Alert archive / Arkansas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 68, NWS Little Rock, AR

April 11, 2016Calhoun County, Ouachita County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 11, 2016, 1:10 PM CDT for Calhoun County, Ouachita County, Arkansas. It was in force for 65 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
Apr 11, 2016, 1:10 PM CDT (18:10 UTC)
Expired
Apr 11, 2016, 2:15 PM CDT
In force
65 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
0.88 in
Wind
70.0 mph

Counties Calhoun County, AR, Ouachita County, AR

The radar

The Little Rock radar (KLZK), 146 km from the middle of the area, began a volume at 18:13 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.

IssuedProductOfficeLasted
Apr 11, 1:05 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 6.2 hours before the alert went out and 157 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, Shreveport, LA at 12:00Z on 2016-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 520 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2016-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 square meters per square second.1939587897Sfc1 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
520 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.2

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 Apr 11, 2:29 AM CDT, 10 hours 41 minutes earlier.

Area forecast discussion, Apr 11, 2:29 AM CDT, 10 hours 41 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
229 AM CDT MON APR 11 2016

.SHORT TERM...TODAY THROUGH TUESDAY NIGHT

ALL QUIET ACROSS THE CWA EARLY THIS MORNING...THOUGH A COMPLEX OF
SHRA/TSRA IS ONGOING ACROSS MUCH OF ERN OK. THIS SHRA/TSRA ACTIVITY
WILL CONTINUE TO MOVE ENE THROUGH THIS MORNING...WITH BEST POPS OVER
THE WRN AND NWRN COUNTIES BY AROUND SUNRISE. AS THIS ACTIVITY LIFTS
NE...A REMNANT MESOSCALE OR OUTFLOW BOUNDARY WILL DROP SE INTO
CENTRAL TO SWRN SECTIONS OF THE CWA. THE LATER RUNS OF THE HRRR HAVE
BEEN INDICATING THIS FEATURE WILL TRIGGER NEW CONVECTIVE ACTIVITY
LATER THIS MORNING INTO THE MIDDAY TIME FRAME ACROSS CENTRAL
SECTIONS OF THE STATE. THIS SCENARIO SEEMS REASONABLE GIVEN THE
PLACEMENT OF THE HIGHER INSTABILITY AS THIS BOUNDARY DROPS SE. SOME
STRONG TO SVR STORMS COULD BE SEEN WITH THIS ACTIVITY BY MIDDAY.THE
BEST POTENTIAL FOR SVR WX WILL BE FROM CENTRAL AR SOUTH AND SW
TOWARDS TX...WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY THREATS
WITH THE STRONGEST STORMS. THERE MAY BE ENOUGH LOW LEVEL SHR TO SEE
AN ISOLATED WEAK TORNADO AS WELL.

ADDITIONAL CONVECTIVE ACTIVITY MAY ALSO DEVELOP FURTHER NW BY THIS
AFTERNOON AS THE MAIN COLD FRONT WILL JUST BE DROPPING SOUTH INTO AR
BY THE EARLY AFTERNOON HRS. THIS FRONT WILL THEN CONTINUE TO DROP
SOUTH THROUGH THE STATE BY THIS EVENING...AS THE MAIN UPPER
SHORTWAVE TROUGH DROP SE OVER AR. AREAS ALONG AND AHEAD OF THIS MAIN
FRONT WILL THEN BE WHERE THE BEST POPS WILL EXIST...ALONG WITH THE
BEST POTENTIAL FOR SVR WX THROUGH TONIGHT. THERE WILL ALSO BE SOME
AREAS OF HEAVY RAINFALL...WITH AN ISOLATED FLASH FLOOD THREAT
DEVELOPING.

WILL HAVE POPS ENDING FROM NW TO SE BY SUNRISE TUE MORNING AS
DRIER...MORES STABLE AIR MOVES INTO THE STATE BEHIND THE FRONT.
THESE CALMER...AND COOLER CONDITIONS WILL PERSIST THROUGH THE END OF
THE SHORT TERM PERIOD.

&&

.LONG TERM...WEDNESDAY THROUGH SUNDAY

THE LONG TERM BEGINS WITH SURFACE HIGH PRESSURE OVER THE REGION...
WHILE AN UPPER SHORT MOVES ACROSS AR. CURRENT MODELS DO INDICATED A
LOW CHANCE OF CONVECTION OVER THE SOUTHERN PLAINS...AND WILL KEEP
CLOUDS AND A SLIGHT CHANCE OF RAIN IN THE SOUTHERN PARTS OF THE
STATE THROUGH THURSDAY MORNING. THEN WILL GO WITH A DRY FORECAST
FRIDAY...ALTHOUGH MODELS SLOW THE UPPER SHORT WAVE REMAINING IN THE
VICINITY...ESPECIALLY THE GFS...WITH A SLIGHT CHANCE OF CONVECTION.
WILL KEEP THE FORECAST DRY AT THIS TIME DO TO UNCERTAINTY. ON
SATURDAY...THE SOUTH WIND FLOW RETURNS TO THE REGION AND MOISTURE
LEVELS GRADUALLY INCREASE. THE FORECAST WILL STAY DRY UNTIL SUNDAY
AS AN APPROACHING SYSTEM BEGINS TO AFFECT THE FAR WESTERN AREAS OF
AR. A SLIGHT TO LOW CHANCE OF RAIN IS PUT INTO THE FORECAST.

