Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 87, NWS Indianapolis, IN

April 26, 20114 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 26, 2011, 9:34 PM EDT for 4 counties in Indiana. It was in force for 41 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 26, 2011, 9:34 PM EDT (01:34 UTC)
Expired
Apr 26, 2011, 10:15 PM EDT
In force
41 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Carroll County, IN, Clinton County, IN, Howard County, IN, Tippecanoe County, IN

The radar

The Indianapolis radar (KIND), 93 km from the middle of the area, began a volume at 01:37 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.

IssuedProductOfficeLasted
Apr 26, 3:02 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.6 hours before the alert went out and 188 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, Lincoln, IL at 00:00Z on 2011-04-27Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2011-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 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
1179 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
125 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.

755 
WUUS53 KIND 270134
SVRIND
INC015-023-067-157-270215-
/O.NEW.KIND.SV.W.0087.110427T0134Z-110427T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
934 PM EDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CARROLL COUNTY IN NORTH CENTRAL INDIANA...
  NORTHWESTERN CLINTON COUNTY IN CENTRAL INDIANA...
  WESTERN HOWARD COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN TIPPECANOE COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 1015 PM EDT

* AT 930 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 8 MILES NORTHWEST OF FRANKFORT...AND MOVING
  NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FLORA AROUND 950 PM EDT...
  BURLINGTON AROUND 955 PM EDT...
  GALVESTON AROUND 1015 PM EDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 154 AND 168.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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 4070 8637 4058 8637 4058 8604 4022 8659
      4023 8694 4071 8643
TIME...MOT...LOC 0133Z 237DEG 33KT 4036 8660
WIND...HAIL <50MPH 1.00IN

$$

77/TDUD
1 follow-up statement
833 
WWUS53 KIND 270150
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
950 PM EDT TUE APR 26 2011

INC015-023-067-157-270215-
/O.CON.KIND.SV.W.0087.000000T0000Z-110427T0215Z/
CARROLL-CLINTON-HOWARD-TIPPECANOE-
950 PM EDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CLINTON...
SOUTHEASTERN TIPPECANOE...WESTERN HOWARD AND SOUTHEASTERN CARROLL
COUNTIES UNTIL 1015 PM EDT...

AT 948 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 6 MILES WEST OF FRANKFORT...MOVING NORTHEAST AT 45
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FRANKFORT AND ROSSVILLE AROUND 955 PM EDT...
  BURLINGTON AROUND 1010 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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

&&

LAT...LON 4023 8687 4064 8638 4058 8637 4058 8604
      4022 8659
TIME...MOT...LOC 0150Z 238DEG 40KT 4031 8660
WIND...HAIL <50MPH 1.00IN

$$

45/SMF

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 8:26 PM EDTSevere Thunderstorm WarningINDCarroll34 min
Apr 26, 9:21 PM EDTSevere Thunderstorm WarningINDFountain, Montgomery, Parke39 min
Apr 26, 11:35 PM EDTFlash Flood WarningINDDaviess, Greene, Knox, Lawrence, Martin, Monroe and 1 more5 hr
Apr 26, 11:42 PM EDTSevere Thunderstorm WarningINDDaviess, Greene, Knox, Sullivan24 min
Apr 27, 12:48 AM EDTFlash Flood WarningINDBartholomew, Brown, Decatur, Jackson, Jennings5 hr
Apr 27, 1:10 AM EDTSevere Thunderstorm WarningINDDecatur, Jennings50 min
Apr 27, 2:06 AM EDTSpecial Weather StatementINDClinton, Howard, Tipton39 min
Apr 27, 5:32 AM EDTAreal Flood WarningINDBartholomew, Jackson, Jennings30 hr
Apr 27, 7:04 PM EDTSevere Thunderstorm WarningINDBoone, Hendricks, Marion41 min
Apr 27, 7:05 PM EDTTornado WarningINDBoone, Hendricks, Marion40 min

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.