Severe Thunderstorm Warning 69, NWS Indianapolis, IN

231 
WWUS53 KIND 291137
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
737 AM EDT Thu Jun 29 2023

INC027-083-291200-
/O.CON.KIND.SV.W.0069.000000T0000Z-230629T1200Z/
Knox IN-Daviess IN-
737 AM EDT Thu Jun 29 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 AM EDT
FOR KNOX AND NORTHWESTERN DAVIESS COUNTIES...

At 737 AM EDT, a severe thunderstorm was located near Vincennes,
moving east at 40 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
  Monroe City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3859 8764 3859 8761 3864 8762 3867 8759
      3868 8753 3874 8750 3877 8751 3878 8749
      3886 8755 3890 8754 3890 8750 3885 8716
      3854 8723 3853 8726 3851 8731 3854 8735
      3852 8736 3854 8740 3852 8747 3854 8767
TIME...MOT...LOC 1137Z 289DEG 37KT 3859 8750 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Puma

732 
WWUS53 KIND 291200
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
800 AM EDT Thu Jun 29 2023

INC027-083-291210-
/O.EXP.KIND.SV.W.0069.000000T0000Z-230629T1200Z/
Knox IN-Daviess IN-
800 AM EDT Thu Jun 29 2023

...THE SEVERE THUNDERSTORM WARNING FOR KNOX AND NORTHWESTERN DAVIESS
COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However small
hail and heavy rain are still possible with this thunderstorm.

LAT...LON 3859 8764 3859 8761 3864 8762 3867 8759
      3868 8753 3874 8750 3877 8751 3878 8749
      3886 8755 3890 8754 3890 8750 3885 8716
      3854 8723 3853 8726 3851 8731 3854 8735
      3852 8736 3854 8740 3852 8747 3854 8767
TIME...MOT...LOC 1200Z 290DEG 22KT 3856 8739 

$$

Puma

Area Forecast Discussion
National Weather Service Indianapolis IN
703 AM EDT Thu Jun 29 2023

...Updated Aviation Discussion...

.Short Term...(Today and tonight)
Issued at 257 AM EDT Thu Jun 29 2023

Current observations across central Indiana continue to show reduced
visibilities around 2-4 miles due to wildfire smoke. Some
improvements have been noted across far southern portions of the
area where visibilities are up to 4-6 miles. Visibilities should
continue to improve toward sunrise and later today as increasing
southerly flow pushes the smoke further north.

A complicated active weather pattern is expected through the period.
Models show impressive low level theta-e advection occurring by
daybreak which should result in strong elevated instability. This
along with isentropic ascent and a LLJ will lead to a large complex
of storms developing across IL. Confidence is low on exactly where
this complex of storms will initiate as CAMs show a wide range of
solutions. Latest HREF suggest CI is most likely across central IL
where the strongest forcing is expected. Mean cloud-bearing wind and
the theta-e gradient oriented NW-SE generally suggest southeastward
forward propagation. This would likely keep the most intense
convection and heaviest rainfall amounts across southwest portions
of central Indiana. Areas further north and east may be limited by a
sharp instability gradient which could struggle to move further NE
due to significant convective overturning. Some guidance suggest
strong low-level theta-e advection will be enough to overcome this.

While CAMs show varying potential scenarios in convective evolution,
most suggest multiple rounds of southeastward moving storm clusters
are likely through the period as strong mid-level flow spreads into
the region atop a very warm-moist unstable airmass. Our greatest
concern in this active pattern will be heavy rainfall amounts and
flash flooding from repeated rounds of storms and damaging wind
gusts. Large hail and a couple of tornadoes will also be
possible, mainly across southwest portions of central Indiana.

&&

.Long Term...(Friday through Wednesday)
Issued at 257 AM EDT Thu Jun 29 2023

- Periodic unsettled weather expected this weekend

Friday through Sunday night...

