Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 79, NWS Indianapolis, IN

March 30, 2012Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 30, 2012, 7:39 PM EDT for Knox County, Indiana. It was in force for 15 min. 3 reports 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
Mar 30, 2012, 7:39 PM EDT (23:39 UTC)
Expired
Mar 30, 2012, 7:54 PM EDT
In force
15 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Knox County, IN

The radar

The Evansville,IN radar (KVWX), 59 km from the middle of the area, began a volume at 23:39 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
Mar 30, 7:45 PM EDTHAIL 0.25Vincennes, IN
Mar 30, 8:01 PM EDTHAIL 0.25Vincennes, IN
Mar 30, 8:03 PM EDTHAIL 0.25Vincennes, 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
Mar 30, 3:24 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 189 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 2012-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 164 joules per kilogram.LCLLFCEL10008507005003002001001 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 2012-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.193958Sfc1 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
164 J/kg
Mixed-layer CIN
-244 J/kg
Mixed-layer LCL
1045 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
230 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.

961 
WUUS53 KIND 302339
SVRIND
INC083-310015-
/O.NEW.KIND.SV.W.0079.120330T2339Z-120331T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
739 PM EDT FRI MAR 30 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL KNOX COUNTY IN SOUTHWEST INDIANA...

* UNTIL 815 PM EDT

* AT 732 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 NEAR   
  VINCENNES...AND MOVING EAST AT 25 MPH. ONE INCH HAIL WAS REPORTED  
  THREE MILES NORTH OF VINCENNES AT 735 PM EDT.

* LOCATIONS IMPACTED INCLUDE...
  BRUCEVILLE...
  MONROE CITY...
  BICKNELL...
  WHEATLAND...

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.

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

&&

LAT...LON 3869 8753 3874 8751 3877 8752 3878 8750
      3881 8753 3885 8753 3879 8725 3873 8725
      3873 8726 3872 8726 3869 8728 3867 8725
      3858 8725 3867 8759
TIME...MOT...LOC 2338Z 281DEG 21KT 3874 8746
WIND...HAIL 60MPH 1.00IN

$$

RYAN
1 follow-up statement
978 
WWUS53 KIND 302354
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
754 PM EDT FRI MAR 30 2012

INC083-310004-
/O.CAN.KIND.SV.W.0079.000000T0000Z-120331T0015Z/
KNOX-
754 PM EDT FRI MAR 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL KNOX COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE 
WITH THIS THUNDERSTORM.

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

LAT...LON 3869 8753 3874 8751 3877 8752 3878 8750
      3881 8753 3885 8753 3879 8725 3873 8725
      3873 8726 3872 8726 3869 8728 3867 8725
      3858 8725 3867 8759
TIME...MOT...LOC 2354Z 281DEG 21KT 3871 8734

$$

RYAN

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 30, 3:47 PM EDTSevere Thunderstorm WarningINDMontgomery, Parke, Putnam43 min
Mar 30, 4:18 PM EDTSevere Thunderstorm WarningINDBoone, Hamilton18 min
Mar 30, 4:26 PM EDTSevere Thunderstorm WarningINDBoone, Hendricks, Marion, Montgomery, Putnam49 min
Mar 30, 4:29 PM EDTSevere Thunderstorm WarningINDHendricks, Parke, Putnam46 min
Mar 30, 4:41 PM EDTSevere Thunderstorm WarningINDClay, Owen, Parke, Putnam, Vigo49 min
Mar 30, 4:46 PM EDTSevere Thunderstorm WarningINDDelaware, Hamilton, Madison, Tipton44 min
Mar 30, 5:00 PM EDTSevere Thunderstorm WarningINDHendricks, Johnson, Marion, Morgan, Shelby45 min
Mar 30, 5:13 PM EDTSevere Thunderstorm WarningINDHendricks, Morgan, Putnam47 min
Mar 30, 5:14 PM EDTSevere Thunderstorm WarningINDHancock, Hendricks, Marion, Shelby46 min
Mar 30, 5:16 PM EDTSevere Thunderstorm WarningINDHamilton, Hancock, Henry, Madison44 min
Mar 30, 5:20 PM EDTSevere Thunderstorm WarningINDDelaware, Randolph40 min
Mar 30, 5:22 PM EDTSevere Thunderstorm WarningINDRandolph11 min
Mar 30, 5:27 PM EDTSevere Thunderstorm WarningINDDelaware24 min
Mar 30, 5:38 PM EDTSevere Thunderstorm WarningINDDelaware, Randolph52 min
Mar 30, 5:43 PM EDTSevere Thunderstorm WarningINDClay, Owen, Putnam47 min
Mar 30, 5:45 PM EDTSevere Thunderstorm WarningINDJohnson, Marion, Morgan, Shelby45 min
Mar 30, 5:54 PM EDTSevere Thunderstorm WarningINDBartholomew, Brown, Johnson, Morgan, Owen, Putnam and 1 more51 min
Mar 30, 6:00 PM EDTSevere Thunderstorm WarningINDHancock, Henry, Rush, Shelby45 min
Mar 30, 6:04 PM EDTAreal Flood AdvisoryINDHendricks, Johnson, Marion, Morgan, Putnam116 min
Mar 30, 6:16 PM EDTSevere Thunderstorm WarningINDBartholomew, Decatur, Rush, Shelby44 min
Mar 30, 6:35 PM EDTAreal Flood AdvisoryINDClay, Johnson, Morgan, Owen, Shelby2 hr
Mar 30, 6:56 PM EDTSevere Thunderstorm WarningINDDecatur, Rush21 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012Every severe thunderstorm warning in 2012

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.