Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 8, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Jun 29, 2012, 8:13 PM CDT for Lee County, Ogle County, Illinois. It was in force for 32 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
- Jun 29, 2012, 8:13 PM CDT (01:13 UTC)
- Expired
- Jun 29, 2012, 8:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
Counties Lee County, IL, Ogle County, IL
The radar
The Chicago radar (KLOT), 105 km from the middle of the area, began a volume at 01:15 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 |
|---|---|---|---|
| Jun 29, 8:15 PM CDT | TSTM WND DMG | Franklin Grove, IL | POWER LINES DOWN IN TOWN. RELAYED BY BROADCAST MEDIA. TIME ESTIMATED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 102 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
- 2804 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1629 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
375 WFUS53 KLOT 300113 TORLOT ILC103-141-300145- /O.NEW.KLOT.TO.W.0008.120630T0113Z-120630T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 813 PM CDT FRI JUN 29 2012 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * TORNADO WARNING FOR... WESTERN LEE COUNTY... SOUTH CENTRAL OGLE COUNTY... * UNTIL 845 PM CDT * AT 809 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR DIXON...AND MOVING EAST AT 35 MPH. * THIS TORNADIC STORM WILL BE NEAR... FRANKLIN GROVE AROUND 825 PM. ASHTON AROUND 835 PM. OTHER LOCATIONS IMPACTED... LEE COUNTY FAIRGROUNDS... I-88 BETWEEN MILE MARKERS 51 AND 72. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A VEHICLE OR OUTDOORS... MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4193 8911 4162 8923 4183 8958 4196 8951 TIME...MOT...LOC 0114Z 288DEG 30KT 4186 8945 $$ BIRK
3 follow-up statements
082 WWUS53 KLOT 300122 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 822 PM CDT FRI JUN 29 2012 ILC103-141-300145- /O.CON.KLOT.TO.W.0008.000000T0000Z-120630T0145Z/ OGLE IL-LEE IL- 822 PM CDT FRI JUN 29 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL LEE AND SOUTH CENTRAL OGLE COUNTIES UNTIL 845 PM CDT... AT 818 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR FRANKLIN GROVE...OR 5 MILES SOUTHEAST OF DIXON...MOVING SOUTHEAST AT 40 MPH. THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF CENTRAL LEE AND SOUTH CENTRAL OGLE COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW. && LAT...LON 4193 8942 4193 8911 4162 8923 4179 8951 TIME...MOT...LOC 0122Z 296DEG 35KT 4180 8934 $$ BIRK
247 WWUS53 KLOT 300132 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 832 PM CDT FRI JUN 29 2012 ILC103-141-300145- /O.CON.KLOT.TO.W.0008.000000T0000Z-120630T0145Z/ OGLE IL-LEE IL- 832 PM CDT FRI JUN 29 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL LEE AND SOUTH CENTRAL OGLE COUNTIES UNTIL 845 PM CDT... AT 831 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR FRANKLIN GROVE...OR 11 MILES NORTHEAST OF WALTON...MOVING EAST AT 30 MPH. THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF CENTRAL LEE AND SOUTH CENTRAL OGLE COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW. && LAT...LON 4171 8936 4192 8929 4193 8911 4162 8923 TIME...MOT...LOC 0132Z 278DEG 26KT 4181 8926 $$ BIRK
281 WWUS53 KLOT 300144 SVSLOT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 844 PM CDT FRI JUN 29 2012 ILC103-141-300152- /O.EXP.KLOT.TO.W.0008.000000T0000Z-120630T0145Z/ OGLE IL-LEE IL- 844 PM CDT FRI JUN 29 2012 ...THE TORNADO WARNING FOR CENTRAL LEE AND SOUTH CENTRAL OGLE COUNTIES WILL EXPIRE AT 845 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LEE AND SOUTHEASTERN OGLE COUNTIES UNTIL 930 PM. LAT...LON 4171 8936 4192 8929 4193 8911 4162 8923 TIME...MOT...LOC 0142Z 278DEG 26KT 4164 8920 $$ BIRK
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:36 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 54 min |
| Jun 29, 8:08 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee, Ogle | 82 min |
| Jun 29, 9:06 PM CDT | Special Weather Statement | LOT | Grundy, Kendall | 39 min |
| Jun 29, 9:14 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, DuPage, Grundy, Kane, Kendall, LaSalle and 1 more | 61 min |
| Jun 29, 9:40 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kankakee, Will | 65 min |
| Jun 29, 9:52 PM CDT | Special Marine Warning | LOT | 83 min | |
| Jun 29, 10:19 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 56 min |
| Jun 29, 10:48 PM CDT | Special Weather Statement | LOT | Kendall | 27 min |
| Jun 29, 10:58 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, Will | 47 min |
| Jun 29, 10:59 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Livingston, Will | 46 min |
| Jun 29, 11:24 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Iroquois, Kankakee, Will | 81 min |
| Jun 30, 12:00 AM CDT | Special Marine Warning | LOT | 60 min | |
| Jun 30, 2:25 AM CDT | Special Weather Statement | LOT | Iroquois | 35 min |
| Jun 30, 3:05 AM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 55 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.