Alert archive / Kansas / Special Weather Statements in 2014

Special Weather Statement, NWS Topeka, KS

September 20, 2014Brown County, Kansas

NWS Topeka, KS issued this special weather statement at Sep 20, 2014, 11:55 AM CDT for Brown County, Kansas. It was in force for 35 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
Sep 20, 2014, 11:55 AM CDT (16:55 UTC)
Expired
Sep 20, 2014, 12:30 PM CDT
In force
35 min
Issued by
NWS Topeka, KS

County Brown County, KS

The radar

The Topeka radar (KTWX), 126 km from the middle of the area, began a volume at 16:57 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

Topeka, KS (KFOE), launched 12:00Z, 4.9 hours before the alert went out and 107 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, Topeka, KS at 12:00Z on 2014-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 747 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, Topeka, KS at 12:00Z on 2014-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.193958Sfc1 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
747 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
793 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Topeka, KS wrote its last area forecast discussion before this special weather statement went out at Sep 20, 6:37 AM CDT, 5 hours 18 minutes earlier.

Area forecast discussion, Sep 20, 6:37 AM CDT, 5 hours 18 minutes before
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  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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Hazardous weather outlook, Sep 20, 4:31 AM CDT, 7 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TOPEKA KS
431 AM CDT SAT SEP 20 2014

KSZ008>012-020>024-026-034>040-054>056-058-059-210945-
REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY-
POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS-
WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON-
431 AM CDT SAT SEP 20 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH
CENTRAL AND NORTHEAST KANSAS.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A CHANCE FOR THUNDERSTORMS ACROSS THE AREA
TODAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. A FEW OF
THE STRONGER THUNDERSTORMS MAY PRODUCE HAIL UP TO THE SIZE OF
QUARTERS AS WELL AS DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS ARE POSSIBLE IN NORTH CENTRAL KANSAS MONDAY
NIGHT...WITH CHANCES THEN SPREADING EASTWARD ACROSS THE REMAINDER
OF THE AREA BY TUESDAY NIGHT THROUGH WEDNESDAY. THUNDERSTORM
CHANCES WILL THEN LINGER ACROSS THE AREA THROUGH THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD NOT BE NEEDED THROUGH TONIGHT.

In the hours before

Special weather statement, Sep 20, 11:55 AM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TOPEKA KS
1155 AM CDT SAT SEP 20 2014

KSZ012-201730-
BROWN-
1155 AM CDT SAT SEP 20 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BROWN COUNTY...

THROUGH 1230 PM CDT...A STRONG THUNDERSTORM WILL MOVE SOUTHEAST AT 25
MPH ACROSS PORTIONS OF NORTHEASTERN BROWN COUNTY. NATIONAL WEATHER
SERVICE DOPPLER RADAR INDICATED THIS STORM IS CAPABLE OF PRODUCING
DIME SIZE HAIL...STRONG WINDS OF 40 TO 50 MPH AND VERY HEAVY RAIN.
THE STRONG THUNDERSTORM WILL MOVE ACROSS THE SAC AND FOX INDIAN
RESERVATION AND ACROSS RURAL AREAS OF NORTHEAST BROWN COUNTY.

&&

LAT...LON 3989 9534 3997 9554 4000 9560 4000 9534
TIME...MOT...LOC 1653Z 293DEG 22KT 4003 9550

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 20, 12:16 PM CDTSpecial Weather StatementTOPNemaha29 min
Sep 20, 12:47 PM CDTSpecial Weather StatementTOPNemaha28 min
Sep 20, 12:55 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha35 min
Sep 20, 1:20 PM CDTSevere Thunderstorm WarningTOPBrown, Jackson, Nemaha25 min
Sep 20, 2:20 PM CDTSpecial Weather StatementTOPNemaha40 min
Sep 20, 3:53 PM CDTSevere Thunderstorm WarningTOPWabaunsee37 min
Sep 20, 4:35 PM CDTSpecial Weather StatementTOPGeary25 min
Sep 20, 4:35 PM CDTSevere Thunderstorm WarningTOPWabaunsee25 min
Sep 20, 4:57 PM CDTSevere Thunderstorm WarningTOPLyon, Wabaunsee18 min
Sep 20, 5:07 PM CDTSpecial Weather StatementTOPGeary23 min
Sep 20, 5:31 PM CDTSpecial Weather StatementTOPMorris29 min
Sep 20, 5:44 PM CDTSpecial Weather StatementTOPLyon46 min
Sep 20, 6:11 PM CDTSpecial Weather StatementTOPMorris34 min

Nearby

Special Weather Statements in Kansas, 2014Every special weather statement in 2014

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.