Alert archive / Illinois / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Lincoln, IL

March 6, 20174 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Mar 6, 2017, 11:21 PM CST for 4 counties in Illinois. It was in force for 54 min. 2 reports 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
Mar 6, 2017, 11:21 PM CST (05:21 UTC)
Expired
Mar 7, 2017, 12:15 AM CST
In force
54 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
70.0 mph

Counties Cass County, IL, Mason County, IL, Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 78 km from the middle of the area, began a volume at 05:23 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

TimeReportWhereRemark
Mar 6, 11:37 PM CSTTSTM WND DMG4 Ssw Havana, ILTREE BLOWN INTO A HOUSE IN MATANZAS BEACH.
Mar 7, 12:00 AM CSTHAIL 0.88Jacksonville, IL

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 6, 8:52 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 140 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 00:00Z on 2017-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2017-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 475 square meters per square second.1939587897Sfc1 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
4 J/kg
Mixed-layer CIN
-285 J/kg
Mixed-layer LCL
651 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
475 m²/s²
0-3 km storm-relative helicity
484 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

795 
WUUS53 KILX 070521
SVRILX
ILC017-125-137-171-070615-
/O.NEW.KILX.SV.W.0013.170307T0521Z-170307T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
1121 PM CST MON MAR 6 2017

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Scott County in west central Illinois...
  Cass County in west central Illinois...
  Central Mason County in central Illinois...
  Morgan County in west central Illinois...

* Until 1215 AM CST

* At 1120 PM CST, severe thunderstorms were located along a line
  extending from Ipava to 7 miles west of Winchester, moving east at
  65 mph.

  HAZARD...70 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Locations impacted include...
  Jacksonville, Beardstown, Havana, Virginia, Winchester, Alexander,
  Ashland, Meredosia, Bluff Springs, Bluffs, Murrayville,
  Chandlerville, Chapin, Woodson, Arenzville, Bath, Kilbourne,
  Manchester, Alsey and Naples.

This includes Interstate 72 between mile markers 42 and 76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 400 AM CST for central and
west central Illinois.

LAT...LON 3983 9057 3987 9059 3999 9051 4002 9043
      4006 9043 4012 9037 4016 9020 4019 9020
      4023 9012 4029 9008 4037 9004 4044 8991
      4044 8987 4013 8994 4014 8997 4010 9000
      3992 8999 3952 9009 3952 9058 3969 9065
TIME...MOT...LOC 0520Z 248DEG 55KT 4035 9032 3964 9060 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

Goetsch
2 follow-up statements
563 
WWUS53 KILX 070538
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1138 PM CST MON MAR 6 2017

ILC017-125-137-171-070615-
/O.CON.KILX.SV.W.0013.000000T0000Z-170307T0615Z/
Scott-Cass-Mason-Morgan-
1138 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CST
FOR SCOTT...CASS...CENTRAL MASON AND MORGAN COUNTIES...

At 1137 PM CST, severe thunderstorms were located along a line
extending from near St. David to near Jacksonville, moving east at 65
mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Jacksonville, Havana, Virginia, Winchester, Alexander, Ashland, Bluff
Springs, Bluffs, Murrayville, Chandlerville, Woodson, Chapin,
Arenzville, Bath, Kilbourne, Manchester, Alsey, Exeter, Literberry
and South Jacksonville.

This includes Interstate 72 between mile markers 44 and 76.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

A tornado watch remains in effect until 400 AM CST for central and
west central Illinois.

LAT...LON 4014 9027 4015 9026 4016 9020 4019 9020
      4023 9012 4029 9008 4037 9004 4044 8991
      4044 8987 4013 8994 4014 8997 4010 9000
      3992 8999 3952 9009 3952 9058 3966 9064
TIME...MOT...LOC 0537Z 248DEG 55KT 4045 9000 3974 9028 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

Goetsch
426 
WWUS53 KILX 070612
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1212 AM CST TUE MAR 7 2017

ILC017-125-137-171-070622-
/O.EXP.KILX.SV.W.0013.000000T0000Z-170307T0615Z/
Scott-Cass-Mason-Morgan-
1212 AM CST TUE MAR 7 2017

...THE SEVERE THUNDERSTORM WARNING FOR SCOTT...CASS...CENTRAL MASON
AND MORGAN COUNTIES WILL EXPIRE AT 1215 AM CST...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 400 AM CST for central and
west central Illinois.

LAT...LON 4014 9027 4015 9026 4016 9020 4019 9020
      4023 9012 4029 9008 4037 9004 4044 8991
      4044 8987 4013 8994 4014 8997 4010 9000
      3992 8999 3952 9009 3952 9058 3966 9064
TIME...MOT...LOC 0612Z 248DEG 55KT 4064 8937 3993 8966 

$$

Goetsch

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 10:32 PM CSTSevere Thunderstorm WarningILXCass, Fulton, Knox, Mason, Peoria, Schuyler and 1 more28 min
Mar 6, 10:58 PM CSTSevere Thunderstorm WarningILXFulton, Knox, Peoria, Schuyler, Stark62 min
Mar 6, 10:59 PM CSTTornado WarningILXKnox19 min
Mar 6, 11:03 PM CSTTornado WarningILXKnox42 min
Mar 6, 11:08 PM CSTTornado WarningILXFulton, Knox37 min
Mar 6, 11:49 PM CSTSevere Thunderstorm WarningILXCass, Fulton, Logan, Mason, Menard, Peoria and 2 more56 min
Mar 6, 11:54 PM CSTSevere Thunderstorm WarningILXMarshall, Peoria, Stark, Woodford38 min
Mar 7, 12:03 AM CSTTornado WarningILXMcLean, Tazewell27 min
Mar 7, 12:05 AM CSTSevere Thunderstorm WarningILXLogan, Menard, Morgan, Sangamon25 min
Mar 7, 12:21 AM CSTSevere Thunderstorm WarningILXDeWitt, Logan, McLean, Marshall, Woodford54 min
Mar 7, 12:30 AM CSTSevere Thunderstorm WarningILXChristian, DeWitt, Logan, Macon, Morgan, Sangamon60 min
Mar 7, 1:16 AM CSTSevere Thunderstorm WarningILXChristian, Macon, Moultrie, Piatt, Shelby44 min
Mar 7, 1:46 AM CSTSevere Thunderstorm WarningILXChampaign, Vermilion29 min
Mar 7, 1:57 AM CSTSevere Thunderstorm WarningILXColes, Cumberland, Douglas, Shelby48 min
Mar 7, 2:17 AM CSTSevere Thunderstorm WarningILXChampaign, Vermilion28 min
Mar 7, 2:25 AM CSTSevere Thunderstorm WarningILXClark, Coles, Edgar35 min
Mar 7, 2:37 AM CSTSpecial Weather StatementILXCrawford, Jasper23 min
Mar 7, 3:14 AM CSTSpecial Weather StatementILXLawrence46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2017Every severe thunderstorm warning in 2017

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.