Alert archive / Illinois / Tornado Warnings in 2011
Tornado Warning 4, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at May 7, 2011, 4:06 PM CDT for Ford County, Iroquois County, Illinois. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 7, 2011, 4:06 PM CDT (21:06 UTC)
- Expired
- May 7, 2011, 4:45 PM CDT
- In force
- 39 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
Counties Ford County, IL, Iroquois County, IL
The radar
The Lincoln radar (KILX), 108 km from the middle of the area, began a volume at 21:08 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.
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 7, 2:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 52 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
954
WFUS53 KLOT 072106
TORLOT
ILC053-075-072145-
/O.NEW.KLOT.TO.W.0004.110507T2106Z-110507T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
406 PM CDT SAT MAY 7 2011
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN FORD COUNTY...
SOUTHWESTERN IROQUOIS COUNTY...
* UNTIL 445 PM CDT
* AT 404 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PAXTON...AND MOVING SOUTHEAST AT 40 MPH.
* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF SOUTHEASTERN FORD COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4042 8827 4056 8815 4048 8793 4040 8793
4040 8822
TIME...MOT...LOC 2106Z 305DEG 34KT 4045 8809
$$
RODRIGUEZ3 follow-up statements
489
WWUS53 KLOT 072119
SVSLOT
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
419 PM CDT SAT MAY 7 2011
ILC053-075-072145-
/O.CON.KLOT.TO.W.0004.000000T0000Z-110507T2145Z/
IROQUOIS IL-FORD IL-
419 PM CDT SAT MAY 7 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN FORD AND
SOUTHWESTERN IROQUOIS COUNTIES UNTIL 445 PM CDT...
AT 415 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PAXTON...MOVING EAST AT 25 MPH.
IN ADDITION...A WEATHER SPOTTER NEAR PAXTON IS REPORTING ROTATION
OVER THE PAXTON AREA.
THIS TORNADO WILL AFFECT PAXTON NOW!
MAINLY RURAL AREAS EAST OF PAXTON...OVER SOUTHEASTERN FORD COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4042 8827 4056 8815 4048 8793 4040 8793
4040 8822
TIME...MOT...LOC 2117Z 136DEG 21KT 4047 8810
$$
MERZLOCK629
WWUS53 KLOT 072136
SVSLOT
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
436 PM CDT SAT MAY 7 2011
ILC075-072144-
/O.CAN.KLOT.TO.W.0004.000000T0000Z-110507T2145Z/
IROQUOIS IL-
436 PM CDT SAT MAY 7 2011
...THE TORNADO WARNING FOR SOUTHWESTERN IROQUOIS COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT THE WARNED AREA.
LAT...LON 4040 8820 4043 8817 4049 8813 4048 8793
4040 8793
TIME...MOT...LOC 2134Z 309DEG 147KT 4030 8781
$$
ILC053-072145-
/O.CON.KLOT.TO.W.0004.000000T0000Z-110507T2145Z/
FORD IL-
436 PM CDT SAT MAY 7 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN FORD COUNTY
UNTIL 445 PM CDT...
AT 430 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 6 MILES
SOUTHEAST OF PAXTON...MOVING SOUTHEAST AT 25 MPH.
THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF SOUTHEASTERN FORD
COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4040 8820 4043 8817 4049 8813 4048 8793
4040 8793
TIME...MOT...LOC 2134Z 309DEG 147KT 4030 8781
$$
MERZLOCK431
WWUS53 KLOT 072145
SVSLOT
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
445 PM CDT SAT MAY 7 2011
ILC053-072155-
/O.EXP.KLOT.TO.W.0004.000000T0000Z-110507T2145Z/
FORD IL-
445 PM CDT SAT MAY 7 2011
...THE TORNADO WARNING FOR SOUTHEASTERN FORD COUNTY HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HASMOVED OUT OF THE WARNED AREA.
LAT...LON 4040 8820 4043 8817 4049 8813 4048 8793
4040 8793
TIME...MOT...LOC 2145Z 309DEG 147KT 3999 8738
$$The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 3:28 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 32 min |
| May 7, 3:49 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 41 min |
| May 7, 4:32 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 58 min |
| May 7, 5:33 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 33 min |
Nearby
Tornado Warnings in Illinois, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.