Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 4, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at May 6, 2012, 3:26 PM CDT for Iroquois County, Illinois. It was in force for 64 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 6, 2012, 3:26 PM CDT (20:26 UTC)
- Expired
- May 6, 2012, 4:30 PM CDT
- In force
- 64 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
County Iroquois County, IL
The radar
The Chicago radar (KLOT), 84 km from the middle of the area, began a volume at 20:28 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 | 2 Nne Ashkum, IL | SPOTTER REPORTED A LOW ROTATING WALL CLOUD WITH A POSSIBLE FUNNEL. |
| May 6, 3:50 PM CDT | TORNADO | Ashkum, IL | SOUTH OF TOWN ALONG I-57 NEAR MILE MARKER 290. |
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, 8.4 hours before the alert went out and 98 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.
998 WFUS53 KLOT 062026 TORLOT ILC075-062130- /O.NEW.KLOT.TO.W.0004.120506T2026Z-120506T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 326 PM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... CENTRAL IROQUOIS COUNTY... * UNTIL 430 PM CDT * AT 323 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES WEST OF ASHKUM...OR 12 MILES NORTHEAST OF PIPER CITY...AND MOVING SOUTHEAST AT 10 MPH. GOLF BALL SIZE HAIL IS ALSO EXPECTED WITH THIS DANGEROUS STORM. * THIS TORNADIC STORM WILL BE NEAR... CLIFTON AROUND 340 PM. ASHKUM AROUND 345 PM. LAT...LON 4087 8772 4068 8796 4089 8812 4097 8804 TIME...MOT...LOC 2025Z 307DEG 10KT 4089 8804 $$ BMD
7 follow-up statements
161 WWUS53 KLOT 062039 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 339 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 339 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 337 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ASHKUM...OR 12 MILES NORTHEAST OF PIPER CITY...MOVING SOUTHEAST AT 10 MPH. IN ADDITION...AT 235 PM...BASEBALL SIZE HAIL WAS REPORTED IN WEST OF CLIFTON WITH THIS STORM. THIS DANGEROUS STORM WILL BE NEAR... ASHKUM AROUND 345 PM CDT. GILMAN AROUND 400 PM CDT. LAT...LON 4089 8808 4093 8803 4087 8772 4068 8796 TIME...MOT...LOC 2039Z 307DEG 10KT 4087 8800 $$ BMD
951 WWUS53 KLOT 062048 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 348 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 348 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ASHKUM...OR 13 MILES NORTHEAST OF PIPER CITY...MOVING SOUTHEAST AT 10 MPH. THIS DANGEROUS STORM ALSO HAS A HISTORY OF PRODUCING BASEBALL SIZE HAIL. THIS DANGEROUS STORM WILL BE NEAR... GILMAN AROUND 400 PM CDT. LAT...LON 4086 8805 4092 8800 4087 8772 4068 8796 TIME...MOT...LOC 2047Z 307DEG 10KT 4086 8798 $$ BMD
045 WWUS53 KLOT 062052 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 352 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 352 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 347 PM CDT...THE PUBLIC REPORTED A TORNADO. THIS TORNADO WAS LOCATED JUST SOUTH OF ASHKUM...OR 13 MILES NORTHEAST OF PIPER CITY...MOVING SUTHEAST AT 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4086 8805 4092 8800 4087 8772 4068 8796 TIME...MOT...LOC 2051Z 307DEG 10KT 4085 8797 $$ BMD
178 WWUS53 KLOT 062056 CCA SVSLOT SEVERE WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 356 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 356 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 347 PM CDT...THE PUBLIC REPORTED A TORNADO. THIS TORNADO WAS LOCATED JUST SOUTH OF ASHKUM...OR 13 MILES NORTHEAST OF PIPER CITY...MOVING SOUTHEAST AT 15 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4086 8805 4092 8800 4087 8772 4068 8796 TIME...MOT...LOC 2051Z 307DEG 10KT 4085 8797 $$ BMD
904 WWUS53 KLOT 062106 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 406 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 406 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 401 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED SOUTH OF ASHKUM...OR 12 MILES WEST OF WATSEKA...MOVING SOUTHEAST AT 15 MPH. LOCATIONS IMPACTED INCLUDE... CRESCENT CITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN CHICAGO. && LAT...LON 4081 8803 4089 8792 4087 8772 4068 8796 TIME...MOT...LOC 2106Z 307DEG 10KT 4082 8793 $$ BMD
933 WWUS53 KLOT 062118 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 418 PM CDT SUN MAY 6 2012 ILC075-062130- /O.CON.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 418 PM CDT SUN MAY 6 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL IROQUOIS COUNTY UNTIL 430 PM CDT... AT 415 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR GILMAN...OR 11 MILES WEST OF WATSEKA...MOVING EAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... CRESCENT CITY. 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 4077 8801 4083 8794 4082 8779 4068 8796 TIME...MOT...LOC 2118Z 288DEG 16KT 4077 8792 $$ BMD
415 WWUS53 KLOT 062129 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 429 PM CDT SUN MAY 6 2012 ILC075-062138- /O.EXP.KLOT.TO.W.0004.000000T0000Z-120506T2130Z/ IROQUOIS IL- 429 PM CDT SUN MAY 6 2012 ...THE TORNADO WARNING FOR CENTRAL IROQUOIS COUNTY WILL EXPIRE AT 430 PM CDT... NICKEL SIZE HAIL...GUSTY WINDS AND VERY HEAVY RAIN ARE STILL LIKELY WITH THIS THUNDERSTORM. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT. LAT...LON 4077 8801 4083 8794 4082 8779 4068 8796 TIME...MOT...LOC 2128Z 288DEG 16KT 4076 8786 $$ 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, 3:31 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, 4:46 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.