Alert archive / Indiana / Special Weather Statements in 2020

Special Weather Statement, NWS Indianapolis, IN

July 19, 2020Morgan County, Indiana

NWS Indianapolis, IN issued this special weather statement at Jul 19, 2020, 6:06 PM EDT for Morgan County, Indiana. It was in force for 24 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 19, 2020, 6:06 PM EDT (22:06 UTC)
Expired: Jul 19, 2020, 6:30 PM EDT
In force: 24 min
Issued by: NWS Indianapolis, IN

County Morgan County, IN

The radar

The Indianapolis radar (KIND), 45 km from the middle of the area, began a volume at 22:08 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

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 195 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: 930 J/kg
Mixed-layer CIN: -192 J/kg
Mixed-layer LCL: 1208 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 217 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 19, 4:26 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jul 19, 4:26 PM EDT, 1 hour 40 minutes before

Area Forecast Discussion
National Weather Service Indianapolis IN
426 PM EDT Sun Jul 19 2020

.UPDATE...
Aviation Section updated.

&&

.SYNOPSIS...
Issued at 354 PM EDT Sun Jul 19 2020

Showers and thunderstorms will be prevalent through most of the
forecast. Highest chances will be today, tonight, Tuesday and
Wednesday. Heat advisory remains for portions of south central
Indiana as heat indices have approached 105. Temperatures look to
cool back towards seasonal for the beginning the week.

&&

.NEAR TERM /Today and Tonight/...

Issued at 354 PM EDT Sun Jul 19 2020

Thunderstorms are currently developing along a boundary across
central Indiana. Heavy rain and wind gusts in excess of 60 mph is
the primary threat within these thunderstorms. Greatest threat for
severe weather looks to be north of central Indiana, where the LLJ
is strongest and oriented parallel to storm motion. As these
storms move south, convective development is expected to continue.
Southern portions of central Indiana have had less inhibited
diurnal warming, with slightly steeper surface lapse rates. The
boundary responsible for the primary lift is moving slowly and is
not expected to be south of the region until later tonight. With
this in mind, there remains a chance of showers and thunderstorms
through late this evening.

Threat of excessive heat is now more focused to the south where
highs will reach the low to mid 90s with dew points in the upper
70s. This translates to hear indices in the mid 100s. Overnight,
temperatures will cool as the boundary moves south of the region.
Expect overnight lows near 70.

&&

.SHORT TERM /Monday and Wednesday/...

Issued at 354 PM EDT Sun Jul 19 2020

The boundary looks to stall near the southern border of central
Indiana during the day tomorrow. North of this boundary, expect
milder tempertures and dew points. South of the boundary, cloud
cover and precipitation will cause localized areas of high
temperatures. Some locations may again be in the low 90s, but extent
will be limited.

Southwest motion will induce a moisture return on Tuesday. This will
provide thunderstorm chances in the afternoon and evening. There
will be a threat of severe weather on Tuesday. Large lapse rates in
the low and mid levels along with some mid level dry air will be
enough to provide a threat of severe wind gusts along organized
convective features. Isolated large hail also looks to be a
possibility. More large scale forcing associated with an upper
level trough approaching Indiana on Wednesday will provide another
chance for showers and thunderstorms. Models currently vary
greatly in timing, but there is moderate confidence in some
precipitation Wednesday afternoon and evening.

&&

.LONG TERM /Thursday through Sunday/...

Issued at 354 PM EDT Sun Jul 19 2020

As the upper level trough moves through Indiana on Thursday,
precipitation chances will gradually decrease. High pressure looks
to move in later in the week, and with it the return of above
seasonal temperatures. Central Indiana looks to be on the periphery
of greatest large scale subsidence, and therefor will be within a
region of chances of diurnal showers and thunderstorms.

&&

.AVIATION /Discussion for the 192100Z IND Taf Update/...

Radar trends show and area of TSRA expected to continue to impact
the IND Taf site over the next 3-5 hours. Given the gaps in the
radar echos will allow for a trend toward VCTS as convection
upstream should diminish upon approach given an already worked
over atmosphere.

Previous Discussion Below

/Discussion for 191800z TAF issuance/...

Issued at 1232 PM EDT Sun Jul 19 2020

A line of thunderstorms currently moving east across eastern
Illinois should stay north of all sites but KLAF, which could get
clipped by the southern edge of the line early in the TAF period.
Will include a tempo thunder group there. Elsewhere, more
convective development is expected later this afternoon/evening
along and ahead of a cold frontal boundary that will be moving
into central Indiana and then stalling to the south of the sites.
Low confidence in the timing/coverage of this convection as high
resolution models are showing a lot of variety in solutions.
Ultimately, think outside of any storms should see little impact
to flight category, with the exception of a few hours of possible
postfrontal MVFR ceilings. Will run with a VCTS for much of the
afternoon/evening and leave out more explicit thunder mention due
to low confidence.

Winds out of the southwest around 10 to 15 kts with gusts to
around 20 to 25 kts should continue through sunset, at which point
they should decrease. Also look for a direction change to
westerly/northwesterly moving through after 0z with the frontal
passage, then becoming light and variable late overnight and
lasting through Monday.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for INZ051>057-060>065-
067>072.

&&

SYNOPSIS...Updike
NEAR TERM...Updike
SHORT TERM...Updike
LONG TERM....Updike/CP
AVIATION...CP/JP

Hazardous weather outlook, Jul 19, 5:07 PM EDT, 59 minutes before

Hazardous Weather Outlook
National Weather Service Indianapolis IN
507 PM EDT Sun Jul 19 2020

INZ021-028>031-035>049-051>057-060>065-067>072-202115-
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
507 PM EDT Sun Jul 19 2020

This hazardous weather outlook is for central Indiana.

