Alert archive / Indiana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 63, NWS Indianapolis, IN

July 20, 2018Delaware County, Randolph County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 20, 2018, 4:29 PM EDT for Delaware County, Randolph County, Indiana. It was in force for 31 min. 4 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: Jul 20, 2018, 4:29 PM EDT (20:29 UTC)
Expired: Jul 20, 2018, 5:00 PM EDT
In force: 31 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Delaware County, IN, Randolph County, IN

The radar

The Indianapolis radar (KIND), 105 km from the middle of the area, began a volume at 20:27 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
Jul 20, 4:34 PM EDT	HAIL 0.75	1 Nw Ball State Univers, IN	PEA TO DIME-SIZE HAIL.
Jul 20, 4:35 PM EDT	HAIL 0.25	1 Nnw Muncie, IN	CORRECTS PREVIOUS HAIL REPORT FROM 1 NNW MUNCIE.
Jul 20, 4:35 PM EDT	HAIL 0.25	1 Nnw Muncie, IN
Jul 20, 4:35 PM EDT	HAIL 0.25	2 N Muncie, IN

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 286 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: 265 J/kg
Mixed-layer CIN: -249 J/kg
Mixed-layer LCL: 1579 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 343 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

327 
WUUS53 KIND 202029
SVRIND
INC035-135-202100-
/O.NEW.KIND.SV.W.0063.180720T2029Z-180720T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
429 PM EDT FRI JUL 20 2018

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Northern Randolph County in east central Indiana...
  Southeastern Delaware County in east central Indiana...

* Until 500 PM EDT.

* At 429 PM EDT, a severe thunderstorm was located over Muncie,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Muncie, Yorktown, Albany, Parker City, Farmland, Selma, Ridgeville,
  Saratoga and Ball State University.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4011 8542 4012 8544 4018 8549 4031 8523
      4031 8480 4024 8481
TIME...MOT...LOC 2029Z 252DEG 27KT 4016 8540 

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

MK

2 follow-up statements

783 
WWUS53 KIND 202048
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
448 PM EDT FRI JUL 20 2018

INC035-135-202100-
/O.CON.KIND.SV.W.0063.000000T0000Z-180720T2100Z/
Randolph IN-Delaware IN-
448 PM EDT FRI JUL 20 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHERN RANDOLPH AND SOUTHEASTERN DELAWARE COUNTIES...

At 448 PM EDT, a severe thunderstorm was located near Albany, or 9
miles east of Muncie, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Muncie, Yorktown, Albany, Parker City, Farmland, Selma, Ridgeville,
Saratoga and Ball State University.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4011 8542 4012 8544 4018 8549 4031 8523
      4031 8480 4024 8481
TIME...MOT...LOC 2048Z 249DEG 27KT 4023 8522 

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

TDUD

854 
WWUS53 KIND 202100
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
500 PM EDT FRI JUL 20 2018

INC035-135-202110-
/O.EXP.KIND.SV.W.0063.000000T0000Z-180720T2100Z/
Randolph IN-Delaware IN-
500 PM EDT FRI JUL 20 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN RANDOLPH AND
SOUTHEASTERN DELAWARE COUNTIES HAS EXPIRED...
    
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been allowed to expire.

LAT...LON 4011 8542 4012 8544 4018 8549 4031 8523
      4031 8480 4024 8481
TIME...MOT...LOC 2100Z 252DEG 27KT 4025 8512 

$$

TDUD

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 Jul 20, 3:03 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jul 20, 3:03 PM EDT, 1 hour 26 minutes before

Area Forecast Discussion
National Weather Service Indianapolis IN
303 PM EDT Fri Jul 20 2018

.UPDATE...
The LONG TERM Section has been updated below.

&&

.SYNOPSIS...
Issued at 351 AM EDT Fri Jul 20 2018

A unseasonably strong low pressure system moving through the
Great Lakes and into the Ohio Valley will bring showers and
thunderstorms to central Indiana for the weekend, as well as the
potential for severe storms today. After today temperatures will
drop to below normal for the remainder of the weekend before
returning to normal for the work week. Next week looks mainly dry
after Monday.

