Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 103, NWS Indianapolis, IN

May 10, 2011Henry County, Madison County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at May 10, 2011, 2:56 PM EDT for Henry County, Madison County, Indiana. It was in force for 18 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: May 10, 2011, 2:56 PM EDT (18:56 UTC)
Expired: May 10, 2011, 3:14 PM EDT
In force: 18 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Henry County, IN, Madison County, IN

The radar

The Indianapolis radar (KIND), 77 km from the middle of the area, began a volume at 18:58 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 10, 1:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.9 hours before the alert went out and 156 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: 9 J/kg
Mixed-layer CIN: -487 J/kg
Mixed-layer LCL: 1473 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 252 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

227 
WUUS53 KIND 101856
SVRIND
INC065-095-101930-
/O.NEW.KIND.SV.W.0103.110510T1856Z-110510T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
256 PM EDT TUE MAY 10 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENRY COUNTY IN EAST CENTRAL INDIANA...
  SOUTHEASTERN MADISON COUNTY IN CENTRAL INDIANA...

* UNTIL 330 PM EDT

* AT 253 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED
  NEAR ANDERSON...AND MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SULPHUR SPRINGS AROUND 315 PM EDT...
  MOUNT SUMMIT AND CADIZ AROUND 320 PM EDT...
  KENNARD AROUND 325 PM EDT...
  GREENSBORO...NEW CASTLE AND SPICELAND AROUND 330 PM EDT...

THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 26 AND 31.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 118 AND 123.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3995 8520 3981 8549 4008 8568 4009 8558
      4008 8558 4008 8550
TIME...MOT...LOC 1856Z 318DEG 20KT 4005 8560
WIND...HAIL <50MPH 1.00IN

$$

MRD/SMF

1 follow-up statement

941 
WWUS53 KIND 101914
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
314 PM EDT TUE MAY 10 2011

INC065-095-101924-
/O.CAN.KIND.SV.W.0103.000000T0000Z-110510T1930Z/
HENRY-MADISON-
314 PM EDT TUE MAY 10 2011

...THE SEVERE THUNDERSTORM WARNING FOR HENRY AND SOUTHEASTERN MADISON
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

LAT...LON 3995 8520 3981 8549 4008 8568 4009 8558
      4008 8558 4008 8550
TIME...MOT...LOC 1914Z 318DEG 20KT 3998 8551

$$

MRD/SMF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 1:05 PM EDT	Special Weather Statement	IND	Clinton	25 min
May 10, 1:10 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Montgomery, Tippecanoe	35 min
May 10, 1:42 PM EDT	Severe Thunderstorm Warning	IND	Hamilton, Hancock, Madison	33 min
May 10, 1:58 PM EDT	Severe Thunderstorm Warning	IND	Hamilton, Madison	32 min
May 10, 2:15 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Madison	45 min
May 10, 2:29 PM EDT	Tornado Warning	IND	Delaware, Madison	36 min
May 10, 2:36 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Madison	24 min
May 10, 2:53 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Randolph	52 min
May 10, 3:05 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Madison	40 min
May 10, 3:43 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Randolph	62 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2011 Every severe thunderstorm warning in 2011

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.