Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 37, NWS Indianapolis, IN

April 4, 2011Delaware County, Madison County, Tipton County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 4, 2011, 5:47 AM EDT for Delaware County, Madison County, Tipton County, Indiana. It was in force for 28 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: Apr 4, 2011, 5:47 AM EDT (09:47 UTC)
Expired: Apr 4, 2011, 6:15 AM EDT
In force: 28 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Delaware County, IN, Madison County, IN, Tipton County, IN

The radar

The Indianapolis radar (KIND), 83 km from the middle of the area, began a volume at 09:48 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
Apr 4, 5:30 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.8 hours before the alert went out and 178 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: 2409 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 429 m²/s²
0-3 km storm-relative helicity: 944 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

874 
WUUS53 KIND 040947
SVRIND
INC035-095-159-041015-
/O.NEW.KIND.SV.W.0037.110404T0947Z-110404T1015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
547 AM EDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DELAWARE COUNTY IN EAST CENTRAL INDIANA...
  NORTHERN MADISON COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN TIPTON COUNTY IN CENTRAL INDIANA...

* UNTIL 615 AM EDT

* AT 543 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR ALEXANDRIA...OR 10 MILES
  SOUTHWEST OF FAIRMOUNT...AND MOVING EAST AT 70 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GASTON...MATTHEWS...BALL STATE UNIVERSITY AND MUNCIE AROUND 555 AM
  EDT...
  EATON AND SELMA AROUND 600 AM EDT...
  CONVERSE AND ALBANY AROUND 605 AM EDT...

THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 36 AND 52.

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.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4016 8523 4013 8587 4023 8586 4023 8590
      4040 8588 4039 8521
TIME...MOT...LOC 0947Z 260DEG 63KT 4030 8565
WIND...HAIL 60MPH <.75IN

$$
JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 4:12 AM EDT	Special Weather Statement	IND	Fountain, Tippecanoe, Warren	33 min
Apr 4, 4:52 AM EDT	Special Weather Statement	IND	Boone, Carroll, Clinton, Howard, Montgomery, Tipton	23 min
Apr 4, 5:04 AM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard, Tipton	26 min
Apr 4, 5:16 AM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Hamilton, Madison, Tipton	29 min
Apr 4, 5:31 AM EDT	Severe Thunderstorm Warning	IND	Howard	14 min
Apr 4, 6:12 AM EDT	Severe Thunderstorm Warning	IND	Delaware	19 min
Apr 4, 6:27 AM EDT	Severe Thunderstorm Warning	IND	Sullivan, Vigo	32 min
Apr 4, 7:03 AM EDT	Severe Thunderstorm Warning	IND	Hendricks, Marion, Morgan, Owen, Putnam	42 min
Apr 4, 7:08 AM EDT	Severe Thunderstorm Warning	IND	Brown, Monroe, Morgan, Owen	35 min
Apr 4, 7:26 AM EDT	Severe Thunderstorm Warning	IND	Brown, Johnson, Morgan	23 min
Apr 4, 7:41 AM EDT	Severe Thunderstorm Warning	IND	Shelby	22 min
Apr 4, 7:56 AM EDT	Severe Thunderstorm Warning	IND	Rush, Shelby	28 min
Apr 4, 7:59 AM EDT	Severe Thunderstorm Warning	IND	Sullivan, Vigo	24 min
Apr 4, 10:23 AM EDT	Special Weather Statement	IND	Brown, Monroe	37 min
Apr 4, 10:35 AM EDT	Special Weather Statement	IND	Daviess, Knox, Martin	40 min
Apr 4, 12:08 PM EDT	Special Weather Statement	IND	Bartholomew, Decatur, Jackson, Jennings, Lawrence, Martin	37 min
Apr 4, 12:59 PM EDT	Areal Flood Advisory	IND	Bartholomew, Brown, Clay, Greene, Hancock, Henry and 7 more	11 hr
Apr 4, 6:14 PM EDT	River Flood Warning	IND	Shelby	43 hr
Apr 4, 6:14 PM EDT	River Flood Warning	IND	Jackson, Lawrence, Washington	5 days

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.