Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 238, NWS Indianapolis, IN

September 7, 20125 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Sep 7, 2012, 8:26 PM EDT for 5 counties in Indiana. It was in force for 49 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: Sep 7, 2012, 8:26 PM EDT (00:26 UTC)
Expired: Sep 7, 2012, 9:15 PM EDT
In force: 49 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, Knox County, IN, Sullivan County, IN, Vigo County, IN

The radar

The Evansville,IN radar (KVWX), 99 km from the middle of the area, began a volume at 00:28 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
Sep 7, 4:41 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.4 hours before the alert went out and 146 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: 723 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -113 m²/s²
0-3 km storm-relative helicity: 99 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.

538 
WUUS53 KIND 080026
SVRIND
INC021-055-083-153-167-080115-
/O.NEW.KIND.SV.W.0238.120908T0026Z-120908T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
826 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CLAY COUNTY IN WEST CENTRAL INDIANA...
  WESTERN GREENE COUNTY IN SOUTHWEST INDIANA...
  EXTREME NORTHEASTERN KNOX COUNTY IN SOUTHWEST INDIANA...
  SULLIVAN COUNTY IN SOUTHWEST INDIANA...
  SOUTHERN VIGO COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 915 PM EDT

* AT 824 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 8 MILES
  NORTHWEST OF SULLIVAN...OR 18 MILES SOUTHEAST OF MARSHALL...AND
  MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SULLIVAN...
  LINTON...
  GRAYSVILLE...
  SHELBURN...
  MEROM...
  TURTLE CREEK RESERVOIR...
  HYMERA...
  COALMONT...
  JASONVILLE...
  PAXTON...
  DUGGER...
  VICKSBURG...
  CARLISLE...
  PLEASANTVILLE...
  SANDBORN...

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 3922 8758 3931 8762 3936 8754 3941 8749
      3935 8717 3917 8711 3890 8715 3889 8755
      3896 8752 3898 8758 3906 8758 3908 8762
      3910 8762 3910 8765 3912 8766 3912 8764
      3914 8767
TIME...MOT...LOC 0025Z 324DEG 32KT 3918 8748
WIND...HAIL 60MPH 1.00IN

$$

TDUD

4 follow-up statements

686 
WWUS53 KIND 080036
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
836 PM EDT FRI SEP 7 2012

INC021-055-083-153-167-080115-
/O.CON.KIND.SV.W.0238.000000T0000Z-120908T0115Z/
CLAY-GREENE-KNOX-SULLIVAN-VIGO-
836 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
CLAY...WESTERN GREENE...EXTREME NORTHEASTERN KNOX...SULLIVAN AND
SOUTHERN VIGO COUNTIES UNTIL 915 PM EDT...

AT 833 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
SULLIVAN...OR 19 MILES NORTHEAST OF ROBINSON...MOVING SOUTHEAST AT 35
MPH.

LOCATIONS IMPACTED INCLUDE...
  LINTON...JASONVILLE...PAXTON...DUGGER...VICKSBURG...CARLISLE AND
  PLEASANTVILLE.

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 3922 8758 3931 8762 3936 8754 3941 8749
      3935 8717 3917 8711 3890 8715 3889 8755
      3896 8752 3898 8758 3906 8758 3908 8762
      3910 8762 3910 8765 3912 8766 3912 8764
      3914 8767
TIME...MOT...LOC 0036Z 324DEG 32KT 3910 8741
WIND...HAIL 60MPH 1.00IN

$$

TDUD

966 
WWUS53 KIND 080052
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
852 PM EDT FRI SEP 7 2012

INC021-055-083-153-167-080115-
/O.CON.KIND.SV.W.0238.000000T0000Z-120908T0115Z/
CLAY-GREENE-KNOX-SULLIVAN-VIGO-
852 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
CLAY...WESTERN GREENE...EXTREME NORTHEASTERN KNOX...SULLIVAN AND
SOUTHEASTERN VIGO COUNTIES UNTIL 915 PM EDT...

