Alert archive / Illinois / Tornado Warnings in 2013

Tornado Warning 4, NWS Lincoln, IL

May 27, 2013Sangamon County, Illinois

NWS Lincoln, IL issued this tornado warning at May 27, 2013, 2:59 PM CDT for Sangamon County, Illinois. It was in force for 31 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: May 27, 2013, 2:59 PM CDT (19:59 UTC)
Expired: May 27, 2013, 3:30 PM CDT
In force: 31 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 36 km from the middle of the area, began a volume at 20:00 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 27, 3:00 PM CDT	TSTM WND DMG	1 S Riverton, IL	REPORT OF 48 MOBILE HOMES DAMAGED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.0 hours before the alert went out and 78 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 69 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 493 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

388 
WFUS53 KILX 271959
TORILX
ILC167-272030-
/O.NEW.KILX.TO.W.0004.130527T1959Z-130527T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
259 PM CDT MON MAY 27 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 330 PM CDT

* AT 255 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR RIVERTON...AND MOVING NORTHEAST AT 30 MPH.

  HAZARD...DEVELOPING TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
           SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
           OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
           EXTENSIVE TREE DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  MECHANICSBURG...SPAULDING...DAWSON AND BUFFALO.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 94 AND 103.

THIS INCLUDES INTERSTATE 72 BETWEEN MILE MARKERS 100 AND 123.

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 3994 8945 3993 8942 3983 8923 3983 8925
      3982 8926 3976 8942 3975 8943 3970 8958
      3986 8969
TIME...MOT...LOC 1959Z 242DEG 27KT 3983 8953

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

HJS

1 follow-up statement

124 
WWUS53 KILX 272018
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
318 PM CDT MON MAY 27 2013

ILC167-272028-
/O.CAN.KILX.TO.W.0004.000000T0000Z-130527T2030Z/
SANGAMON IL-
318 PM CDT MON MAY 27 2013

...THE TORNADO WARNING FOR NORTHEASTERN SANGAMON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

LAT...LON 3994 8945 3993 8942 3983 8923 3983 8925
      3982 8926 3976 8942 3975 8943 3970 8958
      3986 8969
TIME...MOT...LOC 2018Z 242DEG 27KT 3990 8937

$$

HJS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 7:36 PM CDT	Flash Flood Warning	ILX	Knox	9 hr
May 26, 7:49 PM CDT	Flash Flood Warning	ILX	Marshall, Peoria, Stark	9 hr
May 26, 10:18 PM CDT	Flash Flood Warning	ILX	Marshall, Peoria, Tazewell, Woodford	9 hr
May 27, 2:56 AM CDT	Flash Flood Warning	ILX	Fulton	6 hr
May 27, 3:26 AM CDT	Areal Flood Advisory	ILX	Cass, Morgan, Schuyler	6 hr
May 27, 4:25 AM CDT	Areal Flood Warning	ILX	Knox	6 hr
May 27, 4:57 AM CDT	Flash Flood Warning	ILX	Peoria, Stark	6 hr
May 27, 7:28 AM CDT	Areal Flood Warning	ILX	Peoria, Woodford	6 hr
May 27, 10:57 AM CDT	Areal Flood Warning	ILX	Stark	5 hr
May 27, 1:54 PM CDT	Special Weather Statement	ILX	Morgan, Sangamon	51 min
May 27, 1:59 PM CDT	Special Weather Statement	ILX	Logan, Menard	46 min
May 27, 2:41 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Sangamon	49 min
May 27, 3:10 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Sangamon	50 min
May 27, 3:30 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, Macon	30 min
May 27, 3:32 PM CDT	Flash Flood Warning	ILX	Sangamon	3 hr
May 27, 3:40 PM CDT	Special Weather Statement	ILX	Moultrie	35 min

Nearby

Tornado Warnings in Illinois, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.