Alert archive / Indiana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Indianapolis, IN

May 31, 2018Daviess County, Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 31, 2018, 12:48 PM EDT for Daviess County, Knox County, Indiana. It was in force for 42 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 31, 2018, 12:48 PM EDT (16:48 UTC)
Expired
May 31, 2018, 1:30 PM EDT
In force
42 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), 65 km from the middle of the area, began a volume at 16:51 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.

What was reported inside it

TimeReportWhereRemark
May 31, 1:00 PM EDTTSTM WND DMG1 Ne Bicknell, IN5 FOOT DIAMETER TREE SNAPPED AT BASE ALONG 9TH STREET.
May 31, 1:00 PM EDTTSTM WND DMGBicknell, IN10 INCH DIAMETER LIVE TREE DOWN AT 9TH AND ALEXANDER.
May 31, 1:00 PM EDTTSTM WND GST 601 Nne Bicknell, INRELAYED VIA AMATEUR RADIO CALLSIGN KC9CW.
May 31, 1:19 PM EDTTSTM WND GST 45Portersville, IN45-50 MPH WINDS REPORTED BY A TRAINED SPOTTER IN PORTERSVILLE AREA NW OF DUBOIS COUNTY.
May 31, 1:24 PM EDTTSTM WND GST 45Portersville, IN45-50 MPH WINDS REPORTED BY TRAINED SPOTTER IN PORTERSVILLE AREA, NW OF DUBOIS COUNTY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 31, 11:31 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.8 hours before the alert went out and 219 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 2018-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 828 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 2018-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
828 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1157 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

230 
WUUS53 KIND 311648
SVRIND
INC027-083-311730-
/O.NEW.KIND.SV.W.0021.180531T1648Z-180531T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
1248 PM EDT THU MAY 31 2018

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Northeastern Knox County in southwestern Indiana...
  Daviess County in southwestern Indiana...

* Until 130 PM EDT.

* At 1247 PM EDT, a severe thunderstorm was located near Petersburg,
  moving northeast at 55 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Washington, Bicknell, Loogootee, Odon, Elnora, Oaktown, Wheatland,
  Bruceville, Plainville, Sandborn, Montgomery, Edwardsport,
  Cannelburg, Alfordsville, West Boggs Lake, Freelandville, Glendale
  Fishery and Portersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3850 8696 3850 8698 3851 8700 3851 8702
      3852 8709 3854 8711 3853 8712 3854 8717
      3855 8718 3855 8720 3854 8722 3855 8725
      3890 8753 3890 8692 3850 8692 3851 8693
      3849 8694
TIME...MOT...LOC 1647Z 244DEG 46KT 3856 8733 

HAIL...<.75IN
WIND...60MPH
 
$$

PUMA
3 follow-up statements
107 
WWUS53 KIND 311703
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
103 PM EDT THU MAY 31 2018

INC027-083-311730-
/O.CON.KIND.SV.W.0021.000000T0000Z-180531T1730Z/
Knox IN-Daviess IN-
103 PM EDT THU MAY 31 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM EDT
FOR NORTHEASTERN KNOX AND DAVIESS COUNTIES...

At 103 PM EDT, a severe thunderstorm was located near Washington, or
16 miles northeast of Petersburg, moving northeast at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Trained weather spotters. 

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

Trained weather spotters reported 60 mph winds near Bicknell.

Locations impacted include...
Washington, Bicknell, Loogootee, Odon, Elnora, Oaktown, Wheatland,
Bruceville, Plainville, Sandborn, Montgomery, Edwardsport,
Cannelburg, Alfordsville, West Boggs Lake, Freelandville, Glendale
Fishery and Portersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3850 8696 3850 8698 3851 8700 3851 8702
      3852 8709 3854 8711 3853 8712 3854 8717
      3855 8718 3855 8720 3854 8722 3855 8725
      3890 8753 3890 8692 3850 8692 3851 8693
      3849 8694
TIME...MOT...LOC 1703Z 246DEG 42KT 3871 8715 

HAIL...<.75IN
WIND...60MPH
 
$$

PUMA
491 
WWUS53 KIND 311721
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
121 PM EDT THU MAY 31 2018

INC027-083-311730-
/O.CON.KIND.SV.W.0021.000000T0000Z-180531T1730Z/
Knox IN-Daviess IN-
121 PM EDT THU MAY 31 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM EDT
FOR NORTHEASTERN KNOX AND DAVIESS COUNTIES...

