Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 34, NWS St. Louis, MO

April 27, 2016Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 27, 2016, 10:25 PM CDT for Adams County, Brown County, Pike County, Illinois. It was in force for 50 min. 1 report 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
Apr 27, 2016, 10:25 PM CDT (03:25 UTC)
Expired
Apr 27, 2016, 11:15 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Adams County, IL, Brown County, IL, Pike County, IL

The radar

The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 03:28 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
Apr 27, 10:25 PM CDTHAIL 1Payson, IL

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

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.4 hours before the alert went out and 204 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, Davenport, at 00:00Z on 2016-04-28Temperature 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, Davenport, at 00:00Z on 2016-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 338 square meters per square second.1939587897117Sfc1 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
595 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
338 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

130 
WUUS53 KLSX 280325
SVRLSX
ILC001-009-149-280415-
/O.NEW.KLSX.SV.W.0034.160428T0325Z-160428T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1025 PM CDT WED APR 27 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHWESTERN BROWN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 1115 PM CDT

* AT 1025 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR PAYSON...
  MOVING EAST AT 20 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...TRAINED WEATHER SPOTTERS. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  BARRY...PAYSON...BEVERLY...ADAMS...KINGSTON...LIBERTY...HULL...RICHFIELD...
  PLAINVILLE...KINDERHOOK...BAYLIS...NEW SALEM...SEEHORN...FISHHOOK AND
  KELLERVILLE.

THIS INCLUDES INTERSTATE 72 BETWEEN EXITS 10 AND 20.
 
THIS ALSO INCLUDES  SILOAM SPRINGS STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3995 9085 3970 9083 3969 9127 3985 9131
TIME...MOT...LOC 0325Z 259DEG 19KT 3977 9118 

HAIL...1.00IN
WIND...60MPH
 
$$

CARNEY
2 follow-up statements
440 
WWUS53 KLSX 280351 RRA
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1051 PM CDT WED APR 27 2016

ILC001-009-149-280415-
/O.CON.KLSX.SV.W.0034.000000T0000Z-160428T0415Z/
PIKE IL-ADAMS IL-BROWN IL-
1051 PM CDT WED APR 27 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR NORTH CENTRAL PIKE...SOUTHEASTERN ADAMS AND SOUTHWESTERN BROWN
COUNTIES IN WEST CENTRAL ILLINOIS...

AT 1051 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BEVERLY...
MOVING EAST AT 25 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. 

LOCATIONS IMPACTED INCLUDE...
BARRY...BEVERLY...KINGSTON...LIBERTY...RICHFIELD...BAYLIS...NEW SALEM...
FISHHOOK AND KELLERVILLE.

THIS ALSO INCLUDES  SILOAM SPRINGS STATE PARK.
 
THIS INCLUDES INTERSTATE 72 NEAR EXIT 20.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3995 9085 3970 9083 3969 9111 3989 9113
TIME...MOT...LOC 0351Z 262DEG 21KT 3978 9099 

HAIL...1.00IN
WIND...60MPH
 
$$

CARNEY
827 
WWUS53 KLSX 280411
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1111 PM CDT WED APR 27 2016

ILC001-009-149-280421-
/O.EXP.KLSX.SV.W.0034.000000T0000Z-160428T0415Z/
PIKE IL-ADAMS IL-BROWN IL-
1111 PM CDT WED APR 27 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL PIKE...
SOUTHEASTERN ADAMS AND SOUTHWESTERN BROWN COUNTIES IN WEST CENTRAL
ILLINOIS WILL EXPIRE AT 1115 PM CDT...
                
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 WILL BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL
AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3995 9085 3970 9083 3969 9111 3989 9113
TIME...MOT...LOC 0410Z 259DEG 19KT 3978 9099 

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:48 PM CDTSevere Thunderstorm WarningLSXAdams42 min
Apr 27, 9:15 PM CDTTornado Warning Tornado observedLSXAdams30 min
Apr 27, 9:24 PM CDTSevere Thunderstorm WarningLSXCalhoun, Jersey38 min
Apr 27, 9:45 PM CDTSevere Thunderstorm WarningLSXAdams, Brown35 min
Apr 27, 10:26 PM CDTSevere Thunderstorm WarningLSXJersey, Macoupin, Madison34 min
Apr 27, 10:34 PM CDTSevere Thunderstorm WarningLSXMacoupin, Montgomery41 min
Apr 27, 10:59 PM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair23 min

Nearby

Severe Thunderstorm Warnings in Illinois, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.