Alert archive / Illinois / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 233, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 28, 2011, 1:49 PM CDT for 4 counties in Illinois. It was in force for 41 min. 16 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 28, 2011, 1:49 PM CDT (18:49 UTC)
- Expired
- May 28, 2011, 2:30 PM CDT
- In force
- 41 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Greene County, IL, Jersey County, IL, Macoupin County, IL, Montgomery County, IL
The radar
The St Louis radar (KLSX), 93 km from the middle of the area, began a volume at 18:51 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 28, 1:55 PM CDT | HAIL 1.75 | Rockbridge, IL | |
| May 28, 1:56 PM CDT | HAIL 1.75 | 3 Wnw Kemper, IL | LOCATED AROUND 3 MILES SOUTH OF ROCKBRIDGE ALONG THE GREENE AND JERSEY COUNTY LINE |
| May 28, 1:59 PM CDT | HAIL 1 | Kemper, IL | |
| May 28, 2:00 PM CDT | HAIL 1.75 | Chesterfield, IL | |
| May 28, 2:04 PM CDT | HAIL 1.75 | Chesterfield, IL | |
| May 28, 2:05 PM CDT | HAIL 1 | 1 W Carlinville, IL | |
| May 28, 2:08 PM CDT | HAIL 1.25 | 6 S Carlinville, IL | |
| May 28, 2:08 PM CDT | HAIL 2 | 5 W Carlinville, IL | HAIL COVERING GROUND. |
| May 28, 2:15 PM CDT | HAIL 1 | 2 S Carlinville, IL | ON ROUTE 4. |
| May 28, 2:25 PM CDT | HAIL 4.5 | 3 N Litchfield, IL | |
| May 28, 2:28 PM CDT | HAIL 1 | 4 Ne Litchfield, IL | AT LOU YAEGER LAKE. |
| May 28, 2:29 PM CDT | HAIL 1.75 | Litchfield, IL | |
| May 28, 2:30 PM CDT | HAIL 1.5 | 4 N Litchfield, IL | |
| May 28, 2:31 PM CDT | HAIL 1.5 | 4 N Litchfield, IL | |
| May 28, 2:35 PM CDT | HAIL 2.75 | Butler, IL | NUMEROUS CAR WINDOWS DAMAGED. |
| May 28, 2:37 PM CDT | HAIL 2.5 | Hillsboro, IL |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 6.8 hours before the alert went out and 151 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
820
WUUS53 KLSX 281849
SVRLSX
ILC061-083-117-135-281930-
/O.NEW.KLSX.SV.W.0233.110528T1849Z-110528T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
149 PM CDT SAT MAY 28 2011
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN GREENE COUNTY IN SOUTHWEST ILLINOIS...
NORTHEASTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS...
SOUTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
* UNTIL 230 PM CDT
* AT 146 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED 5 MILES NORTHWEST OF KEMPER...OR 10 MILES NORTHEAST OF
JERSEYVILLE...AND MOVING EAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
CARLINVILLE...GILLESPIE...LITCHFIELD...HILLSBORO...KEMPER...
SHIPMAN...WILSONVILLE...BENLD...MOUNT OLIVE...TAYLOR SPRINGS...
FIDELITY...MEDORA...PIASA...CHESTERFIELD...PLAINVIEW...ROYAL
LAKES...PRUETT...DORCHESTER...HORNSBY AND WHITE CITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
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 3903 8957 3903 8959 3900 8959 3900 8972
3918 9034 3936 9030 3930 8932
TIME...MOT...LOC 1849Z 279DEG 45KT 3925 9020
WIND...HAIL 60MPH 1.50IN
$$
CARNEY2 follow-up statements
423
WWUS53 KLSX 281903
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
203 PM CDT SAT MAY 28 2011
ILC061-083-281913-
/O.CAN.KLSX.SV.W.0233.000000T0000Z-110528T1930Z/
JERSEY IL-GREENE IL-
203 PM CDT SAT MAY 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GREENE AND
NORTHEASTERN JERSEY COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.
LAT...LON 3903 8957 3903 8959 3900 8959 3900 8972
3912 9015 3935 9015 3930 8932
TIME...MOT...LOC 1903Z 275DEG 45KT 3925 8997
$$
ILC117-135-281930-
/O.CON.KLSX.SV.W.0233.000000T0000Z-110528T1930Z/
MACOUPIN IL-MONTGOMERY IL-
203 PM CDT SAT MAY 28 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
MONTGOMERY AND SOUTHERN MACOUPIN COUNTIES UNTIL 230 PM CDT...
AT 159 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES
EAST OF KEMPER...OR 8 MILES WEST OF CARLINVILLE...MOVING EAST AT 50
MPH.
IN ADDITION...AT 200 PM HAIL THE SIZE OF GOLF BALLS WAS REPORTED
NEAR CHESTERFIELD WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
CARLINVILLE...GILLESPIE...LITCHFIELD...HILLSBORO...WILSONVILLE...
BENLD...MOUNT OLIVE...TAYLOR SPRINGS...ROYAL LAKES...PRUETT...
DORCHESTER...WHITE CITY...HORNSBY...HONEY BEND...WALSHVILLE...
BUTLER AND IRVING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
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 3903 8957 3903 8959 3900 8959 3900 8972
3912 9015 3935 9015 3930 8932
TIME...MOT...LOC 1903Z 275DEG 45KT 3925 8997
WIND...HAIL 60MPH 1.75IN
$$
CARNEY366 WWUS53 KLSX 281916 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 216 PM CDT SAT MAY 28 2011 ILC117-135-281930- /O.CON.KLSX.SV.W.0233.000000T0000Z-110528T1930Z/ MACOUPIN IL-MONTGOMERY IL- 216 PM CDT SAT MAY 28 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN MONTGOMERY AND EAST CENTRAL MACOUPIN COUNTIES UNTIL 230 PM CDT... AT 212 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR CARLINVILLE...MOVING EAST AT 50 MPH. LOCATIONS IMPACTED INCLUDE... LITCHFIELD...HILLSBORO...TAYLOR SPRINGS...HORNSBY...HONEY BEND AND BUTLER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ST LOUIS. && LAT...LON 3909 8952 3915 8991 3934 8995 3930 8932 TIME...MOT...LOC 1916Z 275DEG 45KT 3923 8976 WIND...HAIL 60MPH 1.75IN $$ CARNEY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 12:40 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Pike | 50 min |
| May 28, 1:14 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 46 min |
| May 28, 2:28 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 47 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2011Every 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.