Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 47, NWS Indianapolis, IN

April 9, 20114 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 9, 2011, 8:27 AM EDT for 4 counties in Indiana. It was in force for 48 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
Apr 9, 2011, 8:27 AM EDT (12:27 UTC)
Expired
Apr 9, 2011, 9:15 AM EDT
In force
48 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Clay County, IN, Greene County, IN, Sullivan County, IN, Vigo County, IN

The radar

The Evansville,IN radar (KVWX), 100 km from the middle of the area, began a volume at 12:30 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

TimeReportWhereRemark
Apr 9, 8:55 AM EDTHAIL 14 Wsw Farmersburg, IN

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.

IssuedProductOfficeLasted
Apr 9, 8:25 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 0.5 hours before the alert went out and 143 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 12:00Z on 2011-04-09Temperature 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, Lincoln, IL at 12:00Z on 2011-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.19395878Sfc1 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
1370 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
151 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.

105 
WUUS53 KIND 091227
SVRIND
INC021-055-153-167-091315-
/O.NEW.KIND.SV.W.0047.110409T1227Z-110409T1315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
827 AM EDT SAT APR 9 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CLAY COUNTY IN WEST CENTRAL INDIANA...
  NORTHWESTERN GREENE COUNTY IN SOUTHWEST INDIANA...
  SULLIVAN COUNTY IN SOUTHWEST INDIANA...
  SOUTHERN VIGO COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 915 AM EDT/815 AM CDT/

* AT 723 AM CDT...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 NEAR
  NEW HEBRON...OR NEAR ROBINSON...AND MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MEROM...TURTLE CREEK RESERVOIR AND CARLISLE AROUND 840 AM EDT...
  GRAYSVILLE AND PAXTON AROUND 845 AM EDT...
  SULLIVAN AROUND 850 AM EDT...
  FAIRBANKS AND DUGGER AROUND 855 AM EDT...
  SHELBURN AND PRAIRIE CREEK AROUND 900 AM EDT...
  FARMERSBURG...HYMERA AND JASONVILLE AROUND 905 AM EDT...
  PIMENTO AND PRAIRIETON AROUND 910 AM 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.

&&

LAT...LON 3916 8767 3922 8759 3925 8759 3926 8762
      3931 8763 3936 8755 3947 8741 3919 8713
      3895 8732 3899 8753 3897 8754 3898 8758
      3899 8759 3906 8759 3911 8767 3914 8767
TIME...MOT...LOC 1227Z 218DEG 33KT 3900 8769
WIND...HAIL 60MPH 1.00IN

$$

AB/JP
1 follow-up statement
302 
WWUS53 KIND 091245 RRA
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
845 AM EDT SAT APR 9 2011

INC021-055-153-167-091315-
/O.CON.KIND.SV.W.0047.000000T0000Z-110409T1315Z/
CLAY-GREENE-SULLIVAN-VIGO-
845 AM EDT SAT APR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
GREENE...SULLIVAN...SOUTHWESTERN CLAY AND SOUTHERN VIGO COUNTIES
UNTIL 915 AM EDT/815 AM CDT/...

AT 842 AM 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 NEAR
HUTSONVILLE...OR 11 MILES NORTHEAST OF ROBINSON...MOVING NORTHEAST AT
40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SULLIVAN AROUND 850 AM EDT...
  FAIRBANKS AND DUGGER AROUND 855 AM EDT...
  SHELBURN AND PRAIRIE CREEK AROUND 900 AM EDT...
  FARMERSBURG...HYMERA AND JASONVILLE AROUND 905 AM EDT...
  PIMENTO...PRAIRIETON AND COALMONT AROUND 910 AM 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.

&&

LAT...LON 3918 8764 3922 8759 3925 8759 3926 8762
      3931 8763 3936 8755 3947 8741 3919 8713
      3895 8732 3901 8750 3906 8759 3911 8767
      3914 8767
TIME...MOT...LOC 1245Z 218DEG 33KT 3913 8756
WIND...HAIL 60MPH 1.00IN

$$

AB/JP

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 8:00 AM EDTSevere Thunderstorm WarningINDKnox, Sullivan45 min
Apr 9, 9:03 AM EDTSevere Thunderstorm WarningINDGreene, Knox, Sullivan27 min
Apr 9, 9:06 AM EDTSevere Thunderstorm WarningINDDaviess, Knox, Sullivan39 min
Apr 9, 9:09 AM EDTSevere Thunderstorm WarningINDClay, Owen, Putnam, Vigo51 min
Apr 9, 9:22 AM EDTSevere Thunderstorm WarningINDGreene, Monroe, Owen38 min
Apr 9, 9:31 AM EDTSevere Thunderstorm WarningINDDaviess, Greene, Knox, Sullivan44 min
Apr 9, 9:47 AM EDTFlash Flood WarningINDGreene, Owen, Sullivan, Vigo5 hr
Apr 9, 10:10 AM EDTFlash Flood WarningINDBrown, Daviess, Lawrence, Martin, Monroe4 hr
Apr 9, 10:21 AM EDTSevere Thunderstorm WarningINDJackson, Lawrence39 min
Apr 9, 12:00 PM EDTRiver Flood WarningINDLawrence, Martin8 days
Apr 9, 12:00 PM EDTRiver Flood WarningINDDaviess, Gibson, Knox, Pike37 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.