Alert archive / Indiana / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 113, NWS Indianapolis, IN

August 1, 2022Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 1, 2022, 7:56 PM EDT for Knox County, Indiana. It was in force for 21 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: Aug 1, 2022, 7:56 PM EDT (23:56 UTC)
Expired: Aug 1, 2022, 8:17 PM EDT
In force: 21 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Knox County, IN

The radar

The Evansville,IN radar (KVWX), 27 km from the middle of the area, began a volume at 23:57 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.

Issued	Product	Office	Lasted
Aug 1, 4:39 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 202 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: 341 J/kg
Mixed-layer CIN: -299 J/kg
Mixed-layer LCL: 1174 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 244 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

172 
WUUS53 KIND 012356
SVRIND
INC083-020030-
/O.NEW.KIND.SV.W.0113.220801T2356Z-220802T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
756 PM EDT Mon Aug 1 2022

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Southwestern Knox County in southwestern Indiana...

* Until 830 PM EDT.

* At 755 PM EDT, severe thunderstorms were located along a line
  extending from near St. Francisville to near Lancaster, moving
  southeast at 40 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Decker around 815 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3845 8773 3846 8776 3848 8775 3851 8765
      3855 8767 3859 8764 3859 8761 3861 8763
      3851 8749 3850 8749 3850 8753 3852 8754
      3849 8754 3850 8759 3845 8760 3844 8763
      3846 8766 3845 8767 3843 8767 3842 8774
TIME...MOT...LOC 2355Z 314DEG 34KT 3863 8770 3856 8791 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Updike

1 follow-up statement

113 
WWUS53 KIND 020017
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
817 PM EDT Mon Aug 1 2022

INC083-020027-
/O.CAN.KIND.SV.W.0113.000000T0000Z-220802T0030Z/
Knox IN-
817 PM EDT Mon Aug 1 2022

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KNOX COUNTY IS
CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southwestern Indiana.

LAT...LON 3845 8773 3846 8776 3848 8775 3851 8765
      3855 8767 3859 8764 3859 8761 3861 8763
      3851 8749 3850 8749 3850 8753 3852 8754
      3849 8754 3850 8759 3845 8760 3844 8763
      3846 8766 3845 8767 3843 8767 3842 8774
TIME...MOT...LOC 0015Z 314DEG 34KT 3849 8752 3842 8773 

$$

Updike

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 7:38 AM EDT	Special Weather Statement	IND	Clay, Owen, Parke, Putnam, Vermillion, Vigo	67 min
Aug 1, 7:45 AM EDT	Severe Thunderstorm Warning	IND	Clay, Parke, Vermillion, Vigo	45 min
Aug 1, 8:12 AM EDT	Severe Thunderstorm Warning	IND	Boone, Clay, Hendricks, Monroe, Montgomery, Morgan and 2 more	33 min
Aug 1, 8:35 AM EDT	Severe Thunderstorm Warning	IND	Boone, Brown, Hamilton, Hendricks, Johnson, Marion and 1 more	40 min
Aug 1, 9:14 AM EDT	Severe Thunderstorm Warning Considerable damage threat	IND	Decatur, Hamilton, Hancock, Henry, Johnson, Madison and 3 more	46 min
Aug 1, 9:25 AM EDT	Severe Thunderstorm Warning Considerable damage threat	IND	Delaware, Henry, Madison, Randolph	35 min
Aug 1, 9:49 AM EDT	Special Weather Statement	IND	Jackson	26 min
Aug 1, 9:54 AM EDT	Special Weather Statement	IND	Randolph	36 min
Aug 1, 6:19 PM EDT	Severe Thunderstorm Warning	IND	Knox	11 min
Aug 1, 6:32 PM EDT	Severe Thunderstorm Warning	IND	Knox	28 min
Aug 1, 6:52 PM EDT	Special Weather Statement	IND	Martin	23 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2022 Every severe thunderstorm warning in 2022

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.