Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 36, NWS Indianapolis, IN

April 4, 2011Howard County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 4, 2011, 5:31 AM EDT for Howard County, Indiana. It was in force for 14 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, 5:31 AM EDT (09:31 UTC)
Expired
Apr 4, 2011, 5:45 AM EDT
In force
14 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Howard County, IN

The radar

The Northern Indiana radar (KIWX), 94 km from the middle of the area, began a volume at 09:31 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.5 hours before the alert went out and 217 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2011-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2011-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 429 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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.

017 
WUUS53 KIND 040931
SVRIND
INC067-040945-
/O.NEW.KIND.SV.W.0036.110404T0931Z-110404T0945Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN HOWARD COUNTY IN CENTRAL INDIANA...

* UNTIL 545 AM EDT

* AT 529 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 5 MILES WEST OF SWAYZEE...OR 11
  MILES EAST OF KOKOMO...AND MOVING EAST AT 70 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
  HOWARD COUNTY.

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.

&&

LAT...LON 4058 8586 4052 8586 4041 8586 4041 8598
      4057 8602 4059 8594 4058 8587
TIME...MOT...LOC 0931Z 258DEG 62KT 4050 8588
WIND...HAIL 60MPH <.75IN

$$
JH
1 follow-up statement
048 
WWUS53 KIND 040943
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
543 AM EDT MON APR 4 2011

INC067-040953-
/O.EXP.KIND.SV.W.0036.000000T0000Z-110404T0945Z/
HOWARD-
543 AM EDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HOWARD COUNTY WILL 
EXPIRE AT 545 AM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4058 8586 4052 8586 4041 8586 4041 8598
      4057 8602 4059 8594 4058 8587
TIME...MOT...LOC 0943Z 258DEG 62KT 4053 8561

$$

50

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 4, 4:12 AM EDTSpecial Weather StatementINDFountain, Tippecanoe, Warren33 min
Apr 4, 4:52 AM EDTSpecial Weather StatementINDBoone, Carroll, Clinton, Howard, Montgomery, Tipton23 min
Apr 4, 5:04 AM EDTSevere Thunderstorm WarningINDCarroll, Clinton, Howard, Tipton26 min
Apr 4, 5:16 AM EDTSevere Thunderstorm WarningINDBoone, Clinton, Hamilton, Madison, Tipton29 min
Apr 4, 5:47 AM EDTSevere Thunderstorm WarningINDDelaware, Madison, Tipton28 min
Apr 4, 6:12 AM EDTSevere Thunderstorm WarningINDDelaware19 min
Apr 4, 6:27 AM EDTSevere Thunderstorm WarningINDSullivan, Vigo32 min
Apr 4, 7:03 AM EDTSevere Thunderstorm WarningINDHendricks, Marion, Morgan, Owen, Putnam42 min
Apr 4, 7:08 AM EDTSevere Thunderstorm WarningINDBrown, Monroe, Morgan, Owen35 min
Apr 4, 7:26 AM EDTSevere Thunderstorm WarningINDBrown, Johnson, Morgan23 min
Apr 4, 7:41 AM EDTSevere Thunderstorm WarningINDShelby22 min
Apr 4, 7:56 AM EDTSevere Thunderstorm WarningINDRush, Shelby28 min
Apr 4, 7:59 AM EDTSevere Thunderstorm WarningINDSullivan, Vigo24 min
Apr 4, 10:23 AM EDTSpecial Weather StatementINDBrown, Monroe37 min
Apr 4, 10:35 AM EDTSpecial Weather StatementINDDaviess, Knox, Martin40 min
Apr 4, 12:08 PM EDTSpecial Weather StatementINDBartholomew, Decatur, Jackson, Jennings, Lawrence, Martin37 min
Apr 4, 12:59 PM EDTAreal Flood AdvisoryINDBartholomew, Brown, Clay, Greene, Hancock, Henry and 7 more11 hr
Apr 4, 6:14 PM EDTRiver Flood WarningINDShelby43 hr
Apr 4, 6:14 PM EDTRiver Flood WarningINDJackson, Lawrence, Washington5 days

Nearby

Severe Thunderstorm Warnings in Indiana, 2011Every 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.