Alert archive / Indiana / Tornado Warnings in 2017

Tornado Warning 27, NWS Louisville, KY

May 20, 2017Jefferson County, Indiana

NWS Louisville, KY issued this tornado warning at May 20, 2017, 7:09 PM EDT for Jefferson County, Indiana. It was in force for 21 min. 5 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: May 20, 2017, 7:09 PM EDT (23:09 UTC)
Expired: May 20, 2017, 7:30 PM EDT
In force: 21 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Jefferson County, IN

The radar

The Louisville radar (KLVX), 107 km from the middle of the area, began a volume at 23:12 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
May 20, 7:09 PM EDT	TSTM WND DMG	1 Ese Wirt, IN	TREES AND POWER LINES DOWN ON SR 7 NEAR DAWSON SMITH ROAD.
May 20, 7:10 PM EDT	TORNADO	1 Ese Wirt, IN	TREES FELLED...CAMPER DESTROYED...SIDING REMOVED FROM HOMES.
May 20, 7:11 PM EDT	TSTM WND DMG	1 Wnw North Madison, IN	DAMAGE TO THE AWNING OVER A FUEL STATION.
May 20, 7:12 PM EDT	TSTM WND DMG	1 Ne North Madison, IN	ROOF DAMAGE TO A BOWLING ALLEY.
May 20, 7:12 PM EDT	TSTM WND DMG	1 Ne North Madison, IN	ROOF DAMAGE TO A CONSIGNMENT SHOP.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 20, 4:23 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.2 hours before the alert went out and 150 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

306 
WFUS53 KLMK 202309
TORLMK
INC077-202330-
/O.NEW.KLMK.TO.W.0027.170520T2309Z-170520T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Louisville KY
709 PM EDT SAT MAY 20 2017

The National Weather Service in Louisville has issued a

* Tornado Warning for...
  Northeastern Jefferson County in south central Indiana...

* Until 730 PM EDT
    
* At 709 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Madison, moving northeast at 30 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Madison, Smyrna, Middlefork, Canaan, North Madison, Ringwald,
  China, Belleview, Bryantsburg and Wirt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3886 8520 3873 8538 3874 8542 3873 8544
      3877 8552 3891 8546 3891 8520
TIME...MOT...LOC 2309Z 211DEG 24KT 3877 8543 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SCHOETTMER

2 follow-up statements

490 
WWUS53 KLMK 202319
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
719 PM EDT SAT MAY 20 2017

INC077-202330-
/O.CON.KLMK.TO.W.0027.000000T0000Z-170520T2330Z/
Jefferson IN-
719 PM EDT SAT MAY 20 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
NORTHEASTERN JEFFERSON COUNTY...
    
At 718 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Madison, moving northeast at 30 mph.

HAZARD...Tornado and quarter size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Middlefork, Canaan, China, Belleview, Bryantsburg, Wirt and
Barbersville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 3878 8531 3879 8539 3882 8549 3891 8546
      3891 8520 3886 8520
TIME...MOT...LOC 2318Z 211DEG 24KT 3883 8539 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SCHOETTMER

463 
WWUS53 KLMK 202333
SVSLMK

Severe Weather Statement
National Weather Service Louisville KY
733 PM EDT SAT MAY 20 2017

INC077-202343-
/O.EXP.KLMK.TO.W.0027.000000T0000Z-170520T2330Z/
Jefferson IN-
733 PM EDT SAT MAY 20 2017

...THE TORNADO WARNING FOR NORTHEASTERN JEFFERSON COUNTY HAS
EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 1100 PM EDT for
south central Indiana.

Report severe weather to local law enforcement, post your report to
the National Weather Service Louisville Facebook page, or tweet your
report using hashtag L, M, K, spotter.

LAT...LON 3878 8531 3879 8539 3882 8549 3891 8546
      3891 8520 3886 8520
TIME...MOT...LOC 2333Z 211DEG 24KT 3890 8533 

$$

SCHOETTMER

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 9:57 PM EDT	River Flood Warning	LMK	Harrison, Washington	25 hr
May 19, 11:02 PM EDT	Areal Flood Warning	LMK	Washington	12 hr
May 20, 3:17 AM EDT	Special Weather Statement	LMK	Perry	28 min
May 20, 9:33 AM EDT	Special Weather Statement	LMK	Dubois	27 min
May 20, 2:54 PM EDT	Special Weather Statement	LMK	Dubois	36 min
May 20, 3:53 PM EDT	Special Weather Statement	LMK	Perry	37 min
May 20, 4:16 PM EDT	Special Weather Statement	LMK	Crawford	29 min
May 20, 4:24 PM EDT	Severe Thunderstorm Warning	LMK	Perry	36 min
May 20, 4:32 PM EDT	Special Weather Statement	LMK	Perry	28 min
May 20, 4:43 PM EDT	Tornado Warning	LMK	Crawford, Perry	17 min
May 20, 4:58 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison	32 min
May 20, 5:11 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Harrison	22 min
May 20, 5:24 PM EDT	Special Weather Statement	LMK	Harrison	36 min
May 20, 5:28 PM EDT	Severe Thunderstorm Warning	LMK	Crawford, Floyd, Harrison, Washington	32 min
May 20, 6:01 PM EDT	Special Weather Statement	LMK	Clark, Floyd	29 min
May 20, 6:08 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Floyd	37 min
May 20, 6:16 PM EDT	Special Weather Statement	LMK	Scott	29 min
May 20, 6:33 PM EDT	Severe Thunderstorm Warning	LMK	Clark	16 min
May 20, 6:55 PM EDT	Special Weather Statement	LMK	Jefferson	35 min
May 20, 7:05 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	25 min

Nearby

Tornado Warnings in Indiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.