AT 847 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 7 MILES
SOUTHEAST OF SULLIVAN...OR 22 MILES EAST OF ROBINSON...MOVING
SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  LINTON AND PLEASANTVILLE.

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 3920 8757 3922 8752 3927 8734 3936 8725
      3935 8717 3917 8711 3890 8715 3889 8755
      3896 8752 3898 8758 3906 8758 3908 8762
      3910 8762 3910 8765 3912 8766 3912 8764
      3914 8767
TIME...MOT...LOC 0051Z 324DEG 32KT 3899 8731
WIND...HAIL 60MPH 1.00IN

$$

TDUD

189 
WWUS53 KIND 080102
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
902 PM EDT FRI SEP 7 2012

INC167-080112-
/O.CAN.KIND.SV.W.0238.000000T0000Z-120908T0115Z/
VIGO-
902 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN VIGO COUNTY IS
CANCELLED...

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

LAT...LON 3911 8757 3918 8748 3918 8730 3926 8726
      3926 8724 3930 8723 3935 8717 3917 8711
      3890 8715 3889 8754 3896 8752 3898 8758
      3906 8758
TIME...MOT...LOC 0102Z 324DEG 32KT 3891 8724

$$

INC021-055-083-153-080115-
/O.CON.KIND.SV.W.0238.000000T0000Z-120908T0115Z/
CLAY-GREENE-KNOX-SULLIVAN-
902 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
CLAY...WESTERN GREENE...EXTREME NORTHEASTERN KNOX AND SULLIVAN
COUNTIES UNTIL 915 PM EDT...

AT 901 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 9 MILES
SOUTHWEST OF LINTON...OR 22 MILES NORTHEAST OF VINCENNES...MOVING
SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN KNOX AND EXTREME
  SOUTHWESTERN GREENE COUNTIES.

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 3911 8757 3918 8748 3918 8730 3926 8726
      3926 8724 3930 8723 3935 8717 3917 8711
      3890 8715 3889 8754 3896 8752 3898 8758
      3906 8758
TIME...MOT...LOC 0102Z 324DEG 32KT 3891 8724
WIND...HAIL 60MPH 1.00IN

$$

TDUD

226 
WWUS53 KIND 080110
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
910 PM EDT FRI SEP 7 2012

INC021-055-083-153-080120-
/O.EXP.KIND.SV.W.0238.000000T0000Z-120908T0115Z/
CLAY-GREENE-KNOX-SULLIVAN-
910 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CLAY...WESTERN
GREENE...EXTREME NORTHEASTERN KNOX AND SULLIVAN COUNTIES WILL EXPIRE
AT 915 PM EDT/815 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 3911 8757 3918 8748 3918 8730 3926 8726
      3926 8724 3930 8723 3935 8717 3917 8711
      3890 8715 3889 8754 3896 8752 3898 8758
      3906 8758
TIME...MOT...LOC 0110Z 324DEG 32KT 3885 8719

$$

TDUD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 8:41 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hamilton, Marion	49 min
Sep 7, 9:17 PM EDT	Areal Flood Advisory	IND	Boone, Hamilton, Hancock, Johnson, Marion, Morgan	3 hr
Sep 7, 9:45 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Johnson, Rush, Shelby	45 min
Sep 7, 10:32 PM EDT	Areal Flood Advisory	IND	Daviess, Knox, Lawrence, Martin	3 hr
Sep 7, 10:39 PM EDT	Areal Flood Advisory	IND	Shelby	3 hr
Sep 7, 10:48 PM EDT	Tornado Warning	IND	Bartholomew, Decatur, Jennings	13 min
Sep 7, 11:04 PM EDT	Severe Thunderstorm Warning	IND	Jackson, Jennings	41 min
Sep 8, 12:29 AM EDT	Areal Flood Advisory	IND	Marion	3 hr
Sep 8, 3:36 AM EDT	Areal Flood Advisory	IND	Marion, Morgan	4 hr
Sep 8, 7:08 AM EDT	Areal Flood Advisory	IND	Marion, Morgan	4 hr

Nearby

Severe Thunderstorm Warnings in Indiana, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.