Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 13, NWS Lincoln, IL

April 25, 2007Macon County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 25, 2007, 5:55 PM CDT for Macon County, Illinois. It was in force for 35 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
Apr 25, 2007, 5:55 PM CDT (22:55 UTC)
Expired
Apr 25, 2007, 6:30 PM CDT
In force
35 min
Issued by
NWS Lincoln, IL
Area
Counties, with a storm outline in the text

County Macon County, IL

The radar

The Lincoln radar (KILX), 53 km from the middle of the area, began a volume at 22:56 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 63 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2007-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2007-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KILX 252255
TORILX
ILC115-252330-
/O.NEW.KILX.TO.W.0013.070425T2255Z-070425T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
555 PM CDT WED APR 25 2007

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN MACON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 630 PM CDT.

* AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  SOUTHWEST OF BLUE MOUND...OR ABOUT 10 MILES NORTH OF TAYLORVILLE...
  MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLUE MOUND...
  MACON...
  BOODY...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL EMERGENCY
MANAGER...OR THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3965 8915 3966 8893 3980 8900 3981 8916

$$

BARKER
2 follow-up statements
000 
WWUS53 KILX 252318
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
618 PM CDT WED APR 25 2007

ILC115-252330-
/O.CON.KILX.TO.W.0013.000000T0000Z-070425T2330Z/
MACON-
618 PM CDT WED APR 25 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
SOUTHWESTERN MACON COUNTY...

AT 613 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED NEAR BLUE
MOUND...OR ABOUT 14 MILES SOUTHWEST OF DECATUR...MOVING NORTHEAST AT 15 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  BOODY...
  MACON...
  BLUE MOUND...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3965 8915 3966 8893 3980 8900 3981 8916

$$

BARKER
000 
WWUS53 KILX 252330
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
630 PM CDT WED APR 25 2007

ILC115-252340-
/O.EXP.KILX.TO.W.0013.000000T0000Z-070425T2330Z/
MACON-
630 PM CDT WED APR 25 2007

...THE TORNADO WARNING FOR SOUTHWESTERN MACON COUNTY EXPIRES AT 630
PM CDT...

AT 626 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD WEAKENED...THUS
THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3965 8915 3966 8893 3980 8900 3981 8916

$$

BARKER

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 2:57 PM CDTTornado WarningILXChristian, Macon, Moultrie, Piatt, Sangamon, Shelby48 min
Apr 25, 3:42 PM CDTTornado WarningILXColes, Douglas, Moultrie33 min
Apr 25, 4:15 PM CDTTornado WarningILXColes, Douglas, Edgar30 min
Apr 25, 4:24 PM CDTTornado WarningILXChristian36 min
Apr 25, 4:44 PM CDTTornado WarningILXColes, Douglas31 min
Apr 25, 4:56 PM CDTTornado WarningILXChristian34 min
Apr 25, 5:30 PM CDTTornado WarningILXChristian30 min

Nearby

Tornado Warnings in Illinois, 2007Every tornado warning in 2007Tornadoes in 2007

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.