Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 388, NWS St. Louis, MO

June 25, 2011Jersey County, Macoupin County, Madison County, Illinois; Saint Charles County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 25, 2011, 8:13 PM CDT for Jersey County, Macoupin County, Madison County, Illinois; Saint Charles County, Missouri. It was in force for 47 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: Jun 25, 2011, 8:13 PM CDT (01:13 UTC)
Expired: Jun 25, 2011, 9:00 PM CDT
In force: 47 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Jersey County, IL, Macoupin County, IL, Madison County, IL, Saint Charles County, MO

The radar

The St Louis radar (KLSX), 48 km from the middle of the area, began a volume at 01:16 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
Jun 25, 8:17 PM CDT	HAIL 0.25	3 N Godfrey, IL

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
Jun 25, 7:36 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 193 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

400 
WUUS53 KLSX 260113
SVRLSX
ILC083-117-119-MOC183-260200-
/O.NEW.KLSX.SV.W.0388.110626T0113Z-110626T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
813 PM CDT SAT JUN 25 2011

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN JERSEY COUNTY IN SOUTHWEST ILLINOIS...
  SOUTHWESTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS...
  NORTHWESTERN MADISON COUNTY IN SOUTHWEST ILLINOIS...
  NORTHEASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 900 PM CDT

* AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED NEAR ELSAH...OR 8 MILES WEST OF GODFREY...
  AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GODFREY...ALTON...BETHALTO...BRIGHTON...SHIPMAN...DORSEY...
  PRAIRIETOWN...BUNKER HILL...DELHI...PIASA...MILES STATION...
  FOSTERBURG...PLAINVIEW...ROYAL LAKES AND PRUETT.

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.

&&

LAT...LON 3889 8992 3890 9041 3896 9046 3897 9045
      3897 9047 3906 9054 3921 8989
TIME...MOT...LOC 0114Z 271DEG 22KT 3899 9031
WIND...HAIL <50MPH 1.50IN

$$

GLASS

1 follow-up statement

460 
WWUS53 KLSX 260125
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
825 PM CDT SAT JUN 25 2011

ILC083-117-119-MOC183-260200-
/O.CON.KLSX.SV.W.0388.000000T0000Z-110626T0200Z/
JERSEY IL-MACOUPIN IL-MADISON IL-ST. CHARLES MO-
825 PM CDT SAT JUN 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
ST. CHARLES...NORTHWESTERN MADISON...SOUTHWESTERN MACOUPIN AND
SOUTHERN JERSEY COUNTIES UNTIL 900 PM CDT...

AT 821 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
OEN STORM WAS LOCATED NEAR GODFREY AND ANOTHER WAS LOCATED NEAR 
OTTERVILLE...AND BOTH WERE MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  ALTON...BETHALTO...SHIPMAN...DORSEY...BUNKER HILL...PRAIRIETOWN...
  FOSTERBURG...PLAINVIEW...ROYAL LAKES AND PRUETT.

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.

&&

LAT...LON 3889 8992 3890 9041 3896 9046 3897 9045
      3897 9047 3906 9054 3921 8989
TIME...MOT...LOC 0125Z 287DEG 29KT 3895 9016
WIND...HAIL <50MPH 1.50IN

$$

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 7:13 PM CDT	Severe Thunderstorm Warning	LSX	Brown	20 min
Jun 25, 7:36 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey, Macoupin, Madison	39 min
Jun 25, 7:52 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin	38 min
Jun 25, 8:12 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph	48 min
Jun 25, 8:33 PM CDT	Flash Flood Warning	LSX	Adams, Brown	6 hr
Jun 25, 8:41 PM CDT	Severe Thunderstorm Warning	LSX	Madison	49 min
Jun 25, 8:46 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	44 min
Jun 25, 8:53 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	52 min
Jun 25, 8:58 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	47 min
Jun 25, 9:36 PM CDT	Areal Flood Advisory	LSX	Bond, Fayette, Macoupin, Madison, Montgomery	6 hr
Jun 25, 9:42 PM CDT	Areal Flood Advisory	LSX	Clinton, Marion, Washington	6 hr
Jun 25, 10:01 PM CDT	River Flood Warning	LSX	Fayette	4 days
Jun 25, 10:11 PM CDT	River Flood Warning	LSX	Brown	7 days
Jun 25, 11:11 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	49 min
Jun 25, 11:45 PM CDT	Areal Flood Advisory	LSX	Monroe, Randolph, Saint Clair	6 hr
Jun 26, 12:21 AM CDT	Flash Flood Warning	LSX	Bond, Calhoun, Clinton, Fayette, Jersey, Madison and 5 more	6 hr
Jun 26, 2:11 AM CDT	Flash Flood Warning	LSX	Monroe, Randolph	4 hr
Jun 26, 2:22 AM CDT	Areal Flood Warning	LSX	Brown	4 hr
Jun 26, 2:33 AM CDT	Severe Thunderstorm Warning	LSX	Randolph	42 min
Jun 26, 2:43 PM CDT	Flash Flood Watch	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	31 hr
Jun 26, 3:11 PM CDT	River Flood Warning	LSX	Pike	6 days
Jun 25, 7:26 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Jefferson, Washington	49 min
Jun 25, 7:45 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	45 min
Jun 25, 8:03 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Francois, Washington	42 min
Jun 25, 8:09 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	51 min
Jun 25, 8:42 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	48 min
Jun 25, 8:52 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Washington	38 min
Jun 25, 9:27 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	23 min
Jun 25, 10:01 PM CDT	Areal Flood Advisory	LSX	Franklin, Jefferson, Sainte Genevieve, Saint Francois, Washington	6 hr
Jun 25, 10:47 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	43 min
Jun 25, 11:00 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois, Washington	45 min
Jun 25, 11:08 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Washington	22 min
Jun 25, 11:35 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	40 min
Jun 25, 11:42 PM CDT	Areal Flood Advisory	LSX	Saint Charles, Saint Louis, City of Saint Louis	6 hr
Jun 26, 12:06 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	39 min
Jun 26, 12:42 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	33 min
Jun 26, 12:43 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
Jun 26, 1:43 AM CDT	River Flood Warning	LSX	Saint Charles	13 hr
Jun 26, 6:29 AM CDT	Areal Flood Warning	LSX	Lincoln, Saint Charles, Saint Louis, City of Saint Louis	12 hr
Jun 26, 2:25 PM CDT	River Flood Warning	LSX	Lincoln	7 days
Jun 26, 2:25 PM CDT	River Flood Warning	LSX	Lewis	4 days
Jun 26, 4:12 PM CDT	Flash Flood Warning	LSX	Jefferson, Saint Francois	6 hr
Jun 26, 4:15 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	30 min
Jun 26, 4:16 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Francois, Washington	29 min
Jun 26, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Francois, Washington	38 min
Jun 26, 4:54 PM CDT	Flash Flood Warning	LSX	Washington	6 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2011 Severe Thunderstorm Warnings in Missouri, 2011 Every severe thunderstorm warning in 2011

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.