.DAY ONE...Tonight.

Outlook: Warm and humid. Thunderstorms are possible, and some could
be severe.

Hazards: Heat indices up to around 105 could lead to heat illnesses.
Damaging winds, hail, heavy rain, and lightning in thunderstorms.

Timing: Heat and severe thunderstorms into early evening. Other
thunderstorms are then possible into the overnight.

Discussion: A cold front will move into the area, bringing chances
for thunderstorms. Hot and humid conditions will continue today ahead
of the front.

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

Outlook: Hot and humid conditions can be expected along with chances
for thunderstorms.

Isolated severe thunderstorms are possible Tuesday.

Discussion: Hot and humid air will remain across central Indiana
into next week. A front remaining in the area will keep chances for
thunderstorms around.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any severe weather.

.STORM MOTION STATEMENT...

The expected storm motion this afternoon is from the west at around
30 MPH.

&&

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

Puma

In the hours before

Local storm report, Jul 19, 4:47 PM EDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
447 PM EDT SUN JUL 19 2020

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

0130 PM     TSTM WND DMG     5 ENE YEOMAN            40.69N 86.64W
07/19/2020                   CARROLL            IN   EMERGENCY MNGR

            TREES DOWN. TIME ESTD FROM RADAR.

&&

AGM

Local storm report, Jul 19, 4:48 PM EDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
448 PM EDT SUN JUL 19 2020

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

0130 PM     TSTM WND DMG     5 NW BURROWS            40.72N 86.59W
07/19/2020                   CARROLL            IN   EMERGENCY MNGR

            TREES DOWN. TIME ESTD FROM RADAR.

&&

AGM

Local storm report, Jul 19, 4:50 PM EDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
450 PM EDT SUN JUL 19 2020

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

0135 PM     TSTM WND DMG     3 NNE ROCKFIELD         40.68N 86.56W
07/19/2020                   CARROLL            IN   EMERGENCY MNGR

            TREES DOWN. TIME ESTD FROM RADAR.

&&

AGM

Special weather statement, Jul 19, 5:00 PM EDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
500 PM EDT Sun Jul 19 2020

INZ063-064-192130-
Brown IN-Bartholomew IN-
500 PM EDT Sun Jul 19 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BROWN AND
SOUTHWESTERN BARTHOLOMEW COUNTIES UNTIL 530 PM EDT...

At 459 PM EDT, Doppler radar was tracking a strong thunderstorm near
Nashville, or 11 miles west of Columbus, moving east at 30 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Columbus, Nashville, Stone Head, Gnaw Bone and Waymansville.

LAT...LON 3917 8627 3927 8622 3920 8594 3905 8603
TIME...MOT...LOC 2059Z 285DEG 27KT 3917 8612

KH

Local storm report, Jul 19, 6:02 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
602 PM EDT SUN JUL 19 2020

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

0435 PM     TSTM WND DMG     4 ENE COLUMBUS          39.23N 85.85W
07/19/2020                   BARTHOLOMEW        IN   TRAINED SPOTTER

            SEVERAL TREE BRANCHES DOWN, ONE CAUSING
            MINOR CAR DAMAGE.

&&

AGM

Special weather statement, Jul 19, 6:06 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Indianapolis IN
606 PM EDT Sun Jul 19 2020

INZ053-054-062-063-192230-
Owen IN-Brown IN-Morgan IN-Monroe IN-
606 PM EDT Sun Jul 19 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MONROE...SOUTHERN
MORGAN...NORTHWESTERN BROWN AND EAST CENTRAL OWEN COUNTIES UNTIL 630
PM EDT...

At 606 PM EDT, Doppler radar was tracking a strong thunderstorm near
Martinsville, or 15 miles north of Bloomington, moving east at 25
mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Martinsville, Gosport, Paragon, Stinesville, Centerton and
Mahalasville.

LAT...LON 3929 8670 3939 8674 3954 8639 3929 8626
TIME...MOT...LOC 2206Z 260DEG 20KT 3938 8645

KH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 1:25 PM EDT	Severe Thunderstorm Warning	IND	Carroll	35 min
Jul 19, 1:32 PM EDT	Special Weather Statement	IND	Fountain, Tippecanoe, Warren	43 min
Jul 19, 2:01 PM EDT	Special Weather Statement	IND	Boone, Clinton, Howard, Tipton	44 min
Jul 19, 2:52 PM EDT	Special Weather Statement	IND	Hamilton, Hancock, Madison	38 min
Jul 19, 3:15 PM EDT	Special Weather Statement	IND	Johnson, Marion	45 min
Jul 19, 3:51 PM EDT	Special Weather Statement	IND	Rush, Shelby	39 min
Jul 19, 4:02 PM EDT	Severe Thunderstorm Warning	IND	Rush	28 min
Jul 19, 4:12 PM EDT	Severe Thunderstorm Warning	IND	Brown, Johnson, Monroe, Morgan	33 min
Jul 19, 5:00 PM EDT	Special Weather Statement	IND	Brown	30 min
Jul 19, 6:10 PM EDT	Severe Thunderstorm Warning	IND	Clay, Owen, Putnam	35 min
Jul 19, 6:38 PM EDT	Special Weather Statement	IND	Morgan	37 min
Jul 19, 6:45 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Greene, Jackson, Lawrence, Monroe and 2 more	30 min
Jul 19, 7:42 PM EDT	Areal Flood Advisory	IND	Greene, Monroe, Morgan, Owen	3 hr
Jul 19, 7:58 PM EDT	Severe Thunderstorm Warning	IND	Lawrence	32 min

Nearby

Special Weather Statements in Indiana, 2020 Every special weather statement in 2020

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.