TEMPERATURES WILL START AROUND OF A BIT BELOW NORMAL VALUES ON
WEDNESDAY...THEN GRADUALLY WARM TO ABOVE NORMAL VALUES INTO THE
WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
BATESVILLE AR     71  44  62  40 /  80  60  10   0
CAMDEN AR         77  52  67  47 /  80  80   0  10
HARRISON AR       68  39  60  37 /  80  40   0   0
HOT SPRINGS AR    72  51  64  45 /  80  80   0  10
LITTLE ROCK   AR  72  49  64  43 /  80  80   0  10
MONTICELLO AR     75  52  66  46 /  80  80  10  10
MOUNT IDA AR      73  50  65  44 /  80  80   0  10
MOUNTAIN HOME AR  68  41  62  38 /  80  40   0   0
NEWPORT AR        70  44  62  39 /  80  60  10   0
PINE BLUFF AR     73  50  64  44 /  80  80  10  10
RUSSELLVILLE AR   73  48  65  43 /  80  60   0  10
SEARCY AR         69  47  62  40 /  80  70  10   0
STUTTGART AR      72  48  63  42 /  80  80  10  10
&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

SHORT TERM...62 / LONG TERM...59
Hazardous weather outlook, Apr 11, 3:07 AM CDT, 10 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
307 AM CDT MON APR 11 2016

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-121000-
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-
307 AM CDT MON APR 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

SOME STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE THROUGH
TONIGHT. THE BEST CHANCES FOR SEEING SEVERE WEATHER WILL BE ACROSS
MUCH OF CENTRAL AND SOUTHERN ARKANSAS...OR SOUTH OF A LINE FROM
FORT SMITH...TO CONWAY...TO DES ARC. SOME ISOLATED SEVERE WEATHER
COULD STILL BE SEEN NORTH OF THIS LINE.

EXPECT DAMAGING WINDS AND LARGE HAIL WITH THE STRONGEST
STORMS...WITH AN ISOLATED TORNADO ALSO POSSIBLE. SOME HEAVY
RAINFALL COULD ALSO BE SEEN...AS 1 TO 2 INCHES COULD FALL
RAPIDLY...WITH LOCALLY HIGHER AMOUNTS. AS A RESULT...AN ISOLATED
FLASH FLOOD THREAT WILL EXIST...MAINLY ACROSS THE SOUTHERN HALF OF
THE STATE.

THE THREAT FOR HAZARDOUS WEATHER WILL DECREASE BY LATE TONIGHT AND
ESPECIALLY TUESDAY MORNING AS THE STORM SYSTEM MOVES OUT OF THE
REGION.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE THREAT FOR HAZARDOUS WEATHER WILL REMAIN LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH TONIGHT.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND
CLICK ON CENTRAL ARKANSAS.

62

In the hours before

Special weather statement, Apr 11, 10:56 AM CDT, 2 hours 14 minutes before
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Special weather statement, Apr 11, 11:24 AM CDT, 1 hour 46 minutes before
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Local storm report, Apr 11, 11:44 AM CDT, 1 hour 26 minutes before
<!doctype html>
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Special weather statement, Apr 11, 11:54 AM CDT, 1 hour 16 minutes before
<!doctype html>
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    <section class="card" role="status" aria-live="polite">
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        Please try again in a few minutes.
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Local storm report, Apr 11, 12:32 PM CDT, 38 minutes before
<!doctype html>
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<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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Local storm report, Apr 11, 12:41 PM CDT, 29 minutes before
<!doctype html>
<html lang="en">
<head>
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  <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>

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 3:49 AM CDTSpecial Weather StatementLZKScott26 min
Apr 11, 3:59 AM CDTSpecial Weather StatementLZKLogan46 min
Apr 11, 4:07 AM CDTSevere Thunderstorm WarningLZKJohnson, Logan, Pope, Scott, Yell53 min
Apr 11, 4:16 AM CDTSpecial Weather StatementLZKScott29 min
Apr 11, 4:51 AM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Johnson, Logan, Perry, Pope and 2 more23 min
Apr 11, 5:13 AM CDTSpecial Weather StatementLZKConway, Van Buren32 min
Apr 11, 5:53 AM CDTSpecial Weather StatementLZKFaulkner, White37 min
Apr 11, 8:52 AM CDTSevere Thunderstorm WarningLZKMontgomery, Pike, Polk38 min
Apr 11, 9:38 AM CDTSpecial Weather StatementLZKGarland, Montgomery37 min
Apr 11, 10:03 AM CDTSpecial Weather StatementLZKPolk42 min
Apr 11, 10:56 AM CDTSpecial Weather StatementLZKHot Spring49 min
Apr 11, 11:09 AM CDTSevere Thunderstorm WarningLZKGrant, Hot Spring, Saline36 min
Apr 11, 11:24 AM CDTSpecial Weather StatementLZKClark66 min
Apr 11, 11:54 AM CDTSpecial Weather StatementLZKCleveland, Dallas, Grant, Jefferson51 min
Apr 11, 11:57 AM CDTSevere Thunderstorm WarningLZKArkansas, Grant, Jefferson, Lincoln48 min
Apr 11, 12:40 PM CDTSevere Thunderstorm WarningLZKArkansas, Bradley, Cleveland, Desha, Drew, Jefferson and 1 more50 min
Apr 11, 1:27 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha33 min
Apr 11, 1:56 PM CDTSevere Thunderstorm WarningLZKBradley, Calhoun, Drew64 min
Apr 11, 4:00 PM CDTSpecial Weather StatementLZKPolk30 min
Apr 11, 6:32 PM CDTSpecial Weather StatementLZKDallas43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2016Every severe thunderstorm warning in 2016

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.