Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 78, NWS Louisville, KY

July 8, 2021Jefferson County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Jul 8, 2021, 5:28 PM EDT for Jefferson County, Indiana. It was in force for 17 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 8, 2021, 5:28 PM EDT (21:28 UTC)
Expired
Jul 8, 2021, 5:45 PM EDT
In force
17 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Jefferson County, IN

The radar

The Louisville radar (KLVX), 100 km from the middle of the area, began a volume at 21:29 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.5 hours before the alert went out and 153 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, Cncnati-Daytn, OH at 12:00Z on 2021-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 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, Cncnati-Daytn, OH at 12:00Z on 2021-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
187 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
768 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

621 
WUUS53 KLMK 082128
SVRLMK
INC077-082145-
/O.NEW.KLMK.SV.W.0078.210708T2128Z-210708T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Louisville KY
528 PM EDT Thu Jul 8 2021

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Northeastern Jefferson County in south central Indiana...

* Until 545 PM EDT.

* At 527 PM EDT, severe thunderstorms were from 13 miles southwest 
  of Versailles to 11 miles northwest of Carrollton to Madison, 
  moving east at 35 mph.

  HAZARD...65 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations in the path include...
  Canaan, North Madison, Ringwald, Manville, China, Brooksburg, 
  Belleview, Bryantsburg, and Barbersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3869 8520 3870 8522 3873 8524 3874 8529
      3874 8533 3873 8536 3874 8540 3873 8542
      3870 8545 3868 8545 3868 8547 3879 8539
      3891 8547 3891 8520
TIME...MOT...LOC 2127Z 270DEG 29KT 3890 8538 3880 8531 3874 8535 

HAIL...0.75IN
WIND...60MPH
 
$$

13
1 follow-up statement
180 
WWUS53 KLMK 082145
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
545 PM EDT Thu Jul 8 2021

INC077-082154-
/O.EXP.KLMK.SV.W.0078.000000T0000Z-210708T2145Z/
Jefferson IN-
545 PM EDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON COUNTY
WILL EXPIRE AT 545 PM EDT...
            
The storms which prompted the warning have weakened. However gusty 
winds and heavy rain are still possible with these thunderstorms.

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

LAT...LON 3869 8520 3870 8522 3873 8524 3874 8529
      3874 8533 3873 8536 3874 8540 3873 8542
      3870 8545 3868 8545 3868 8547 3879 8539
      3891 8547 3891 8520
TIME...MOT...LOC 2144Z 270DEG 29KT 3890 8521 3880 8514 3874 8518 

$$

13

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 8, 4:05 PM EDTSpecial Weather StatementLMKJefferson25 min
Jul 8, 4:46 PM EDTSpecial Weather StatementLMKJefferson, Scott29 min
Jul 8, 4:55 PM EDTSevere Thunderstorm WarningLMKOrange35 min
Jul 8, 4:58 PM EDTSevere Thunderstorm WarningLMKJefferson, Scott32 min
Jul 8, 5:10 PM EDTSpecial Weather StatementLMKDubois35 min
Jul 8, 5:24 PM EDTSpecial Weather StatementLMKOrange36 min
Jul 8, 5:45 PM EDTSpecial Weather StatementLMKOrange30 min
Jul 8, 6:04 PM EDTSpecial Weather StatementLMKOrange26 min
Jul 8, 6:20 PM EDTSpecial Weather StatementLMKCrawford25 min
Jul 8, 6:30 PM EDTSevere Thunderstorm WarningLMKHarrison30 min
Jul 8, 6:58 PM EDTSpecial Weather StatementLMKFloyd17 min
Jul 8, 7:03 PM EDTSevere Thunderstorm WarningLMKClark, Floyd27 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2021Every severe thunderstorm warning in 2021

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.