Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 265, NWS Indianapolis, IN

July 11, 2011Clinton County, Tipton County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 11, 2011, 8:32 PM EDT for Clinton County, Tipton County, Indiana. It was in force for 43 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: Jul 11, 2011, 8:32 PM EDT (00:32 UTC)
Expired: Jul 11, 2011, 9:15 PM EDT
In force: 43 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clinton County, IN, Tipton County, IN

The radar

The Indianapolis radar (KIND), 75 km from the middle of the area, began a volume at 00:34 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
Jul 11, 8:34 PM EDT	HAIL 1.75	4 Sse Rossville, IN	RELAYED BY CLINTON COUNTY SHERIFFS OFFICE.

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
Jul 11, 7:18 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 192 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: 4387 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1217 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

256 
WUUS53 KIND 120032
SVRIND
INC023-159-120115-
/O.NEW.KIND.SV.W.0265.110712T0032Z-110712T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
832 PM EDT MON JUL 11 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLINTON COUNTY IN CENTRAL INDIANA...
  WESTERN TIPTON COUNTY IN CENTRAL INDIANA...

* UNTIL 915 PM EDT

* AT 829 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  NORTHWEST OF FRANKFORT...AND MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MICHIGANTOWN AROUND 845 PM EDT...
  KEMPTON AROUND 905 PM EDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 159 AND 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4042 8631 4039 8631 4039 8628 4038 8628
      4038 8624 4040 8624 4040 8619 4022 8622
      4027 8669 4043 8667 4043 8651
TIME...MOT...LOC 0032Z 273DEG 27KT 4035 8654
WIND...HAIL 60MPH 1.00IN

$$

SMF

1 follow-up statement

304 
WWUS53 KIND 120050
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
850 PM EDT MON JUL 11 2011

INC023-159-120115-
/O.CON.KIND.SV.W.0265.000000T0000Z-110712T0115Z/
CLINTON-TIPTON-
850 PM EDT MON JUL 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CLINTON AND
WESTERN TIPTON COUNTIES UNTIL 915 PM EDT...

AT 847 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES
NORTHEAST OF FRANKFORT...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  KEMPTON AROUND 905 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4042 8631 4039 8631 4039 8628 4038 8628
      4038 8624 4040 8624 4040 8619 4022 8622
      4027 8669 4043 8667 4043 8651
TIME...MOT...LOC 0051Z 273DEG 27KT 4034 8635
WIND...HAIL 60MPH 1.00IN

$$

SMF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:09 PM EDT	Severe Thunderstorm Warning	IND	Carroll	21 min
Jul 11, 8:11 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Howard, Tipton	34 min
Jul 11, 8:11 PM EDT	Severe Thunderstorm Warning	IND	Randolph	14 min
Jul 11, 9:08 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Hamilton, Tipton	52 min
Jul 11, 9:31 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hamilton, Hancock, Hendricks, Madison, Marion	39 min
Jul 12, 3:30 AM EDT	Excessive Heat Warning	IND	Daviess, Knox, Lawrence, Martin	17 hr
Jul 12, 3:30 AM EDT	Heat Advisory	IND	Bartholomew, Brown, Clay, Decatur, Greene, Jackson and 6 more	17 hr
Jul 12, 6:25 PM EDT	Areal Flood Warning	IND	Knox	6 hr
Jul 12, 6:46 PM EDT	Areal Flood Warning	IND	Daviess	6 hr
Jul 12, 7:22 PM EDT	Special Weather Statement	IND	Martin	38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.