Alert archive / Indiana / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 63, NWS Indianapolis, IN

April 26, 20174 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 26, 2017, 7:25 PM EDT for 4 counties in Indiana. It was in force for 35 min. 1 report 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: Apr 26, 2017, 7:25 PM EDT (23:25 UTC)
Expired: Apr 26, 2017, 8:00 PM EDT
In force: 35 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Boone County, IN, Hamilton County, IN, Hendricks County, IN, Marion County, IN

The radar

The Indianapolis radar (KIND), 36 km from the middle of the area, began a volume at 23:29 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
Apr 26, 7:59 PM EDT	HAIL 1	Arcadia, IN

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
Apr 26, 5:58 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.4 hours before the alert went out and 205 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: 1088 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

405 
WUUS53 KIND 262325
SVRIND
INC011-057-063-097-270000-
/O.NEW.KIND.SV.W.0063.170426T2325Z-170427T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
725 PM EDT WED APR 26 2017

The National Weather Service in Indianapolis has issued a

* Severe Thunderstorm Warning for...
  Northeastern Hendricks County in central Indiana...
  Northern Marion County in central Indiana...
  Southeastern Boone County in central Indiana...
  Hamilton County in central Indiana...

* Until 800 PM EDT.

* At 725 PM EDT, a severe thunderstorm was located over Brownsburg,
  or 16 miles west of Indianapolis, moving northeast at 50 mph.

  HAZARD...70 mph wind gusts and quarter size hail. 

  SOURCE...Trained weather spotters. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Locations impacted include...
  Indianapolis, Carmel, Fishers, Noblesville, Lawrence, Brownsburg,
  Lebanon, Zionsville, Speedway, Danville, Westfield, Avon, Cicero,
  Fortville, Pittsboro, Whitestown, Sheridan, Arcadia, Meridian Hills
  and Clermont.

This includes the following highways...
 Interstate 65 between mile markers 118 and 141.
 Interstate 69 between mile markers 200 and 213.
 Interstate 74 between mile markers 53 and 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 4002 8586 3993 8586 3993 8594 3991 8594
      3972 8647 3999 8665 4022 8613 4022 8600
TIME...MOT...LOC 2325Z 235DEG 42KT 3987 8643 

HAIL...1.00IN
WIND...70MPH
 
$$

CP

1 follow-up statement

320 
WWUS53 KIND 262342
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
742 PM EDT WED APR 26 2017

INC063-262352-
/O.CAN.KIND.SV.W.0063.000000T0000Z-170427T0000Z/
Hendricks IN-
742 PM EDT WED APR 26 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HENDRICKS COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until midnight EDT for
central Indiana.

LAT...LON 4002 8586 3993 8586 3993 8594 3991 8594
      3986 8630 3989 8633 3992 8633 3992 8636
      4006 8649 4022 8613 4022 8600
TIME...MOT...LOC 2342Z 235DEG 42KT 3998 8622 

$$

INC011-057-097-270000-
/O.CON.KIND.SV.W.0063.000000T0000Z-170427T0000Z/
Marion IN-Boone IN-Hamilton IN-
742 PM EDT WED APR 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHERN MARION...SOUTHEASTERN BOONE AND HAMILTON COUNTIES...

At 742 PM EDT, a severe thunderstorm was located near Zionsville, or
14 miles north of Indianapolis, moving northeast at 50 mph.

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

SOURCE...Radar indicated. 

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

Locations impacted include...
Indianapolis, Carmel, Fishers, Noblesville, Lawrence, Lebanon,
Zionsville, Westfield, Cicero, Fortville, Whitestown, Sheridan,
Arcadia, Meridian Hills, Atlanta, Williams Creek, Ulen, Geist
Reservoir, Castleton and Morse Reservoir.

This includes the following highways...
 Interstate 65 between mile markers 123 and 138.
 Interstate 69 between mile markers 200 and 213.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 4002 8586 3993 8586 3993 8594 3991 8594
      3986 8630 3989 8633 3992 8633 3992 8636
      4006 8649 4022 8613 4022 8600
TIME...MOT...LOC 2342Z 235DEG 42KT 3998 8622 

HAIL...0.75IN
WIND...60MPH
 
$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 5:25 PM EDT	Special Weather Statement	IND	Vigo	35 min
Apr 26, 5:31 PM EDT	Special Weather Statement	IND	Hendricks	44 min
Apr 26, 5:46 PM EDT	Severe Thunderstorm Warning	IND	Clay, Parke, Vigo	29 min
Apr 26, 5:55 PM EDT	Severe Thunderstorm Warning	IND	Parke, Sullivan, Vermillion, Vigo	35 min
Apr 26, 6:24 PM EDT	Severe Thunderstorm Warning	IND	Clay, Owen, Parke, Putnam, Vermillion, Vigo	36 min
Apr 26, 6:45 PM EDT	Tornado Warning	IND	Morgan, Owen, Putnam	20 min
Apr 26, 6:53 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Montgomery	37 min
Apr 26, 6:59 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Putnam	31 min
Apr 26, 7:18 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Howard, Tipton	42 min
Apr 26, 7:49 PM EDT	Severe Thunderstorm Warning	IND	Howard, Tipton	26 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2017 Every severe thunderstorm warning 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.