Alert archive / Indiana / Special Weather Statements in 2019

Special Weather Statement, NWS Indianapolis, IN

July 21, 2019Jennings County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 21, 2019, 9:37 PM EDT for Jennings County, Indiana. It was in force for 38 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 21, 2019, 9:37 PM EDT (01:37 UTC)
Expired: Jul 21, 2019, 10:15 PM EDT
In force: 38 min
Issued by: NWS Indianapolis, IN

County Jennings County, IN

The radar

The Louisville radar (KLVX), 104 km from the middle of the area, began a volume at 01:40 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 00:00Z, 1.6 hours before the alert went out and 170 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: 1265 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1040 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 21, 6:37 PM EDT, 3 hours earlier.

Area forecast discussion, Jul 21, 6:37 PM EDT, 3 hours before

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Hazardous weather outlook, Jul 21, 3:35 AM EDT, 18 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Indianapolis IN
335 AM EDT Sun Jul 21 2019

INZ021-028>031-035>049-051>057-060>065-067>072-221000-
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-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
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, Greensburg, Vincennes, Washington,
Loogootee, Shoals, Bedford, Mitchell, Seymour, Brownstown,
and North Vernon
335 AM EDT Sun Jul 21 2019

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Outlook: Hot and humid conditions will persist this afternoon.
A few strong or isolated severe storms are possible. Damaging
winds will be the main severe threat.

Hazards: Heat index values to around 105. Damaging winds,
lightning, brief heavy rain.

Timing: The heat through this afternoon. Storm related through
tonight. Damaging winds mainly this afternoon and evening.

Discussion: A cold front will interact with the hot, humid and
unstable atmosphere and trigger strong to isolated severe
thunderstorms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Outlook: A few thunderstorms will linger on Monday into Monday
evening. Lightning, gusty winds, and brief heavy rain are possible.

Discussion: A cold front will move south of the area as Canadian
high pressure builds in in its wake. This will result in much
cooler weather and lower humidity next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible this afternoon and 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, Jul 21, 5:06 PM EDT, 4 hours 31 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
506 PM EDT Sun Jul 21 2019

INZ030-031-037>040-045>047-212145-
Howard IN-Clinton IN-Tipton IN-Putnam IN-Hendricks IN-Madison IN-
Boone IN-Hamilton IN-Marion IN-
506 PM EDT Sun Jul 21 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MADISON...SOUTHEASTERN
CLINTON...HOWARD...HENDRICKS...NORTHERN MARION...BOONE...HAMILTON...
TIPTON AND NORTHEASTERN PUTNAM COUNTIES UNTIL 545 PM EDT...

At 504 PM EDT, Doppler radar was tracking an outflow boundary along
a line extending from near Grissom Afb to 9 miles southwest of
Kokomo to Lebanon to 13 miles south of Crawfordsville. Movement was
east at 40 mph.

Wind gusts up to 50 to 55 mph will be possible with this outflow
boundary...which will occur well before any rain or thunderstorms.
The outflow boundary could reach the northwest portions of the
Indianapolis metro area by 530 to 540 pm.

Locations impacted include...
Indianapolis, Anderson, Kokomo, Carmel, Fishers, Noblesville,
Lawrence, Plainfield, Brownsburg, Lebanon, Zionsville, Speedway,
Danville, Elwood, Alexandria, Tipton, Windfall, Westfield, Avon and
Cicero.

LAT...LON 4036 8585 4037 8558 4030 8558 4003 8577
      3969 8633 3981 8695 3987 8685 3987 8669
      3995 8669 4003 8654 4033 8630 4055 8624
      4056 8586
TIME...MOT...LOC 2104Z 269DEG 33KT 4061 8615 4035 8623 4004 8650 3986
8692

Ryan

Special weather statement, Jul 21, 5:13 PM EDT, 4 hours 24 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
513 PM EDT Sun Jul 21 2019

INZ051-052-212200-
Clay IN-Vigo IN-
513 PM EDT Sun Jul 21 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL VIGO AND NORTHWESTERN
CLAY COUNTIES UNTIL 600 PM EDT...

At 512 PM EDT, Doppler radar was tracking a strong thunderstorm near
Terre Haute, moving east at 20 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Terre Haute, Brazil, West Terre Haute, Prairieton, Seelyville,
Staunton, Center Point, Riley, Cory, Saline City, Pimento and Indiana
State University.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3949 8753 3952 8703 3934 8705 3929 8705
      3930 8752
TIME...MOT...LOC 2112Z 267DEG 17KT 3941 8745

Ryan

Special weather statement, Jul 21, 6:14 PM EDT, 3 hours 23 minutes before

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Special weather statement, Jul 21, 6:23 PM EDT, 3 hours 14 minutes before

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Special weather statement, Jul 21, 6:30 PM EDT, 3 hours 7 minutes before

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Special weather statement, Jul 21, 7:02 PM EDT, 2 hours 35 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 9:19 PM EDT	Areal Flood Advisory	IND	Jennings	116 min

Nearby

Special Weather Statements in Indiana, 2019 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.