Alert archive / Indiana / Special Weather Statements in 2021

Special Weather Statement, NWS Indianapolis, IN

September 14, 2021Carroll County, Indiana

NWS Indianapolis, IN issued this special weather statement at Sep 14, 2021, 6:30 PM EDT for Carroll County, Indiana. It was in force for 30 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 14, 2021, 6:30 PM EDT (22:30 UTC)
Expired: Sep 14, 2021, 7:00 PM EDT
In force: 30 min
Issued by: NWS Indianapolis, IN
Hail: 0.50 in
Wind: 30

County Carroll County, IN

The radar

The Northern Indiana radar (KIWX), 112 km from the middle of the area, began a volume at 22:34 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

Lincoln, IL (KILX), launched 12:00Z, 10.5 hours before the alert went out and 172 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: 1485 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 988 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

As transmitted.

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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 Indianapolis, IN wrote its last area forecast discussion before this special weather statement went out at Sep 14, 3:35 PM EDT, 2 hours 55 minutes earlier.

Area forecast discussion, Sep 14, 3:35 PM EDT, 2 hours 55 minutes before

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<head>
  <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 14, 5:51 PM EDT, 39 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Indianapolis IN
551 PM EDT Tue Sep 14 2021

INZ021-028>031-035>049-051>057-060>065-067>072-151000-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
Including the cities of Delphi, Flora, Williamsport, West Lebanon,
Lafayette, West Lafayette, Frankfort, Kokomo, Attica, Covington,
Veedersburg, Crawfordsville, Lebanon, Zionsville, Tipton, Fishers,
Carmel, Noblesville, Anderson, Muncie, Winchester, Clinton, Newport,
Rockville, Greencastle, Plainfield, Brownsburg, Danville,
Indianapolis, Greenfield, New Castle, Terre Haute, Brazil,
Clay City, Spencer, Martinsville, Mooresville, Greenwood, Franklin,
Shelbyville, Rushville, Sullivan, Linton, Bloomfield, Bloomington,
Nashville, Columbus, Greensburg, Vincennes, Washington, Loogootee,
Shoals, Bedford, Mitchell, Seymour, Brownstown, and North Vernon
551 PM EDT Tue Sep 14 2021

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Thunderstorms will be increasing in coverage this evening as a cold
front approaches from the northwest. Strong to severe storms are
possible at times through Midnight, especially near and north of
a Muncie to Terre Haute line. Damaging winds and cloud to ground
lightning will be the biggest threats, though large hail and
downpours are also possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms are possible Wednesday and Friday afternoon and evening
as well as at times early next week. Cloud to ground lightning, gusty
winds and localized heavy rain are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

In the hours before

Special weather statement, Sep 14, 6:30 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
630 PM EDT Tue Sep 14 2021

INZ021-142300-
Carroll IN-
630 PM EDT Tue Sep 14 2021

...A strong thunderstorm will impact portions of northern Carroll
County through 700 PM EDT...

At 630 PM EDT, Doppler radar was tracking a strong thunderstorm near
Monticello, moving northeast at 35 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This storm will remain over mainly rural areas of northern Carroll
County, including the following locations... Yeoman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4074 8653 4069 8652 4069 8640 4056 8672
      4056 8677 4066 8677 4066 8676 4067 8674
      4068 8674 4068 8676 4069 8675 4070 8676
      4072 8675 4073 8676 4074 8675
TIME...MOT...LOC 2230Z 240DEG 31KT 4067 8675

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

MK

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 14, 7:07 PM EDT	Special Weather Statement	IND	Johnson	23 min
Sep 14, 7:44 PM EDT	Special Weather Statement	IND	Tippecanoe	31 min

Nearby

Special Weather Statements in Indiana, 2021 Every special weather statement in 2021

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.