Alert archive / Indiana / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 81, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 1, 2012, 9:52 PM EDT for Boone County, Hamilton County, Marion County, Indiana. It was in force for 23 min. 4 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
- Apr 1, 2012, 9:52 PM EDT (01:52 UTC)
- Expired
- Apr 1, 2012, 10:15 PM EDT
- In force
- 23 min
- Issued by
- NWS Indianapolis, IN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Boone County, IN, Hamilton County, IN, Marion County, IN
The radar
The Indianapolis radar (KIND), 40 km from the middle of the area, began a volume at 01:52 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 1, 10:00 PM EDT | HAIL 0.88 | Westfield, IN | |
| Apr 1, 10:13 PM EDT | HAIL 1 | Carmel, IN | |
| Apr 1, 10:23 PM EDT | HAIL 1 | 1 E Carmel, IN | |
| Apr 1, 10:25 PM EDT | HAIL 1.5 | 2 S Castleton, IN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.9 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.
- Mixed-layer CAPE
- 663 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 943 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
761 WUUS53 KIND 020152 SVRIND INC011-057-097-020215- /O.NEW.KIND.SV.W.0081.120402T0152Z-120402T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE INDIANAPOLIS IN 952 PM EDT SUN APR 1 2012 THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL BOONE COUNTY IN CENTRAL INDIANA... HAMILTON COUNTY IN CENTRAL INDIANA... NORTHEASTERN MARION COUNTY IN CENTRAL INDIANA... * UNTIL 1015 PM EDT * AT 947 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 11 MILES NORTHWEST OF NOBLESVILLE...OR 19 MILES SOUTHEAST OF FRANKFORT...AND MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... NOBLESVILLE... CARMEL... FISHERS... WESTFIELD... CASTLETON... GEIST RESERVOIR... THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 0 AND 12. 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 3998 8587 3985 8604 4010 8632 4020 8618 TIME...MOT...LOC 0152Z 314DEG 24KT 4011 8618 WIND...HAIL <50MPH 1.00IN $$ AB/RYAN
1 follow-up statement
615 WWUS53 KIND 020203 SVSIND SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1003 PM EDT SUN APR 1 2012 INC011-020213- /O.CAN.KIND.SV.W.0081.000000T0000Z-120402T0215Z/ BOONE- 1003 PM EDT SUN APR 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BOONE COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS. LAT...LON 3998 8587 3985 8604 4003 8623 4013 8609 TIME...MOT...LOC 0203Z 314DEG 24KT 4005 8612 $$ INC057-097-020215- /O.CON.KIND.SV.W.0081.000000T0000Z-120402T0215Z/ HAMILTON-MARION- 1003 PM EDT SUN APR 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN HAMILTON AND NORTHEASTERN MARION COUNTIES UNTIL 1015 PM EDT... AT 1001 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 5 MILES WEST OF NOBLESVILLE...OR 20 MILES NORTH OF INDIANAPOLIS...MOVING SOUTHEAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... NOBLESVILLE...CARMEL...FISHERS...CASTLETON AND GEIST RESERVOIR. 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 3998 8587 3985 8604 4003 8623 4013 8609 TIME...MOT...LOC 0203Z 314DEG 24KT 4005 8612 WIND...HAIL <50MPH 1.00IN $$ RYAN
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 9:28 PM EDT | Special Weather Statement | IND | Delaware | 47 min |
| Apr 1, 9:32 PM EDT | Special Weather Statement | IND | Hamilton | 43 min |
| Apr 1, 9:42 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Hancock, Henry, Madison | 33 min |
| Apr 1, 10:14 PM EDT | Severe Thunderstorm Warning | IND | Hancock, Henry, Rush | 31 min |
| Apr 1, 10:16 PM EDT | Severe Thunderstorm Warning | IND | Hamilton, Hancock, Marion, Shelby | 29 min |
| Apr 1, 10:44 PM EDT | Severe Thunderstorm Warning | IND | Rush | 31 min |
| Apr 1, 10:45 PM EDT | Severe Thunderstorm Warning | IND | Hancock, Marion, Shelby | 30 min |
| Apr 1, 11:09 PM EDT | Severe Thunderstorm Warning | IND | Decatur, Rush | 36 min |
| Apr 1, 11:14 PM EDT | Severe Thunderstorm Warning | IND | Bartholomew, Decatur, Shelby | 46 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.