Alert archive / Indiana / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 39, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at May 11, 2011, 6:48 PM CDT for LaPorte County, Saint Joseph County, Indiana. It was in force for 47 min. 2 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
- May 11, 2011, 6:48 PM CDT (23:48 UTC)
- Expired
- May 11, 2011, 7:35 PM CDT
- In force
- 47 min
- Issued by
- NWS Northern Indiana
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties LaPorte County, IN, Saint Joseph County, IN
The radar
The Northern Indiana radar (KIWX), 79 km from the middle of the area, began a volume at 23:50 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 |
|---|---|---|---|
| May 11, 7:00 PM CDT | HAIL 0.88 | 1 Sse Tracy, IN | |
| May 11, 7:00 PM CDT | HAIL 1 | 1 Sse Tracy, 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 11, 5:56 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.8 hours before the alert went out and 232 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
- 2360 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 875 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -68 m²/s²
- 0-3 km storm-relative helicity
- -51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
149
WUUS53 KIWX 112348
SVRIWX
INC091-141-120045-
/O.NEW.KIWX.SV.W.0039.110511T2348Z-110512T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
648 PM CDT WED MAY 11 2011
THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN LA PORTE COUNTY IN NORTHWEST INDIANA...
WESTERN ST. JOSEPH COUNTY IN NORTH CENTRAL INDIANA...
* UNTIL 745 PM CDT/845 PM EDT/
* AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL.
THIS SEVERE STORM WAS LOCATED 4 MILES NORTHEAST OF KINGSFORD
HEIGHTS...OR 8 MILES SOUTHEAST OF LA PORTE...AND MOVING NORTH AT 15
MPH.
* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
STILLWELL...
OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE FISH
LAKE...BYRON...ROLLING PRARIE...HUDSON LAKE AND HESSTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH...
PREPARE IMMEDIATELY FOR PING PONG BALL SIZE HAIL...ALONG WITH DEADLY
CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.
&&
LAT...LON 4177 8670 4176 8641 4149 8652 4144 8653
4144 8661 4145 8672
TIME...MOT...LOC 2347Z 201DEG 11KT 4152 8662
WIND...HAIL <50MPH 1.50IN
$$
JC1 follow-up statement
247
WWUS53 KIWX 120035
SVSIWX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
735 PM CDT WED MAY 11 2011
INC091-141-120045-
/O.CAN.KIWX.SV.W.0039.000000T0000Z-110512T0045Z/
ST. JOSEPH IN-LA PORTE IN-
735 PM CDT WED MAY 11 2011
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ST. JOSEPH COUNTY IN
NORTH CENTRAL INDIANA...AND NORTHEASTERN LA PORTE COUNTY IN NORTHWEST
INDIANA IS CANCELLED...
AT 732 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAD WEAKENED AND
NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...
THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.
&&
LAT...LON 4177 8670 4176 8641 4149 8652 4144 8653
4144 8661 4145 8672
TIME...MOT...LOC 0035Z 201DEG 11KT 4166 8655
$$
JCThe office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 6:37 AM CDT | Severe Thunderstorm Warning | IWX | DeKalb, LaGrange, Noble, Steuben, Whitley | 1 min |
| May 11, 6:06 PM CDT | Special Weather Statement | IWX | Marshall, Starke | 24 min |
| May 11, 6:21 PM CDT | Severe Thunderstorm Warning | IWX | Marshall, Saint Joseph, Starke | 54 min |
| May 11, 6:28 PM CDT | Special Weather Statement | IWX | LaPorte | 32 min |
| May 11, 6:33 PM CDT | Severe Thunderstorm Warning | IWX | LaPorte | 57 min |
| May 11, 6:38 PM CDT | Special Marine Warning | IWX | 82 min |
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.