Alert archive / Indiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 179, NWS Indianapolis, IN

July 26, 20234 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 26, 2023, 1:55 AM EDT for 4 counties in Indiana. 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 counties it named.

The facts

Issued
Jul 26, 2023, 1:55 AM EDT (05:55 UTC)
Expired
Jul 26, 2023, 2:30 AM EDT
In force
35 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Boone County, IN, Hamilton County, IN, Hendricks County, IN, Marion County, IN

The radar

The Indianapolis radar (KIND), 24 km from the middle of the area, began a volume at 05:55 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, 5.9 hours before the alert went out and 198 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 2023-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2899 joules per kilogram.LCLEL10008507005003002001001 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 2023-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
2899 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1180 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
1.2
Supercell composite
10.4

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 Indianapolis, IN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 1:54 AM EDT, 1 minute earlier.

Area forecast discussion, Jul 26, 1:54 AM EDT, 1 minute before
<!doctype html>
<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>
      <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>
Hazardous weather outlook, Jul 25, 3:49 PM EDT, 10 hours 6 minutes before
Hazardous Weather Outlook
National Weather Service Indianapolis IN
349 PM EDT Tue Jul 25 2023

INZ021-028>031-035>049-051>057-060>065-067>072-262000-
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, Union City,
Farmland, Parker City, Clinton, Fairview Park, Rockville, Montezuma,
Rosedale, Greencastle, Plainfield, Brownsburg, Danville,
Indianapolis, Greenfield, New Castle, Terre Haute, Brazil, Spencer,
Gosport, Martinsville, Mooresville, Greenwood, Franklin,
Shelbyville, Rushville, Sullivan, Carlisle, Shelburn, Farmersburg,
Linton, Bloomfield, Jasonville, Worthington, Bloomington, Nashville,
Columbus, Greensburg, Vincennes, Washington, Loogootee, Shoals,
Bedford, Mitchell, Seymour, and North Vernon
349 PM EDT Tue Jul 25 2023

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Isolated to widely scattered thunderstorms are possible later
tonight. Any thunderstorm that develops will produce lightning and
brief periods of heavy rainfall. The strongest storms may also
produce gusty winds and small hail.

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

Strong to severe storms appear possible on Wednesday. Expect frequent
lightning and heavy rain with any storms that develop. The main
severe hazard with Wednesday's storms will be damaging winds, but
isolated hail and perhaps an isolated tornado cannot be ruled out.

Additional thunderstorms will be possible Friday night into Saturday
night. While uncertain, there may be a risk for severe storms during
this time frame.

Peak afternoon heat index values will approach 100 to 105 degrees at
times from mid week into the early weekend. Interests can review
heat safety information at weather.gov/safety/heat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Wednesday 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, Jul 26, 12:52 AM EDT, 1 hour 3 minutes before
Special Weather Statement
National Weather Service Indianapolis IN
1252 AM EDT Wed Jul 26 2023

INZ044-045-051-052-260530-
Clay IN-Putnam IN-Parke IN-Vigo IN-
1252 AM EDT Wed Jul 26 2023

...A strong thunderstorm will impact portions of northeastern Vigo,
northwestern Clay, southern Parke and southwestern Putnam Counties
through 130 AM EDT...

At 1252 AM EDT, Doppler radar was tracking a strong thunderstorm 9
miles south of Rockville, or 14 miles northeast of Terre Haute,
moving east at 20 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Brazil around 105 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3955 8738 3973 8738 3978 8694 3951 8695
TIME...MOT...LOC 0452Z 265DEG 19KT 3964 8723

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

Puma
Special weather statement, Jul 26, 12:53 AM EDT, 1 hour 2 minutes before
Special Weather Statement
National Weather Service Indianapolis IN
1253 AM EDT Wed Jul 26 2023

INZ063>065-071-072-260545-
Brown IN-Decatur IN-Bartholomew IN-Jackson IN-Jennings IN-
1253 AM EDT Wed Jul 26 2023

...A strong thunderstorm will impact portions of southwestern
Decatur, southeastern Brown, southern Bartholomew, northern Jackson
and Jennings Counties through 145 AM EDT...

At 1253 AM EDT, Doppler radar was tracking a strong thunderstorm 7
miles northwest of Seymour, moving east at 25 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Seymour around 105 AM EDT.

Other locations in the path of this storm include North Vernon and
Vernon.

This includes Interstate 65 between mile markers 48 and 64.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3892 8548 3893 8628 3899 8628 3899 8630
      3911 8631 3919 8551
TIME...MOT...LOC 0453Z 264DEG 21KT 3903 8597

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

Puma

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 12:06 AM EDTSevere Thunderstorm WarningINDJackson, Lawrence39 min
Jul 26, 12:13 AM EDTSevere Thunderstorm Warning Considerable damage threatINDParke, Vermillion, Vigo32 min
Jul 26, 12:52 AM EDTSpecial Weather StatementINDParke38 min
Jul 26, 12:53 AM EDTSpecial Weather StatementINDJennings52 min
Jul 26, 1:17 AM EDTSevere Thunderstorm WarningINDMorgan, Putnam28 min
Jul 26, 1:27 AM EDTSevere Thunderstorm WarningINDHendricks, Putnam33 min
Jul 26, 1:52 AM EDTSevere Thunderstorm WarningINDMorgan23 min
Jul 26, 2:28 AM EDTSpecial Weather StatementINDHamilton, Johnson, Marion32 min
Jul 26, 3:04 AM EDTHeat AdvisoryINDBartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more67 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2023Every severe thunderstorm warning in 2023

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.