Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 53, NWS Lincoln, IL

May 3, 2012Marshall County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 3, 2012, 7:36 PM CDT for Marshall County, 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: May 3, 2012, 7:36 PM CDT (00:36 UTC)
Expired: May 3, 2012, 8:30 PM CDT
In force: 54 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Marshall County, IL

The radar

The Lincoln radar (KILX), 103 km from the middle of the area, began a volume at 00:39 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 3, 7:38 PM CDT	HAIL 0.88	Sparland, IL
May 3, 7:40 PM CDT	HAIL 1	2 W Lacon, IL	ON RT. 29. TIME ESTIMATED. RELAYED BY WFO DVN.

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.

Issued	Product	Office	Lasted
May 3, 4:20 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.6 hours before the alert went out and 117 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: 1905 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

983 
WUUS53 KILX 040036
SVRILX
ILC123-040130-
/O.NEW.KILX.SV.W.0053.120504T0036Z-120504T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
736 PM CDT THU MAY 3 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARSHALL COUNTY IN CENTRAL ILLINOIS...

* UNTIL 830 PM CDT.

* AT 735 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LACON...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HENRY...VARNA...TOLUCA...WENONA...LA ROSE AND LAKE WILDWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR NORTHERN ILLINOIS.

LAT...LON 4112 8932 4111 8933 4111 8905 4110 8904
      4098 8904 4094 8938 4105 8951 4115 8933
TIME...MOT...LOC 0037Z 247DEG 16KT 4102 8937
WIND...HAIL 60MPH 1.00IN

$$

BARNES

1 follow-up statement

237 
WWUS53 KILX 040103
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
803 PM CDT THU MAY 3 2012

ILC123-040130-
/O.CON.KILX.SV.W.0053.000000T0000Z-120504T0130Z/
MARSHALL IL-
803 PM CDT THU MAY 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MARSHALL
COUNTY UNTIL 830 PM CDT...

AT 759 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
EAST OF LACON...MOVING NORTHEAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  VARNA...TOLUCA...WENONA...LA ROSE AND LAKE WILDWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4112 8932 4111 8933 4111 8905 4110 8904
      4098 8904 4094 8938 4105 8951 4115 8933
TIME...MOT...LOC 0104Z 247DEG 15KT 4101 8929
WIND...HAIL 60MPH 1.00IN

$$

BARNES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:26 PM CDT	Special Weather Statement	ILX	Marshall	64 min
May 3, 8:24 PM CDT	Severe Thunderstorm Warning	ILX	Marshall	51 min
May 3, 8:39 PM CDT	Flash Flood Warning	ILX	Marshall	6 hr
May 3, 11:16 PM CDT	Severe Thunderstorm Warning	ILX	Knox	44 min
May 3, 11:29 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Stark	61 min
May 4, 12:07 AM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell, Woodford	53 min
May 4, 12:29 AM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria	46 min
May 4, 12:52 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Woodford	35 min
May 4, 2:29 AM CDT	Flash Flood Warning	ILX	Marshall	6 hr
May 4, 8:47 AM CDT	Severe Thunderstorm Warning	ILX	Clay, Jasper, Richland	43 min
May 4, 1:22 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	38 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2012 Every severe thunderstorm warning in 2012

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.