Alert archive / Indiana / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 145, NWS Indianapolis, IN

July 31, 20246 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 31, 2024, 10:43 AM EDT for 6 counties in Indiana. It was in force for 50 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 31, 2024, 10:43 AM EDT (14:43 UTC)
Expired: Jul 31, 2024, 11:33 AM EDT
In force: 50 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Fountain County, IN, Montgomery County, IN, Parke County, IN, Tippecanoe County, IN, Vermillion County, IN, Warren County, IN

The radar

The Indianapolis radar (KIND), 87 km from the middle of the area, began a volume at 14:47 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, 2.7 hours before the alert went out and 121 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: 2615 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.6

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 31, 10:09 AM EDT, 34 minutes earlier.

Area forecast discussion, Jul 31, 10:09 AM EDT, 34 minutes before

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Hazardous weather outlook, Jul 31, 3:49 AM EDT, 6 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Indianapolis IN
349 AM EDT Wed Jul 31 2024

INZ021-028>031-035>049-051>057-060>065-067>072-010800-
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-
349 AM EDT Wed Jul 31 2024

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Thunderstorms may return this afternoon into tonight. Severe storms
are possible, with damaging winds the primary severe threat.

Heavy rain and lightning can be expected with any thunderstorm.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Daily storm chances will continue through Friday, and some of these
storms may be severe. Damaging winds, lightning, and isolated
flooding will be the primary threats.

Potential for heat indices near or in excess of 100 degrees will
continue through mid-week.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed today into tonight.

&&

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 31, 10:29 AM EDT, 14 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
1029 AM EDT Wed Jul 31 2024

INZ028-029-035-036-043-044-051-311530-
Montgomery IN-Fountain IN-Parke IN-Warren IN-Vermillion IN-
Tippecanoe IN-Vigo IN-
1029 AM EDT Wed Jul 31 2024

...Strong thunderstorms will impact portions of northern Vigo,
Fountain, Tippecanoe, Parke, Warren, Vermillion and western
Montgomery Counties through 1130 AM EDT...

At 1028 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Milford to near Oakwood to Allerton.
Movement was east at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Lafayette, Terre Haute, Crawfordsville, West Lafayette, Clinton,
Covington, Rockville, Veedersburg, Williamsport, Newport, Attica,
Shadeland, Fairview Park, Battle Ground, Cayuga, Seelyville,
Montezuma, Waynetown, Linden, and Rosedale.

This includes the following highways...
 Interstate 65 between mile markers 172 and 183.
 Interstate 74 between mile markers 1 and 36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4056 8681 4014 8682 3987 8693 3987 8701
      3967 8701 3960 8704 3961 8720 3952 8720
      3952 8724 3949 8724 3951 8753 4048 8753
      4048 8709 4056 8709
TIME...MOT...LOC 1428Z 272DEG 35KT 4069 8774 4017 8775 3990 8793

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH

GM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 10:29 AM EDT	Special Weather Statement	IND	Fountain, Montgomery, Parke, Tippecanoe, Vermillion, Warren	61 min
Jul 31, 11:25 AM EDT	Special Weather Statement	IND	Clay, Owen, Putnam, Vigo	50 min
Jul 31, 11:32 AM EDT	Special Weather Statement	IND	Boone, Carroll, Clinton, Hendricks, Howard, Montgomery and 2 more	28 min
Jul 31, 1:03 PM EDT	Special Weather Statement	IND	Sullivan, Vigo	57 min
Jul 31, 1:16 PM EDT	Special Weather Statement	IND	Jackson	29 min
Jul 31, 1:25 PM EDT	Special Weather Statement	IND	Clay	35 min
Jul 31, 1:47 PM EDT	Special Weather Statement	IND	Clay, Greene, Owen, Sullivan	43 min
Jul 31, 1:53 PM EDT	Special Weather Statement	IND	Knox	52 min
Jul 31, 1:56 PM EDT	Special Weather Statement	IND	Jackson	34 min
Jul 31, 2:30 PM EDT	Special Weather Statement	IND	Brown, Daviess, Greene, Knox, Lawrence, Martin and 1 more	45 min
Jul 31, 3:15 PM EDT	Special Weather Statement	IND	Jackson, Jennings	45 min
Jul 31, 4:02 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Jennings	43 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2024 Every severe thunderstorm warning in 2024

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.