Alert archive / Illinois / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 49, NWS Lincoln, IL

May 17, 2020Lawrence County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 17, 2020, 6:11 PM CDT for Lawrence County, Illinois. It was in force for 19 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: May 17, 2020, 6:11 PM CDT (23:11 UTC)
Expired: May 17, 2020, 6:30 PM CDT
In force: 19 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lawrence County, IL

The radar

The Evansville,IN radar (KVWX), 49 km from the middle of the area, began a volume at 23:15 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
May 17, 4:18 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.2 hours before the alert went out and 185 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: 40 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

381 
WUUS53 KILX 172311
SVRILX
ILC101-172330-
/O.NEW.KILX.SV.W.0049.200517T2311Z-200517T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
611 PM CDT Sun May 17 2020

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Southeastern Lawrence County in southeastern Illinois...

* Until 630 PM CDT.

* At 611 PM CDT, a severe thunderstorm was located near St.
  Francisville, or near Vincennes, moving northeast at 35 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  St. Francisville and Billett. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3872 8752 3869 8752 3866 8760 3861 8762
      3859 8762 3859 8764 3857 8765 3857 8770
      3869 8770 3880 8751 3879 8750 3877 8751
      3876 8750 3874 8750
TIME...MOT...LOC 2311Z 243DEG 32KT 3865 8762 

HAIL...0.75IN
WIND...60MPH
 
$$

37

1 follow-up statement

511 
WWUS53 KILX 172331
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
631 PM CDT Sun May 17 2020

ILC101-172340-
/O.EXP.KILX.SV.W.0049.000000T0000Z-200517T2330Z/
Lawrence-
631 PM CDT Sun May 17 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAWRENCE COUNTY
HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southeastern Illinois.

LAT...LON 3872 8752 3869 8752 3866 8760 3861 8762
      3859 8762 3859 8764 3857 8765 3857 8770
      3869 8770 3880 8751 3879 8750 3877 8751
      3876 8750 3874 8750
TIME...MOT...LOC 2330Z 243DEG 32KT 3872 8744 

$$

37

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 9:06 PM CDT	Flash Flood Watch	ILX	Cass, Champaign, Christian, DeWitt, Douglas, Logan and 15 more	34 hr
May 17, 5:33 AM CDT	River Flood Warning	ILX	Fulton, Knox	64 hr
May 17, 5:37 AM CDT	River Flood Warning	ILX	Piatt	7 days
May 17, 10:56 AM CDT	Areal Flood Warning	ILX	Sangamon	6 hr
May 17, 11:37 AM CDT	River Flood Warning	ILX	Cass, Mason, Menard	5 days
May 17, 11:37 AM CDT	River Flood Warning	ILX	Cass, Mason	8 days
May 17, 4:09 PM CDT	Tornado Warning	ILX	Macon	17 min
May 17, 4:48 PM CDT	Special Weather Statement	ILX	Piatt	42 min
May 17, 4:54 PM CDT	Special Weather Statement	ILX	Clark, Crawford, Lawrence, Richland	51 min
May 17, 5:14 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	46 min
May 17, 5:30 PM CDT	Special Weather Statement	ILX	Champaign, Douglas	45 min
May 17, 5:50 PM CDT	Special Weather Statement	ILX	Lawrence	25 min
May 17, 6:02 PM CDT	Tornado Warning	ILX	Lawrence	28 min
May 17, 6:21 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	16 min
May 17, 6:52 PM CDT	Special Weather Statement	ILX	Vermilion	53 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2020 Every severe thunderstorm warning in 2020

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.