Alert archive / Indiana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 311, NWS Indianapolis, IN

August 13, 2026Parke County, Vermillion County, Vigo County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 13, 2026, 3:46 PM EDT for Parke County, Vermillion County, Vigo County, Indiana. It was in force for 59 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
Aug 13, 2026, 3:46 PM EDT (19:46 UTC)
Expired
Aug 13, 2026, 4:45 PM EDT
In force
59 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Parke County, IN, Vermillion County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 92 km from the middle of the area, began a volume at 19:45 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 13, 1:30 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.8 hours before the alert went out and 118 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 12:00Z on 2026-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 882 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 12:00Z on 2026-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
882 J/kg
Mixed-layer CIN
-129 J/kg
Mixed-layer LCL
746 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.7

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 Aug 13, 2:29 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Aug 13, 2:29 PM EDT, 1 hour 17 minutes before
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Hazardous weather outlook, Aug 13, 3:17 PM EDT, 29 minutes before
Hazardous Weather Outlook
National Weather Service Indianapolis IN
317 PM EDT Thu Aug 13 2026

INZ021-028>031-035>049-051>057-060>065-067>072-141930-
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-
317 PM EDT Thu Aug 13 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Flooding will continue across mainly eastern portions of central
Indiana. Some portions of the Upper White River and Big Blue River
may reach major flood stage.

Strong to severe storms will be possible this afternoon and evening
with damaging winds as the main threat. Flash flooding then looks
likely through the overnight, mainly across the I-74 corridor.

Heavy Rain is possible along and north of the I-74 corridor tonight.
This may result in flooding and flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Heavy Rain is possible along and north of the I-74 corridor on Friday.
This may result in flooding and flash flooding.

Thunderstorms will be possible at times through the weekend along
with continued river flooding.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to remain vigilant this week as multiple rounds
of severe storms will be possible. Report incidents of Flooding. Do
not enter flooded areas.

&&

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

In the hours before

Local storm report, Aug 13, 10:47 AM EDT, 4 hours 59 minutes before
Preliminary Local Storm Report
National Weather Service Indianapolis IN
1047 AM EDT Thu Aug 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0303 PM     Tornado          3 NNW Bruceville        38.80N 87.44W
08/12/2026                   Knox               IN   NWS Storm Survey

            A brief EF-1 tornado with estimated peak
            winds of 100 mph impacted several groves of
            trees and an outbuilding. There were
            multiple videos of the tornado and drone
            footage showed many trees snapped along the
            path.

&&

GM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 8:13 PM EDTAreal Flood WarningINDHendricks, Marion13 hr
Aug 12, 8:20 PM EDTAreal Flood WarningINDBartholomew40 hr
Aug 12, 10:05 PM EDTAreal Flood WarningINDMadison38 hr
Aug 12, 10:11 PM EDTAreal Flood WarningINDDelaware38 hr
Aug 12, 10:19 PM EDTAreal Flood WarningINDHoward, Tipton11 hr
Aug 12, 10:24 PM EDTAreal Flood WarningINDHenry38 hr
Aug 12, 11:37 PM EDTAreal Flood WarningINDRush36 hr
Aug 12, 11:39 PM EDTAreal Flood WarningINDDecatur36 hr
Aug 12, 11:41 PM EDTAreal Flood WarningINDRandolph36 hr
Aug 12, 11:43 PM EDTAreal Flood WarningINDJennings9 hr
Aug 13, 1:35 AM EDTAreal Flood WarningINDClay, Greene, Sullivan, Vigo5 hr
Aug 13, 2:22 AM EDTAreal Flood WarningINDLawrence, Martin5 hr
Aug 13, 3:30 AM EDTDense Fog AdvisoryINDBoone, Carroll, Clay, Clinton, Delaware, Fountain and 21 more6 hr
Aug 13, 12:22 PM EDTRiver Flood WarningINDKnox, Sullivan17 days
Aug 13, 12:22 PM EDTRiver Flood WarningINDSullivan, Vigo14 days
Aug 13, 12:22 PM EDTRiver Flood WarningINDKnox, Sullivan18 days
Aug 13, 12:37 PM EDTRiver Flood WarningINDMonroe, Morgan, Owen6 days
Aug 13, 1:08 PM EDTRiver Flood WarningINDHamilton, Hancock, Madison, Marion66 hr
Aug 13, 3:24 PM EDTSevere Thunderstorm WarningINDFountain, Parke, Vermillion, Warren66 min
Aug 13, 3:48 PM EDTSpecial Weather StatementINDMonroe42 min
Aug 13, 4:06 PM EDTAreal Flood AdvisoryINDClay, Fountain, Montgomery, Parke, Putnam, Vermillion and 1 more3 hr
Aug 13, 4:26 PM EDTTornado WarningINDParke, Vermillion, Vigo19 min
Aug 13, 4:33 PM EDTSevere Thunderstorm WarningINDClay, Owen, Parke, Putnam, Vigo57 min
Aug 13, 4:54 PM EDTSevere Thunderstorm WarningINDClay, Owen, Sullivan, Vigo51 min
Aug 13, 5:17 PM EDTSevere Thunderstorm WarningINDBrown, Greene, Monroe, Morgan, Owen58 min
Aug 13, 5:26 PM EDTAreal Flood WarningINDBrown, Clay, Johnson, Monroe, Morgan, Owen and 3 more6 hr
Aug 13, 5:30 PM EDTSpecial Weather StatementINDJennings60 min
Aug 13, 5:54 PM EDTRiver Flood WarningINDDaviess, Greene, Knox11 days
Aug 13, 5:54 PM EDTRiver Flood WarningINDGreene, Monroe, Owen10 days
Aug 13, 6:00 PM EDTSpecial Weather StatementINDBartholomew60 min
Aug 13, 6:12 PM EDTAreal Flood WarningINDBrown, Jackson, Jennings, Lawrence, Monroe3 hr
Aug 13, 6:50 PM EDTSpecial Weather StatementINDLawrence55 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2026Every severe thunderstorm warning in 2026

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.