At 120 PM EDT, a severe thunderstorm was located 10 miles northwest
of Shoals, or 23 miles west of Bedford, moving northeast at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Trained weather spotters. 

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

Locations impacted include...
Washington, Bicknell, Loogootee, Odon, Elnora, Oaktown, Wheatland,
Bruceville, Plainville, Montgomery, Edwardsport, Cannelburg,
Alfordsville, West Boggs Lake, Freelandville, Glendale Fishery and
Portersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3889 8752 3889 8692 3850 8692 3851 8693
      3849 8694 3850 8696 3850 8698 3851 8700
      3851 8702 3852 8709 3854 8711 3853 8712
      3854 8717 3855 8718 3855 8720 3854 8722
      3855 8725
TIME...MOT...LOC 1720Z 246DEG 44KT 3879 8692 

HAIL...<.75IN
WIND...60MPH
 
$$

PUMA
153 
WWUS53 KIND 311725
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
125 PM EDT THU MAY 31 2018

INC027-083-311735-
/O.EXP.KIND.SV.W.0021.000000T0000Z-180531T1730Z/
Knox IN-Daviess IN-
125 PM EDT THU MAY 31 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KNOX AND DAVIESS
COUNTIES WILL EXPIRE AT 130 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 600 PM EDT for
southwestern Indiana.

LAT...LON 3889 8752 3889 8692 3850 8692 3851 8693
      3849 8694 3850 8696 3850 8698 3851 8700
      3851 8702 3852 8709 3854 8711 3853 8712
      3854 8717 3855 8718 3855 8720 3854 8722
      3855 8725
TIME...MOT...LOC 1725Z 244DEG 46KT 3881 8686 

$$

PUMA

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 12:08 PM EDTSevere Thunderstorm WarningINDKnox52 min
May 31, 1:01 PM EDTTornado WarningINDDaviess14 min
May 31, 1:09 PM EDTSevere Thunderstorm WarningINDMartin36 min
May 31, 1:18 PM EDTSevere Thunderstorm WarningINDGreene, Sullivan42 min
May 31, 1:24 PM EDTSevere Thunderstorm WarningINDGreene, Lawrence, Monroe36 min
May 31, 1:48 PM EDTSevere Thunderstorm WarningINDBartholomew, Brown, Jackson, Monroe42 min
May 31, 2:24 PM EDTSevere Thunderstorm WarningINDBartholomew, Decatur, Jackson, Jennings36 min
May 31, 2:51 PM EDTSpecial Weather StatementINDMarion24 min
May 31, 2:55 PM EDTSpecial Weather StatementINDHendricks35 min
May 31, 3:12 PM EDTSevere Thunderstorm WarningINDHancock, Madison, Marion33 min
May 31, 3:36 PM EDTSevere Thunderstorm WarningINDHancock, Henry, Madison39 min
May 31, 3:46 PM EDTSevere Thunderstorm WarningINDHenry, Rush44 min
May 31, 4:21 PM EDTSpecial Weather StatementINDRandolph39 min
May 31, 7:13 PM EDTSpecial Weather StatementINDFountain47 min
May 31, 7:23 PM EDTSevere Thunderstorm WarningINDFountain, Vermillion, Warren52 min
May 31, 7:25 PM EDTSpecial Weather StatementINDCarroll35 min
May 31, 7:31 PM EDTSevere Thunderstorm WarningINDFountain, Parke, Vermillion44 min
May 31, 7:50 PM EDTSpecial Weather StatementINDTippecanoe25 min
May 31, 7:56 PM EDTSevere Thunderstorm WarningINDFountain, Parke23 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2018Every severe thunderstorm warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.