Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 32, NWS Indianapolis, IN

March 15, 2012Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 15, 2012, 2:14 PM EDT for Knox County, Indiana. It was in force for 24 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: Mar 15, 2012, 2:14 PM EDT (18:14 UTC)
Expired: Mar 15, 2012, 2:38 PM EDT
In force: 24 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Knox County, IN

The radar

The Evansville,IN radar (KVWX), 26 km from the middle of the area, began a volume at 17:56 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

Lincoln, IL (KILX), launched 12:00Z, 6.2 hours before the alert went out and 204 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: 1579 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 117 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.

923 
WUUS53 KIND 151814
SVRIND
INC083-151845-
/O.NEW.KIND.SV.W.0032.120315T1814Z-120315T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
214 PM EDT THU MAR 15 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

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

* UNTIL 245 PM EDT

* AT 210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR PATOKA...OR 7 MILES EAST OF MOUNT CARMEL...
  AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DECKER...

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 3843 8775 3851 8766 3851 8765 3852 8765
      3861 8756 3851 8747 3849 8749 3850 8753
      3849 8755 3849 8757 3844 8760 3845 8766
      3843 8767 3841 8774
TIME...MOT...LOC 1814Z 229DEG 19KT 3845 8763
WIND...HAIL <50MPH 1.00IN

$$

MRD/SMF

3 follow-up statements

906 
WWUS53 KIND 151820
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
220 PM EDT THU MAR 15 2012

INC083-151845-
/O.CON.KIND.SV.W.0032.000000T0000Z-120315T1845Z/
KNOX-
220 PM EDT THU MAR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
KNOX COUNTY UNTIL 245 PM EDT...

AT 217 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
THIS STORM WAS LOCATED NEAR PATOKA...OR 7 MILES NORTHWEST OF
PRINCETON...MOVING NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  DECKER.

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 3843 8771 3851 8766 3851 8765 3852 8765
      3861 8756 3851 8747 3849 8749 3850 8753
      3849 8755 3849 8757 3844 8760 3845 8766
      3843 8767
TIME...MOT...LOC 1820Z 235DEG 15KT 3845 8761
WIND...HAIL <50MPH 1.50IN

$$

MRD/SMF

531 
WWUS53 KIND 151831
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
231 PM EDT THU MAR 15 2012

INC083-151845-
/O.CON.KIND.SV.W.0032.000000T0000Z-120315T1845Z/
KNOX-
231 PM EDT THU MAR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
KNOX COUNTY UNTIL 245 PM EDT...

AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR PATOKA...OR 8 MILES NORTH OF PRINCETON...
MOVING NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  DECKER.

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 3845 8766 3851 8765 3852 8765 3861 8756
      3851 8747 3849 8749 3850 8753 3849 8755
      3849 8757 3844 8760
TIME...MOT...LOC 1831Z 235DEG 15KT 3848 8756
WIND...HAIL <50MPH 1.00IN

$$

MRD/SMF

203 
WWUS53 KIND 151838
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
238 PM EDT THU MAR 15 2012

INC083-151847-
/O.CAN.KIND.SV.W.0032.000000T0000Z-120315T1845Z/
KNOX-
238 PM EDT THU MAR 15 2012

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

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

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

LAT...LON 3845 8766 3851 8765 3852 8765 3861 8756
      3851 8747 3849 8749 3850 8753 3849 8755
      3849 8757 3844 8760
TIME...MOT...LOC 1837Z 235DEG 15KT 3849 8754

$$

MRD/SMF

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 4:24 AM EDT	Special Weather Statement	IND	Carroll, Clinton, Tippecanoe	51 min
Mar 15, 5:08 AM EDT	Special Weather Statement	IND	Howard	67 min
Mar 15, 5:44 AM EDT	Special Weather Statement	IND	Martin	46 min
Mar 15, 7:22 AM EDT	Special Weather Statement	IND	Jackson	23 min
Mar 15, 7:44 AM EDT	Special Weather Statement	IND	Jackson, Jennings	31 min
Mar 15, 7:47 AM EDT	Special Weather Statement	IND	Lawrence	28 min
Mar 15, 8:02 AM EDT	Severe Thunderstorm Warning	IND	Jennings	18 min
Mar 15, 8:43 AM EDT	Special Weather Statement	IND	Jennings	32 min
Mar 15, 9:16 AM EDT	Special Weather Statement	IND	Jennings	29 min
Mar 15, 2:49 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Knox	26 min
Mar 15, 3:17 PM EDT	Severe Thunderstorm Warning	IND	Clay, Greene, Owen	28 min
Mar 15, 4:04 PM EDT	Severe Thunderstorm Warning	IND	Morgan, Owen	26 min
Mar 15, 4:29 PM EDT	Special Weather Statement	IND	Morgan	31 min
Mar 15, 5:05 PM EDT	Special Weather Statement	IND	Johnson, Shelby	25 min
Mar 15, 5:29 PM EDT	Special Weather Statement	IND	Hancock	31 min

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.