There is high confidence that anti-cyclonic flow overtop a dome of
high pressure, across the Gulf states, combined with a warm, very
humid and unstable airmass will result periodic thunderstorms with
potential for severe weather along with heavy rain and at least
localized flooding this weekend. Nocturnal low level jet and
CAPE/thetae gradient supports nighttime upstream MCS activity that
will track southeast across central Indiana. In addition,
mixed CAPEs to 3000 J/KG or higher at times, PWATs to 2 inches and 0-
6km shear to 40+ knots at times due to a 50+ knot mid level jet,
will bring the risk for severe thunderstorms and heavy rain
producers. All this said, confidence in timing is low. Models and
CAMs are in good agreement that Friday will start off with scattered
to widespread lingering convection from previous night's MCS. Then,
general expect a relative lull before another convective complex
develops upstream and moves across during the night Friday night.
Look for a similar situation Saturday night before the
synoptic pattern changes as a northern Plains trough eventually
moves through central Indiana Sunday night into Monday. Needless to
say, with a wavy front nearby and continued humid and unstable
atmosphere, more storms will roll through each day increasing the
chances of at least localized flooding.

Depending on how widespread and prolonged cloud cover is, southwest
sections could see lower to mid 90s temperatures Friday and Saturday
afternoon to go with upper 60s to lower 70s dew points. That would
translate to 100+ heat indices and potentially heat headlines.

Monday through Wednesday...

Less confidence in thunderstorm chances next week as broad high
pressure over the area along with weak pressure gradient suggests
any activity will be less organized. With that in mind, think there
will be enough sunshine to support very warm temperatures in the
lower 90s over southwestern sections at least.

&&

.Aviation...(12Z TAF Issuance)
Issued at 702 AM EDT Thu Jun 29 2023

Impacts:

- IFR to MVFR visibility in smoke and haze through 17Z

- Multiple rounds of thunderstorms expected

- MVFR or worse conditions possible in convection

Discussion:

Wildfire smoke will continue to result in MVFR flying conditions
through mid morning, but should begin to clear out thereafter as
thunderstorms move through. Multiple rounds of thunderstorms are
expected through this evening. There is some uncertainty in
convective timing, but used VCTS where confidence is highest for
thunderstorm chances. MVFR or worse conditions will be possible in
any thunderstorm.

Winds will shift to southerly by mid morning and could be gusty at
times, especially in thunderstorms. Gusts will likely remain
sporadic and did not mention in the TAFs as a result.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&

Short Term...Melo
Long Term...MK
Aviation...Melo

Hazardous Weather Outlook
National Weather Service Indianapolis IN
406 AM EDT Thu Jun 29 2023

INZ028-029-035>037-043>047-051>056-060>064-067>072-300815-
Warren-Tippecanoe-Fountain-Montgomery-Boone-Vermillion-Parke-Putnam-
Hendricks-Marion-Vigo-Clay-Owen-Morgan-Johnson-Shelby-Sullivan-
Greene-Monroe-Brown-Bartholomew-Knox-Daviess-Martin-Lawrence-Jackson-
Jennings-
Including the cities of Williamsport, West Lebanon, Lafayette,
West Lafayette, Attica, Covington, Veedersburg, Crawfordsville,
Lebanon, Zionsville, Clinton, Fairview Park, Rockville, Montezuma,
Rosedale, Greencastle, Plainfield, Brownsburg, Danville,
Indianapolis, Terre Haute, Brazil, Spencer, Gosport, Martinsville,
Mooresville, Greenwood, Franklin, Shelbyville, Sullivan, Carlisle,
Shelburn, Farmersburg, Linton, Bloomfield, Jasonville, Worthington,
Bloomington, Nashville, Columbus, Vincennes, Washington, Loogootee,
Shoals, Bedford, Mitchell, Seymour, and North Vernon
406 AM EDT Thu Jun 29 2023

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Multiple rounds of thunderstorms are expected through tonight with
the potential for severe weather. Damaging wind gusts, large hail,
and a few tornadoes are possible. Repeated rounds of thunderstorms
may result in flash flooding.

