Alert archive / Illinois / Tornado Warnings in 2012
Tornado Warning 23, NWS Lincoln, IL
NWS Lincoln, IL issued this tornado warning at Sep 1, 2012, 2:50 PM CDT for Mason County, Menard County, Sangamon County, Illinois. It was in force for 40 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
- Sep 1, 2012, 2:50 PM CDT (19:50 UTC)
- Expired
- Sep 1, 2012, 3:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Lincoln, IL
- Area
- Storm-based polygon
Counties Mason County, IL, Menard County, IL, Sangamon County, IL
The radar
The Lincoln radar (KILX), 29 km from the middle of the area, began a volume at 19:51 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 |
|---|---|---|---|
| Sep 1, 12:46 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.8 hours before the alert went out and 92 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
- 443 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 457 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
286
WFUS53 KILX 011950
TORILX
ILC125-129-167-012030-
/O.NEW.KILX.TO.W.0023.120901T1950Z-120901T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
250 PM CDT SAT SEP 1 2012
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL MASON COUNTY IN CENTRAL ILLINOIS...
MENARD COUNTY IN CENTRAL ILLINOIS...
NORTH CENTRAL SANGAMON COUNTY IN CENTRAL ILLINOIS...
* UNTIL 330 PM CDT.
* AT 247 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR ATHENS...OR 10 MILES NORTH OF SPRINGFIELD...
AND MOVING NORTH AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
MASON CITY...ATHENS...PETERSBURG...GREENVIEW...EASTON...SAN JOSE...
FANCY PRAIRIE...LINCOLNS NEW SALEM...SWEETWATER AND POPLAR CITY.
THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 101 AND 105.
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 4031 8960 4009 8960 4009 8959 3984 8958
3981 8974 4025 9001
TIME...MOT...LOC 1950Z 164DEG 28KT 3994 8970
$$
BARNES2 follow-up statements
386
WWUS53 KILX 012008
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
308 PM CDT SAT SEP 1 2012
ILC125-129-167-012030-
/O.CON.KILX.TO.W.0023.000000T0000Z-120901T2030Z/
MASON IL-MENARD IL-SANGAMON IL-
308 PM CDT SAT SEP 1 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL SANGAMON...
MENARD AND CENTRAL MASON COUNTIES UNTIL 330 PM CDT...
AT 305 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR ATHENS...OR 14 MILES SOUTH OF MASON CITY...
MOVING NORTH AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MASON CITY...PETERSBURG...GREENVIEW...EASTON...SAN JOSE...
SWEETWATER AND POPLAR CITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4031 8960 4009 8960 4009 8959 3984 8958
3981 8974 4025 9001
TIME...MOT...LOC 2007Z 164DEG 28KT 4001 8972
$$
BARNES548
WWUS53 KILX 012022
SVSILX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
322 PM CDT SAT SEP 1 2012
ILC125-129-167-012033-
/O.EXP.KILX.TO.W.0023.000000T0000Z-120901T2030Z/
MASON IL-MENARD IL-SANGAMON IL-
322 PM CDT SAT SEP 1 2012
...THE TORNADO WARNING FOR NORTH CENTRAL SANGAMON...MENARD AND
CENTRAL MASON COUNTIES WILL EXPIRE AT 330 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.
LAT...LON 4031 8960 4009 8960 4009 8959 3984 8958
3981 8974 4025 9001
TIME...MOT...LOC 2023Z 164DEG 28KT 4013 8977
$$
BARNESThe office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 11:48 AM CDT | Tornado Warning | ILX | Marshall, Woodford | 42 min |
| Sep 1, 12:01 PM CDT | Tornado Warning | ILX | Marshall, Peoria, Woodford | 44 min |
| Sep 1, 12:07 PM CDT | Tornado Warning | ILX | Logan, Tazewell | 22 min |
| Sep 1, 12:26 PM CDT | Tornado Warning | ILX | Marshall | 49 min |
| Sep 1, 12:43 PM CDT | Tornado Warning | ILX | Marshall, Stark | 47 min |
| Sep 1, 2:41 PM CDT | Tornado Warning | ILX | Christian, Logan, Sangamon | 49 min |
| Sep 1, 4:24 PM CDT | Flash Flood Warning | ILX | Effingham | 6 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.