Alert archive / Indiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 76, NWS Louisville, KY

July 8, 2021Orange County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Jul 8, 2021, 4:55 PM EDT for Orange County, 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 outline as issued.

The facts

Issued: Jul 8, 2021, 4:55 PM EDT (20:55 UTC)
Expired: Jul 8, 2021, 5:30 PM EDT
In force: 35 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Orange County, IN

The radar

The Louisville radar (KLVX), 90 km from the middle of the area, began a volume at 20:54 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, 8.9 hours before the alert went out and 245 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: 764 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

077 
WUUS53 KLMK 082055
SVRLMK
INC117-082130-
/O.NEW.KLMK.SV.W.0076.210708T2055Z-210708T2130Z/

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

The National Weather Service in Louisville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Orange County in south central Indiana...

* Until 530 PM EDT.

* At 455 PM EDT, a severe thunderstorm was located 7 miles northeast
  of Shoals, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will remain over mainly rural areas of
  northwestern Orange County, including the following locations...
  Orangeville, Bonds, Hindostan, Scarlet, Abydel, Orleans and
  Leipsic.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3869 8638 3868 8636 3855 8653 3864 8668
      3869 8668
TIME...MOT...LOC 2055Z 302DEG 18KT 3872 8667 

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

JML

1 follow-up statement

964 
WWUS53 KLMK 082125
SVSLMK

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

INC117-082134-
/O.EXP.KLMK.SV.W.0076.000000T0000Z-210708T2130Z/
Orange IN-
525 PM EDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ORANGE COUNTY
WILL EXPIRE AT 530 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3869 8638 3868 8636 3855 8653 3864 8668
      3869 8668
TIME...MOT...LOC 2124Z 302DEG 18KT 3864 8651 

$$

JML

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 4:05 PM EDT	Special Weather Statement	LMK	Jefferson	25 min
Jul 8, 4:46 PM EDT	Special Weather Statement	LMK	Jefferson, Scott	29 min
Jul 8, 4:58 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson, Scott	32 min
Jul 8, 5:10 PM EDT	Special Weather Statement	LMK	Dubois	35 min
Jul 8, 5:24 PM EDT	Special Weather Statement	LMK	Orange	36 min
Jul 8, 5:28 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	17 min
Jul 8, 5:45 PM EDT	Special Weather Statement	LMK	Orange	30 min
Jul 8, 6:04 PM EDT	Special Weather Statement	LMK	Orange	26 min
Jul 8, 6:20 PM EDT	Special Weather Statement	LMK	Crawford	25 min
Jul 8, 6:30 PM EDT	Severe Thunderstorm Warning	LMK	Harrison	30 min
Jul 8, 6:58 PM EDT	Special Weather Statement	LMK	Floyd	17 min
Jul 8, 7:03 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Floyd	27 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2021 Every 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.