Alert archive / Indiana / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 147, NWS Indianapolis, IN

August 8, 2019Johnson County, Shelby County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 8, 2019, 7:26 PM EDT for Johnson County, Shelby County, Indiana. It was in force for 34 min. 1 report 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: Aug 8, 2019, 7:26 PM EDT (23:26 UTC)
Expired: Aug 8, 2019, 8:00 PM EDT
In force: 34 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Johnson County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 42 km from the middle of the area, began a volume at 23:29 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.

What was reported inside it

Time	Report	Where	Remark
Aug 8, 7:38 PM EDT	TSTM WND DMG	2 Sw Shelbyville, IN	SMALL TREE BRANCHES WERE BLOWN DOWN.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 12 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.4 hours before the alert went out and 176 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: 25 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1412 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

448 
WUUS53 KIND 082326
SVRIND
INC081-145-090000-
/O.NEW.KIND.SV.W.0147.190808T2326Z-190809T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
726 PM EDT Thu Aug 8 2019

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Shelby County in central Indiana...
  Northeastern Johnson County in central Indiana...

* Until 800 PM EDT.

* At 725 PM EDT, a severe thunderstorm was located 8 miles northeast
  of Franklin, or 9 miles west of Shelbyville, moving southeast at 40
  mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Shelbyville, Franklin, Flat Rock, Geneva, St. Paul, Fairland,
  Marietta, Waldron and Boggstown.

This includes the following highways...
 Interstate 65 between mile markers 82 and 86, and between mile
markers 90 and 97.
 Interstate 74 between mile markers 101 and 123.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3935 8563 3935 8592 3957 8608 3964 8601
      3964 8595 3968 8595 3963 8563
TIME...MOT...LOC 2325Z 300DEG 35KT 3956 8594 

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

NIELD

2 follow-up statements

936 
WWUS53 KIND 082343
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
743 PM EDT Thu Aug 8 2019

INC081-082352-
/O.CAN.KIND.SV.W.0147.000000T0000Z-190809T0000Z/
Johnson IN-
743 PM EDT Thu Aug 8 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JOHNSON COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3935 8563 3935 8592 3940 8595 3952 8595
      3959 8588 3963 8563
TIME...MOT...LOC 2342Z 300DEG 35KT 3947 8575 

$$

INC145-090000-
/O.CON.KIND.SV.W.0147.000000T0000Z-190809T0000Z/
Shelby IN-
743 PM EDT Thu Aug 8 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SHELBY COUNTY...

At 742 PM EDT, a severe thunderstorm was located near Shelbyville,
moving southeast at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Shelbyville, Flat Rock, Geneva, St. Paul, Fairland, Marietta and
Waldron.

This includes the following highways...
 Interstate 65 between mile markers 82 and 83.
 Interstate 74 between mile markers 109 and 123.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3935 8563 3935 8592 3940 8595 3952 8595
      3959 8588 3963 8563
TIME...MOT...LOC 2342Z 300DEG 35KT 3947 8575 

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

NIELD

615 
WWUS53 KIND 082353
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
753 PM EDT Thu Aug 8 2019

INC145-090002-
/O.EXP.KIND.SV.W.0147.000000T0000Z-190809T0000Z/
Shelby IN-
753 PM EDT Thu Aug 8 2019

...THE SEVERE THUNDERSTORM WARNING FOR SHELBY COUNTY WILL EXPIRE AT
800 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 3935 8563 3935 8592 3940 8595 3952 8595
      3959 8588 3963 8563
TIME...MOT...LOC 2352Z 300DEG 35KT 3943 8566 

$$

NIELD

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Indianapolis, IN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 4:18 PM EDT, 3 hours 8 minutes earlier.

Area forecast discussion, Aug 8, 4:18 PM EDT, 3 hours 8 minutes before

Area Forecast Discussion
National Weather Service Indianapolis IN
418 PM EDT Thu Aug 8 2019

.UPDATE...
The AVIATION Section has been updated below.

&&

.SYNOPSIS...
Issued at 332 PM EDT Thu Aug 8 2019

A weak cold front may spark a few showers or storms this afternoon
into tonight, with a pulse strong to severe storm or two possible.
In the wake of the front, high pressure will return dry weather to
the area through the weekend, with some low chances for storms
early next week on the periphery of the weakening ridge.

&&

.NEAR TERM /Tonight/...
Issued at 332 PM EDT Thu Aug 8 2019

Finally starting to see a few isolated storms developing across
central Indiana. The adequate instability and shear may be enough
for a pulse severe storm or two but an organized severe threat is
unlikely. Isolated storms may persist into the overnight in some
areas, but coverage should be low. The weak boundary will push
through the area tonight and bring an end to storms most areas by
morning.