&&

.NEAR TERM /This afternoon/...
Issued at 1241 PM EDT Fri Jul 20 2018

Only made minor changes to PoPs, adding slight chance to the
southwestern counties. The new Day1 SPC Outlook has trimmed the
Enhanced risk. Terre Haute, Brazil, Crawfordsville and Lafayette
are now in a Slight Risk. Currently, strong storms are limited to
our far southeastern counties.

Previous discussion follows...

Issued at 955 AM EDT Fri Jul 20 2018

Surface analysis late this morning shows a deep low over southern
Wisconsin...with cyclonic flow across Central Indiana. Showers and
storms associated with a wave around the low was found across
Eastern Indiana and was pivoting northeast within the flow. GOES16
shows clearing skies across Illinois and Indiana...however dew
points remain quite highs...in the 60s to lower 70s across
Illinois.

Forecast soundings across Central Indiana this afternoon show very
steep lapse rates favorable for convection with CAPE over 3000
J/KG. A dry mid level is also noted...favorable for the production
with damaging wind gusts within storms. HRRR suggests TSRA
development this afternoon as instability develops. Thus have kept
the next 1-2 hours mainly dry expect across the east...and then
trended toward higher pops this afternoon.

Given the expected sunshine...trended highs warmer than the
Forecast builder blends as has been the pattern the past several
days.

&&

.SHORT TERM /Saturday through Sunday night/...

Issued at 351 AM EDT Fri Jul 20 2018

An upper low will settle in over central Indiana and a surface low
will slowly traverse the area. Thus expect off and on showers for
Saturday along with temperatures staying in the 70s under mostly
cloudy skies. Precip chances will continue through the weekend as
lobes of energy move through the upper low. High confidence
temperatures will run below normal. High confidence of off and on
rain for Saturday, coverage may be less on Sunday.

&&

.LONG TERM /Monday Night through Friday/...

Issued at 303 PM EDT Fri Jul 20 2018

ECMWF shows weak ridging building aloft on Monday Night through
Wednesday as the upper low over the deep south weakens slowly.
This should result in dry weather with seasonable temperatures for
the middle of the work week. By Thursday and Friday...the upper
flow becomes nor northwesterly...however forcing dynamics appear
quite limited. Thus have trended again toward a dry forecast for
now until a stronger forcing signal is seen. Given the NW flow at
that time Highs may be slightly cooler than seasonal normals.

&&

.AVIATION /Discussion for the 201800Z Tafs/...

Issued at 1249 PM EDT Fri Jul 20 2018

VFR CConditionsarea expected this afternoon during the taf
period...however scattered thunderstorms across the area may
produce brief MVFR to IFR conditions should they strike a taf
site. Confidence for specific timing is not high enough at this
time...however we will continue to use a period of VCSH to show
the ongoing threat.

Low Pressure over Wisconsin is expected to continue to dig
southeast toward Indiana tonight...bringing better chances for
MVFR Cigs on Saturday as that cloud shield invades.

&&

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

SYNOPSIS...CP
NEAR TERM...Puma/MK
SHORT TERM...CP
LONG TERM....Puma
AVIATION...JP

Hazardous weather outlook, Jul 20, 9:12 AM EDT, 7 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service Indianapolis IN
912 AM EDT Fri Jul 20 2018

INZ021-028>031-035>049-051>057-060>065-067>072-211315-
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 Lafayette, Frankfort, Kokomo,
Crawfordsville, Anderson, Muncie, Indianapolis, Terre Haute,
Shelbyville, Bloomington, Columbus, Vincennes, Bedford, and Seymour
912 AM EDT Fri Jul 20 2018

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Outlook: Severe storms are expected today.

Hazards: Large hail, damaging winds, tornadoes, localized flash
flooding and frequent lightning.

Timing: Thunderstorms are possible throughout the day, but the most
likely window for severe storms is from 1 to 10 pm.

