Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 6, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at May 6, 2012, 4:46 PM CDT for Iroquois County, Illinois. It was in force for 44 min. 1 report 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 6, 2012, 4:46 PM CDT (21:46 UTC)
- Expired
- May 6, 2012, 5:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
County Iroquois County, IL
The radar
The Chicago radar (KLOT), 96 km from the middle of the area, began a volume at 21:48 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 6, 5:00 PM CDT | TORNADO | 3 E Watseka, IL | DELAYED REPORT. TIME BASED OFF RADAR. POSSIBLE TORNADO. DAMAGE STARTED ON SE SIDE OF WATSEKA E OF RT 1 AND S OF RT 24. MULTIPLE TREES DOWN. SIDING RIPPED OFF BLDGS. SIGNS MANGLED. ON A PROPERTY ON CR 1730N...A 40X40 CINDER BLOCK BLDG WAS TORN APART...WITH CIND |
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 6, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.8 hours before the alert went out and 110 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
- 2922 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 576 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
726 WFUS53 KLOT 062146 TORLOT ILC075-062230- /O.NEW.KLOT.TO.W.0006.120506T2146Z-120506T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 446 PM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... EAST CENTRAL IROQUOIS COUNTY... * UNTIL 530 PM CDT * AT 443 PM...TRAINED WEATHER SPOTTERS AND LAW ENFORCEMENT REPORTED A FUNNEL CLOUD NEAR WATSEKA. A TORNADO MAY DEVELOP AT ANY TIME! DOPPLER RADAR SHOWED THIS TORNADIC STORM MOVING EAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... SHELDON AND IROQUOIS. LAT...LON 4084 8753 4072 8759 4082 8776 4085 8774 TIME...MOT...LOC 2145Z 288DEG 14KT 4081 8768 $$ BMD
3 follow-up statements
715
WWUS53 KLOT 062202
SVSLOT
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
502 PM CDT SUN MAY 6 2012
ILC075-062230-
/O.CON.KLOT.TO.W.0006.000000T0000Z-120506T2230Z/
IROQUOIS IL-
502 PM CDT SUN MAY 6 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL IROQUOIS
COUNTY UNTIL 530 PM CDT...
AT 457 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO. THIS
TORNADO WAS LOCATED SOUTHEAST OF WATSEKA...MOVING SOUTHEAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
SHELDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.
&&
LAT...LON 4078 8769 4079 8767 4079 8756 4072 8759
4077 8767
TIME...MOT...LOC 2202Z 294DEG 12KT 4076 8764
$$
BMD418 WWUS53 KLOT 062215 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 515 PM CDT SUN MAY 6 2012 ILC075-062230- /O.CON.KLOT.TO.W.0006.000000T0000Z-120506T2230Z/ IROQUOIS IL- 515 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL IROQUOIS COUNTY UNTIL 530 PM CDT... AT 511 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR SHELDON...OR 6 MILES EAST OF WATSEKA...MOVING SOUTHEAST AT 15 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EASTERN IROQUOIS COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4078 8765 4079 8756 4072 8759 4076 8765 TIME...MOT...LOC 2215Z 294DEG 11KT 4075 8761 $$ BMD
022 WWUS53 KLOT 062222 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 522 PM CDT SUN MAY 6 2012 ILC075-062231- /O.EXP.KLOT.TO.W.0006.000000T0000Z-120506T2230Z/ IROQUOIS IL- 522 PM CDT SUN MAY 6 2012 ...THE TORNADO WARNING FOR EAST CENTRAL IROQUOIS COUNTY WILL EXPIRE AT 530 PM CDT... THE TORNADO WARNING HAS EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN IROQUOIS COUNTY UNTIL 600 PM CDT. LAT...LON 4078 8765 4079 8756 4072 8759 4076 8765 TIME...MOT...LOC 2221Z 294DEG 11KT 4074 8759 $$ BMD
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 3:56 AM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more | 27 hr |
| May 6, 9:39 AM CDT | Special Weather Statement | LOT | DeKalb | 36 min |
| May 6, 10:02 AM CDT | Special Weather Statement | LOT | Grundy | 28 min |
| May 6, 10:15 AM CDT | Special Weather Statement | LOT | Boone | 45 min |
| May 6, 10:44 AM CDT | Special Weather Statement | LOT | Kendall | 31 min |
| May 6, 10:48 AM CDT | Severe Thunderstorm Warning | LOT | Kendall | 42 min |
| May 6, 11:24 AM CDT | Special Weather Statement | LOT | Will | 36 min |
| May 6, 1:55 PM CDT | Special Weather Statement | LOT | Cook | 65 min |
| May 6, 1:56 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee, Livingston | 64 min |
| May 6, 2:37 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 38 min |
| May 6, 2:39 PM CDT | Special Marine Warning | LOT | 96 min | |
| May 6, 2:46 PM CDT | Special Weather Statement | LOT | Livingston | 59 min |
| May 6, 2:57 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee | 63 min |
| May 6, 3:19 PM CDT | Flash Flood Warning | LOT | Ford, Grundy, Iroquois, Kankakee, Livingston | 6 hr |
| May 6, 3:26 PM CDT | Tornado Warning | LOT | Iroquois | 64 min |
| May 6, 3:31 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 59 min |
| May 6, 3:39 PM CDT | Flash Flood Warning | LOT | Grundy, LaSalle, Livingston | 6 hr |
| May 6, 3:41 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 64 min |
| May 6, 3:42 PM CDT | Tornado Warning | LOT | LaSalle, Livingston | 48 min |
| May 6, 3:43 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 52 min |
| May 6, 4:02 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 48 min |
| May 6, 4:03 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Grundy, Kankakee, Livingston | 57 min |
| May 6, 4:28 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 32 min |
| May 6, 4:56 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 64 min |
| May 6, 5:01 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 59 min |
| May 6, 5:15 PM CDT | Flash Flood Warning | LOT | Ford, Iroquois | 6 hr |
| May 6, 5:25 PM CDT | Tornado Warning | LOT | Ford, Iroquois | 50 min |
Nearby
Tornado Warnings in Illinois, 2012Every tornado warning in 2012Tornadoes 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.