Lows tonight will generally be in the 60s.

&&

.SHORT TERM /Friday through Sunday/...
Issued at 332 PM EDT Thu Aug 8 2019

While low chances for a stray storm may linger across far southern
fringes of the area tomorrow nearest the weak boundary, most of
central Indiana will be dry from Friday through the weekend as
high pressure drifts across the area.

Temperatures look to be seasonable for the time of year, and the
initialization handled this well.

&&

.LONG TERM /Sunday Night through Thursday/...

Issued at 242 PM EDT Thu Aug 8 2019

The ECMWF suggests a quick moving short wave will push across the
Great Lakes and Northern Indiana on Monday through early Tuesday.
It is during this period that chances for showers and
thunderstorms will be best. However...confidence remains rather
low as deep gulf moisture remains blocked by large high pressure
over the deep south and Texas.

After this Pacific wave passes NW flow continues to resume through
THursday with ridging aloft amplifying over the western plains.
This should result in subsidence and high pressure across Indiana
and the Great lakes. Thus have trended toward a dry forecast for
Wednesday through Thursday along with seasonable temperatures.

&&

.AVIATION /Discussion for the 08/21Z TAF Update/...

Issued at 416 PM EDT Thu Aug 8 2019

Update...
Inserted mention of thunderstorms at KIND this evening and
increased wind gusts to 24 kts.

Previous Discussion...
Mainly VFR conditions will be expected this TAF period.

A surface trough passing through the area was generating showers
and Thunderstorms over PA and OH. The tail of the trough over
Indiana had yet developed any TSRA...however convective
temperatures were just being reached and GOES16 shows CU
development across the forecast area. Thus will continue to keep a
VCSH/VCTS mention in the Tafs although confidence remains low.

High Pressure and is expected to build in the wake of the trough
today and with the loss of daytime heating this evening...VFR
conditions are expected to continue thereafter.

&&

.IND WATCHES/WARNINGS/ADVISORIES...NONE.

&&

SYNOPSIS...Nield
NEAR TERM...Nield
SHORT TERM...Nield
LONG TERM...Puma
AVIATION...JP/TDUD

Hazardous weather outlook, Aug 8, 3:43 PM EDT, 3 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Indianapolis IN
343 PM EDT Thu Aug 8 2019

INZ021-028>031-035>049-051>057-060>065-091945-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-
Including the cities of Delphi, Flora, Williamsport, West Lebanon,
Lafayette, West Lafayette, Frankfort, Kokomo, Attica, Covington,
Veedersburg, Crawfordsville, Lebanon, Zionsville, Tipton, Fishers,
Carmel, Noblesville, Anderson, Muncie, Winchester, Clinton, Newport,
Rockville, Greencastle, Plainfield, Brownsburg, Danville,
Indianapolis, Greenfield, Cumberland, New Castle, Terre Haute,
Brazil, Clay City, Spencer, Martinsville, Mooresville, Greenwood,
Franklin, Shelbyville, Rushville, Sullivan, Linton, Bloomfield,
Bloomington, Nashville, Columbus, and Greensburg
343 PM EDT Thu Aug 8 2019

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: Isolated storms are possible. A strong storm or two cannot
be ruled out.

Hazards: Large hail, damaging winds, heavy rain, lightning.

Timing: Thunderstorms are possible tonight. The best chance for any
severe storms will be through 900 PM.

Discussion: A cold front will move into the area, bringing chances
for showers and thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Outlook: Thunderstorms are possible at times from Sunday evening through
Tuesday night. Lightning is a threat from any thunderstorm.

Discussion: A couple of fronts will bring chances for showers and
thunderstorms to central Indiana.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

INZ067>072-091945-
Knox-Daviess-Martin-Lawrence-Jackson-Jennings-
Including the cities of Vincennes, Washington, Loogootee, Shoals,
Bedford, Mitchell, Seymour, Brownstown, and North Vernon
343 PM EDT Thu Aug 8 2019

This hazardous weather outlook is for central Indiana.

.DAY ONE...This Afternoon and Tonight.

Outlook: Isolated storms are possible. A strong storm or two cannot
be ruled out.

Hazards: Large hail, damaging winds, heavy rain, lightning.

Timing: Thunderstorms are possible tonight. The best chance for any
severe storms will be through 900 PM.

Discussion: A cold front will move into the area, bringing chances
for showers and thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Outlook: Thunderstorms are possible Friday, and at times from Sunday
evening through Tuesday night. Lightning is a threat from any
thunderstorm.

