Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Indianapolis, IN

July 16, 2017Putnam County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 16, 2017, 10:39 PM EDT for Putnam County, Indiana. 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 outline as issued.

The facts

Issued
Jul 16, 2017, 10:39 PM EDT (02:39 UTC)
Expired
Jul 16, 2017, 11:15 PM EDT
In force
36 min
Issued by
NWS Indianapolis, IN

County Putnam County, IN

The radar

The Indianapolis radar (KIND), 57 km from the middle of the area, began a volume at 02:43 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

Lincoln, IL (KILX), launched 00:00Z, 2.7 hours before the alert went out and 147 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, Lincoln, IL at 00:00Z on 2017-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1204 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, Lincoln, IL at 00:00Z on 2017-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.19395878Sfc1 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
1204 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1063 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

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 Jul 16, 10:12 PM EDT, 27 minutes earlier.

Area forecast discussion, Jul 16, 10:12 PM EDT, 27 minutes before
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<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>
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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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Hazardous weather outlook, Jul 16, 5:49 PM EDT, 4 hours 50 minutes before
Hazardous Weather Outlook
National Weather Service Indianapolis IN
549 PM EDT Sun Jul 16 2017

INZ021-028>031-035>049-051>057-060>065-067>072-171000-
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 Lafayette, Frankfort, Kokomo,
Crawfordsville, Anderson, Muncie, Indianapolis, Terre Haute,
Shelbyville, Bloomington, Columbus, Vincennes, Bedford, and Seymour
549 PM EDT Sun Jul 16 2017

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: Widely Scattered thunderstorms will occur tonight. An
isolated strong storm is possible over western sections this evening.
However no outbreaks of severe weather is expected at this time.

Hazards: Cloud to ground lightning...brief heavy rain...gusty winds
and small hail.

Timing: This evening.

Discussion: A Cold front will move southeast across Indiana tonight.
A warm and unstable air mass will occur this evening...especially
over western sections.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Outlook: An isolated storm remains a possibility over southeast
portions of central Indiana on Monday. More widespread thunderstorms
are possible over all or parts of central Indiana Thursday through
through next weekend. It is too early to tell if there will be a
potential for severe storms. However, any storm is capable of
producing gusty winds, brief heavy rain and cloud to ground
lightning.

Discussion: Storms are possible across all or parts of the area
early Thursday through Saturday as another cold front drops south
toward the area and upper waves move through as well.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible this afternoon and evening.

&&

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

JH

In the hours before

Special weather statement, Jul 16, 10:39 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Indianapolis IN
1039 PM EDT SUN JUL 16 2017

INZ036-045-170315-
Montgomery IN-Putnam IN-
1039 PM EDT SUN JUL 16 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN MONTGOMERY AND NORTHERN
PUTNAM COUNTIES UNTIL 1115 PM EDT...

At 1038 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Crawfordsville, moving east at 25 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Ladoga, Roachdale, Bainbridge, New Market, Fillmore, Waveland,
Russellville, Carpentersville and Groveland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Indianapolis.

&&

LAT...LON 3997 8699 3990 8669 3963 8669 3976 8701
      3987 8701 3987 8704
TIME...MOT...LOC 0238Z 292DEG 20KT 3986 8695

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 10:52 PM EDTAreal Flood WarningINDRandolph3 hr
Jul 16, 11:27 PM EDTAreal Flood WarningINDHenry3 hr
Jul 16, 11:48 PM EDTFlash Flood WarningINDRandolph3 hr
Jul 17, 12:28 AM EDTFlash Flood WarningINDHenry3 hr
Jul 17, 1:39 AM EDTAreal Flood WarningINDDecatur, Rush, Shelby3 hr
Jul 17, 1:50 AM EDTSevere Thunderstorm WarningINDBartholomew, Decatur, Jennings28 min

Nearby

Special Weather Statements in Indiana, 2017Every special weather statement 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.