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

Thunderstorms will be possible at times Friday onward. Severe
thunderstorms are possible Friday through Saturday night. Damaging
winds and large hail are the primary threat, but isolated tornadoes
cannot be ruled out. Flooding will also be possible with repeated
rounds of storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed today and possibly through
Saturday.

&&

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

INZ021-030-031-038>042-048-049-057-065-300815-
Carroll-Clinton-Howard-Tipton-Hamilton-Madison-Delaware-Randolph-
Hancock-Henry-Rush-Decatur-
Including the cities of Delphi, Flora, Frankfort, Kokomo, Tipton,
Fishers, Carmel, Noblesville, Anderson, Muncie, Winchester,
Union City, Farmland, Parker City, Greenfield, New Castle,
Rushville, and Greensburg
406 AM EDT Thu Jun 29 2023

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Scattered thunderstorms are expected at times through tonight. A few
storms may be strong to severe with the potential for isolated
damaging wind gusts and large hail.

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

Thunderstorms will be possible at times Friday onward. Severe
thunderstorms are possible Friday through Saturday night. Damaging
winds and large hail are the primary threat, but isolated tornadoes
cannot be ruled out. Flooding will also be possible with repeated
rounds of storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today through Saturday.

&&

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

Special Weather Statement
National Weather Service Indianapolis IN
544 AM EDT Thu Jun 29 2023

INZ051-291015-
Vigo IN-
544 AM EDT Thu Jun 29 2023

...A strong thunderstorm will impact portions of Vigo County through
615 AM EDT...

At 544 AM EDT, Doppler radar was tracking a strong thunderstorm over
Oliver, or 7 miles north of Marshall, moving east at 25 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
  Terre Haute.

This includes Interstate 70 between mile markers 1 and 16.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3959 8753 3957 8724 3928 8725 3935 8753
TIME...MOT...LOC 0944Z 282DEG 21KT 3950 8766

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

MK

Preliminary Local Storm Report
National Weather Service Indianapolis IN
624 AM EDT Thu Jun 29 2023

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

0619 AM     Hail             1 NNE North Terre Haute 39.55N 87.35W
06/29/2023  E1.00 inch       Vigo               IN   Public

            Report from mPING: Quarter (1.00 in.).

&&

ELB

Special Weather Statement
National Weather Service Indianapolis IN
626 AM EDT Thu Jun 29 2023

INZ051-052-291100-
Clay IN-Vigo IN-
626 AM EDT Thu Jun 29 2023

...A strong thunderstorm will impact portions of southern Vigo and
southwestern Clay Counties through 700 AM EDT...

At 626 AM EDT, Doppler radar was tracking a strong thunderstorm 8
miles southwest of Terre Haute, moving east at 55 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This strong thunderstorm will be near...
  Terre Haute around 635 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3934 8758 3934 8756 3935 8754 3935 8753
      3944 8753 3938 8704 3934 8705 3925 8706
      3928 8761 3929 8760 3930 8760 3930 8762
TIME...MOT...LOC 1026Z 270DEG 48KT 3937 8747

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

MK

Special Weather Statement
National Weather Service Indianapolis IN
655 AM EDT Thu Jun 29 2023

INZ060-061-067-068-291130-
Daviess IN-Knox IN-Greene IN-Sullivan IN-
655 AM EDT Thu Jun 29 2023

...A strong thunderstorm will impact portions of southern Sullivan,
northeastern Knox, western Greene and north central Daviess Counties
through 730 AM EDT...

At 655 AM EDT, Doppler radar was tracking a strong thunderstorm over
Palestine, or 7 miles east of Robinson, moving east at 40 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

This strong thunderstorm will be near...
  Sullivan around 710 AM EDT.

Other locations in the path of this storm include Linton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3914 8705 3887 8706 3891 8753 3893 8752
      3894 8752 3896 8751 3897 8753 3899 8758
      3899 8756 3900 8758 3903 8757 3904 8758
      3906 8757 3908 8760 3909 8762 3910 8761
      3910 8763
TIME...MOT...LOC 1055Z 273DEG 33KT 3900 8761

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

MK