Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 5, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at May 6, 2012, 3:42 PM CDT for LaSalle County, Livingston County, Illinois. It was in force for 48 min. 3 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 6, 2012, 3:42 PM CDT (20:42 UTC)
- Expired
- May 6, 2012, 4:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
Counties LaSalle County, IL, Livingston County, IL
The radar
The Chicago radar (KLOT), 90 km from the middle of the area, began a volume at 20:42 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, 3:50 PM CDT | FUNNEL CLOUD | 6 E Wenona, IL | FUNNEL WAS BECOMING RAIN-WRAPPED. |
| May 6, 3:50 PM CDT | TSTM WND GST 60 | 6 E Wenona, IL | |
| May 6, 3:57 PM CDT | FUNNEL CLOUD | Streator, IL | LAW ENFORCEMENT RELAYED A PUBLIC REPORT OF A POSSIBLE FUNNEL VISIBLE FROM THE 1500 BLOCK OF SOUTH JEFFERSON. |
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, 8.7 hours before the alert went out and 106 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.
600 WFUS53 KLOT 062042 TORLOT ILC099-105-062130- /O.NEW.KLOT.TO.W.0005.120506T2042Z-120506T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 342 PM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL LA SALLE COUNTY... NORTHWESTERN LIVINGSTON COUNTY... * UNTIL 430 PM CDT * AT 337 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR WENONA...OR 13 MILES SOUTHWEST OF STREATOR...AND MOVING EAST AT 15 MPH. STATE LAW ENFORCEMENT REPORTED STRONG ROTATION VISIBLE IN THE CLOUDS WITH THIS STORM. * THIS TORNADIC STORM WILL BE NEAR... STREATOR AROUND 420 PM. LAT...LON 4120 8878 4093 8883 4093 8905 4111 8905 TIME...MOT...LOC 2042Z 264DEG 15KT 4103 8902 $$ RATZER
3 follow-up statements
650 WWUS53 KLOT 062058 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 358 PM CDT SUN MAY 6 2012 ILC099-105-062130- /O.CON.KLOT.TO.W.0005.000000T0000Z-120506T2130Z/ LA SALLE IL-LIVINGSTON IL- 358 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN LIVINGSTON AND SOUTH CENTRAL LA SALLE COUNTIES UNTIL 430 PM CDT... AT 351 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. TRAINED WEATHER SPOTTERS REPORTED A RAIN WRAPPED FUNNEL CLOUD WITH THIS STORM 6 MILES EAST OF WENONA AT 350 PM CDT...WITH 60 MPH STRAIGHT LINE WINDS ALSO OBSERVED. THIS TORNADIC SEVERE THUNDERSTORM WAS LOCATED EAST WENONA...OR 8 MILES SOUTHWEST OF STREATOR...MOVING EAST AT 15 MPH. THE TORNADO WILL BE NEAR... STREATOR AROUND 420 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHICAGO. && LAT...LON 4120 8878 4093 8883 4093 8905 4111 8905 TIME...MOT...LOC 2056Z 264DEG 15KT 4104 8895 $$ RATZER
921 WWUS53 KLOT 062113 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 413 PM CDT SUN MAY 6 2012 ILC099-105-062130- /O.CON.KLOT.TO.W.0005.000000T0000Z-120506T2130Z/ LA SALLE IL-LIVINGSTON IL- 413 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN LIVINGSTON AND SOUTH CENTRAL LA SALLE COUNTIES UNTIL 430 PM CDT... AT 406 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES SOUTHWEST OF STREATOR...MOVING EAST AT 15 MPH. RADAR INDICATES THAT ROTATION HAS WEAKENED IN THIS STORM... HOWEVER SEVERAL REPORTS OF ROTATION HAVE BEEN RECEIVED FROM LAW ENFORCEMENT AND SPOTTERS WITH THIS STORM AND THE THREAT OF A TORNADO CONTINUES. THIS DANGEROUS STORM WILL BE NEAR... STREATOR AROUND 420 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHICAGO. && LAT...LON 4113 8891 4120 8878 4093 8883 4093 8905 TIME...MOT...LOC 2111Z 264DEG 15KT 4105 8887 $$ RATZER
322 WWUS53 KLOT 062123 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 423 PM CDT SUN MAY 6 2012 ILC099-105-062132- /O.EXP.KLOT.TO.W.0005.000000T0000Z-120506T2130Z/ LA SALLE IL-LIVINGSTON IL- 423 PM CDT SUN MAY 6 2012 ...THE TORNADO WARNING FOR NORTHWESTERN LIVINGSTON AND SOUTH CENTRAL LA SALLE COUNTIES WILL EXPIRE AT 430 PM CDT... THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR A PORTION THE AREA...AND HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHICAGO. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA UNTIL 9 PM CDT. LAT...LON 4113 8891 4120 8878 4093 8883 4093 8905 TIME...MOT...LOC 2122Z 264DEG 15KT 4105 8881 $$ RATZER
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, 3:43 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, 4:46 PM CDT | Tornado Warning | LOT | Iroquois | 44 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.