonight

Scattered thunderstorms will be possible today and tonight over
much of Arkansas, especially from northwest to central areas. An
isolated strong to briefly severe storm will be possible mainly in
the afternoon to early evening. Stronger storms will be capable
of producing gusty winds, dangerous lightning and localized heavy
rainfall. The overall threat for a severe thunderstorm will remain
low and isolated.

Heat index values will be in the 90s to around 100 degrees today,
mainly this afternoon to early evening. Extra precautions should
be taken to minimize the affects of the heat.

.DAYS TWO THROUGH SEVEN...Tuesday Through Sunday

Thunderstorms will become a bit more scattered and common by the
middle of this week, with the best chances for seeing thunderstorms
during the afternoon hours Monday through Thursday. While organized
severe weather is not expected this far out, a few strong storms may
be possible. Chances for thunderstorms decrease by the end of the
week, though some isolated thunderstorms will remain possible each
afternoon Friday through Sunday.

Also, heat index values will remain elevated through the week.
Most locations will see heat index values in the upper 90s to
just over 100 degrees, while some areas may see heat index values
exceed 105 degrees in the afternoons.

.Spotter Information Statement...

Spotter activation is not anticipated today and tonight.

&&

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

59/62

In the hours before

Special weather statement, Jul 16, 12:35 PM CDT, 4 minutes before
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  <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>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 7:28 PM CDTSpecial Weather StatementLZKSaline32 min
Jul 15, 8:23 PM CDTSpecial Weather StatementLZKLonoke37 min
Jul 15, 9:39 PM CDTSpecial Weather StatementLZKLonoke36 min
Jul 15, 10:04 PM CDTSpecial Weather StatementLZKJefferson26 min
Jul 16, 11:52 AM CDTSevere Thunderstorm WarningLZKCleburne, Stone23 min
Jul 16, 12:35 PM CDTSpecial Weather StatementLZKFaulkner25 min
Jul 16, 12:47 PM CDTSpecial Weather StatementLZKMarion28 min
Jul 16, 12:50 PM CDTSpecial Weather StatementLZKPulaski25 min
Jul 16, 12:59 PM CDTSpecial Weather StatementLZKFaulkner31 min
Jul 16, 1:23 PM CDTSpecial Weather StatementLZKPulaski37 min
Jul 16, 1:45 PM CDTSpecial Weather StatementLZKPulaski30 min
Jul 16, 1:47 PM CDTSpecial Weather StatementLZKIndependence28 min
Jul 16, 1:51 PM CDTSevere Thunderstorm WarningLZKFaulkner, Pulaski24 min
Jul 16, 2:10 PM CDTSpecial Weather StatementLZKSaline35 min
Jul 16, 2:29 PM CDTSpecial Weather StatementLZKGrant31 min
Jul 16, 2:32 PM CDTFlash Flood WarningLZKBoone, Newton118 min
Jul 16, 2:32 PM CDTSevere Thunderstorm WarningLZKGrant, Hot Spring, Saline28 min
Jul 16, 2:56 PM CDTSpecial Weather StatementLZKGrant34 min
Jul 16, 3:02 PM CDTSevere Thunderstorm WarningLZKGrant, Jefferson28 min
Jul 16, 3:29 PM CDTSevere Thunderstorm WarningLZKArkansas, Cleveland, Jefferson, Lincoln28 min
Jul 16, 3:36 PM CDTSpecial Weather StatementLZKNewton24 min
Jul 16, 3:53 PM CDTSpecial Weather StatementLZKArkansas37 min
Jul 16, 4:23 PM CDTSpecial Weather StatementLZKMontgomery37 min
Jul 16, 4:41 PM CDTSpecial Weather StatementLZKYell34 min
Jul 16, 4:55 PM CDTSevere Thunderstorm WarningLZKPerry, Yell35 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2018Every severe thunderstorm warning in 2018

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.