Alert archive / Illinois / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 252, NWS Lincoln, IL

September 26, 2023Morgan County, Scott County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Sep 26, 2023, 4:57 PM CDT for Morgan County, Scott County, Illinois. It was in force for 33 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 26, 2023, 4:57 PM CDT (21:57 UTC)
Expired: Sep 26, 2023, 5:30 PM CDT
In force: 33 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 105 km from the middle of the area, began a volume at 21:58 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, 10.0 hours before the alert went out and 166 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: 128 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 1483 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

611 
WUUS53 KILX 262157
SVRILX
ILC137-171-262230-
/O.NEW.KILX.SV.W.0252.230926T2157Z-230926T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
457 PM CDT Tue Sep 26 2023

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northeastern Scott County in west central Illinois...
  Northwestern Morgan County in west central Illinois...

* Until 530 PM CDT.

* At 457 PM CDT, a severe thunderstorm was located over Meredosia, or
  13 miles southwest of Beardstown, moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Meredosia around 500 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3983 9057 3984 9057 3987 9059 3988 9044
      3987 9044 3987 9037 3974 9037 3978 9060
TIME...MOT...LOC 2157Z 270DEG 24KT 3985 9058 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Barnes

1 follow-up statement

764 
WWUS53 KILX 262223
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
523 PM CDT Tue Sep 26 2023

ILC137-171-262233-
/O.EXP.KILX.SV.W.0252.000000T0000Z-230926T2230Z/
Scott-Morgan-
523 PM CDT Tue Sep 26 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SCOTT AND
NORTHWESTERN MORGAN COUNTIES WILL EXPIRE AT 530 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3983 9057 3984 9057 3987 9059 3988 9044
      3987 9044 3987 9037 3974 9037 3978 9060
TIME...MOT...LOC 2223Z 270DEG 24KT 3985 9036 

$$

Barnes

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 26, 4:38 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	22 min
Sep 26, 5:38 PM CDT	Special Weather Statement	ILX	Sangamon	52 min
Sep 26, 6:40 PM CDT	Special Weather Statement	ILX	Christian	20 min
Sep 26, 6:43 PM CDT	Special Weather Statement	ILX	Sangamon	17 min
Sep 26, 6:53 PM CDT	Severe Thunderstorm Warning	ILX	Christian	37 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2023 Every severe thunderstorm warning in 2023

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.