Discussion: A couple of fronts will bring chances for showers and
thunderstorms to central Indiana.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

In the hours before

Special weather statement, Aug 8, 5:14 PM EDT, 2 hours 12 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
514 PM EDT Thu Aug 8 2019

INZ037-039-046-047-082215-
Hendricks IN-Boone IN-Hamilton IN-Marion IN-
514 PM EDT Thu Aug 8 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN HENDRICKS...
MARION...SOUTHEASTERN BOONE AND SOUTHWESTERN HAMILTON COUNTIES UNTIL
615 PM EDT...

At 514 PM EDT, Doppler radar was tracking a strong thunderstorm near
Zionsville, or 15 miles northwest of Indianapolis, moving southeast
at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Indianapolis, Carmel, Fishers, Greenwood, Lawrence, Brownsburg,
Lebanon, Beech Grove, Zionsville, Speedway, Southport, Cumberland,
McCordsville, Whitestown, Meridian Hills, Warren Park, Clermont,
Homecroft, Rocky Ripple and Williams Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3993 8593 3992 8594 3987 8594 3987 8595
      3964 8595 3963 8618 3996 8655 4006 8644
TIME...MOT...LOC 2114Z 303DEG 25KT 3994 8634

NIELD

Special weather statement, Aug 8, 5:46 PM EDT, 1 hour 40 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
546 PM EDT Thu Aug 8 2019

INZ036-037-046-082245-
Montgomery IN-Hendricks IN-Boone IN-
546 PM EDT Thu Aug 8 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HENDRICKS...BOONE AND
EAST CENTRAL MONTGOMERY COUNTIES UNTIL 645 PM EDT...

At 546 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Lebanon, or 13 miles east of Crawfordsville, moving
east at 25 mph.

Penny size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Brownsburg, Lebanon, Zionsville, Pittsboro, Whitestown, Thorntown,
Jamestown, Lizton, Advance, New Ross and Ulen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4008 8624 3992 8629 3992 8633 3977 8633
      3996 8679 4014 8669
TIME...MOT...LOC 2146Z 291DEG 21KT 4000 8665

NIELD

Local storm report, Aug 8, 6:04 PM EDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
604 PM EDT THU AUG 8 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0556 PM     HAIL             1 WNW INDIANAPOLIS      39.78N 86.16W
08/08/2019  E0.25 INCH       MARION             IN   BROADCAST MEDIA

            AT WTHR, 1000 NORTH MERIDIAN STREET.

&&

BHH

Special weather statement, Aug 8, 6:23 PM EDT, 1 hour 3 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
623 PM EDT Thu Aug 8 2019

INZ055>057-064-065-082330-
Rush IN-Johnson IN-Decatur IN-Bartholomew IN-Shelby IN-
623 PM EDT Thu Aug 8 2019

...SIGNIFICANT WEATHER ADVISORY FOR SHELBY...SOUTHWESTERN RUSH...
NORTHWESTERN DECATUR...NORTHEASTERN JOHNSON AND NORTHEASTERN
BARTHOLOMEW COUNTIES UNTIL 730 PM EDT...

At 623 PM EDT, trained weather spotters reported a strong
thunderstorm 8 miles east of Greenwood, or 11 miles northwest of
Shelbyville, moving southeast at 30 mph.

Pea size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Shelbyville, Greenwood, Adams, Hope, Flat Rock, Milford, Geneva, St.
Paul, Hartsville, Fairland, Burney, Waldron, Moscow, Boggstown,
Marietta and Sandusky.

LAT...LON 3921 8571 3961 8610 3964 8606 3964 8595
      3970 8595 3970 8586 3944 8543
TIME...MOT...LOC 2223Z 315DEG 27KT 3963 8595

NIELD

Local storm report, Aug 8, 6:44 PM EDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
644 PM EDT THU AUG 8 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0616 PM     HAIL             4 E SOUTHPORT           39.65N 86.04W
08/08/2019  M0.25 INCH       MARION             IN   PUBLIC

&&

Local storm report, Aug 8, 7:10 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
710 PM EDT THU AUG 8 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0702 PM     HAIL             2 ESE WARREN PARK       39.77N 86.01W
08/08/2019  E0.25 INCH       MARION             IN   TRAINED SPOTTER

            THREE TO FOUR INCHES OF RAIN WATER ON THE
            STREETS.

&&

BHH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 5:14 PM EDT	Special Weather Statement	IND	Marion	61 min
Aug 8, 5:46 PM EDT	Special Weather Statement	IND	Boone	59 min
Aug 8, 6:10 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Montgomery, Putnam	50 min
Aug 8, 6:23 PM EDT	Special Weather Statement	IND	Shelby	67 min
Aug 8, 7:50 PM EDT	Special Weather Statement	IND	Decatur	40 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2019 Every severe thunderstorm warning in 2019

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.