Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 39, NWS St. Louis, MO

April 30, 2016Lincoln County, Missouri; Calhoun County, Jersey County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 30, 2016, 5:08 PM CDT for Lincoln County, Missouri; Calhoun County, Jersey County, Illinois. It was in force for 17 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
Apr 30, 2016, 5:08 PM CDT (22:08 UTC)
Expired
Apr 30, 2016, 5:25 PM CDT
In force
17 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Calhoun County, IL, Jersey County, IL, Lincoln County, MO

The radar

The St Louis radar (KLSX), 42 km from the middle of the area, began a volume at 22:07 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.

IssuedProductOfficeLasted
Apr 30, 3:59 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.1 hours before the alert went out and 210 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 12:00Z on 2016-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2016-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 217 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
217 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

453 
WUUS53 KLSX 302208
SVRLSX
ILC013-083-MOC113-302245-
/O.NEW.KLSX.SV.W.0039.160430T2208Z-160430T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
508 PM CDT SAT APR 30 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN JERSEY COUNTY IN SOUTHWESTERN ILLINOIS...
  SOUTHEASTERN CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS...
  EAST CENTRAL LINCOLN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 545 PM CDT

* AT 507 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WINFIELD...
  MOVING EAST AT 25 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* LOCATIONS IMPACTED INCLUDE...
  WINFIELD...FIELDON...BATCHTOWN...FOLEY...MEPPEN...BEECHVILLE AND
  NUTWOOD.

THIS ALSO INCLUDES  PERE MARQUETTE STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3897 9046 3896 9084 3910 9087 3914 9062
      3912 9060 3914 9059 3916 9050
TIME...MOT...LOC 2207Z 263DEG 21KT 3907 9072 

HAIL...1.00IN
WIND...<50MPH
 
$$

TILLY
1 follow-up statement
224 
WWUS53 KLSX 302225
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
525 PM CDT SAT APR 30 2016

ILC013-083-MOC113-302235-
/O.CAN.KLSX.SV.W.0039.000000T0000Z-160430T2245Z/
JERSEY IL-CALHOUN IL-LINCOLN MO-
525 PM CDT SAT APR 30 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JERSEY...
SOUTHEASTERN CALHOUN AND EAST CENTRAL LINCOLN COUNTIES IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER SMALL HAIL IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHWESTERN ILLINOIS...AND EAST CENTRAL MISSOURI.

LAT...LON 3897 9046 3896 9084 3910 9087 3914 9062
      3912 9060 3914 9059 3916 9050
TIME...MOT...LOC 2220Z 263DEG 21KT 3908 9058 

$$

TILLY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 10:21 AM CDTRiver Flood WarningLSXFranklin, Warren3 days
Apr 30, 10:21 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis3 days
Apr 30, 5:49 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles41 min
Apr 30, 6:37 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis38 min
Apr 30, 6:38 PM CDTSevere Thunderstorm WarningLSXMarion52 min
Apr 30, 6:41 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis, City of Saint Louis49 min
Apr 30, 6:48 PM CDTSevere Thunderstorm WarningLSXFranklin, Lincoln, Saint Charles, Saint Louis, Warren42 min
Apr 30, 4:53 PM CDTSevere Thunderstorm WarningLSXAdams, Pike52 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2016Severe Thunderstorm Warnings in Missouri, 2016Every severe thunderstorm warning in 2016

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.