Alert archive / Illinois / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 73, NWS St. Louis, MO

April 28, 20144 counties in Illinois; Lincoln County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 28, 2014, 3:28 PM CDT for 4 counties in Illinois; Lincoln County, Missouri. It was in force for 47 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 28, 2014, 3:28 PM CDT (20:28 UTC)
Expired: Apr 28, 2014, 4:15 PM CDT
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The St Louis radar (KLSX), 54 km from the middle of the area, began a volume at 20:28 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 1:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 200 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 719 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

559 
WUUS53 KLSX 282028
SVRLSX
ILC013-061-083-149-MOC113-282115-
/O.NEW.KLSX.SV.W.0073.140428T2028Z-140428T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
328 PM CDT MON APR 28 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
  GREENE COUNTY IN SOUTHWEST ILLINOIS...
  WESTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS...
  SOUTHEASTERN PIKE COUNTY IN WEST CENTRAL ILLINOIS...
  EASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 415 PM CDT

* AT 323 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 11 MILES NORTHEAST OF BELLEVIEW TO HARDIN...AND
  MOVING NORTHEAST AT 40 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...
  JERSEYVILLE...WHITE HALL...OLD KANE...CARROLLTON...ROODHOUSE...
  KEMPER...GREENFIELD...ATHENSVILLE...ELDRED...HILLVIEW...HAYPRESS...
  WALKERSVILLE...WOODY...PATTERSON...KANE...BELLTOWN...BARROW...
  BERDAN...ROCKBRIDGE AND WRIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS 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.

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

&&

LAT...LON 3922 9015 3892 9064 3894 9067 3892 9070
      3893 9077 3922 9074 3923 9072 3926 9073
      3953 9071 3952 9016
TIME...MOT...LOC 2028Z 230DEG 34KT 3950 9061 3920 9062

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

$$

BRITT

2 follow-up statements

687 
WWUS53 KLSX 282039
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
339 PM CDT MON APR 28 2014

ILC149-MOC113-282048-
/O.CAN.KLSX.SV.W.0073.000000T0000Z-140428T2115Z/
PIKE IL-LINCOLN MO-
339 PM CDT MON APR 28 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PIKE COUNTY IN
WEST CENTRAL ILLINOIS...AND EASTERN LINCOLN COUNTY IN EAST CENTRAL
MISSOURI IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3952 9016 3922 9015 3899 9052 3898 9055
      3904 9064 3921 9072 3940 9071 3940 9061
      3947 9061 3948 9059 3953 9058
TIME...MOT...LOC 2038Z 235DEG 44KT 3927 9048

$$

ILC013-061-083-282115-
/O.CON.KLSX.SV.W.0073.000000T0000Z-140428T2115Z/
JERSEY IL-CALHOUN IL-GREENE IL-
339 PM CDT MON APR 28 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR GREENE...
CALHOUN AND NORTHWESTERN JERSEY COUNTIES UNTIL 415 PM CDT...

AT 336 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES SOUTHWEST
OF CARROLLTON...AND MOVING NORTHEAST AT 50 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...
WHITE HALL...OLD KANE...CARROLLTON...KEMPER...ROODHOUSE...
GREENFIELD...ATHENSVILLE...HAYPRESS...KANE...WALKERSVILLE...
HILLVIEW...BERDAN...BELLTOWN...PATTERSON...ROCKBRIDGE...WRIGHTS AND
BARROW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS 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.

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

&&

LAT...LON 3952 9016 3922 9015 3899 9052 3898 9055
      3904 9064 3921 9072 3940 9071 3940 9061
      3947 9061 3948 9059 3953 9058
TIME...MOT...LOC 2038Z 235DEG 44KT 3927 9048

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

$$

BRITT

733 
WWUS53 KLSX 282110
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
410 PM CDT MON APR 28 2014

ILC013-061-083-282120-
/O.EXP.KLSX.SV.W.0073.000000T0000Z-140428T2115Z/
JERSEY IL-CALHOUN IL-GREENE IL-
410 PM CDT MON APR 28 2014

...THE SEVERE THUNDERSTORM WARNING FOR GREENE...CALHOUN AND
NORTHWESTERN JERSEY COUNTIES WILL EXPIRE AT 415 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 7 PM CDT.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.

LAT...LON 3952 9016 3922 9015 3899 9052 3898 9055
      3904 9064 3921 9072 3940 9071 3940 9061
      3947 9061 3948 9059 3953 9058
TIME...MOT...LOC 2110Z 235DEG 44KT 3949 9006

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Pike	8 days
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Pike	8 days
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Calhoun	35 days
Apr 28, 2:22 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	38 min
Apr 28, 2:42 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	48 min
Apr 28, 2:58 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	32 min
Apr 28, 3:19 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey, Madison	41 min
Apr 28, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	47 min
Apr 28, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	Jersey, Macoupin, Madison	49 min
Apr 28, 4:17 PM CDT	Tornado Warning	LSX	Bond, Macoupin, Madison, Montgomery	28 min
Apr 28, 4:29 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	31 min
Apr 28, 4:45 PM CDT	Tornado Warning	LSX	Bond, Macoupin, Madison, Montgomery	30 min
Apr 28, 4:50 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	25 min
Apr 28, 5:12 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Montgomery	48 min
Apr 28, 5:29 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	46 min
Apr 27, 7:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Monroe, Montgomery, Ralls	33 min
Apr 27, 10:41 PM CDT	Tornado Warning	LSX	Boone, Callaway	34 min
Apr 28, 12:37 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	38 min
Apr 28, 1:13 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	47 min
Apr 28, 1:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Warren	49 min
Apr 28, 2:27 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	48 min
Apr 28, 2:43 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	47 min
Apr 28, 3:06 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	39 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2014 Severe Thunderstorm Warnings in Missouri, 2014 Every severe thunderstorm warning in 2014

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.