Alert archive / Indiana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 354, NWS Indianapolis, IN

September 18, 2026Daviess County, Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Sep 18, 2026, 5:09 PM EDT for Daviess County, Knox County, Indiana. It was in force for 51 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
Sep 18, 2026, 5:09 PM EDT (21:09 UTC)
Expired
Sep 18, 2026, 6:00 PM EDT
In force
51 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Daviess County, IN, Knox County, IN

The radar

The Evansville,IN radar (KVWX), 64 km from the middle of the area, began a volume at 21:09 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, 9.2 hours before the alert went out and 199 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 2026-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 637 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 2026-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.1939Sfc1 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
637 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 8:26 PM EDTSpecial Weather StatementINDCarroll, Tippecanoe, Warren34 min
Sep 17, 8:29 PM EDTSevere Thunderstorm WarningINDCarroll, Clinton, Tippecanoe31 min
Sep 17, 8:57 PM EDTSpecial Weather StatementINDCarroll, Clinton, Fountain, Tippecanoe, Warren48 min
Sep 17, 9:29 PM EDTSpecial Weather StatementINDTipton31 min
Sep 17, 9:45 PM EDTSpecial Weather StatementINDClinton, Fountain, Montgomery30 min
Sep 17, 10:02 PM EDTSpecial Weather StatementINDHamilton, Tipton28 min
Sep 17, 10:14 PM EDTSpecial Weather StatementINDBoone, Hamilton, Montgomery31 min
Sep 17, 10:24 PM EDTAreal Flood AdvisoryINDBoone, Clinton, Fountain, Montgomery, Tippecanoe4 hr
Sep 17, 10:45 PM EDTSpecial Weather StatementINDHendricks30 min
Sep 17, 11:03 PM EDTSpecial Weather StatementINDHendricks, Johnson, Marion, Morgan27 min
Sep 17, 11:18 PM EDTAreal Flood AdvisoryINDBoone3 hr
Sep 18, 8:21 AM EDTSpecial Weather StatementINDJackson24 min
Sep 18, 3:14 PM EDTSpecial Weather StatementINDParke, Vermillion46 min
Sep 18, 3:52 PM EDTSpecial Weather StatementINDParke38 min
Sep 18, 4:07 PM EDTAreal Flood AdvisoryINDParke, Vermillion3 hr
Sep 18, 4:20 PM EDTSpecial Weather StatementINDClay, Putnam40 min
Sep 18, 4:38 PM EDTSpecial Weather StatementINDVigo22 min
Sep 18, 4:47 PM EDTSpecial Weather StatementINDMartin28 min
Sep 18, 4:55 PM EDTSpecial Weather StatementINDGreene, Monroe, Owen50 min
Sep 18, 4:57 PM EDTAreal Flood AdvisoryINDClay, Putnam3 hr
Sep 18, 4:59 PM EDTAreal Flood AdvisoryINDDaviess, Knox, Martin5 hr
Sep 18, 5:13 PM EDTSpecial Weather StatementINDMartin32 min
Sep 18, 5:34 PM EDTSpecial Weather StatementINDLawrence, Monroe41 min
Sep 18, 5:45 PM EDTAreal Flood AdvisoryINDDaviess, Greene, Knox, Martin, Sullivan4 hr
Sep 18, 5:49 PM EDTSpecial Weather StatementINDMartin41 min
Sep 18, 5:56 PM EDTSpecial Weather StatementINDDaviess34 min
Sep 18, 6:05 PM EDTAreal Flood AdvisoryINDLawrence4 hr
Sep 18, 6:12 PM EDTSpecial Weather StatementINDBrown, Jackson, Lawrence33 min
Sep 18, 6:22 PM EDTAreal Flood WarningINDDaviess, Martin3 hr
Sep 18, 6:26 PM EDTSpecial Weather StatementINDDaviess, Martin34 min
Sep 18, 6:40 PM EDTSpecial Weather StatementINDJackson35 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.