Discussion: An unseasonably strong low pressure system will bring
thunderstorms, some severe, to central Indiana today and early
tonight. Hail larger than golf ball size is likely in some of these
storms, along with damaging winds and isolated tornadoes.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Outlook: Thunderstorms will be possible most times from Saturday
through Monday, but severe storms are not expected. There are also
small chances for storms off and on from Tuesday through Thursday,
but again none of these appear to have severe potential.

Discussion: A strong low pressure system moving through the Great
Lakes and Ohio Valley will keep chances for thunderstorms in the
forecast through Monday. After that surface fronts will bring small
off and on chances for thunderstorms through Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed this afternoon and evening.

&&

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

DRT

In the hours before

Local storm report, Jul 20, 2:23 PM EDT, 2 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
223 PM EDT FRI JUL 20 2018

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

0202 PM     HAIL             2 E SEYMOUR             38.96N 85.84W
07/20/2018  M1.00 INCH       JACKSON            IN   PUBLIC

            TIME ESTIMATED BY RADAR.

&&

KEH

Local storm report, Jul 20, 2:43 PM EDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
243 PM EDT FRI JUL 20 2018

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

0220 PM     HAIL             6 N CROTHERSVILLE       38.87N 85.82W
07/20/2018  E1.75 INCH       JACKSON            IN   AMATEUR RADIO

&&

KEH

Local storm report, Jul 20, 3:37 PM EDT, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
337 PM EDT FRI JUL 20 2018

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

0333 PM     HAIL             6 NNE CROTHERSVILLE     38.87N 85.82W
07/20/2018  M0.50 INCH       JACKSON            IN   TRAINED SPOTTER

&&

Local storm report, Jul 20, 3:41 PM EDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
341 PM EDT FRI JUL 20 2018

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

0315 PM     TSTM WND DMG     ALEXANDRIA              40.26N 85.68W
07/20/2018                   MADISON            IN   EMERGENCY MNGR

            TREE BLOWN DOWN ONTO HOUSE. TIME ESTIMATED
            FROM RADAR.

&&

BHH

Local storm report, Jul 20, 3:43 PM EDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
343 PM EDT FRI JUL 20 2018

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

0306 PM     TSTM WND DMG     1 SSE FRANKTON          40.21N 85.77W
07/20/2018                   MADISON            IN   EMERGENCY MNGR

            BROKEN UTILITY POLE. TIME ESTIMATED FROM
            RADAR.

&&

BHH

Local storm report, Jul 20, 4:13 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
413 PM EDT FRI JUL 20 2018

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

0411 PM     HAIL             CLIFFORD                39.28N 85.87W
07/20/2018  E0.25 INCH       BARTHOLOMEW        IN   PUBLIC

            COPIOUS PEA SIZE HAIL.

&&

BHH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 3:09 AM EDT	Special Weather Statement	IND	Vigo	36 min
Jul 20, 10:03 AM EDT	Special Weather Statement	IND	Delaware, Madison	42 min
Jul 20, 10:41 AM EDT	Special Weather Statement	IND	Delaware	49 min
Jul 20, 11:26 AM EDT	Special Weather Statement	IND	Randolph	49 min
Jul 20, 12:24 PM EDT	Special Weather Statement	IND	Bartholomew	51 min
Jul 20, 12:40 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	50 min
Jul 20, 1:27 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Jackson, Jennings	48 min
Jul 20, 1:37 PM EDT	Areal Flood Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	3 hr
Jul 20, 1:50 PM EDT	Severe Thunderstorm Warning	IND	Jackson, Jennings	40 min
Jul 20, 2:28 PM EDT	Severe Thunderstorm Warning	IND	Jennings	32 min
Jul 20, 4:54 PM EDT	Severe Thunderstorm Warning	IND	Jennings	36 min
Jul 20, 5:03 PM EDT	Severe Thunderstorm Warning	IND	Delaware	42 min
Jul 20, 6:08 PM EDT	Severe Thunderstorm Warning	IND	Jackson, Jennings	37 min
Jul 20, 6:55 PM EDT	Severe Thunderstorm Warning	IND	Jennings	35 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2018 Every 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.